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Old 09-13-2015, 09:30 AM   #15526
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Default B5 diff

I have a few b5 3 gear diffs. On one of them I can't get the diff screw tight enough so that the one tire spins one revolution or less. After it bottoms out and feels normal I spin one wheel and it spins much more then the other two cars. I pulled it out and put in a all new diff, new screw, spring and thrust and have same issue. It feels fine on the track but does not put me in my happy place when it is on the bench and I spin it and then spin the others. I cant spin one tire when holding spur and other tire so that tells me it is fine....is it just a free spinning car and let it be or should I look at anything else.
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Old 09-13-2015, 10:06 AM   #15527
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I have a few b5 3 gear diffs. On one of them I can't get the diff screw tight enough so that the one tire spins one revolution or less. After it bottoms out and feels normal I spin one wheel and it spins much more then the other two cars. I pulled it out and put in a all new diff, new screw, spring and thrust and have same issue. It feels fine on the track but does not put me in my happy place when it is on the bench and I spin it and then spin the others. I cant spin one tire when holding spur and other tire so that tells me it is fine....is it just a free spinning car and let it be or should I look at anything else.

All you can do is compare that all the new parts you just rebuilt the diff with are of the same exact size and length as the ones they replaced. No other parts replaced at the same time? Out drives or the washers that go on them are same parts or at least the same measurements? Did the diff get broken in all the way and the balls are not just sliding on the polished rings? Did you replace everything on the thrust bearing side and not leave something out?

About all I can think of..
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Old 09-13-2015, 10:08 AM   #15528
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Originally Posted by Dave H View Post
You had a Triple X in 1997? Intriguing.
He's not very good at math...or remembering anything...
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Old 09-13-2015, 03:26 PM   #15529
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Still having a lot of pushing, this thing is a plow.

off power steering is awful, had no mid to exit steering. only had time to mush front shocks a little and battery, it got a little better but not where I need it to be.

I threw down my Serpent and it's worlds of a difference.


Really need help guys.

Thinking the aluminum or brass front bulkhead is needed.
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Old 09-13-2015, 03:51 PM   #15530
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He's not very good at math...or remembering anything...
You take diffy q and tell me how you do....
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Old 09-13-2015, 04:59 PM   #15531
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I have a few b5 3 gear diffs. On one of them I can't get the diff screw tight enough so that the one tire spins one revolution or less. After it bottoms out and feels normal I spin one wheel and it spins much more then the other two cars. I pulled it out and put in a all new diff, new screw, spring and thrust and have same issue. It feels fine on the track but does not put me in my happy place when it is on the bench and I spin it and then spin the others. I cant spin one tire when holding spur and other tire so that tells me it is fine....is it just a free spinning car and let it be or should I look at anything else.
Did you compress the spring?
Verify all components are installed correctly.
Beyond that check the rest of the drive train focusing on all the bearings first, then your cvd.
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Old 09-13-2015, 05:09 PM   #15532
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Still having a lot of pushing, this thing is a plow.

off power steering is awful, had no mid to exit steering. only had time to mush front shocks a little and battery, it got a little better but not where I need it to be.

I threw down my Serpent and it's worlds of a difference.


Really need help guys.

Thinking the aluminum or brass front bulkhead is needed.
are you running a LP servo? before you guy brass, try some lead weight under the rack. did you try 3/2 in the rear? or 2.5/2. If your car is way off, you probably dont have the "right" tire combo.
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Old 09-13-2015, 05:10 PM   #15533
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Did you compress the spring?
Verify all components are installed correctly.
Beyond that check the rest of the drive train focusing on all the bearings first, then your cvd.
caged thrust? mip vs ae diff bolt?
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Old 09-13-2015, 05:11 PM   #15534
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Originally Posted by JEFFs SC10 View Post
Still having a lot of pushing, this thing is a plow.

off power steering is awful, had no mid to exit steering. only had time to mush front shocks a little and battery, it got a little better but not where I need it to be.

I threw down my Serpent and it's worlds of a difference.


Really need help guys.

Thinking the aluminum or brass front bulkhead is needed.
Throw what you have on a setup sheet and post it. Include all the details and the type of track you are running on. I just got spanked by a Serpent my last time out but I also ran door to door with the guy previously. I think pretty much any of the top brand cars are pretty much equally made for the average person. Its all in the building/tuning/driving.
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Old 09-13-2015, 06:52 PM   #15535
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My tires were right, the buggy is setup from the box with the plastic c and d blocks.

stock is 3 + 1 right?

I think I found the issue though, looks like the camber block was flipped over with +2 with the 3 mm shims on top of that which I believe would cause my pushing condition.

so I flipped it to -2 added the 3 mm shims and need to drive it again. I'm hoping this fixes the problem.

I bought this buggy from another dude who built it so my fault for not checking that.

I have to put the front shocks back where I had them and retest.

kinda makes sense now. this was really buggin me.
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Old 09-13-2015, 08:25 PM   #15536
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That is why you totally take it apart and do it yourself. You then know what you have to work with. There could be other things wronge as well.
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Old 09-13-2015, 09:41 PM   #15537
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4 gear? Seriously? Please, in all of your infinite reasoning, why would you downgrade?
4 gear isn't a downgrade, what the heck are you talking about? The 3 gear will torque the chassis towards the front tires on-throttle, and the 4 gear will torque the chassis towards the rear tires on-throttle. 4 gear is likely faster on a very loose track.

Listen, Socket... lay off with your attitude. Be here to help or go elsewhere.
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Old 09-13-2015, 11:24 PM   #15538
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caged thrust? mip vs ae diff bolt?
Caged thrust either avid or Schelle, I go back and forth. Mip diff screw, spring and nut.
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Old 09-14-2015, 03:23 AM   #15539
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Are the caged thrust worth it over the stock thrust setup? Im just asking opinions on it. Also I am going to be running on turf here and there is it better to run a ball diff or a gear diff and what fluid to start with. Running a B5m lite. Any other option parts I may need to run on turf compared to dirt?
Thanks
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Old 09-14-2015, 04:45 AM   #15540
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Are the caged thrust worth it over the stock thrust setup? Im just asking opinions on it. Also I am going to be running on turf here and there is it better to run a ball diff or a gear diff and what fluid to start with. Running a B5m lite. Any other option parts I may need to run on turf compared to dirt?
Thanks
For carpet run the gear diff, start with 5k oil.

For the rear get the stock B5m arms, if I remember the B5m Lite comes with the B5 rear arms which shortens the wheel base.

Also worth trying the +4mm rear end with narrow hexes.

MiCk B. :-)
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