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Old 17-11-2011
xray011 xray011 is offline
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Default b4 spinning round mid corner

I've ran my b4 with no real problems,that is till i rebiult the diff.
i re done it 4 times now and still have to run it tight to stop the screaming.The last time i did notice that the diff spring is flat(no bounce).
can this cause the screaming?
Also when i turn left the buggy spins on its self but runs wide when i turn right.The left to right turning circle is the same at slow speeds.
So what i am asking is.
will the spring make it sceam?
will the tight diff make the left to right turning different?
or is there some other reason that im missing?
setup is pretty standard
front blue 35w
rear silver 30w
Please help
Alan
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Old 17-11-2011
kayce kayce is offline
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If you killed/flattened the spring it obviously needs replacing.
"rebuilding the diff" requires a little more than just relubing it (dead parts need replacing).
I'd also suggest backing off on the slipper, as running it locked puts more strain on the diff.
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Old 17-11-2011
carpenterdean carpenterdean is offline
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alan, i would try a new spring first and go from there.
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  #4  
Old 17-11-2011
xray011 xray011 is offline
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I allready changed the plates and both sets of bearing for ceramics.I just ordered a new rebiuld kit with spring,so i will redo it.
Could the diff effect the steering left to right if it's run to tight?
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Old 17-11-2011
adey's Avatar
adey adey is offline
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in theory a tighter diff would make the car harder to turn and may cause lack of rear grip in the turn as i understand it. Again, thats how i understand it and i am open to correction.
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Old 17-11-2011
kayce kayce is offline
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Quote:
Originally Posted by xray011 View Post
I allready changed the plates and both sets of bearing for ceramics.I just ordered a new rebiuld kit with spring,so i will redo it.
Could the diff effect the steering left to right if it's run to tight?
You can use ceramics for the diff balls, but not in the thrust bearings - THAT's your screaming (well, that and your crushed spring).
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Old 18-11-2011
xray011 xray011 is offline
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Quote:
Originally Posted by kayce View Post
You can use ceramics for the diff balls, but not in the thrust bearings - THAT's your screaming (well, that and your crushed spring).
Ok well the rebiuld kit has thrust bearings so im just gona replace every thing.
cheers Alan
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  #8  
Old 26-11-2011
xray011 xray011 is offline
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I have replaced all parts in the diff and its still spinning out on right hand corners.
i also changed the servo just incase.
i did notice that on the bench if i turn left the movement is smooth but when i turn it right it is smooth but flicks the last 10mm of the movement.
i reversed the servo on my transmitter and i still does it on the same side,so its not transmiter setup.
All the turn buckles are the same and the turning circle equal at slow testing.
Could it be the servo arm.(to short or long)?
Im fedup with this now
please help
Alan
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