R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 10-30-2004, 11:21 PM   #1
Tech Addict
 
Join Date: Apr 2004
Posts: 690
Trader Rating: 1 (100%+)
Default TC3 Drive Train

I am having a real problem with freeing up my drivetrain in my TC3. I have cleaned the bearings good and gone through the diffs but when I get it all back together it still feels kinda bound up. Any tips on how to get this to go away? O, and are you guys who are still drivin this car having problems with it drifiting down the straights? A couple of the guys with the TC3 are drifting left all the way down the straight.
runnin rc10 is offline   Reply With Quote
Old 10-30-2004, 11:24 PM   #2
Suspended
 
Join Date: Oct 2004
Location: Nebraska but i still hate the huskers
Posts: 267
Default

make sure it is shimmeed right and that you are not over tightening the diff cases and pinching the bearings
Team_ass.4ever is offline   Reply With Quote
Old 10-30-2004, 11:39 PM   #3
Tech Addict
 
Join Date: Apr 2004
Posts: 690
Trader Rating: 1 (100%+)
Default

what exactly is being shimmed? Im not seeing any shims in it at all. I will make sure not to overtighten though
runnin rc10 is offline   Reply With Quote
Old 10-30-2004, 11:53 PM   #4
Tech Fanatic
 
Chill Will's Avatar
 
Join Date: Oct 2003
Location: The Dirty South
Posts: 804
Default

If you have not done it already, buy the NTC3 cases. They are the updated diff cases. They will free up the tranny. You will need to get a shim kit cause it will be too much play in the tranny. Also like Team_ass.4ever said, make sure you don't tighten the diff cases down too tight. Also dont tighten the little brace that holds down the drive shalf bearing next to the spur gear. When you shim the diff, put the shims in so it won't bind the diff gear and the gear on the shaft.
Chill Will is offline   Reply With Quote
Old 10-31-2004, 12:03 AM   #5
Tech Apprentice
 
rcinsight's Avatar
 
Join Date: Oct 2004
Location: Capitol, MI
Posts: 63
Default

The lates t issue of Touring Car shows how to Dremel the recesses for the large diff bearings.

If you can hold the diff and the bearing will not fall out on its own weight then too much pressure is applied to the outer bearing race and that will cause drag.

The bearing should not need to be coaxed into the the diff.

The new mold is smoother and addresses this concern.

These parts are standard in the TC4.
rcinsight is offline   Reply With Quote
Old 10-31-2004, 06:56 AM   #6
Tech Fanatic
 
Chill Will's Avatar
 
Join Date: Oct 2003
Location: The Dirty South
Posts: 804
Default

rcinsight- I saw that ad. I tried doing it. It worked but I found that it was eaiser buying new cases. I needed them anyway but it was a lot easier.
Chill Will is offline   Reply With Quote
Old 10-31-2004, 07:24 AM   #7
Tech Regular
 
Join Date: Dec 2003
Location: Rochester, NY
Posts: 441
Trader Rating: 2 (100%+)
Default

there is a lot more than just dremeling...

make sure your bearings are clean, and your cvd's aren't binding...

dont over tighten down the bearing support in front of the spur gear. just snug the cases dont crank them down...

build the case in your hand, then install the whole module in the car...

i dremeled every place a bearing rides...

cleaning the carpet fibres from the bearings makes a big difference. I run with no bearing seals but rebuild my drivetrain weekly.

If you are running your stock bearings and have never cleaned them, by default they are in thick grease which make the bearing feel smooth, but has a lot of drag... however by cleaning them, you increase the maintenance involved in your bearings.

hope this helps!
MManson is offline   Reply With Quote
Old 10-31-2004, 07:27 AM   #8
Tech Regular
 
Join Date: Dec 2003
Location: Rochester, NY
Posts: 441
Trader Rating: 2 (100%+)
Default

if your car is drifting to the left.. how much toe are you running in the front?..
MManson is offline   Reply With Quote
Old 10-31-2004, 07:31 AM   #9
Tech Master
 
burbs's Avatar
 
Join Date: Feb 2004
Location: wisconsin
Posts: 1,152
Trader Rating: 1 (100%+)
Send a message via AIM to burbs Send a message via Yahoo to burbs
Default

the car pulling could also mean a bad bearing.. this could also be why u can not get it free enough...
burbs is offline   Reply With Quote
Old 10-31-2004, 07:38 AM   #10
Tech Regular
 
Join Date: Dec 2003
Location: Rochester, NY
Posts: 441
Trader Rating: 2 (100%+)
Default

good catch burbs! i never thought of that...
MManson is offline   Reply With Quote
Old 10-31-2004, 09:17 AM   #11
Registered User
 
Join Date: Jun 2004
Location: ROAR HAD ME BANNED FROM RC TECH.
Posts: 2,025
Trader Rating: 2 (100%+)
Default

Each time I reassemble my car I put the bearings on a axel and make sure they spin free. It doesn't take much debris to make them bind.

I've also found the car much more free after running it without any shims anywhere. I doubt shimming it will free it up any.

I assemble the cases in the car, starting from the rear. Once a portion is buttoned up, like the rear diff, spin it and make sure it's free. Ad a CVD-axel assembly, spin it and make sure it's free, and continue through the whole car. I can usually find which part isn't as free this way. I also never tighten anything down, I just tighten the diff case screws until they barely contact the upper case.
Desolas is offline   Reply With Quote
Old 10-31-2004, 10:45 AM   #12
Tech Master
 
burbs's Avatar
 
Join Date: Feb 2004
Location: wisconsin
Posts: 1,152
Trader Rating: 1 (100%+)
Send a message via AIM to burbs Send a message via Yahoo to burbs
Default

properly shimming is a must.. running without shims wil only shorten the life of the bearings... the little bit of slop the shims take away is very harmfull... it causes un needed force and presure against the bearing... the shim will keep a solid contact and not let it be as abused.. it wont make it spin any more free.. but will assure when it is free it will be longer...
burbs is offline   Reply With Quote
Old 10-31-2004, 12:16 PM   #13
Tech Addict
 
Join Date: Apr 2004
Posts: 690
Trader Rating: 1 (100%+)
Default

so im trying to shim the gears so that mesh better to provide longer life once the tranny gets free. I also am getting ceramic bearings, but I will buy the ntc3 cases and see how much that helps. Thanks a lot.
runnin rc10 is offline   Reply With Quote
Old 10-31-2004, 10:24 PM   #14
Tech Elite
 
Join Date: Nov 2002
Location: CORONA , CALIF.
Posts: 4,054
Trader Rating: 1 (100%+)
Post cases..

Quote:
Originally posted by runnin rc10
so im trying to shim the gears so that mesh better to provide longer life once the tranny gets free. I also am getting ceramic bearings, but I will buy the ntc3 cases and see how much that helps. Thanks a lot.
if you do get the ntc3 cases . make sure you chk that the shock towers fit correctly .. make sure the mounting screws are correct ,, I changed cases and had problems mounting the shock towers ..
__________________
Mark Barden .
mb racer is offline   Reply With Quote
Old 11-01-2004, 10:46 AM   #15
Tech Regular
 
Join Date: Dec 2003
Location: Rochester, NY
Posts: 441
Trader Rating: 2 (100%+)
Default

u don't need to get new ones, just some patience and guidance working with your existing ones...

I have first gen RTR ones, and it spins freer than the guys that have switched to the ntc3 ones, and even the tc4 ones onthe new cars...

why spend more money on something that can be accomplished for free with a little time and patience?
MManson is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cyclone 18 Tooth Drive Train Crashmaster R/C Items: For Sale/Trade 7 03-16-2008 05:17 PM
NT1 drive train installed in the MTX4? TomB Nitro On-Road 27 12-19-2007 03:59 AM
Associated TC4 help please - differential/drive train problem vthenry07 Electric On-Road 2 05-31-2007 10:58 PM
PRO4 DRIVE TRAIN HELP serpentrush Electric On-Road 9 01-24-2006 10:50 AM
V1RR drive train Q in search of A Tom G Nitro On-Road 14 03-08-2004 03:28 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 03:34 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net