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Old 01-06-2005, 05:38 PM   #2461
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Default Re: help with diff

Quote:
Originally posted by 1shnot
Hi guys...
just ran my tc4 for the first time ....
Broke front diff out drive, so I got the steel ones and now, they don't stay.. keeps backing off and ends up being 2wd... (I've also got some extra parts, like round diff rings and longer nut and i used a little spacer on the bottom b4 the longer white nut)

HELP!!!!!!!!!!!
Hmmmm, sounds like it was built wrong.

You should have the thrust assy on the side with the bolt head and the other side should be the spring and t-nut. There shouldn't be a white spacer there. There is a little white cover that goes on the side with the thrust assy after everything is together.
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Old 01-06-2005, 05:59 PM   #2462
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so spring should be under the white nut? ..
I thought I've built it(rear) diff long screw then thrust , then spring under....

either way I'll have to take it apart any whom, so I will try that.

Thanks alot for your help

Last edited by 1shnot; 01-06-2005 at 06:08 PM.
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Old 01-06-2005, 06:48 PM   #2463
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Quote:
Originally posted by EricF
Joe,
do you have a prt number for the bit, is it made by dremel?
Thanks,
E
I am using some cheap smooth circular stone bit with a flat bottom. You can buy that bit in any hardware store around.
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Old 01-06-2005, 07:10 PM   #2464
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Default

Quote:
Originally posted by 1shnot
so spring should be under the white nut? ..
I thought I've built it(rear) diff long screw then thrust , then spring under....

either way I'll have to take it apart any whom, so I will try that.

Thanks alot for your help
You did build it that way with the plastic diffs. The plastic and steel ones are opposite. Like stated above, the thrust assembly goes in the "short" outdrive and the spring goes in before the white nut on the long side.
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Old 01-06-2005, 09:49 PM   #2465
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Default thanx!!!

thanx alot for your advise.....
It worked, just curious.. I'm not a newbie, without any instructions , how could I have figure this out with out coming to forum?

I driven xray for about 3 yrs (and by no means I'm trying to start up this "xray is better" business) and I've never had anything like this before.......... but how are we suppost to figure it out?

I could of asked someone at the track, but at that moment no one was available

Anywhom, again thank you for quick reply...

Joon kim
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Old 01-06-2005, 09:56 PM   #2466
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I've been building AE cars since the old 6 gear tranny. I knew because my TC3 was part of the first batch that came out and they came with steel diffs. AE probably should include instructions with both sets of diffs due to people not being in the know on how to build each of them. Oh well I guess thats why we have rctech.

They don't include instructions with things as complicated as a diff but they will hold up the release of the anti-roll bar kits because the instructions werent done. Go figure.
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Old 01-06-2005, 10:00 PM   #2467
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Default BMI-TC4 update

The car really came alive tonight. I chnaged a lot of things on it all to increase corner speed and maintain drivability. I got it to steer liek made and got it lazy too. IN the end i am very happy with the set-up. I will talk to Jason tomorrow about it-but it seems ready to me.

I might get a pre-production car soon with all the chnages we discussed and run it another week-then its for sale.

Ray
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Old 01-06-2005, 11:31 PM   #2468
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Here's a picture to show the diffs assembly side by side.
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Old 01-06-2005, 11:40 PM   #2469
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Diff picture
Attached Images
File Type: jpg diffpic.jpg (16.2 KB, 243 views)
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Old 01-07-2005, 03:03 AM   #2470
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Default Re: BMI-TC4 update

Quote:
Originally posted by rayhuang
The car really came alive tonight. I chnaged a lot of things on it all to increase corner speed and maintain drivability. I got it to steer liek made and got it lazy too. IN the end i am very happy with the set-up. I will talk to Jason tomorrow about it-but it seems ready to me.

I might get a pre-production car soon with all the chnages we discussed and run it another week-then its for sale.

Ray
Hey Ray are you ever going to put that thing on a scale or what
-Dave
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Old 01-07-2005, 03:43 AM   #2471
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Default TC4 by kai

http://www.kmodels-kai.com/tc4kai.htm
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Old 01-07-2005, 06:05 AM   #2472
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Quote:
Originally posted by 1shnot
so spring should be under the white nut? ..
I thought I've built it(rear) diff long screw then thrust , then spring under....

either way I'll have to take it apart any whom, so I will try that.

Thanks alot for your help
Here is the link to the instructions for the steel diff:

TC3-TC4 Steel Diff

Later,
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Old 01-07-2005, 06:06 AM   #2473
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Default Re: BMI-TC4 update

Quote:
Originally posted by rayhuang
The car really came alive tonight. I chnaged a lot of things on it all to increase corner speed and maintain drivability. I got it to steer liek made and got it lazy too. IN the end i am very happy with the set-up. I will talk to Jason tomorrow about it-but it seems ready to me.

I might get a pre-production car soon with all the chnages we discussed and run it another week-then its for sale.

Ray
Ray, good to hear the car is doing so well. Give me a call if you get a chance.

Later,
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Old 01-07-2005, 07:42 AM   #2474
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Has anyone here done any serious experimenting with the shims under the pivot supports? It seems that there are soo many ways to setup the car using the different shims just wondering if anyone has had any specific success with a certain setup.

Edit: Is everyone running the 2* rear toe blocks? Im seein them everywhere
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Old 01-07-2005, 08:58 AM   #2475
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Default Re: Re: BMI-TC4 update

Quote:
Originally posted by JDM_DOHC_SiR
Hey Ray are you ever going to put that thing on a scale or what
-Dave
OH-yeah-here goes.

With:
NOvak GT7 and 12 gauge wire and cap and Schottly
All aluminum hingepin blocks
KO 301 receiver
LT wt. Steel front diff
All steel screws and ballstuds.
2.25" foam tires
Parma Alfa

53oz. If I put alum screws and my GTX and 302 Receiver-Easily 51oz.
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