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eda	26-02-2009 04:58 PM

B4 lifting inside wheel

I run a B4 indoor on astroturf, and find car lifts inside wheel a lot on any sort of half tight corner. Any general advice on how to fix this?
Am running yellow mini pins front & rear. Silver springs at rear, blue up front. Not 100% sure what current shock piston/oils etc set up is as bought 2nd hand and only raced once so far. Thanks.

sosidge

26-02-2009 05:05 PM

Inside front or rear? On power or off power? Where in the corner?

eda	26-02-2009 05:15 PM

Inside front, on power, turn in onwards.

Quote:

Originally Posted by sosidge (Post 212749)

Inside front or rear? On power or off power? Where in the corner?

sosidge

26-02-2009 06:26 PM

Well, I'm no expert on the B4, but lifting the inside front wheel isn't necessarily a problem in itself on a 2wd car, obviously there is no loss of drive, although if the car is starting to understeer or become unsettled on bumps as a result then it is going to be a problem.

Two main causes for lifting front wheels on power. First is lack of travel. Second is lack of roll/squat stiffness at the rear.

If you set up the front end for more downtravel (for example, removing shock limiters), then it is less likely to lift the inside wheel.

At the rear end, stiffer springs, a stiffer anti-roll bar, or stronger anti-squat geometry would all help.

Personally speaking, since you are running on high-grip, and since your springs are already medium/stiff in rate, I would be tempted to try a soft anti-roll bar on the rear.

eda	27-02-2009 09:31 AM

Thanks - this gives me something to work on. :thumbsup:

Quote:

Originally Posted by sosidge (Post 212779)

super__dan

27-02-2009 11:14 AM

You need to know what's in the shocks. High grip you might want to try something (from what I remember 40wt #2 piston front and 35wt #1 piston rear. I agree a roll bar on high grip can help. I used to run the soft quite often indoors and the medium one occasionally on very high grip.

Does it actually oversteer and or griproll? Personally on very high grip indoors I'd usually trim the inner and outer spikes off the front tyres and just outer row off rears to fell make it less edgy.

Obviously the best option though would be to convert it to an X6 ;)

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