Wheel Hop - How to cure it?
10-24-2003, 11:25 PM
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Wheel Hop - How to cure it? ok just put a spec stage 3 clutch in. i have mad wheel hop. i have a bmr TA, LCA, & moser 12 bolt. i set the pinion angle at about -2. what is the secret to no wheel hop? any ideas?????
10-25-2003, 02:42 PM
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Instant center geometry is where it's at.
Not pinion angle (that's just for U-joint and
pinion bearing longevity) but the point
where the torque arm and lower control
arm angles (or their projected vectors)
intersect. There's an ideal and too much
one way makes acceleration wheel hop,
too much the other makes brake hop (but
great launches). You want the place where
the imaginary lines intersect to be higher
than the axle centerline so the torque
reaction pushes the axle down & the body
up, not the other way around.
The only thing I see missing from the sig
that might help, is lower control arm
relocation brackets. With the 12-bolt I
don't know if you can find those or not.
But the two things you have to work with
are lower control arm angle and the
torque arm length & pickup point. Making
the axle LCA mount point lower helps. I
think making the torque arm fore end
higher will also (look at some of those
drag-oriented torque arms with the mount
that doesn't use the trans tail).
Not pinion angle (that's just for U-joint and
pinion bearing longevity) but the point
where the torque arm and lower control
arm angles (or their projected vectors)
intersect. There's an ideal and too much
one way makes acceleration wheel hop,
too much the other makes brake hop (but
great launches). You want the place where
the imaginary lines intersect to be higher
than the axle centerline so the torque
reaction pushes the axle down & the body
up, not the other way around.
The only thing I see missing from the sig
that might help, is lower control arm
relocation brackets. With the 12-bolt I
don't know if you can find those or not.
But the two things you have to work with
are lower control arm angle and the
torque arm length & pickup point. Making
the axle LCA mount point lower helps. I
think making the torque arm fore end
higher will also (look at some of those
drag-oriented torque arms with the mount
that doesn't use the trans tail).