In Uk motorsports for Sprite/Midget racing there are no regulations I know of 
that limit how much negative camber can be used.  In any event for a live 
axle car I'm not certain that there is a requirement for negative camber since 
you need to have a very stiff rear suspension such that the outer rear wheel 
lifts in the corner before you need negative camber.  In fact I wonder whether 
in 
fact it might be better to have a softer rear suspension such the outer rear 
wheel doesn't lift but the rear body (not the front) rolls.
Open to debate from all you racing types.
Regards
Daniel1312
In a message dated 29/05/07 21:40:35 GMT Daylight Time, derf247@gmail.com 
writes:
> >  I'd be interested in the life of the axle (half) shafts and diff pinion
> > gears for the method you describe of achieving negative camber on a live
> > axle.
> 
> 
> Well, you know how tiny the MOWOG tolerances were for axle assemblies.
> I'm sure 1 degree per side would have little or no effect on life
> expectancy.  Put an axle shaft in a rear assembly without the hub
> installed and see how much play the differential will allow the axle
> shaft.
> 
> If someone at the track notices you can just say how you didn't even
> notice that your rear end was bent like that.  Just don't go
> overboard.  If your rear end looks like this /---o---\ then someone
> might say something.
 
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