RE: Wheel hop
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RE: Wheel hop - 6/25/2008 10:37:30 PM
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Camaro 69
Posts: 985
Joined: 10/17/2007
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To put what causes wheel hop in simpler terms, think about the old-school stock rear leaf spring suspensions, as what’s in my ‘69. The natural tendency during acceleration is for the pinion in the rearend to want to rise upward. This causes the axle housing to rotate and put an upward load (wrap-up) on the front half of the leaf springs (forward of the axle). As the tires break free from the pavement, the springs rebound and they momentarily snap the tires in the opposite direction of travel. That’s what causes the rhythmic screech-screech-screech type of wheel-hop burnout. So to clarify, wheel hop is not caused by vertical or horizontal movement, it’s caused by the suspension re-coiling and snapping the axle back. The remedy for this is the addition of traction bars, ladder bars, or links to minimize or stop spring wrap-up completely. Now, apply the same concept to the more modern Camaro suspension. The way these are designed to prevent the pinion from rising is by use of the torque arm, which connects the pinion area of the rearend to the rear section of the trans. So when you accelerate, the torque from the rearend is trying like hell to lift the torque arm at the trans mounting. Any weakness, slop, or wear in the front mount or bushings, and the axle will be allowed twist up and give the same results as I described above. That’s why using poly mounts on both the trans to crossmember mount, as well as on the torque arm mount will help to alleviate that problem. Or, if you want to go overkill, you can install a remote mount torque arm bracket that takes the mount and the load off the trans, and puts it to the frame of the car.
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Eats Rice and Poops Out Fords
393 Stroker, Tunnel Ram/Dual Quads, and a well used rear-view mirror
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RE: Wheel hop - 6/26/2008 11:05:59 PM
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383 79
Posts: 108
Joined: 4/24/2008
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uhhh, Slapper bars :) Yay for leaf springs. As far as I know, the rear end actually twists back and forth because the leaf springs and everything kind of bunch up. It seems to happen on the verge of spinning, and hooking. Thats just how I see it. Feel free to tear it apart and fix it for me.
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'79 Berlinetta
383 Stroker Small Block
450+ hp
400+Tq
10 bolt chev 8.5" with 4.56 gears
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RE: Wheel hop - 6/27/2008 6:55:00 AM
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Camaro 69
Posts: 985
Joined: 10/17/2007
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quote:
ORIGINAL: 383 79
As far as I know, the rear end actually twists back and forth because the leaf springs and everything kind of bunch up. It seems to happen on the verge of spinning, and hooking...
That''s what I was describing, but in more technical terms.
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Eats Rice and Poops Out Fords
393 Stroker, Tunnel Ram/Dual Quads, and a well used rear-view mirror
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RE: Wheel hop - 6/27/2008 8:59:42 AM
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SpecterGT260
Posts: 3735
Joined: 6/5/2007
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i gotta ask u to clarify to see where we are getting off. there IS movement in hop. I guess in the discussions we acted like the thing is actually bouncing off the ground. Its the vibration of the suspension applying higher and lower force to the wheels. this is an up and down motion, even if there is no actual measurable movement of components. what would be measured is the "weight" on the tire.
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Guess who's awake...
quote:
ORIGINAL: BigNic
if she offers to shift for you its on.....
http://www.camaroforums.com/m_109346/mpage_1/key_/tm.htm#
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RE: Wheel hop - 6/27/2008 9:51:33 AM
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Camaro 69
Posts: 985
Joined: 10/17/2007
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Any resulting up and down movement you may get is the symptom, not the cause.
Simply put, cut your finger and it bleeds.
The bleeding isn''t the problem, the cut is.
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Eats Rice and Poops Out Fords
393 Stroker, Tunnel Ram/Dual Quads, and a well used rear-view mirror
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