XRAY M18 4WD shaft drive 1/18 micro car

[Piggy89373]

To understand how the voltage delivered to the coils of an armature, draw out a sawtooth wave form. Keep it at a constant frequency. Next, remember that at every 60 degrees of rotation the armature makes, the voltage polarity switches. The result across the coils of the armature look like a digital wave form. As the frequency increases, the revolutions increase, but not at linear proportions (because of drag, friction, etc.) So, on your art project, cut the voltage at every 60 degrees and you have something resembling pulse width modulation.

And that ends today's lesson. :D :D

[ducati777]

Hmm maybe my terminology is off, you seem like a pretty knowledgable guy.

Here's what I'm thinkin, PWM = changing the width of the pulse. The ESC works as a switch, and opens and closes the circuit quickly. It doesn't not create an AC current, just an on and off DC current. Much like the dimmer, it opens and closes the cicuit quickly.

As far as frequency I'm thinkin of a graph of the voltage... hmm lemme cook something up here.

EDIT::
Okay here's a graph of 2 waves with equal amplitude and different freqencies. If this curve was used to power a motor, they ought to generate equal power, as the area under the 2 lines is the same. The higher freq may peak more often, but on the other hand it dips more often.
http://www.freepixhosting.com/uploadedfiles/waves.GIF

Now here's how I understand an ESC works, could be wrong though... It switches on and off for different periods. Just simply DC, its either on or off, in this case on is a value of 1 and off is zero. In this graph the blue series is on 70 percent of the time, and the red series is on 20 percent of the time, indicated 20 and 70 percent power to the motor respectively. Full power would be a solid block, open circuit.
http://www.freepixhosting.com/uploadedfiles/wave2.GIF

EDIT #2:
I really should have done this all the first time! But the second graph is how I see the ESC working, and why I added the capacitor. The cap should fuel those instant on loads better than the battery.

[Piggy89373]

Ducatti, here's your two flaws....the DC voltage is not instantaneous because of the inductors and capacitors involved. The rise and fall (charge and discharge) is not instantaneous, it requires 5 tau. Therefore, you get a sawtoothed wave form that may even been somewhat sinusoidal because the time to charge and discharge may not be linear.

Secondly, you have to consider the frequency. If the frequency of this sawtooth wave increases up to 30 Mhz, how many times will the votage be at a maximum. With this in mind, the armature will see almost near constant DC voltage bringing the motor to max RPM and torque for a given voltage and amperage.

It's not pulse width modulation. It's not dealing with computer switching and boolean functions. DC voltage to the motor from your ESC is not a digital scheme to turn a switch on or off for computer processing. It's easier to perform this with inductors to produce DC current in modified wave forms at adjustable frequencies.

If you don't believe me, ask Jeeves. Look up electronic speed controls. If you can read basic electronic shematics, you'll see that many of the electronic components in your ESC's are inductors with a few caps thrown in there.

You're a smart guy, I'll give you that, but you need to rethink your graphs just a bit. If you don't believe me that you'll get more juice with a higher frequency, touch single phase 110 and then touch 3 phase 110 and tell me which one will put you on your butt. For a better reference, we in the states use 115 V AC 60 Hz power for the homes. Europe uses 220V AC 50 Hz. If you come across a bare wire, which will do more damage to you? Believe it or not, the 220 is slightly safer to touch. I've touched them both and not intentionally. Now, if you increase the frequency a tad on the 220 to 60 Hz, I'll bet dollars to donuts that if you touch that you'll be on your butt.

My previous reference dealt with AC intentionally, because AC current works on a wave form. The voltage from the ESC to the motor is also a wave form, pretty similar principle.

[Piggy89373]

Your capacitor, if you've lucked out correctly, should provide a slightly smoother operation because it'll keep the voltage at full throttle near continuous. It could fill in some of the drops in voltage from the ESC's sawtoothed wave form.

[ducati777]

Hmmm good post man. I definately have some reading to do.

[tcr]

The M18 is awsome and look reliable. But does anyone know the HPI Micro RS4 is actually faster, economic(longer duration of fun) and less fictional(Smoother). Check it out!

[Piggy89373]

Well, going by the track comparisons of folks on here as well as my local track, all the micro RS4's were blown away. At my local track, you won't find any RS4's even racing, they've all moved to the M18. The stock M18 setup was smoking all the RS4's and the mod class is absolutely dominated by the M18. That to me says it all.

[ducati777]

Yea I gotta agree on this one, the M18 is a superior design next to the rs4. I've owned both, and I'm much happier with the M18. My rs4 after it had some high mileage put on it, got really difficult to control. I had a 370 motor in it, and it was impossible to accelerate hard with it.

The M18 however, can take the power... sorta...
Edit:
Note the tires, I blew 3 tires, 2 diffs on this run.
http://www.freepixhosting.com/uploadedfiles/shoehorn.jpg

[losi racer13]

can you run them on the asphalt street becuz im thinking about getting one...i wanted to trade my hopped up savage 25 for a m18 rtr with goodies...i like onroad better

[Piggy89373]

You can run them on asphalt, concrete, carpet, etc. On asphalt, expect the usual amount of rock to ding up the bottom of the chassis. There's no reason why you can't run them on asphalt.

[losi racer13]

anybody want to sell theres?. how fast can they go with a brushed motor?

[rc addict]

my m18 is equipped with a trinity monster termination motor, and a novak spy esc, when i plug in the battery and turn on the esc, and give it throttle, the engine wont even budge unless i push the wheels which jumpstarts the motor, and then it works.... why is this happening? there is perfect mesh and the drivetrain spins freely, and the car rolls fine...

-i noted that the trinity motor says "use of aftermarket speedo is required" , but i thought the spy was aftermarket... is this the problem?

PLEASE HELP ME BEFORE I GO KICK MY XRAY

[minijosh]

I think you got sticky brushes. When was the last time you took them out and looked the them? That's what I'd check. Nothing too big to fix.

[rcmania67]

where I can get xray pinion? What is fastest brush motor I can put on this car>?

[rc addict]

how do i take out my brushes haha, its a new motor just broke it in

[minijosh]

That doesn't matter if it's new or not. Is it a bone stock motor? AKA silver can or does it have brushes? What motor is it? I got a team orion mod motor in mine.

[Kden46]

You can get either a Beast motor from One18th.com, a Krystal 3 motor from United RC.com, or the RKpro370v2 on ebay!

RCRaceday.com has the pinions you can also check ebay!

[rc addict]

my motors a trinity monster termination, and yea its got copper brushes i think

[rc addict]

do u think u might kno what the problem is?

[minijosh]

I'd swap out brushes, that's my fix for your problem.

[rc addict]

you were right, the brushes were not exactly in contact, so i pushed em in a little further, and got a 6 gp1100 pack for it ! :)

[rc addict]

i have a problem with the gp1100 6 cell i bought from reedy; if i charged it too much to the point were it got hot, will that limit its charge capacity, or make it lose charge faster? if i did damage it, can i correct that problem or should i buy another battery...
please help i just bought the battery 2 days ago and it only reads 76% full on the charger
without being plugged in, just after i peak charged it :(

[minijosh]

What charger you using? What rate are you charging it at? Is it made for nimh's?

[rc addict]

its a vision peak 2 charger, it can peak charge nimh receiver packs and nicd packs and virtually any nimh battery pack, im not sure its meant for micro packs, but what charger is?? (i charged it at 2 amps)

[rc addict]

do you think i damaged the battery? , i recall the battery was hot enough to make the doublesided tape it was mounted to, all sticky

[ryanD]

rc addict,
i have the same exact problem with my tinity monster termination motor. i had to send one back then they sent me a new one. when i was breaking it in it started to do the same thing as the other motor.what did you use to push them in with?

[rc addict]

rc addict,
i have the same exact problem with my tinity monster termination motor. i had to send one back then they sent me a new one. when i was breaking it in it started to do the same thing as the other motor.what did you use to push them in with?

i used a pair of needle tipped tweezers and gently edged them forward until they wouldnt go any further

[rc addict]

it seems as if one problem follows the next everytime, i was running my m18, with a gp1100 setup (6cell), trinity monster termination, and novak spy. I had been runing the car for a good 10 minutes, and i brought it closer to me and started doing donuts. When i did about my 3rd donut, i gave it full throttle and when i let go of the throttle, it kept going out of control full speed, so i had to grab it and shut it off. I touched the engine and realized it was hot enough to melt my finger, and the spy was hot as well. i figured the spy had shut off do to thermal shutdown, and when the motor cooled and i turned it back on, and i gave it forward throttle the engine didnt budge. when i gave it 1/8th in revers, it went fullspeed in reverse. I checked everything, changed the brushes, took it to the hobby shop, and i cant find out whats wrong with it, no forward throttle... my uncle suggested the novak spy was fried, is this a posssibility? please let me know asap because there is only one spy left in stock at my lhs...

[rc addict]

if i ever get this fixed im buying an aluminum cooling fin

[ryanD]

im have trouble with mine too. first i pushed in the brushes they did not move. so i turned it on and i had to do the regular push it to go and it was going backwards, i did not switch the throttle reverse on the radio. then buy its self it went backwards at full thorttle, good thing i had it on its stand. so i leave it alone and come back 10 mins later. it worked finebesides the fact i had to push it to get it to go, it went in the right direction and everything. then a few mins later i try it out agian. it did the same thing it did the first time, went in reverse. i did not change anything on it. it also took off in reverse at full thorttle agian but this time i had it on the table and it hit my tool box. does anyone know what is wrong with it. i have a novak micro gt esc, and a trinity monster termination motor,brand new.please help

[rc addict]

ryan it might be our motors lol, i havent seen anyone else with motor problems like these except us ( i have a side question, does anyone know if they make metal spur gears for the m18?)

[ryanD]

rc addict, yeah this is weird. my car worked fine when i put my team orion baja motor from my mini-t into it.i think im just going to buy a new motor, i got my m18 in april and have not got it to work right ,besides when i had my baja motor in it. thank god i race nitro and not electric!

[rc addict]

haha i came from the other way around, things seemed too tough for me in nitro, racin a kyosho fw-05rr and having to keep up with fuel..air filters...carburators, and then i got this little thing which when i run it, can almost keep up with my nitro cars!! i was impressed and now im into nothing but electric

[rc addict]

my question is if i fried my esc or my motor, cause it still works in reverse, so i wouldnt think its broken...

[ryanD]

it sounds broken to me but im no electric expert , i like nitro, but the best thing to do is check the troublesooting guide in the book your esc came with and,or call the novak tech support.

[rc addict]

true good idea, if its not the esc what motor should i replace the monster termination motor with, cause i havent seen anything faster than that little thing

ive heard the phantom mini mod, and ae mini max modified are pretty good, can you recommend anything that will be as fast or faster than the trinity monster termination for around the same price

[ryanD]

I might try the reedy mini motor. but trinity just came out with a motor faster then the monster termination, its a 17 turn but i dont think you want to deal with trinity motors anymore.i think i might look in to the phantom motor to. The orion baja is a good motor the only bad thing is that it does not come with wires, its ok if you hardwire your motor though.

[rc addict]

where can i find info on the new trinity motor??? i took my car to the hobby shop tofday and found my esc was indeed fried so my motor is good, but i want that new trinity one

[minijosh]

I got a one18th.com beast raptor motor. This puppy is so strong. My friend had my car and was fixing some small parts and he hooked up everything and he hit the gas and when he did, he ballooned off the tires way before he the trigger hit the back. Lets just say he was impressed. I'm going to hook up my M18 with mine. It's in my MRS4 right now but a change is gonna do me good.

[rc addict]

i considering getting the beast, but i just didnt know how good it was, is it faster than virtually all brushed modifieds?

[ryanD]

rc addict they have info on the new trinity 17 turn in the newstuff fourm, here is the link http://forums.radiocontrolzone.com/showthread.php?t=198791
i might try this one! :D

[rc addict]

Wow That Is Sick

[rc addict]

what about the new scorpion brushless system coming out on 1/18th.com is it gonna be comparible to the mamba?

[ryanD]

i dont know weather i should buy one or not because i had trouble with my last two trinity motors, i might try one of those beast motors. you might be able to find more information on mini motors at www.one18th.com

[rc addict]

yea ive seen their stat charts which is what made me get the trinity one, so i might buy the lrp micro reverse to handle the new trinity motor

[rc addict]

do you think micro cars can hit 35-40 without brushless cause mine looks like its goin that fast and its runnin 6 gp1100s zapped by reedy, and the trinity

[rc addict]

oh ya heres my set up

[rc addict]

every time i floor it, the drive train screams for mercy, and i hear it skip and click...

[rc addict]

^^^^

[rc addict]

my new digital camera is on its way shipping lol, mean time, cell phone works

[rc addict]

i have never seen anyone else use this, but i got a mini airtronics 75mhz fm its pretty cool, and it works which is the best part

[rc addict]

check the previous page i made some recent posts as well :p

[rc addict]

ya and i kno this is isnt a good thing, but i have so much extra wire length, that i have to wrap it around the body posts causes ive been too lazy to solder the wires short

[rc addict]

http://www.worldisround.com/home/rcaddict/index.html

better pics of the car camera FINALLY came

[rc addict]

does anyone know anything you can mod on the xray while its stock...without having to buy anything??

[ducati777]

does anyone know anything you can mod on the xray while its stock...without having to buy anything??

You can do a big block for cheap... Get a graupner 300, prices range from 6-15 bucks depending on how hard you look. The stock motor mount can be used with a bit of dremel work. The motor will only be secured by 1 bolt but it works fine.

[PCC]

With a bit of creative Dremel work you can get a 300-sized motor in there and have both motor screws to hold it in.

[rc addict]

without buying anything??? nothing involving the motor i already have a monster termination

[minijosh]

Where can I find a after market servo saver and servo mounts? I need some for my Xray that I got in a trade and that's all it's missing.

[rc addict]

do rc18t diffs fit in the m18?

[rc addict]

2 questions,

1.i ordered one rc18t diff for my m18 and i was wondering whether i should install it up front or in the back.

2. im converting to brushless very soon and i want to bash and race, and i want it to be VERY fast so is the 8000kv raceable?? if not, will the 6800kv get me in the 50's and still be raceable?

[ducati777]

2 questions,

1.i ordered one rc18t diff for my m18 and i was wondering whether i should install it up front or in the back.

2. im converting to brushless very soon and i want to bash and race, and i want it to be VERY fast so is the 8000kv raceable?? if not, will the 6800kv get me in the 50's and still be raceable?


I thought you weren't buying anything :D

I dunno about racable, thats a pretty vague term. I used my 5400 on 3 lipo cells and it was pretty out of hand. Couldn't ever really do full throttle, stripped both diffs, and blew out the tires all in 1 pack. It was fun though.

Yea the RC18T diffs fit and work fine. You'll need to shim the heck outta them as the diff housing is a little different. When racing you typically want the car to understeer, so maybe try it in the front with the rear running loose.

Pretty much any servo saver will work. I don't use one on the M18 and have never stripped the servo. The 18T is a different story and definately needs one. Check LHS for parts, or rock up towerhobbies.com

http://i15.photobucket.com/albums/a353/ducati777/shoehorn.jpg
http://i15.photobucket.com/albums/a353/ducati777/100_1175.jpg

[rc addict]

haha yep i went and bought one lol...so your saying i need to put shims on it for it to fit? is it too small...and will i need any other mods?? also thats a huge capacitator you got there ...nice tires too..i think its time for a change...
as far as the brushless goes..im gonna stick to nimh POSSIBLY bump it up one cell to 7 and see what happens...maybe invest in some xray optional diffs and put some shims over the outdrives.. i think i will put the ball up front seeing as the current diff is either too loose or too tight all the time... what do you mean by needing a servo saver...ive never used one and what are they for?? will i really need one or is it optional

[rc addict]

will the ball diff generate a greater amount of understeer in the rear? what kind of driving characteristics can i expect if i put it in the rear...also the front??

[rc addict]

p.s. yea i realized minijosh was asking about the servo saver not me...sorry ^^^^

[PCC]

without buying anything??? nothing involving the motor i already have a monster termination
Without buying anything extra.

[rc addict]

today i bought a motek panther 150mm chassis...i really hope i will be happy with it...can anyone describe the changed driving characteristics after installing it??

[ryanD]

rc addict,
the panther chassis really stifens the car up with the upper deck. every thing fits nice the only thing that took a little time was the servo.BTW what color did you get the motor mount, battery strap mounts, and servo holder in? i got blue. it is so nice i dont take it on the street because i dont want to scrach the bottom of the chassis!:D

ryan

[rc addict]

sounds awesome dude blue looks stunning and i wouldve chosen it, but motek was out of stock of the orange and blue,so i went with red, so now im your nemesis haha... ill let you know what it looks like when i get it, i havent even seen pictures of it in red...also do you know anything about shimming the rc18t diffs to fit??

[rc addict]

p.s. (yea i only bash for now and i think im not even gonna take it on the streets because it looks so nice...so i better start racin at my hobby shop and convert to brushless if i dont wanna get my tail whooped)

[pchan]

Check out the article that I did at one18th.com that shows you how to properly install and shim RC18T diff

http://www.one18th.com/ShowArticle122.htm

[rc addict]

WOW thats just what i needed...thank you so much

[rc addict]

also if i take my motek on the streets and the bottom does get scuffed up...how about the top part of it...will it be fine and not get scuffed?? thats really all i care about...so itll still look somewhat nice

[rc addict]

ahh i just ordered some diff lube, and 5 of those shim packs...this should go well...

[rc addict]

i still cant decide if its best to put the ball diff up front or in the rear...i dont know how it will affect the car either way

[ryanD]

it will scrach the bottom of you chassis and the screws on the bottom, i recomed if you take it on the street to put masking tape on the bottom :D thats what i did.

[rc addict]

haha good idea..i might put the clear lamination stuff or maybe duct tape

[rc addict]

....something durable like that

[rc addict]

i might wanna put some electric tape on my tires and learn how to drift as well :->

[ryanD]

yeah i drift on the hard wood floor in my living room, dont even need electric tape, i finally found a motor to replace my trinity that i was having trouble with(rcaddict rember a few pages back we had the same prblems) BTW did you ever get yours to work? im getting the new LRP fusion 18 turn. it is coming out early august at tower. cant wait!


ryan

[rc addict]

yea i got my motor to work, apparently i overheated my esc, i think i need some deans micro connectors! i ordered them a day ago. and yes that motor you are planning to get is SICK, when it comes out, if im not ready to buy a mamba, im buying that lrp :-)
(would the trinity 17 turn be any faster?)

also ive decided im gonna put that lamination stuff (the clear vinyl or plastic adhesive) under my chassis so i can still see the carbon fibre lol

[rc addict]

your problem might be that the brushes arent touching close enough to the com...try and push the brushes relatively forceful with a small narrow stick or something, when i first had problems, it was that...then i later fried my esc :p

i know for a fact that when you get the motor working, its real nice, did you get yours to work?

[rc addict]

I NEED A RESPONSE IMMEDIATELY I placed an order for deans micro plugs...but ive seen some people use ultra plugs... which are better? do they both work for mamba? please help right now i have a trinity stuck in my car but im gonna upgrade to brushless soon

[strechm]

Use the Deans Ultra Plugs if you are going to use a brushless set up. The micro plugs create too much resistance (heat).

[ducati777]

Well the stock M18 diff is pretty loose, and a standard ball diff has a bit of friction in it. When looking at my M18 and my RC18T, the M18's diffs are looser. Typically if you want to understeer, put the stiffer diff in the front. To oversteer, or drift, put the stiff diff in the rear.

I recommend the 18T diff in the front. Especially if you go high power like brushless or something.

And whats with you guys scared to scuff the bottom? Did you buy it to look at or drive?

[rc addict]

will the micro plugs be less resistant than the stock plugs for a 6 cell set up and trinity monster termination...or can i use ultra with those?

[rc addict]

(thanks im gonna put my ball diff in the front..as far as us afraid to scuff the bottom...its a car guy thing... :D we dont like to see our rides get too beat up thats all... and flat out, that carbon fibre and aluminum looks beautiful... :rolleyes:

[strechm]

will the micro plugs be less resistant than the stock plugs for a 6 cell set up and trinity monster termination...or can i use ultra with those?
Yes but nowhere near as good as the ultra plugs.

[rc addict]

k thanks alot i changed my order

[rc addict]

how is the quality of the motek hardware? do they strip or thread easily?

[ryanD]

ducatti,
when your 15 and its hard to get money you dont want to make you 70.00 investment to look lke sh*t.

[ryanD]

rc addict,
so far i have had no trouble with the hardware. its really nice. the trinity 17 might be faster but im done with trinity motors. i tryed pushing them in and nothing. i will have to send it back and get a new one for a back up(if it works).


ryan

[rc addict]

i guess so, i might go for the new trinity, perhaps im gonna build my own battery pack out of matched intellect 1200's rc mart sells them for 25 bucks!

hey im 15 also lol turning 16 the 24th cant wait to see if i can get an emaxx :D
and i agree its hard savin up money when you can only get minimum wage ;)

[ducati777]

Alright, I guess I see where you guys are coming from. I just hate to be afraid to use anything I own. Yea my cars look like hell, but I've got a ton of miles under them too.

[ryanD]

rcaddict,
rcmart is not in america(i dont think) so shipping is going to cost more money. me and my dad just ordered from rc-mushroom in japan and had a hard time getting every thing sorted out with shipping. if you want a already built battery pack with the intellect 1200 , SMC makes a built 6 cell one at tower and its only 20.99!!!. heres the link http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXKUZ6&P=7 . i think i might get that when i order the LRP motor. i like to build my own but for 20.99 its a deal.


ryan

[rc addict]

sounds good, ducati i still see your reasoning, it is good to just use things sometimes and not worry about damaging it, but for now im gonna try and protect it lol.

ryan: thats awesome that your dad gets involved with you, ive been tryin to get my dad to get into rc with me but hes too busy all the time...i might look into that intellect pack, but i think this time i wanna build my own...

i think i might have fried my esc again today...if its true im switching to the lrp micro

reverse because im fed up novak

[ryanD]

yeah me and my dad race nitro, hes my pit man and machanic. what novak esc are you using, i have the novak GT. if you have the spy i know why its fried because it is ment for motors that are not modified like the trinity you have. i fried my lrp micro on my mini-t with the same motor. now lrp just came out with the micro2 esc for mod motor. same with novak, the spy cant handle the mod motors, but the new GT can.


ryan

[rc addict]

wait novak has a new esc thats not the gt?

[rc addict]

you see, i want something that can have reverse, i dont like the fact that the gt doesnt have reverse...i know that the lrp micro can handle any motor and its reverse..by the lrp micro 2, do you mean the a.i. one?

[rc addict]

my spy has been holding up well with the trinity, i found today it was the brushes, so i changed them

[ryanD]

no, i mean the new LRP quantum Competition 2 esc. heres the link to it in the hot news and New stuff fourm. http://forums.radiocontrolzone.com/showthread.php?t=193461 . it came out with the the new micro batterys and the new micro fusion motor (the one im getting) from lrp.

[rc addict]

nice, hey by any chance can you post a picture of your car ryan?

[rc addict]

also im plannin on putting deans ultra plugs on my premade gp1100 pack from reedy, and hooking it up to my trinity monster termination, will that work?

[ryanD]

yup that will work on your pack. i dont have pics right now, but my dads friend is letting us borrow his digital camera tomarrow, well today since its past 12, because im selling this one mini-t i won in a raffle and the guy wants pics. so i will take some pics of my x ray and my mugen! :D


ryan

[rc addict]

thats awesome you wona mini t. but send the pics hurry! lol

[ducati777]

also im plannin on putting deans ultra plugs on my premade gp1100 pack from reedy, and hooking it up to my trinity monster termination, will that work?

That should be a quick setup.

[rc addict]

thank you for the insight, now im determined to go with those lower resistance plugs :D

[rc addict]

i just really wanna sell my spy which isnt made for modifieds apparently, and is not supposed to handle my trinity, so im thinking i wanna get the micro 2 if it indeed has reverse

im looking for something with no motor limit or at least handles modified 280 and 300s easily, and i want something with reverse unlike the micro gt

[rc addict]

ryan you got those pics yet? ;)

[ryanD]

im trying to get them up it will not work

[ryanD]

ill try agian

http://i16.photobucket.com/albums/b27/ryandalnogare/rccars009.jpg

[ryanD]

and another

http://i16.photobucket.com/albums/b27/ryandalnogare/rccars008.jpg


more to come just have to upload them!

[ryanD]

and another with the body

http://i16.photobucket.com/albums/b27/ryandalnogare/rccars015.jpg

[ryanD]

another with the body. tell me if you want more pics of the chassis.

http://i16.photobucket.com/albums/b27/ryandalnogare/rccars018.jpg

[ryanD]

anther good one


http://i16.photobucket.com/albums/b27/ryandalnogare/rccars019.jpg

[rc addict]

omfg if that is not the most killer body ive ever seen shoot me now...and what a clean set up, i like it, i intend my set up to be just like that when i get my motek...
im just wondering, that thing looks like it can boogey, how fast does it go?
do you only run it on the track? or on the streets too? how do you like the baja?

[rc addict]

also, i see your rims cracked, just like mine did lol (yes id like more pics please)

[ryanD]

that thing in the back round is a hoped up mini-t

[rc addict]

the one you won in the raffle?

[rc addict]

how fast does it go? do you take it on the streets? that looks like it goes around 50, i think mine goes like 35 or 40

[ryanD]

no its not the one i won in the raffle. im seling the one i won since i had that one. yeah its for the street i have foam tires on it. its got the lrp micro esc. but not the one on that link. i will take pictures of it if you want.thanks for the nice comments. it goes about 30 maybe maybe lower.

[ryanD]

are you talking about the mini-t or the m18? heres another pic of the body. you cant see the orange fade in the otheres but you can in this one. more pics to come!

http://i16.photobucket.com/albums/b27/ryandalnogare/rccars020.jpg

[rc addict]

i was talki n bout m18

[rc addict]

ur m18 only goes 30??? mine looks like its goin like 40

[ryanD]

oh i tought you were talking about my mini-t, i dont know how fast it goes. it looks like they go real fast but that is because its so small. i dont like the baja, it get real hot like 200 and i have changed the gear mesh and lowered the amount of teeth on the pinion and it still runs too hot. but it runs fine in my mini-t.

[rc addict]

thats cuz the rpms are way higher with those little m18 tires lol, but ive heard good things about it, yea my trinity heats to 200 in a couple minutes haha

[rc addict]

but i do think they go around 40 (yo whats ur sn?) <<<pm me i guess

[ryanD]

my AOL instant messenger screen name?

[rc addict]

yea dude

[ryanD]

heres my mtx-3 :D


http://i16.photobucket.com/albums/b27/ryandalnogare/rccars004.jpg

[pchan]

my AOL instant messenger screen name?

Ryan, your M18 looks very clean and like mine. :cool:

[rc addict]

YOUR THE ONE WITH THE M18 THAT LOOKS LIKE THE PRO4 on 1/18th.com!!!!
I LOVE YOUR SET UP

[rc addict]

how do you like those intellects??? are they hardwired directly to the esc? is that alot better than deans?

[rc addict]

also guys...anyone who can spare a "novak micro gt" or "lrp micro", i would like to either buy it, or trade in a brand new novak spy and pay the difference... im looking for something that can handle modified motors...

[rc addict]

does anyone know if there exists a metal spur gear for the m18?? i really think it would be a nice addition since there are a bunch of alloy pinions out there

[rc addict]

where is everyone...

[ducati777]

where is everyone...

I'll jump in just to end your streak here. I don't think you're over using the system, but I saw a guy get banned for too many posts in a row. Thus I'm jumpin in.

Why do you want a metal spur??? That seems like a bad idea. First off is the noise, second the additional wear on the pinion, third they're more vunerable to rocks, forth you risk radio interference....

I'm happy with a plastic spur.

[rc addict]

thanks for saving me, i mean it, and im not really this persistant in actuality...but i realized that forums are the place to get out all your questions...and your anxiety haha, but ill reduce my question asking for now...the reason i wanted a metal spur was because i am switching to brushless soon and i will have a metal pinion by then. and i dont want my spur to die on me and have to be repeatedly replaced due to the stress from the motor

[Kden46]

Alot of guys have been running brushless setups in their M18's for awhile now. And I have'nt heard about anyone stripping the spur? But most guys I think like to use the Xray plastic pinions with the M18.

One thing I could see happening with running metal pinion and spur is the chance of something else in the driveline breaking?

But as far as I know there is not any metal spurs made for the M18. This might change when and if the M18T is released?

Here's some pics of my stock class m18
It's mostly stock with
18T ball diffs f/r
URC CarbonFiber Upper deck
URC 180 vert motor mount
Sony lithium ion batts 2C 7.4v
pic1 (http://img195.imageshack.us/img195/2055/m1815er.jpg)
pic2 (http://img96.imageshack.us/my.php?image=m1822ge.jpg)
pic3 (http://img280.imageshack.us/my.php?image=m1830tr.jpg)

[rc addict]

when is that tekin scorpion coming out... is it supposed to be better than the mamba?

[Kden46]

There has'nt been much talk about a released date for the tekin scorpion, now called the Mini Rage.

Back in May they said it would be out by June! :confused: I thought I read somewhere that said end of August? But I would'nt hold my breathe ;)

One thing good about the Tekin system is the onboard programming, which is an advantage over the Mamba.

Not sure about any other specs or performance since their has'nt been much info released!:mad:

[rc addict]

how fast will a mamba 8000kv on 3 cells of lithium polymer get your m18?

[tcr]

"I find the Tekin marketing is invisible" :cool:

[tcr]

...But check this out http://www.teamtekin.com/Videos.asp , you might fall in love with it!

[rc addict]

the video didnt work

[tcr]

No, it is working. Check see if your computer have the .asp plug-in.

[tcr]

There has'nt been much talk about a released date for the tekin scorpion, now called the Mini Rage.

Back in May they said it would be out by June! :confused: I thought I read somewhere that said end of August? But I would'nt hold my breathe ;)

One thing good about the Tekin system is the onboard programming, which is an advantage over the Mamba.

Not sure about any other specs or performance since their has'nt been much info released!:mad:

Well the Mamba esc has onboard programming too. In fact the Mini Rage and the Mamba are same with different packaging. ;)

[rc addict]

what kind of steering will i get from a loose rear diff and a stiff front diff

[PCC]

Understeer, understeer, understeer. The car will want to track straight when you want to turn.

[rc addict]

ahh good, my rear diff is loose enough to spin freely, and my front diff is just tight enough so the wheels dont spin freely and when you spin one, the other spins in the same direction

[Kden46]

Well the Mamba esc has onboard programming too. In fact the Mini Rage and the Mamba are same with different packaging. ;)

Yes but the Mini Rage is said to be easier to program. The Mini Rage also has drag brakes.

Mini Rage (http://www.yourmicro.com/forums/showthread.php?s=&threadid=15215&perpage=15&highlight=scorpion&pagenumber=5)

[rc addict]

how is there so much info about the mini rage yet its not out

[Kden46]

The guy who posted that info is the son of the new owner of Tekin. He is doing alot of the testing and has been nice enough to share info with us.

Although it's been quite awhile since they have posted any new info! Especially a release date!

Pre orders where taken months ago and it was supposedly going to be out in June. It's now August and still nothing!

[rc addict]

thats quite the delay

[rc addict]

anyone know anything about the atomic central one way?? comes with a blue unit that slides onto the included titanium shaft and inserted into the diff couplers...

[rc addict]

http://cgi.ebay.com/Atomic-Central-One-way-Set-With-Titanium-Shaft-XRay-M18_W0QQitemZ5994793868QQcategoryZ2565QQrdZ1QQcmdZ ViewItem

[rc addict]

so much support for this car...man

[Duster_360]

Try this link - I saw this just nosing around -

http://www.one18th.com/forums/showthread.php?t=25960&highlight=atomic

[traxxas_fan101]

hey all, im new to this thread but not to the m18
iv raced it for a year now and just got it ready to race this season
its got a custom made CF driveshaft
6 degree caster arms
2.5 degree toe links
mamba 8000 :)
42t spur
other than the mamba its just a basic-no frills m18 but it works for me!

http://i4.photobucket.com/albums/y107/bassplayerguy/blackbody.jpg
http://i4.photobucket.com/albums/y107/bassplayerguy/karatemonkey.jpg
http://i4.photobucket.com/albums/y107/bassplayerguy/sweet2.jpg

[microrcdude]

daang those foams werent sealed were they?

[traxxas_fan101]

nope :D
note to self-dont use foamies on a really abrasive road :o

[freemachinist]

Has anyone seen the nitro Xray m18. Its called NT18. check out the web site. www.teamxray.com

[minijosh]

Sure hope I can upgrade my M18 to nitro.

[rcmania67]

What is the best ESC you can use to run 11.1v lipo 1500c or 1800c to run on X-Ray M18> Thanks

[rcmania67]

I love my M18. It got Penguin p7500 Chassis, Wattage 370 motors, 7 cells GP1100, LRP Quantum Pro Reverse ESC, and Futaba Radio. This thing can go at least 40mph. I’m waiting for mine GM Racing V4r ESC so; I can run 11.1 1800a Lipo.

I was wondering, is the new Trinity 17T micro motor is faster than the Wattage 370?

[traxxas_fan101]

What is the best ESC you can use to run 11.1v lipo 1500c or 1800c to run on X-Ray M18> Thanks
you might want to upgrade to a bl if you are using lipo's
i think the lrp competition2 would work with it tho

[tcr]

Xray m18 is going nitro, it look very quick and smooth.

[Baja-Destroyer]

hey im thinkin about getting one of these since alot of the guys race these at my lhs i already got electronics figured out but whats the stuff u need to be competive besides the graphite stuff and good driving

[The_Mini_Me]

The Xray is very competitive out of the box. Whats you need to discover more is what is the type of class being run? A stock or mod based class with motors. This will influence how much you need to spend to get the car ready.

[Kden46]

Yeah it's a good idea to see what everyone else is running? Like motor, batts, tires?

A stock m18 is good right out of the box. If your racing on a smooth surface than a graphite chassis will we a great upgrade! As it will stiffen the car up alot!
If your racing on say a parking lot or semi rough you may want to try the stock setup first or maybe look at just adding an upper deck? The stock chassis is very flexible so it will soak up alot of bumps, and adding an upper deck will stiffen the chassis just enough to allow the suspension to work a little better without making the overall chassis to stiff.

I raced my m18 mostly in parking lots and the stock chassis combined with the penguin rc upper deck was my favorite setup.

rcmania the Trinity is supposed to be alot faster than the wattage 370 from what I have heard.

There are also the One18th.com Beast motor and the United RC Krystal motor that are based on the same can as the Trinity I think? The Krystal motor took 2nd place in the mod class at the Potbelly's micro race!

[tcr]

I like all your ideas. But unfortunately the 1/18th scale touring is fading away. My local club stop this class of racing about two years ago. Why there is no governor of body to support this class? Or maybe a world class? It will be awesome, isn't it?
Soon, Xray will come out an M18 Nitro http://www.teamxray.com/teamxray/news/newsdesc.php?news_id=694&kategoria=694&Xnet_Session=04aa3ee251300696cc5bf580b2622ded, Kyosho and A-Tech will join venture with their HIROSAKA NRX-18 http://www.kyosho.co.jp/web/race/race_event/event/2005_prshow/img/report05/IMG_3803.jpg. At lease I hope Kyosho will have a 1/18cups like the mini-z cups, so we will be able to met each other.
And actually the 1/18 class has proved faster and better than the 1/10th scale.

[The_Mini_Me]

It requires dedication like any class from all involved. Ours is still going, though we now try to alternate with trucks as many of the larger scale already race sedan. With carpet jumping trucks, we can offer a class that normally cant do on carpet. We may also involve pan cars like the BRP and Laje in the mix as well

[minijosh]

Well i'm modding my m18 into a Penguin 7500 54K M18. How sweet will that ride be. I race indoors on carpet so foams are legal, just no additives. Should I get the vertical motor mount?

[ioyasm]

the m18 is an excellent car have mine upgraded to graphite chassis front one way diff rear ball bearing diff aluminum drive shafts top 6 degree arms and a mamba motor it is stupid fast but with the mamba in it if you become hard driver it will melt the spur gear on the drive shaft other than that it is an excellent car i have mine for sale as i am running micro truck and summer 1/8 xray r8 buggy

[ryanD]

its nice to see this thread coming back to life alittle. anyways heres my new body for my m18....

http://i16.photobucket.com/albums/b27/ryandalnogare/rccars134.jpg

[minijosh]

Wow i love that paint job.

[FocusWRC]

This little car if one of my favorites . Its awesomely fast . It has a 370 motor ,AE xps micro esc ,it is the graphite special edition and Intellect 1100mah 6 cell matched pack's .

[ducati777]

Can anyone recommend a good 2s lipo pack?

[The_Mini_Me]

I like the Thunder Power 1320 pack as it has so much extra room to put stuff in the chassis. But that just me.

[outfitter540]

Where is the best place to buy online? I could not find RCCarGODS.

[The_Mini_Me]

There are a variety of shops online. Have you checked locally at your local hobby shop to see if they can order xray for you? If not, rc america itself offers shopping. Two other companies are team helotes (http://www.teamhelotes.com/~main/catalog/c19_p1.html) and stormer hobbies (http://www.stormerhobbies.com/).

[hyperstang]

Man...

I just found mine in a toolbox that I had hid away in the back of my closet. I put it away when our season ended........about a year ago...YIKES!!!!!

My servo horn is stripped off of the steering servo and reading all the threads...makes me want to bring her back to life. I even got a set of foams not even used..MAN!!!!!!

[The_Mini_Me]

You could upgrade to the Micro Servo Saver # 382500 (http://www.teamxray.com/teamxray/products/proddesc.php?prod_id=1270&kategoria=&catName=Micro%20Servo%20Saver) that xray offers hyperstang. One of the best you will find in micro.

[hyperstang]

Sounds like a plan...thanks mini me

[hyperstang]

My friend just got his back to life, this time with a 11.1V battery for the mamba. I think I may bring her back to life, but I was thinking of making her a 140mm chassis rather than the 150mm chassis...

[RoboRC]

Hey all!

I just found out that my local hobby store has a 4,000 sq. ft. carpet track. They have a 1/18 scale class, so I am considering picking up an M18 or an M18 pro. Can you folks give me some ideas as to what motor, spedo, servo, batt. I should pick up in both stock and mod?

Also, I have never raced touring before... only 1/10 off-road. Should I shell out the extra $79.00 and get the pro kit or just stick with the stock kit?

Thanks!

Robo

[The_Mini_Me]

Whats the rules at your track? That defines what you get the most.

Pro kit all the way.

[AreCee]

I just picked up a Pro with a Mamba Comp set in it. Racing on carpet only, good size track about 60x30. What gear combo would be good for road courses, 42/?.?

Had traction roll problems, switched to the 50sh tire and things settled down ater they started to run in. Anyone recommend CA on the sidewall of the 45sh?

Thanks.

[The_Mini_Me]

I just picked up a Pro with a Mamba Comp set in it. Racing on carpet only, good size track about 60x30. What gear combo would be good for road courses, 42/?.?

Had traction roll problems, switched to the 50sh tire and things settled down ater they started to run in. Anyone recommend CA on the sidewall of the 45sh?

Thanks.


Depends on which mamba your using, but a 16 probably is a safe bet. More than likely you can go much higher. See how the motor feels after a few minutes both speed and heat wise.

With the speed these can obtain, traction rolling can be a issue. Other than a finer throttle finger, yes, CAing the sidewall of the front tires is a good way to help increase your speed through a corner without traction rolling.

[AreCee]

Depends on which mamba your using, but a 16 probably is a safe bet. More than likely you can go much higher. See how the motor feels after a few minutes both speed and heat wise.

With the speed these can obtain, traction rolling can be a issue. Other than a finer throttle finger, yes, CAing the sidewall of the front tires is a good way to help increase your speed through a corner without traction rolling.
Thanks,

It's a 6800kv and I'm pretty sure the 16 will be fine. I have a 14 on it now and it just doesn't stretch out on the loooong straight. (The track is actually 80x40.) I bought the car off ebay so it only had the one pinion.

I can appreciate the throttle finger statement because that is what it preach too. :D The problem came up when I changed to new 45sh tires and it rolled way too easily. :eek: Then switching to the 50sh helped and even got better for the next qualifier. :) I may still dip a q-tip in some CA and apply a small bead around the sidewall. The other thing was that it was the first time out on the track for the car. The left side of the chassis was dragging on the carpet (you should have seen all the traction compound on the chassis) what would cause that?

I have another question, the person I bought it from put on the GPM shocks which are nice in that they came with three spring choices, however, they are not very smooth. It had the softest spring on all four corners which probably contributed to the traction rolls. Also they were in the outer holes which is supposed to be softer. My question is, wouldn't I be better off with the stock shocks because they are much smoother and consistent feeling than those GPM? I'm not impressed by GPM quality so far.

[AreCee]

I will also be racing on a 32x24 carpet track. Now there I know I'll need a tiny pinion gear, something like a 10 or 11 with that Mamba. What do you think? It's that or lots of throttle self-control.

The other choice would be to pull the ESC and motor out of my RC18T but that would mean that I can't race both on the same night.

[The_Mini_Me]

Why not see how the mamba runs with that 16 tooth on the smaller track before going lower. You could also use the mambas programming to have a different feel per track.

Never used the gpm shocks. Only the xray and atomic. Atomic does make some lowering springs that are stiffer and handy to have. I run lipo though so my setup is slightly different since I need lighter springs with the lipo and track.

Here is mine:
http://forum.teamxray.com/xform/index.php?act=view&ID=41&setup=m18_pro

As far as dragging check your droop screws and that your arms ride at equal height (thought gpm had adjustable collar for ride height). Also car is slightly left heavy with a 6 cell nimh. Its not too bad, but you do have the option of putting a tiny bit of weight on the right. Finally, make sure your chassis is flat slightly loosen the upper deck and put the bottom chassis on a flat surface. Then screw down the screws in a "kitty corner" method.

[AreCee]

Great hints. Thanks again. I'll check the side-to-side weight distribution too. There were no droop screws in the front. I replaced them.

Your set-up sheet says that your ride height is 3.25mm front and 1.75mm rear, is this correct? My height is just a hair over 5mm f&r.

Is the wheelbase a typo? 255mm?

When you measure the droop, you show 1.3 screw and 1.15 screw, is that the threads or in mm? Mine is at 1.5 on the Hudy droop gauge on all corners.

[The_Mini_Me]

I don't have the hudy droop gage (yet). I'm pseudo measuring how much of the droop screw is showing.

The online setup is still beta, so the wheelbase is malfunctioning.

Yes, that ride height is correct.Though going to raise rear to 2mm and drop front slightly. Btw , one of the reasons I can do this is because I am using lowering springs and/or cut the normal springs a coil or two off. I can then adjust my ride height separately from my droop.

[AreCee]

I don't have the hudy droop gage (yet). I'm pseudo measuring how much of the droop screw is showing.

The online setup is still beta, so the wheelbase is malfunctioning.

Yes, that ride height is correct.Though going to raise rear to 2mm and drop front slightly. Btw , one of the reasons I can do this is because I am using lowering springs and/or cut the normal springs a coil or two off. I can then adjust my ride height separately from my droop.
Oh OK. I always set the ride height separate from droop since they do two different functions. I decided it is easier to check the droop at the tie ros screw instead of the arm tip so now my droop reading is 0. I have the droop gauge from my 1/10 scale set-up station.

I was wondering about your low rider numbers. I can't go less than 5mm, it's a track rule that almost all the tracks here follow. So we set our ride height accordingly (three quarters tall).

I removed the pinion and now I know why it topped out early on an 80' straight, it is a 13T. Also the threads were stripped so it was glued on the shaft. Do you use metal pinions or stick with the composite ones?

I don't have the ability to save the set up sheet but can print it out. They must have fixed the bug with the wheelbase. What is neat is that it will calculate the final gear ratio but won't do roll out even when you enter the tire diameter.

Thanks again for your help. This little car is more fun than my TC3 and just as fast. (OK, I haven't upgraded to a TC4 or TC5 yet but my skills are still at the 3 level :cool: ).

I will be racing it on a 32x24 track tomorrow evening. It's a very tight fast track with lap times around 5 seconds.

[The_Mini_Me]

I have never heard of a 5mm rule. That could part explain your traction rolling. These cars need to be closer to the ground. Cant they make a exception for these scales? Its not like they weigh a huge amount or have screws sticking out to cut up the carpet.

I use composite, but with a brushed motor. Xray should be releasing metal pinions at some point.

You have to join the xray forums to be able to save sheets. Yea, I know the rollout it broken, the setup also is buggy in firefox. Still, its something we can all share and should improve over time.

[AreCee]

I dropped it down to 3 - 4 mm using the GPM black springs (are those the stiffest or are the gold ones?) on the stock shock. :cool: If the race director hassles me then I'll refer him to you, OK. :D

I'll use a metal 14T 48P if the 13 starts to slip.

[AreCee]

Well the 13T stayed on and the car was fun to drive on such a small track (32'x24'). I may go down to an 11 or 12T. The car handled very good and I can see it getting better quickly.

No dragging the chassis (even at 3mm) with the help of stiff springs and 50sh tires in front and 40 in the rear. Also the batteries stayed where they should which probably helped too.

[Interceptor]

Just thought I would share. Let me know what you think!
http://i235.photobucket.com/albums/ee295/interceptor911/painting011.jpg

http://i235.photobucket.com/albums/ee295/interceptor911/painting009.jpg

[The_Mini_Me]

Watcha got under the hood? :)

[Interceptor]

Exotek Chassis, Fireball motor, Novak Spy, Hitec servo. Little sucker just smoked some brushless RC18Rs today :-)

[T-Maxxahol]

anyone run the m18t ... tough as nails or dont bother??

[The_Mini_Me]

Its a great truck.

Here is a thread for it specifically:
http://forums.radiocontrolzone.com/showthread.php?t=187965&page=3

[aa240sx]

So, I understand the street price for this back in the day was 100 bucks, but now there's guy selling a pre-loved one with the following, 'extras'

Xray m18 Kit - in the original box - has been built and used bout 2 years old
LRP ESC
stock motor and aftermarket motor
HPI RS4 mini chassis
upgraded xray CF chassis
2 bodies, a nissan gtp body and ferrai modena unpainted
aluminum aftermarket wheels
tons of spare parts
couple of batteries

All of this for 100 bucks. kit's about 2 years old. he used protective tape on all his chassis and removed them so now they basically look new.

thoughts?

worth it?

I"ve never been into the mini scene before and thought this could be a good way in. Been mainly into nitro buggies, maxxes and rs4 3's.

[theskunk]

Put it this way -- if you didn't jump on that and its still available let me know and i'll buy it -- i'd LOVE one of those...

[MdRC]

Just picked a M18 up on ebay today, I hope it wasnt a bad deal for $156.

http://i304.photobucket.com/albums/nn180/mdformula350/XRay%20M18/2196_12.jpg

http://i304.photobucket.com/albums/nn180/mdformula350/XRay%20M18/2221_12.jpg

http://i304.photobucket.com/albums/nn180/mdformula350/XRay%20M18/22b2_12.jpg

http://i304.photobucket.com/albums/nn180/mdformula350/XRay%20M18/2367_12.jpg

http://i304.photobucket.com/albums/nn180/mdformula350/XRay%20M18/2474_12.jpg

http://i304.photobucket.com/albums/nn180/mdformula350/XRay%20M18/254d_12.jpg

I have been out of the hobby for quite awhile so plan to get back in it with this. Should be here by the end of the week hopefully for my first time racing this Saturday.

[aa240sx]

Nice ebay purchase first off.

I have to say though that several months after I posted this I actually tabled the purchase for a little bit. Like a few of you out there, my spending habits have been curbed significantly because of the economy. Anyway, this xmas my dad actually got me a Team Losi Mini LST2 truck. It's not the m18, but it will be much more durable and I can do more with it. I noticed your M18 came with the 2.4ghz spektrum/team losi radio/transmitter. that unit comes stock with the team losi mini lst2 and is worth every penny almost by itself. anyway, i've been having fun with the mini lst2 and will probably go w/ a brushless setup down the road. Or..maybe I will eventually get an m18. who knows?

[MdRC]

yeah I just got it today in the mail.

does your manual say anything about locking out reserve? I cant use reverse in races and need brake instead.

thanks.