HPI Super Nitro RS4 Rally

[Lille Buller]

What should i look out for when buying one of these?

I found a real bargain on a rs4 3 evo +
Comes with the orig 350Z greddy body, an ashton martin dbr9 and an skylini r34 Z-tune body, 2 sets of rims with tyres and a set of spare tyres.
Glow starter, a box of spares and 2.5l of nitro.

All for just over 100$
The car is rtr exept the pullstart is broken.

Its all stock as far as i know, so where are the weak spots?

[Old_School_RC_1]

Not many weak spots that I can think of, these cars are tanks. The Evo+ is a shorter version of the RS4 Rally. Great platform overall.

[Lille Buller]

Thanks, will go buy it then!

[Lille Buller]

I am now the proud owner of an allmost rtr rs4 3 evo+!
Just gotta replace the pullstart tho..
Sorta pricy..

[angrymelon]

Has anyone ever converted one of these to electric? I've seen a Nitro MT converted and I believe they use the same chassis as the rally car.

Here are a couple shots of mine, after I revived it from the dead, painted up a new body, wheels and tires.

http://i535.photobucket.com/albums/ee354/angrymelon/CIMG0635.jpg

http://i535.photobucket.com/albums/ee354/angrymelon/CIMG0642.jpg

-melon

[quickta]

your rs4 rally looks good angrymelon, do you have any pictures with out the body

[SuperNitro2010]

Has anyone ever converted one of these to electric? I've seen a Nitro MT converted and I believe they use the same chassis as the rally car.

-melon

Here is a link to an RS4 Super Nitro that has been converted to brushless electric (according to the seller anyway....)

http://cgi.ebay.com/HPI-SUPER-ELECTRIC-RS4-Brushless-/130427620761?pt=Radio_Control_Vehicles&hash=item1e5e178d99

-SN2010

[angrymelon]

your rs4 rally looks good angrymelon, do you have any pictures with out the body


Here ya go!

http://i535.photobucket.com/albums/ee354/angrymelon/CIMG0648.jpg

[angrymelon]

Here is a link to an RS4 Super Nitro that has been converted to brushless electric (according to the seller anyway....)

http://cgi.ebay.com/HPI-SUPER-ELECTRIC-RS4-Brushless-/130427620761?pt=Radio_Control_Vehicles&hash=item1e5e178d99

-SN2010

The only problem is that is a different chassis all together. Thanks for taking the time to check for me though!

-melon

[Old_School_RC_1]

Nice ride Melon, love the Evo Body.

There are a few homebrew conversions out there using bits and pieces of other conversions, and the SC conversion for the MT should work on the SNR as well. I'll be doing one myself! Don't run much nitro anymore.

[Lille Buller]

That evo body looks sweet!

[angrymelon]

Thanks everyone!

My goal is to convert the SNR to brushless without modifying the chassis in any way. This might be a far fetched idea, but I'm starting to believe the best approach might be to try and round up another chassis that I can butcher if I want:)

All of this might be moot soon anyway. I'm trying to get my hands on a used Kyosho DRX 1/9 Rally car to convert. Surprisingly, these cars are larger than the SNR.

-melon

[quickta]

Here ya go!

http://i535.photobucket.com/albums/ee354/angrymelon/CIMG0648.jpg



what tires are you running there in the picture

[angrymelon]

what tires are you running there in the picture

Those are Tamiya TGX Rally Block tires on HPI Racing wheels.

-melon

[quickta]

thanks, can you still get them

[quickta]

nevermind, found them at http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXNT48&P=8

[quickta]

I put some new tire and wheels on, with a couple of other new parts, hopefully the engine starts, it was locked up, any ideas on new shocks

[Lille Buller]

I might have to get a set of those rims on mine at some point..
They look soo cool!

[Old_School_RC_1]

quickta, HPI makes a set of threaded shocks that fit these cars - about as good as they come. Just measure the length of the stckers eye to eye and you'll know which length to get.

Are those TGX rally tires? I like them, whatever they are.

you guys are making me want to dig mine out and fire it up... :) Been on the shelf for a year or so.

[Race4life]

Hi there pips,

I switched from electric to nitro,

I just recently bought a used RS4 Super Nitro with a bad engine (15FE) the seller states that the engine was working fine from the last run that he had. Car has been sitting in his garage for more than half a year and he couldn't start it now.. I found some manuals on how to rebuild nitro 15 FE engine. I see a list of parts it goes over 60$... Isn't it better to add a few bucks and get a new engine?

What engine will you recommend guys for street racing? I know that if i put more powerful engine such as G3.0 or T3.0 it will ruin a transmission. Is there any mods to SNR tranny that will definitly improve it? I'm kinda new here so forgive me if i posted it in a wrong way. I rly need a good suggestion.

[angrymelon]

quickta, HPI makes a set of threaded shocks that fit these cars - about as good as they come. Just measure the length of the stckers eye to eye and you'll know which length to get.

Are those TGX rally tires? I like them, whatever they are.

you guys are making me want to dig mine out and fire it up... :) Been on the shelf for a year or so.

Dig it out and snap some photos, post'em then go drive the snot out of it:)

-melon

[angrymelon]

I put some new tire and wheels on, with a couple of other new parts, hopefully the engine starts, it was locked up, any ideas on new shocks


Looks sharp with that wheel and tire combo ;)

Did you ever get the thing running?

-melon

[angrymelon]

Hi there pips,

I switched from electric to nitro,

I just recently bought a used RS4 Super Nitro with a bad engine (15FE) the seller states that the engine was working fine from the last run that he had. Car has been sitting in his garage for more than half a year and he couldn't start it now.. I found some manuals on how to rebuild nitro 15 FE engine. I see a list of parts it goes over 60$... Isn't it better to add a few bucks and get a new engine?

What engine will you recommend guys for street racing? I know that if i put more powerful engine such as G3.0 or T3.0 it will ruin a transmission. Is there any mods to SNR tranny that will definitly improve it? I'm kinda new here so forgive me if i posted it in a wrong way. I rly need a good suggestion.

If you in fact have the Rally version running a slipper will help prevent damaging the drive-train. For just running around on the street I doubt it would help much. I'm not sure how much horsepower you can bolt into one of these things. The now vintage O/S 15CV-RX in mine produces 1.2HP and it's been ran like that since day one without any issues.

-melon

[Old_School_RC_1]

I run an .18SS in it with no issues at all, and have seen many modified with .21's. Drivetrain is super durable, bolt in however much horsepower you like. If it's set up and and installed correctly, you'll have no issues.

[SuperNitro2010]

I run an .18SS in it with no issues at all, and have seen many modified with .21's. Drivetrain is super durable, bolt in however much horsepower you like. If it's set up and and installed correctly, you'll have no issues.

Are there different models of the .18SS engine? i.e. shaft lengths, etc. Which one do you know would fit a stock Super Rally? I have a tried and true, but whooped and worn-out HPI 15FE. Looking for something to freshen the chassis up.

Thanks in advance for the info!

[Race4life]

I run an .18SS in it with no issues at all, and have seen many modified with .21's. Drivetrain is super durable, bolt in however much horsepower you like. If it's set up and and installed correctly, you'll have no issues.

So you got a super durable drivetrain, is it a stock drivetrain or you bought it separatly?

[Race4life]

If you in fact have the Rally version running a slipper will help prevent damaging the drive-train. For just running around on the street I doubt it would help much. I'm not sure how much horsepower you can bolt into one of these things. The now vintage O/S 15CV-RX in mine produces 1.2HP and it's been ran like that since day one without any issues.

-melon

My thing is Rally edition and it seems these kind of cars are discontinued .. :huh: Bro where do I order a slipper?

[Race4life]

Aiight i decided to go with (HPI Nitro Star T3.0 Engine RS4 - 18SS) and aluminium slipper. What about engine mounts? Old_School_RC_1 have you done any modification to ur stock engine mounts in order to fit 18SS engine?

[Old_School_RC_1]

So you got a super durable drivetrain, is it a stock drivetrain or you bought it separatly?

almost stock, have a RS4Evo 2 speed with option gears bolted in and center universals from my old MT.

The slipper is the same part used by the MT2.

No, my 18ss dropped right onto the the stock mounts.

I'll have to get some pics up....hopefully will get a chance this weekend.

[quickta]

Looks sharp with that wheel and tire combo ;)

Did you ever get the thing running?

-melon



I haven't started it yet, will try to start it this weekend, if it will not start then I will probably take the OS .15cv out of my RS4 racer and get something else for it, still need to get a two speed transmission and still want to get some new shocks

[Race4life]

Pics would be great especialy if u can zoom in ur engine and drivetrain i'll appreciate that. -One more question where can i get a new rechargable battery? I saw most people build rc bat. by themselves. Any suggestions?=) http://www.youtube.com/watch?v=xb9IacvCwUY

[angrymelon]

I use a 5 cell flat receiver pack. The pack sticks out the back of the radio tray a little, but doesn't interfere with anything. It's also 6V instead of the normal 4.8V packs. Here is a link to an inexpensive pack to give you an idea what to look for.

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXVRH8&P=7

-melon

[Lille Buller]

Wont it hurt the reciever to dump more volts into it than its meant for?

[Race4life]

Thanks for the source bro, great price for 1600 mah.

well i'm using 6v right now and my hitec reciever functioning well. However, I put a new engine ( T 3.0 HPI) and the slipper went bad on the 4th tank when i was trying to speed up a lil bit . I didn't even finish breaking in process. I'm so .. mad.. Is there a way to get a second gear for a stock tranny? I took my car to the nearest rc shop and they told me that i need a second gear or a new tranny w\ 2 gears which is 115 $. Help me out here guys where do i get a second gear for a stock tranny?

[Race4life]

2 gears tranny from HPI RS4 evo3 will it fit a stock Rally drivetrain box? what do u think guys ? I have a good deal on it but it comes w/o drivetrain box just a tranny by itself.

[Old_School_RC_1]

2 gears? You mean a 2-speed? There is no "second gear for the stock tranny," the stock set up is a single gear spool in the center. There's also a slipper center set-up and the two speed that can be installed.

Glad to point you in the right direction, just not sure what you are looking for. The gears for the above 3 options are different, so want to make sure you do not get steered wrong.

Pic of your tranny set-up would be helpful if none of this makes sense.

...and yes, the Evo3 2-speed will fit, though you'll need to change the gearing a bit to accomodate the taller super sized tires.

[Race4life]

http://img195.imageshack.us/img195/1851/2speedtranny.jpg

This is a tranny from evo 3+ that i'm about to get.

[Race4life]

http://img28.imageshack.us/img28/4787/2speedgearset.jpg

This HPI 2 SPEED SECOND GEAR SET is twice cheaper than the tranny from evo 3

Which one do i get? Do i need some extra parts?

[SuperNitro2010]

Does anyone have a Super Nitro Rally body or chassis for sale or trade?? Maybe for an R/C nitro heli, etc??? :D

[Gozzz]

Hey guys! Nice thread! I have had a SNRally for almost 5 years now and it's been a great car. I just recently got a newerish Subaru body from a forum member as my old one was beginning to show it's age.

Here are a few pictures:
http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7058.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7059.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7060.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7064.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7068.JPG

Mods so far (that I can remember):
Heaver duty silver diff cups and shaft drive cups
Soft diff springs in the front
GMP upper deck
Some kind of Tuned pipe (ebay years ago...)
TI turnbuckles
HPI racing fuel tank

That's all I can think of for now. I also upgraded to the T or G3.0 (which ever one has the normal crank) but that's not pictured. The new body I got is also not pictured. I'm running it with the Flysky gt3b radio and receiver.

So because I haven't read through the entire thread please tell me to search if the answer is here ;-) What I want to know is if anyone has been able to find side guards to bolt to the sides of the chassis? I'm talking about something similar to what is found on the Kyosho landmax?

Anyway I looked around at some other HPI cars for the answer and I found the Trophy. One version of it has side guards that look like they may fit the chassis with drilling for the mounting holes. Dose anyone have any experience with trying something like this?

Mike

[SuperNitro2010]

Hey guys! Nice thread! I have had a SNRally for almost 5 years now and it's been a great car. I just recently got a newerish Subaru body from a forum member as my old one was beginning to show it's age.

Here are a few pictures:
http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7058.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7059.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7060.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7064.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/IMG_7068.JPG

Mods so far (that I can remember):
Heaver duty silver diff cups and shaft drive cups
Soft diff springs in the front
GMP upper deck
Some kind of Tuned pipe (ebay years ago...)
TI turnbuckles
HPI racing fuel tank

That's all I can think of for now. I also upgraded to the T or G3.0 (which ever one has the normal crank) but that's not pictured. The new body I got is also not pictured. I'm running it with the Flysky gt3b radio and receiver.

So because I haven't read through the entire thread please tell me to search if the answer is here ;-) What I want to know is if anyone has been able to find side guards to bolt to the sides of the chassis? I'm talking about something similar to what is found on the Kyosho landmax?

Anyway I looked around at some other HPI cars for the answer and I found the Trophy. One version of it has side guards that look like they may fit the chassis with drilling for the mounting holes. Dose anyone have any experience with trying something like this?

Mike

Nice S/N Rally! The Scooby body is one of my favorites!! :D

[CrackerGee]

http://img28.imageshack.us/img28/4787/2speedgearset.jpg

This HPI 2 SPEED SECOND GEAR SET is twice cheaper than the tranny from evo 3

Which one do i get? Do i need some extra parts?

yes, the rs4 3 2-speed will work, but i recommend the 15/21T clutchbell and 49 and 43 spurs.

NMT, stock 1 speed is 15T and 52/spur so 15/49 is not far gear ratio wise, and that 2nd gear will get you fast high end speed:D

[Old_School_RC_1]

I hope that's not the NEW subaru body in your picture. :) The wheels are awesome, what kind are are they?

[Gozzz]

Nice S/N Rally! The Scooby body is one of my favorites!! :D

Thanks man! Funny thing... I was out driving it around last weekend with my son (he drives my old electric RS4 Rally) and a few kids stopped and complemented me on the car. One of them thought the bug eyed Subaru was the best! It was pretty cool to talk to them and show them how the car worked. Good times.

I hope that's not the NEW subaru body in your picture. :) The wheels are awesome, what kind are are they?

No that is the "runner" body. I'm trying to figure out how I can try to mend it up a bit and keep using it (I'm still searching around for good technics to try). The new(er) Subaru body I got from Showcase. He is on the forum here. It's in good condition but it also has one area I need to try to mend.

Here are some pictures:
http://dl.dropbox.com/u/24330382/HPI%20SNR/Bodies/IMG_7303.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/Bodies/IMG_7304.JPG

This is the Body I'm going to use on my Super Nitro RS4 when I get it assembled:
http://dl.dropbox.com/u/24330382/HPI%20SNR/Bodies/IMG_7305.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/Bodies/IMG_7306.JPG

These are the Tamiya Rally Block tires I'm running on it:
http://dl.dropbox.com/u/24330382/HPI%20SNR/Bodies/IMG_7307.JPG

They are not quite as wide as the HPI tires but they have a cool tread pattern:
http://dl.dropbox.com/u/24330382/HPI%20SNR/Bodies/IMG_7308.JPG

I wish I could tell you more about the wheels but unfortunately the only thing I remember is that I got them from a local Hobbytown USA about 4-5 years ago. I can't even remember the manufacturer :(

Here are a few pics of them close up:
http://dl.dropbox.com/u/24330382/HPI%20SNR/Bodies/IMG_7309.JPG

http://dl.dropbox.com/u/24330382/HPI%20SNR/Bodies/IMG_7310.JPG

I'm going to try to purchase a set of the black HPI mesh wheels next. I think they would look pretty awesome on the car.
http://www.hpiracing.com/graphics/parts/3036/3036_01m.jpg

It's to bad I can't seem to find any 2.2" treaded radial tires that will fit on it... I'll have to stick to the slicks.

Mike

[Old_School_RC_1]

Super sweet 350Z body, those are super rare. I have the Subie body on mine, and hpi slicks....and a large layer of dust. I think it's high time for the super class to come back to life!

[Gozzz]

Super sweet 350Z body, those are super rare. I have the Subie body on mine, and hpi slicks....and a large layer of dust. I think it's high time for the super class to come back to life!

Yeah I got it new probably round the same time I got those rims. I was running it on the Rally back when I had it setup for pavement. It will now go on a dedicated road car.

Dont you know dust is no good for these cars ;-) You need to get out and run them! I still don't get why they stopped producing them as they are a boat load of fun to drive.

So my super nitro RS4 is basically going to be 99% new. I think the only reused parts on it are the front one way diff, the fron upper bulkhead, front belt shaft and the bell crank steering.

Here she is :D
http://dl.dropbox.com/u/24330382/HPI%20SNR/SNRS4/IMG_7321.JPG

Mike

[Gozzz]

So I took a chance and ordered a set of OFNA xt2 stone guards off of ebay. I got them fitted this morning and overall they are a pretty good fit. The exhaust cut out is on the wrong side but it doesn't make much difference as the pipe clears the other side no problem. I'm also going to need to re bend the pipe hanger. I'll how to see how they hold up next time I go bashing.

Here are some pictures. Shiny but not for long.
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7336.JPG

(I didn't pay $15 for them ;-))
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7337.JPG

A little trimming for the steering arm.
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7341.JPG

Trimming for the roll bar/ handel.
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7343.JPG

Trim the excess off the rear.
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7344.JPG

Pipe hanger will need to be re bent.
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7345.JPG

Bottom view. I need to get a counter sink...
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7346.JPG

Mike

[Gozzz]

HPI T3.0 mounted.
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7347.JPG

Left side again. Looks like I'm going to need to invest ina 5 cell sub c flat pack... bummer :-) The regular 4 cell AA will fit but it's a tight squeeze.
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7348.JPG

A grenade textured water balloon to cover the rx.
http://dl.dropbox.com/u/24330382/HPI%20SNR/Stone%20guards/IMG_7350.JPG

Now there is snow on the ground... I'll need to drop in the waterproof servos I got and take it for a spin.

Mike

[SerpentCT4S]

I recently traded my MT2 for a Super Nitro Rally. I should receive the car tomorrow. I am very excited to get it!

Its in great shape, barely used. Comes with a mint Subaru body too!

I sold my MT2 as a roller, so I pulled out my OS 18 CV-RX motor and THS pipe. I have the purple aluminum motor mounts on the OS motor now. Will those mount to the Super Nitro directly?

I will post pics once it arrives!!

[Gozzz]

I recently traded my MT2 for a Super Nitro Rally. I should receive the car tomorrow. I am very excited to get it!

Its in great shape, barely used. Comes with a mint Subaru body too!

I sold my MT2 as a roller, so I pulled out my OS 18 CV-RX motor and THS pipe. I have the purple aluminum motor mounts on the OS motor now. Will those mount to the Super Nitro directly?

I will post pics once it arrives!!

Nice. The MT2 and the Super Nitro Rally are basically the same chassis. Just different control arms and other bits. The OS and mounts should bolt in no problem.

[Gozzz]

This looks pretty sweet. http://www.hpiracing.com/kitinfo/106949/ Anyone getting one?

Mike

[SerpentCT4S]

Just got my Super Nitro Rally in the mail today.

I traded my HPI MT2 for it. The Rally came with no motor, so I installed an OS 18 CV-RX engine and a THS pipe to it today. I also added new servos and my Spektrum receiver.

Can't wait to take it out for a spin tomorrow!

I will post some pictures tomorrow also!

[Old_School_RC_1]

Good trade! They are awesome cars....HPI should really think about bringing them back. 70% of the chassis is there with the MT2.

[CrackerGee]

Good trade! They are awesome cars....HPI should really think about bringing them back. 70% of the chassis is there with the MT2.

MT2 has "beefier" center shafts, you could of converted that to a super nitro rally by switching to super nitro arms, driveshafts, shocks and towers, and wheels and tires.

SerpentCT4S, i am also running my SNR with 18CVRX, get a 2-speed, and use a 15/21t clutchbell and 49/43 spurs...awesome top speed!:D

GOZZZ, that new hpi kit looks great! thanks for the link!

[Old_School_RC_1]

I made a Super Super Nitro out of my rally, some old MT parts, FW04 parts, and a few RS4 parts. Used RS4 shock towers and touring shocks to make it more of a shaft drive super nitro. (though I've since converted it back to rally)

I've heard that the Mini trophy dogbones fit in the larger diff outdrives and axles of the MT and it makes for a much more sturdy set-up, though I've yet to try it....it's on the list.

[SerpentCT4S]

MT2 has "beefier" center shafts, you could of converted that to a super nitro rally by switching to super nitro arms, driveshafts, shocks and towers, and wheels and tires.

SerpentCT4S, i am also running my SNR with 18CVRX, get a 2-speed, and use a 15/21t clutchbell and 49/43 spurs...awesome top speed!:D

GOZZZ, that new hpi kit looks great! thanks for the link!

I wanted an original Super Nitro, not a pieced together one.

Just bought a brand new 2 speed off ebay! Do I need anything else for it, or is everything there?

What is the stock gearing on the 2 speed?

[SerpentCT4S]

I just took out the car for a spin.

The car seems to run good during low RPM's but when I give it more throttle, it just sounds likes its revving. What can be the problem. Is it my clutch? Is my gearing wrong?

[Old_School_RC_1]

Check the clutch certainly, but I think you'd notice that more off the line. Check the setscrews on the diff outputs too. Could be they have worked loose.

[SerpentCT4S]

Check the clutch certainly, but I think you'd notice that more off the line. Check the setscrews on the diff outputs too. Could be they have worked loose.

The clutch is almost new, ran a few tanks while it was on my MT2. I installed a new clutch bell, a 13T. The clutch looked fine when I switched clutch bells. I did notice some fine black powder. Is that the clutch shoes wearing out and is that normal?

What gearing should I run with the OS motor? Right now, I am using stock gearing, 13/52. Also, what gearing should I run once I get my 2 speed?

I might get the racing clutch from HPI. Any opinions on it? Also, there seems to be two different ones. Can I use either of them?

Going to take some pics now, will post them soon!

Do you have pics of yours up here?

[SerpentCT4S]

Here she is!!

Tires are worn pretty low. I will be ordering a new set of tires/rims soon!

Let me know what you guys think.

http://i50.photobucket.com/albums/f311/RobF353/Super%20Nitro%20Rally/P1010077.jpg

http://i50.photobucket.com/albums/f311/RobF353/Super%20Nitro%20Rally/P1010078.jpg

http://i50.photobucket.com/albums/f311/RobF353/Super%20Nitro%20Rally/P1010079.jpg

http://i50.photobucket.com/albums/f311/RobF353/Super%20Nitro%20Rally/P1010080.jpg

http://i50.photobucket.com/albums/f311/RobF353/Super%20Nitro%20Rally/P1010081.jpg

[Old_School_RC_1]

The clutch is almost new, ran a few tanks while it was on my MT2. I installed a new clutch bell, a 13T. The clutch looked fine when I switched clutch bells. I did notice some fine black powder. Is that the clutch shoes wearing out and is that normal?

What gearing should I run with the OS motor? Right now, I am using stock gearing, 13/52. Also, what gearing should I run once I get my 2 speed?

I might get the racing clutch from HPI. Any opinions on it? Also, there seems to be two different ones. Can I use either of them?

Going to take some pics now, will post them soon!

Do you have pics of yours up here?


That's a beauty! That Impreza scheme is my favorite.

Yes, some dust is normal as it wears in, but a lot of it may indicate lots of slippage. I've run about 5 tanks on the racing clutch with no issues, and not a lot of dust, if any - works fine for me. If you pull the motor, does the drivetrain spin freely? Anything bindng?

Also, it occured to me that you may have a loose flywheel collet on the motor as well as that could also lead to it not accelerating fully....hard to say without it sitting here.

I cannot answer your gear question per-se, you'll have to experiment a bit.

You have a 4:1 ratio now on your single speed which seems ultra low to me, that's lower than MT gearing which is 15/52 (3.46), and taller tires to boot...your car sounds quite undergeared which might also contribute to your lack of top end. Those gears might have worked fine with the old low power HPI .15, but an OS .18 can easily pull a taller gear.

I don't know which 2 speed set you picked up - there's been a few different ones over the years. Using the gears that are commonly available, the RS43/EVO 2speed with stock gears is 2.61/1.95 so it's a bit too tall. Using a set of MT spurs with the same pinion gives you 2.88/2.22 so it's closer, but still might be a bit a little tall. Dropping the pinion to a 15/18 combo yields a 3.46/2.72 ...think that would be an ideal starting spot for a rally car - lots of low end for roosting, and a much higher 2nd gear than when you have now. The OS motor should be able to pull a taller gear if you want a little more top end. Maybe I'll take a peek at mine and see what I'm running. I did all this years ago, I don't remember at all what I ended up with.

Now, if you really want the melt the brain, HPI diffs can take Axial ring and pinion gears or RS43Evo gears. The stock gears are 13/38....you can stuff a 14/36 or possibly even a 13/43 set. though I have yet to try it - may not fit in the diff case. This gives you other options - change both to alter the overall gear ratio, or change one and have an overdrive-underdrive set-up - handy tuning tool for a rally car.

One thing I really like about this chassis is the options you can do. Platform and parts sharing among models is a beautiful thing. Hope all this helps.

No pics of mine. Yet. Been meaning to take some for a while. I'll see what I can do.

[SerpentCT4S]

That's a beauty! That Impreza scheme is my favorite.

Yes, some dust is normal as it wears in, but a lot of it may indicate lots of slippage. I've run about 5 tanks on the racing clutch with no issues, and not a lot of dust, if any - works fine for me. If you pull the motor, does the drivetrain spin freely? Anything bindng?

Also, it occured to me that you may have a loose flywheel collet on the motor as well as that could also lead to it not accelerating fully....hard to say without it sitting here.

I cannot answer your gear question per-se, you'll have to experiment a bit.

You have a 4:1 ratio now on your single speed which seems ultra low to me, that's lower than MT gearing which is 15/52 (3.46), and taller tires to boot...your car sounds quite undergeared which might also contribute to your lack of top end. Those gears might have worked fine with the old low power HPI .15, but an OS .18 can easily pull a taller gear.

I don't know which 2 speed set you picked up - there's been a few different ones over the years. Using the gears that are commonly available, the RS43/EVO 2speed with stock gears is 2.61/1.95 so it's a bit too tall. Using a set of MT spurs with the same pinion gives you 2.88/2.22 so it's closer, but still might be a bit a little tall. Dropping the pinion to a 15/18 combo yields a 3.46/2.72 ...think that would be an ideal starting spot for a rally car - lots of low end for roosting, and a much higher 2nd gear than when you have now. The OS motor should be able to pull a taller gear if you want a little more top end. Maybe I'll take a peek at mine and see what I'm running. I did all this years ago, I don't remember at all what I ended up with.

Now, if you really want the melt the brain, HPI diffs can take Axial ring and pinion gears or RS43Evo gears. The stock gears are 13/38....you can stuff a 14/36 or possibly even a 13/43 set. though I have yet to try it - may not fit in the diff case. This gives you other options - change both to alter the overall gear ratio, or change one and have an overdrive-underdrive set-up - handy tuning tool for a rally car.

One thing I really like about this chassis is the options you can do. Platform and parts sharing among models is a beautiful thing. Hope all this helps.

No pics of mine. Yet. Been meaning to take some for a while. I'll see what I can do.

When I removed my old clutch bell, there was quite a bit of the black powder. If it was slipping, how can I adjust that? When I had just the roller, the chassis seemed to roll fine. I will pull my motor again today and check again.

So my gearing for the single speed is off. What clutch bell should I bump up to? Maybe an 18?

The 2 speed I picked up is #A912, the one for the Super Nitro/MT2. Whats the stock gearing on that? What gearing should I use along with my OS motor?

Get some pics of yours, would love to see it!

Thanks for all the info and help by the way.

[Old_School_RC_1]

Sounds like the clutch is just worn. Can maybe get some more life out of it with sanding the glazing off the inside of the clutch bell, and off the shoes if it has it. Might be a good idea to invest in a new one regardless.

Why upgrade the single speed clutch bell? you have a 2-speed coming!

Believe stock gearing on the MT set is 13/52 and 16/49. I can't say it this is the right gearing for you or not - gearing is subjective. Some want more punch, some want higher top end. You'll have the same pull off the line with more top end than you do now with those gears. I'd say install it first and see what you think. Can always pick up another clutch bell for more options. A 15/18 CB would probably be a good bet though see where you are first before dropping the cash.

I'll take a look at what I have installed and report back.

[SerpentCT4S]

Sounds like the clutch is just worn. Can maybe get some more life out of it with sanding the glazing off the inside of the clutch bell, and off the shoes if it has it. Might be a good idea to invest in a new one regardless.

Why upgrade the single speed clutch bell? you have a 2-speed coming!

Believe stock gearing on the MT set is 13/52 and 16/49. I can't say it this is the right gearing for you or not - gearing is subjective. Some want more punch, some want higher top end. You'll have the same pull off the line with more top end than you do now with those gears. I'd say install it first and see what you think. Can always pick up another clutch bell for more options. A 15/18 CB would probably be a good bet though see where you are first before dropping the cash.

I'll take a look at what I have installed and report back.

What clutch do you recommend I run? The HPI racing clutch? There seems to be a few differnt ones. Do they all fit and are they all the same? I see on Tower they have #87191. Will that work fine?

[SerpentCT4S]

Do you know what size bearing I need to replace the bushings in the steering crank?

[Old_School_RC_1]

What clutch do you recommend I run? The HPI racing clutch? There seems to be a few differnt ones. Do they all fit and are they all the same? I see on Tower they have #87191. Will that work fine?

The HPI unit worked great for me. Only one I've tried.

Do you know what size bearing I need to replace the bushings in the steering crank?

No idea offhand 5x8? Download the manual to check to be sure. http://www.hpiracing.com/instructions/#Kits

[SerpentCT4S]

The HPI unit worked great for me. Only one I've tried.



No idea offhand 5x8? Download the manual to check to be sure. http://www.hpiracing.com/instructions/#Kits

I'm going to order the racing clutch later today, along with a few other things.

I found out that I need 4x8x3mm bearings for the steering. I am going to order those as well.

[SerpentCT4S]

When using the 2 speed, do I need any bearings for the clutch bell? I know the bearing I have in my single speed clutch bell now is the one that should be there, part #B046. Do I need to use that in the 2 speed clutch bell, or does it use 2 bearings?

[Old_School_RC_1]

Comes with all you need! It's a direct swap.

[SerpentCT4S]

Comes with all you need! It's a direct swap.

Nice! It shipped todat, should have it soon.

Going to place an order on Tower later. Going to order a new set of tires and rims, racing clutch, racing fuel tank and bearings for my steering.

[CrackerGee]

A 15/18 CB would probably be a good bet though see where you are first before dropping the cash.

I'll take a look at what I have installed and report back.

AGAIN, i highly recommend A824 clutchbell. you end up with 15/49 and 21/43 spur...do the math, that ratio would be good take off and awesome top end!

[SerpentCT4S]

Just got my 2 speed! Might put it on tonight, will post pics soon.

[SerpentCT4S]

Got the 2 speed all together.

I ran into a problem though. I ruined one of my bearings that go onto the transmission. I'll have to pick one up on Monday.

Also, what is the easiest way to put the transmission in and attach the center dogbones? I was having.trouble with that. Thats how i ruined my bearing. Any tips?

[Old_School_RC_1]

What are you having trouble with? Don't try and force it, take what you need to off the chassis to give yourself room to work on it.

[SerpentCT4S]

I was having trouble dropping the transmission back into the case and then attaching the dogbones. I guess I will have to take off the rear section of the car. Also, the upper deck where the throttle servo is gets in the way also. First, I need a new bearing.

How will this stock 2 speed gearing perform with the OS 18 motor?

[Old_School_RC_1]

Yeah, trying to sandwich it in never works. Have learned over the years to just do it the long way - less stress in the long run.

Should do well... Should have great acceleration

[SerpentCT4S]

So the best way is to take the rear section of the car off?

[andystoybox]

See my thread if any of you are interested in another SNRS4.

http://radiocontrolzone.com/showthread.php?p=2476338&posted=2#post2476338

[SerpentCT4S]

See my thread if any of you are interested in another SNRS4.

http://radiocontrolzone.com/showthread.php?p=2476338&posted=2#post2476338

Do you still have the McLaren body? Also, it looks like you have CVD's there. Are those for sale also?

[andystoybox]

I do have all of what is pictured... I just listed it last night.

PM sent

[SerpentCT4S]

I do have all of what is pictured... I just listed it last night.

PM sent

Didn't get a PM from you.

How much for those CVD's?

[SerpentCT4S]

Didn't get a PM from you.

How much for those CVD's?

Nevermind.......got it!

[SerpentCT4S]

Will parts #A521 and A522 fir the Super Nitro Rally? They are front and rear CVD's.

[CrackerGee]

I was having trouble dropping the transmission back into the case and then attaching the dogbones. I guess I will have to take off the rear section of the car. Also, the upper deck where the throttle servo is gets in the way also. First, I need a new bearing.

no no, no need to remove the entire rear section of the car! i just remove the the top cover of the transmission, insert the front shaft while hovering the trans., then do the same for the rear and it justs drops right in, works every time!

How will this stock 2 speed gearing perform with the OS 18 motor?
fair to good. ...not any faster top end than a one speed. but you be the judge, i've ran every possible gearing combo made for the SNR and 15/21T clutchbell is the best, imho

[SerpentCT4S]

no no, no need to remove the entire rear section of the car! i just remove the the top cover of the transmission, insert the front shaft while hovering the trans., then do the same for the rear and it justs drops right in, works every time!

Thanks, I'll give that a try!

fair to good. ...not any faster top end than a one speed. but you be the judge, i've ran every possible gearing combo made for the SNR and 15/21T clutchbell is the best, imho

I will test the stock gearing first. What spur gears do I run with the 15/21 clutch bell?

[CrackerGee]

49/43 spur gears, see previous post above..

[SerpentCT4S]

I just got my bearings.

I dropped the 2 speed into the gear with the dogbones attached. When i roll the chassis, there is some noise. Its not 100% smooth. It sounds like something is maybe grinding or touching something else.

Any ideas of what it could be?

[SerpentCT4S]

Also, I just noticed in the instructions for the 2 speed, it says to replace the silver spring inside the transmission with the black spring that is included when using an OS or more powerful engine. Is this a must? I'd really hate to pull everything apart again if I really don't have to.

[Old_School_RC_1]

Hold onto it for now. It controls the shift point - if you find you cannot adjust the 2-speed to your liking, then swap it out. I did the same thing, and the silver worked fine with my .18ss.

[SerpentCT4S]

Hold onto it for now. It controls the shift point - if you find you cannot adjust the 2-speed to your liking, then swap it out. I did the same thing, and the silver worked fine with my .18ss.

Yea, I'm going to hold onto it. I was just wondering if I should put it in now.

Also, any idea on why my chassis isn't rolling 100% smooth?

Will parts #A521 and #A522 (front and rear CVD's) fit the Rally?

[CrackerGee]

Remove the engine.
Push it, does it roll smooth now? If so, its your gear mesh...try the paper trick

[SerpentCT4S]

Remove the engine.
Push it, does it roll smooth now? If so, its your gear mesh...try the paper trick

I rolled it with the engine out and it still was perfectly smooth.

[SerpentCT4S]

I want to run the car, but I don't want to damage the gears if something is wrong.

Any ideas why its making some noise when I roll it?

[CrackerGee]

My guess, since it rolls smooth w/o the engine in, it has to be your gear mesh or something w/ your clutch or clutchbell..

[SerpentCT4S]

My guess, since it rolls smooth w/o the engine in, it has to be your gear mesh or something w/ your clutch or clutchbell..

Even without the engine, it doesn't roll perfectly smooth.

I will check my mesh and see what happens.

[SerpentCT4S]

I re-did my gear mesh and it seems to roll and make less noise than before.

Going to place an order soon for a new set of tires and rims. Can't wait to run this thing!

[SerpentCT4S]

Took out the car for a spin. I couldnt get it to shift into 2nd gear. I tried adjusting the shift point but had no luck. When looking in the tranny, which set screw should i be turning to adjust the shift point?

I took it inside and took out my tranny. I replaced the silver spring with the black spring, which the instructions called for. I havent ran it again, but i will tomorrow.

I will post tomorrow and let you know how it goes.

[CrackerGee]

adjust the set screw that s at an angle, not the one thats holding it to the shaft.