AWD launch bounce - hop
#1
AWD launch bounce - hop
My Whipple supercharged Yukon does this and it is annoying, not to mention hard on the drivetrain if any tires break loose. I'm not really breaking loose tires other than maybe just briefly on one front, so I wouldn't call it a wheel hop, plus it also does it at a rolling punch where I am sure they're not spinning. It looks like other trucks do it as well, even the 418 2.9L badass in one of the links below. I am starting to think it may be the active suspension overreacting a bit too much/too late, causing this oscillating. It is really obvious on the last link at 0:30, as shot from the Trackhawk's POV. Any ideas? I wonder how standard shocks would work as a comparison. Not looking for a drag truck, just a fun daily driver that doesn't launch like a freakin' see-saw.
https://www.youtube.com/watch?v=cJzv6uxFK_c
https://www.motor1.com/news/235903/e...hawk-showdown/
https://www.youtube.com/watch?v=cJzv6uxFK_c
https://www.motor1.com/news/235903/e...hawk-showdown/
#4
TECH Junkie
Major annoying. Maybe a double adjustable coil over setup could cure it. Not sure if Atomic has anything for that but probably could point you in the right direction if not.
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ZO6Ted (02-27-2019)
#6
TECH Junkie
Wonder if that was what was happening in my 07? Input please? Could hardly stay on the track or in my lane it was so violent but I didn't have straps. Lowered bars all the way in front for the track.
#7
if you had torsion bars it would have been pre-07? and i think you would have had different transfer case than the borg warner - not to say you didn't experience the same thing, but i would bet on it just weight transferring, loading up the rear axle, unloading, repeatedly
the nnbs yukons are the same as the trucks with a coil spring over strut, atomics coil over mounts work but i dont think that would completely solve it.
I will see if my yukon does this after some more power but dont experience any bouncing atm. But, it does have double adjustable front coilovers, single adjustables in the rear, belltech lowering spring in the back, spohn adjustable 5-link bars (4+panhard), eibach front, rear sway bars
the nnbs yukons are the same as the trucks with a coil spring over strut, atomics coil over mounts work but i dont think that would completely solve it.
I will see if my yukon does this after some more power but dont experience any bouncing atm. But, it does have double adjustable front coilovers, single adjustables in the rear, belltech lowering spring in the back, spohn adjustable 5-link bars (4+panhard), eibach front, rear sway bars
Last edited by randeez; 02-27-2019 at 06:57 PM.
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ZO6Ted (02-28-2019)
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#9
TECH Junkie
It was the 07 classic. I thought it was toe in that was causing the unloading because the front end would rise hard on launch and the steering wheel would jerk violently from left to right as the front tires hooked and unhooked. Got rid of the truck before I sorted it out.
#10
Custm2500's Rude Friend
iTrader: (17)
What about strapping the front to minimize the weight transfer and unloading the front end???
https://www.performancetrucks.net/fo...l-spin-414845/
https://www.performancetrucks.net/fo...l-spin-414845/