R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-26-2004, 05:47 PM   #1036
Tech Elite
 
wannabee's Avatar
 
Join Date: Jun 2002
Location: RUBBERNECK RACING Columbus, Ohio
Posts: 2,484
Trader Rating: 4 (100%+)
Default Re: Re: 28 mm Foams on the TC4

Quote:
Originally posted by RBLove
Parma 28mm foams fit without any modifications. The off set is a little different that the Jaco. Not too mention the Parma foams are simply awesome...............
Yep!!
wannabee is offline   Reply With Quote
Old 10-26-2004, 06:25 PM   #1037
Moderator
 
Speedo's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Posts: 3,431
Default

Can't say I'm impressed with the drivetrain on the new car. I just spent a little over an hour working on the rear gearbox alone (the front is tighter) and made little progress. The bearings are not the problem, the problem is that the diff and pinion gear are way too close together and make a grinding noise when rotated, and the gearbox ends up being the opposite of free.

I used a dremel to take material out of the top and bottom gearboxe halves behind the pinion gear. I also filed off part of the back of the pinion gear, and drilled a ton of material out of the slot for the pin in the pinion gear, witht the intention of allowing the pinion to be moved further away from the diff gear without rubbing on the gearbox.

The gearbox is now free for half the rotation, but the other half binds. I had the exact same problem with my TC3.

Josh
Attached Images
File Type: jpg p1010203.jpg (129.7 KB, 394 views)
Speedo is offline   Reply With Quote
Old 10-26-2004, 06:31 PM   #1038
Tech Master
 
Keith Billanti's Avatar
 
Join Date: Aug 2001
Location: BUFFALO
Posts: 1,794
Trader Rating: 15 (100%+)
Default

Quote:
Originally posted by Speedo
Can't say I'm impressed with the drivetrain on the new car. I just spend a little over an hour working on the rear gearbox alone (the front is tighter) and made little progress. The bearings are not the problem, the problem is that the diff and pinion gear are way too close together and make a grinding noise when rotated, and the gearbox ends up being the opposite of free.

I used a dremel to take material out of the top and bottom gearboxe halves behind the pinion gear. I also filed off part of the back of the pinion gear, and drilled a ton of material out of the slot for the pin in the pinion gear, witht the intention of allowing the pinion to be moved further away from the diff gear without rubbing on the gearbox.

The gearbox is now free for half the rotation, but the other half binds. I had the exact same problem with my TC3.

Josh
dont know what to tell ya bro.. my TC4, with only sprayed bearings is far more free than my TC3, which had HOURS of work in it.

My TC4 spins almost as long as my 1/12th scale rear axle.. and IT finds the heavy spot in the axle...

i forgot to mention in my first post, the only shims I used were on the input shaft.. it has one in it, to pull the pinion further away from the diff gear.

Tc4 trannys are dialed.

Keith
__________________
OUT
Keith Billanti is offline   Reply With Quote
Old 10-26-2004, 06:46 PM   #1039
Tech Addict
 
Join Date: Apr 2002
Location: Nebraska USA
Posts: 614
Default Your diff gear must be too

thick.
Nightbreed is offline   Reply With Quote
Old 10-26-2004, 07:20 PM   #1040
Tech Elite
 
AMGRacer's Avatar
 
Join Date: Oct 2001
Location: Brisbane, Australia
Posts: 3,939
Default

Quote:
Originally posted by Speedo
Can't say I'm impressed with the drivetrain on the new car. I just spent a little over an hour working on the rear gearbox alone (the front is tighter) and made little progress. The bearings are not the problem, the problem is that the diff and pinion gear are way too close together and make a grinding noise when rotated, and the gearbox ends up being the opposite of free.

I used a dremel to take material out of the top and bottom gearboxe halves behind the pinion gear. I also filed off part of the back of the pinion gear, and drilled a ton of material out of the slot for the pin in the pinion gear, witht the intention of allowing the pinion to be moved further away from the diff gear without rubbing on the gearbox.

The gearbox is now free for half the rotation, but the other half binds. I had the exact same problem with my TC3.

Josh
Must be a quality control issue, i built mine exactly as per the instructions with no hand fitting or modifcations and mine is absolutely smooth as silk.
AMGRacer is offline   Reply With Quote
Old 10-26-2004, 07:21 PM   #1041
Moderator
 
Speedo's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Posts: 3,431
Default

Yeah it sounds like a quality control problem.

I'll put a diff gear from my TC3 in there and see what happens.

Josh
Speedo is offline   Reply With Quote
Old 10-26-2004, 07:33 PM   #1042
Moderator
 
Speedo's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Posts: 3,431
Default

The diff gears included with the TC4 are 0.04mm wider than the gears I had in my TC3 - not enough to make a difference.

Josh
Speedo is offline   Reply With Quote
Old 10-26-2004, 07:41 PM   #1043
Tech Regular
 
bubbles's Avatar
 
Join Date: Aug 2003
Location: Urvyne
Posts: 322
Default

Tony, thanks for the answers!



I have noticed on my TC4's drivetrain, that the diff's move in the cases. This leads me to believe that the drivetrain should be slightly shimed more. In my car, if you tilt it to the left, then the rear gears bind and you can hear it. When you tilt it to the right, the front gears bind. Makes for a freeeeee drivetrain, but maybe adding one more shim on each side wouldn't hurt... I'll pick up some shims, to try this, the next time I'm at work.

Personally, I have had NO problems with front arms. We have front arms at SoCal(quite a few, might I add...), along with the TC4 Team Kit for $199.95.(This is in responce to many asking about where people get their TC4's from, and where you can find suspension arms...)

Last edited by bubbles; 10-26-2004 at 09:07 PM.
bubbles is offline   Reply With Quote
Old 10-26-2004, 07:48 PM   #1044
Tech Master
 
Join Date: Nov 2003
Location: Florida
Posts: 1,154
Trader Rating: 1 (100%+)
Default

Hey speedo....from your pictures im asuming your using the IRS lite drives.....all I can say is that out of the 4 pairs of IRS lite outdrives I have , not one of them gets shimmed the same to get things smooth.....and one of them ends up with a pretty tight binding gear mesh reguardless of the shimming(even with no shims)......IRS has pretty varying tollerances with many of their products....In my experience,their lite drives and especially their aluminum tranny input shafts are among the worst as far as this......not too long ago, after buying a set of their aluminum imput shafts,that only lasted two sundays of racing ,the owner of my local hobby shop let me go thru a dozen different packs of them......not even one set was the same.....some of them, including the ones I bought had over a 9 thousanths taper to them.......which let the inner race of one of the bearings spin on the shaft, and self destruct.......try another pair of outdrives or try the stock plastic ones just to tell for sure
__________________
1/8 Scale: Tekno EB-48.2... Tekin RX-8 GEN-2 W/2050kv... Airtronix M11-X Radio... HiTec HS-7954SH Servo...

1/10 Scale: Associated B-5(rear motor)...Tekin RSX Gen-2 W/8.5t... Savox SC-1258-TG Servo
Joe B is offline   Reply With Quote
Old 10-26-2004, 08:20 PM   #1045
Tech Fanatic
 
Charlie O's Avatar
 
Join Date: Dec 2003
Location: Corona, Ca
Posts: 741
Default

NTC-3 to TC-4 bumper conv.
Attached Images
File Type: jpg ~ce8.jpg (199.8 KB, 394 views)
Charlie O is offline   Reply With Quote
Old 10-26-2004, 08:33 PM   #1046
Tech Elite
 
Join Date: Nov 2002
Location: Pasadena, CA
Posts: 2,487
Trader Rating: 5 (100%+)
Default

Quote:
Originally posted by Speedo
Can't say I'm impressed with the drivetrain on the new car. I just spent a little over an hour working on the rear gearbox alone (the front is tighter) and made little progress. The bearings are not the problem, the problem is that the diff and pinion gear are way too close together and make a grinding noise when rotated, and the gearbox ends up being the opposite of free.

I used a dremel to take material out of the top and bottom gearboxe halves behind the pinion gear. I also filed off part of the back of the pinion gear, and drilled a ton of material out of the slot for the pin in the pinion gear, witht the intention of allowing the pinion to be moved further away from the diff gear without rubbing on the gearbox.

The gearbox is now free for half the rotation, but the other half binds. I had the exact same problem with my TC3.

Josh
Speedo, I had a binding problem too until I removed the bevel gear and took off all the flashing from the backside of the gear. It was not allowing the gear to seat properly
DOTMAN is offline   Reply With Quote
Old 10-26-2004, 09:10 PM   #1047
Moderator
 
Speedo's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Posts: 3,431
Default

I will try using plastic diffs and see if that makes any difference. I am surprised that something that is machined could have such terrible tollerances, but I guess it is possible.

DOTMAN, thanks for the tip, but there is no flashing left on the pinion gear.

Josh
Speedo is offline   Reply With Quote
Old 10-26-2004, 09:27 PM   #1048
Tech Elite
 
AMGRacer's Avatar
 
Join Date: Oct 2001
Location: Brisbane, Australia
Posts: 3,939
Default

Not to sound like a jerk, but i see a bunch of people using aftermarket parts into the TC4 ending up with some drivetrain issues. I built mine with no aftermarket parts. Mayby try the kit as it is without aftermarket parts and see the fit and finish first, perhaps the aftermarket parts are a little off?
AMGRacer is offline   Reply With Quote
Old 10-26-2004, 09:31 PM   #1049
Tech Addict
 
Join Date: Apr 2002
Location: Nebraska USA
Posts: 614
Default NTC3 bumper conversion...

I think it will be much better protection for my TC4.
Attached Images
File Type: jpg pa260200.jpg (72.6 KB, 276 views)
Nightbreed is offline   Reply With Quote
Old 10-26-2004, 09:35 PM   #1050
Tech Elite
 
AMGRacer's Avatar
 
Join Date: Oct 2001
Location: Brisbane, Australia
Posts: 3,939
Default Re: NTC3 bumper conversion...

Quote:
Originally posted by Nightbreed
I think it will be much better protection for my TC4.
What shocks are those?
AMGRacer is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Team Losi XXXS G+ with parts!! Team Orion V2 Hitec 5625 cola R/C Items: For Sale/Trade 9 06-18-2008 08:11 PM
BATTERIES - Team Orion 4200 SHO Team Cells (6 cell) packs................... For Sale 2-Bad Australia For Sale/Trade 0 03-21-2008 02:16 AM
New Items for Sale Tamiya F103gt Chassis Kit, Team Much More CTX-D, Novak, Team Orion Tsquare R/C Items: For Sale/Trade 14 04-17-2007 08:29 PM
>>> BRAND STINKING NEW NEVER RAN TEAM JAMMIN FACTORY TEAM FTE RACING BUGGY <<<< mach51 R/C Items: For Sale/Trade 5 01-25-2007 09:13 PM
F/S Team Associated Factory Team RC18T with Mamba Comp X Brushless and Extras ZeroCool101 R/C Items: For Sale/Trade 7 01-07-2006 01:54 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 11:58 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0