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Old 02-24-2008, 04:10 PM   #11011
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what was wrong with the old ball diff? Also what is being changed to 3mm, the diff balls, thrust balls, or both? or am i completely off
Other than some people having problems with the screw, nothing is wrong with it. The diff balls is what will be 3MM.
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Old 02-24-2008, 07:18 PM   #11012
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tonight I ran my rubber tire/carpet car for the first time. So i drove it around the track really slow but if i tap the board just once, literally just once...CRACK! the passenger side C-hub and steering block would break into peices. Car has some ghetto looking soft/medium bumper.

The car was going no more than 10mph. 3x in 1 day, i couldnt get around the track without tapping the board once lightly on the right side and if I tapped it breaks.

Now for the strange part. My foam tire/carpet car has aluminum steering knuckles/c-hubs and a Parma front bumper. I can wack the boards at 30mph and keep going.
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Old 02-24-2008, 09:03 PM   #11013
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I just spent 40 bucks to re build my diff to have the new one come out? Darn!

I wonder how much better it is? I wish they were sealed like the xray diff
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Old 02-24-2008, 09:20 PM   #11014
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$40 to rebuild your diff? How?

-HB Diff screw/t-nut $5
-HPI D cut rings $2
-diff balls (12) steel $.12 cents
-thrust balls (6) steel $.06 cents
-HPI thrust washers $3
-Motor spray (free)

I came out with $10
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Old 02-24-2008, 09:25 PM   #11015
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Originally Posted by B18C Turbo View Post
$40 to rebuild your diff? How?

-HB Diff screw/t-nut $5
-HPI D cut rings $2
-diff balls (12) steel $.12 cents
-thrust balls (6) steel $.06 cents
-HPI thrust washers $3
-Motor spray (free)

I came out with $10
I mean replace..........

Outdrives are 25 bucks..... Diff balls are carbide balls (11 bucks) 600 grit sandpaper (4 bucks I think)

I didnt get a spring, screw, nut, or pulley....... Everything else was new
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Old 02-24-2008, 09:25 PM   #11016
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we are having the same problem with the diff screw no more problem local racer at the track fixed that problem for me im now useing the TC5 screw 10 runs on it no problems
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Old 02-24-2008, 09:27 PM   #11017
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we are having the same problem with the diff screw no more problem local racer at the track fixed that problem for me im now useing the TC5 screw 10 runs on it no problems
Or you drill out the outdrives, and when the screw breaks, if it brakes at the threads, put a washer under the nut, if its the head, then put a washer under that

I havent broken a screw in a while

But I have always wondered... What size balls, washers ETC with the thick screw?
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Old 02-24-2008, 09:36 PM   #11018
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Or you drill out the outdrives, and when the screw breaks, if it brakes at the threads, put a washer under the nut, if its the head, then put a washer under that

I havent broken a screw in a while

But I have always wondered... What size balls, washers ETC with the thick screw?
i know all he did was make the hole alittle bigger in the outdrives to fit the new TC5 screw in it thats all because the stock gold or black screw was breaking on us all the time
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Old 02-24-2008, 09:44 PM   #11019
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man how is that even possible? I've got about 25 runs on my diffs and not 1 broken screw. I use the titanium gold screw/t-nuts.
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Old 02-24-2008, 09:47 PM   #11020
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Originally Posted by B18C Turbo View Post
man how is that even possible? I've got about 25 runs on my diffs and not 1 broken screw. I use the titanium gold screw/t-nuts.
Felix broke one at the state race today i have broke two i should change that form all the time to two for me and i know felix has broke a couple too
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Old 02-24-2008, 09:49 PM   #11021
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i know all he did was make the hole alittle bigger in the outdrives to fit the new TC5 screw in it thats all because the stock gold or black screw was breaking on us all the time
What size thrust balls are in there?

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Originally Posted by B18C Turbo View Post
man how is that even possible? I've got about 25 runs on my diffs and not 1 broken screw. I use the titanium gold screw/t-nuts.
Breaking screws isnt hard... But once you get the diff good, its all good
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Old 02-24-2008, 09:51 PM   #11022
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What size thrust balls are in there?



Breaking screws isnt hard... But once you get the diff good, its all good
the stock
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Old 02-24-2008, 09:51 PM   #11023
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Im lost, how do you break it? Where does it break? why?
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Old 02-24-2008, 09:54 PM   #11024
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if i remember at the treads both times and today with Felix when a car hit us
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Old 02-24-2008, 09:57 PM   #11025
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the only thing I break on this car on steering knuckles, c-hubs, arms, and bent hinge pins. Once you switch to aluminum the car is AWSOME!
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