Green Machine gearing

[Da Blur]

n/m I'm just gonna get a different stock motor but still i need to know what is good gearing or stock motors

[This message has been edited by Da Blur (edited 04-09-2001).]

[Railman]

Da Blur, How can anyne answer that? You gave 0, zilch, nada info. What type of car, on road, off road, GM3 motor, or what?

[Da Blur]

I'm incredibly sorry. I'm getting either a Tc3 or a Pro 3(HPI). I think i'm either gonna get the Orion RS27 or the P2K. I was looking around at some other topics on the GM3 and well now I definitely won't be getting one.

[BadRacer]

The GM3 is NOTa bad motor. Iv been running it in my XXX-T for about 3 months now and it runs awesome.

All you gotta do with this motor is make sure you take care of it....i mean get the com cut after 8 or so straight runs, clean it out with motor cleaner and lube it up. Just the simple things will keep the motor running smooth.

In my opinion i like the GM3 more then i do my P2K and Orion Chrome RS. This motor is blazing fast and is very good when it comes to run times.

Iv heard ppl saying that their GM3 went up in smoke. I only have one thing to say about that "GEARING IS NOT RIGHT FOR THE MOTOR". This motor has a different powerband than the P2k and in most cases will require the use of a pinion gear 1 to 2 teeth smaller.

All im trying to say is don't take the chance and not try this awesome motor due to what others have said. If you still don't want to try the GM3 your next closes thing to this motor is the P2k.

Good luck
BadRacer

[Nairb]

Wow, you're having success running a GM3 in a XXXT, eh? I'm very surprised, after my experience doing the same thing. What gearing are you running and what size track do you race on?

[Nairb]

^^^ Hey, I wanna know ^^^ Thanks.

[ImprezaWRC]

Had a GM3....didn't like it. Not because it smoked though, but because the P2K had more gearing options. The P2K was more tolerant, and better for fooling around with. My GM3 didn't like me very much.

Had a Reedy MVP for a few days though, and this motor is pretty bomb! It's nice and fast, plenty torquey, and runs pretty cool, but like the GM3, it's more sensitive to gearing.

[BadRacer]

Im running my GM3 with a 88 spur and 18 to 19 tooth pinion....just depends on what i plan to do on the track.

I run on a tight track that is farely mid size with one straight away. I don't know the exact size of the track, and you never get a chance to reach top speed untill you get to the straight.

My P2k, Reedy Rage, and Orion Chrome RS have be out of the picture since i got the GM3.....well if the GM3 goes to the big R/C heavan in the sky it looks like ill have to use the old boys stilling all alone in the bit box!

Another thing when i got it is replaced the brushes and springs before it was even hooked up to a batt. I replace the brushes with a set of RC4500 and the springs are RC4395 "red" on the positive and RC4393 "green" on the negative.

Keep it Real.
BadRacer

[Nairb]

Wow, that's amazing! I was using my GM3 with a very low ratio (17/84 = 4.94:1) on a medium small track and it got toasted. You're using a GM3 on a medium small track similar to mine with higher gearing (18-19/88 = 4.88 - 4.63) and you're not having problems? Lucky guy... I bet you'll eventually have a problem with it. Mine was alright for about a month, then it smoked on me. Anyway, what are its numbers? I'm curious.

[Grizzbob]

Bad Racer, were you running at Adams Creek Saturday? I was there, but I was pretty preoccupied with dialing in my TC3..... :)

[RallyDriver]

i cant decide between the GM3 and the P2K!

the gearing: the manual to your car kit should tell you! mine says a 20t pinion and a 78t spur??

[Grizzbob]

I wouldn't count on that. The suggestions they give you in the car's manual are usually based on testing they do locally(in California, most likely), on a lot of big, high speed tracks. When speed is your only concern, then those suggestions may be quite useful, but if you have to deal with a small, tight track, those same ratios will put a tremendous strain on your motor, & it will run sluggishly & possibly overheat . If you run on a small, tight track, then I'd say a P2K is a good idea, it has lots of torque & can take plenty of abuse(its generally regarded as one of the coolest running stock motors around). If you're on a bigger, speed track where you need to carry speed more, then a high-revving motor like the GM3 may work better for you, as it actually has more torque at mid-high rpm than a P2K, so it carries its speed very well..... :)

[BadRacer]

Gizzbob i wasn't at Adams Creek last Satuday....wish i could have. I was with my family.

Im trying to get a body and someone named Sunny (i think) to paint my body for me. Untill then i won't be out there, i might be there this weekend getting some stuff for my truck and to stay and watch all the LUCKY guys run their trucks and cars. Maybe ill run into you....im 17 and my 65 Stang needs a new carb which will be here next weekend so thats whats keeping me away also.

Cant wait till the Holey comes and my car is up and running.

[ 04-17-2001: Message edited by: BadRacer ]

[Grizzbob]

That's cool. I know Sonny, he's a good painter.... :) I can also understand about having limited time or money(I started racing when I was in college, talk about limited time & money, lol), but if you have a classic 'Stang, then I should have no trouble spotting you(I used to have a '69, & I was in Green Country Classic Mustangs for a few years, learned alot about them). By the way, while I'm not sure it's quite ready for just anyone to bolt in & go, I am definitely making excellent progress with my MVP's, one is already pulling more torque at all rpm than any P2K I've tested, & hitting a higher top end to boot(now I just gotta figure out the right gearing, lol), I get the feeling it will fulfill it's advertised potential....... :)

[R/C Homie]

i'v been runnin my gm3 in my truck (stampede) with fairly higher gearing and no probs till i tryed to pull bout 6pounds up a small hill hahahha i burnt my moter and body sad huh otherwise that moter wuz great to me for about 3 monthes won a B Main with it head to head against a B3 oh and its good for runnin over B3's when ur racing tares um up good at high speed hehehehehehe should have seen that guys face :mad: here wuz mine :rolleyes:

[BadRacer]

I don't think my car will be ready this weekend.....i might just have to see if my mom will be nice enough to let me have hers. LOL :D

Sonny had a painted XXX-T body for sale...a whopping 48.00$ and i picked up a smaller spur, pinion and Aluminum motor plate.

Ill be out there for sure Sat. around 3:00.

All you gotta do is look for a XXX-T thats white in the front that fades to yellow flames and the rest is blue.

Man can Sonny paint AWESOME! Wish i could paint like that!

BadRacer :cool:

[primuswoostinkinhoo]

hey i got a tc3 and a gm3 right now i have a 24 pinion and the stock 72 spur can i go any higher? am i too high?
not a gm3 quesiton but what can i run with a p2k in my b3 i think right now i got a 24 pinion and whatever the stock spur is im thinkin 87

[Nairb]

Post a pic, BadRacer. Let's see just how good this guy is. :)

[Grizzbob]

Oh, I can help with that, BadRacer. I have a Sony digital camera, whenever you want to do a pic, just clean up your truck & let me know, & I'll bring it to the track. It stored them on floppies, & from there I can email it to you if you like.... :)

[BadRacer]

Nairb i would have posted a pic when i first got my Losi.....but i don't have a scanner or a digital camera.

Im gonna have to take a regular pic and scan it on one of my familys computer....ill try and make that real soon.

And to the question that primuswoostinkinhoo asked i "i have no clue on how to gear the GM3 in a buggie or a TC".

Ill try my hardest to come up with a way to post a pic.....if i do the topic will be like "Pix of my XXX-T"

BadRacer :cool:

[rc51racerx]

Da Blur,
If I were you, and I wanted to see which motor to use, I'd ask someone at the track if you can run theirs. I was down at my LHS one day and was about to buy a motor when guy asked me which one I was going to get. Well I mean come on there is a whole rack of these gleaming motors all saying "pick me, pick me!!!" I took the car over to the track and found a nice looking guy with lots of motors and asked if I could try one of his out. he said sure, take it for a few laps and see what you think. I ran a GM3, P2K, and a hot mod. I like the P2K for the tight track because you can't ever get the mod motors wound out to experience the speed. The guy was very cool, and this may not work everywhere, but its worth a shot. If no one will let you take a test lap or two then just ask a few questions, see what they are running at the track and feed off the information you find. I have heard a lot about the GM3 overheating and such, but I have seen them running and no one down at the track seems to be complaining too much. Gearing with it is CRITICAL though. whatever you do, have fun with it. remeber that the GM3 has more RPM's, but the P2k has some torq numbers.

My posts are getting longer and longer and longer heheh ;-)

--John