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wheelhop SUCKS

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Old 10-15-2008 | 02:31 PM
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xtremetreadwear's Avatar
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wheelhop SUCKS

Kind of a newb when it comes to tuning so bare with me

I've been doing some research and thinking of gettin a Racing Beat suspension package. obviously this will improve handling but one thing I really want to take care of is wheelhop. I was showing off my ride to a friend and was attempting to just do a burn out. I revved to only 6.5k, let the clutch go and i swear the axle was seconds from falling off. I don't ever want that to happen again. I know the RPMs were low, but w/e, i wanna be able to burn the tires, or accelerate fast. One or the other

This package includes a set of springs front and rear and sways front and rear. Will this package eliminate wheelhop? Or atleast reduce it considerably? Any help is appreciated
Old 10-15-2008 | 03:00 PM
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During wheel hop, your suspension is bouncing up and down. Stiffer springs will reduce the amount the suspension will compress -reducing wheel-hop, stiffer damping (stiffer shocks) will slow down/control the oscillations of the suspension -reducing wheel hop.

Stiffer diff bushings and or subframe bushings can also reduce wheel hop.

The biggest cause is soft springs and lack of damping from your shocks.

0.02
Old 10-15-2008 | 03:01 PM
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since when is 6.5K rpm's low? I can launch from 4K and get the tires spinning like crazy.. I have the Racing Beat sway bars and I love them. Yes they will eliminate wheel hop. As for the springs...yeah they'll help too.
Old 10-15-2008 | 03:13 PM
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Originally Posted by topgear8
since when is 6.5K rpm's low? I can launch from 4K and get the tires spinning like crazy.. I have the Racing Beat sway bars and I love them. Yes they will eliminate wheel hop. As for the springs...yeah they'll help too.
You need better tires

swaybars are springs. They are only acted upon when their is a difference between ride heights between right and left (when cornering). So swaybars will not affect or reduce wheel hop.

Tires with less grip will spin easier and won't generate the grip to create wheelhop. Tires with more grip load the suspension more causing these oscillations as the spring is becoming compressed and expands and is not controlled by the damper.
Old 10-15-2008 | 03:55 PM
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Originally Posted by stuntman
swaybars are springs. They are only acted upon when their is a difference between ride heights between right and left (when cornering). So swaybars will not affect or reduce wheel hop.
You're making the assumption that both wheels are hopping, and are doing so at the same time/rate. On a car with an independent rear suspension that is a bad assumption.
Old 10-15-2008 | 04:01 PM
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Originally Posted by rotary.enthusiast
You're making the assumption that both wheels are hopping, and are doing so at the same time/rate. On a car with an independent rear suspension that is a bad assumption.
If one wheel is hopping, then yes a swaybar will transfer the weight to the opposing side and 'can' reduce wheel hop. In most cases (even for independant rear suspension - BMW M3, Miata, RX8, 350Z, MR2 Turbo) usually both wheels hop simulataneously from what I have seen/driven, and most were solved through spring/shock rather than swaybar.
Old 10-15-2008 | 04:58 PM
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Good replies. Sounds like this package will give me what I'm looking for. I didn't think sways would really help with wheelhop to much...doesn't make sense to me since they reduce roll...which is lateral, not vertical. But i have seen many people say get the sways first and you'll never be disappointed.



Originally Posted by stuntman
You need better tires

Tires with less grip will spin easier and won't generate the grip to create wheelhop. Tires with more grip load the suspension more causing these oscillations as the spring is becoming compressed and expands and is not controlled by the damper.

Doesn't that kind of contradict itself?
Old 10-15-2008 | 05:04 PM
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Also I want to do the springs and shocks at the same time since the labor is in the same area. Kinda thinkin I should just get the RB sways, and then get the shocks & springs together. Can anyone recommend a good set that's at a reasonable price? Or are the RB springs a good way to go and I can get another brand of shocks?
Old 10-15-2008 | 05:05 PM
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Originally Posted by xtremetreadwear
Doesn't that kind of contradict itself?
How? It explained that if he had low-grip tires, it would be easier to spin the tires at a lower RPM and not have a wheel hopping problem. It also explained that with higher grip tires, wheelhop is more prevalent since the tires also have more grip when spinning, loading the suspension and creating wheel hop moe than a tire that instantly breaks traction, spins, dosn't make the car accelerate, and dosn't load the suspension.

RB has good products. Konis are one of the best options in terms of just shocks. I might consider investing in a good set of coilovers instead (like KW or JIC).
Old 10-15-2008 | 05:44 PM
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Originally Posted by stuntman
How? It explained that if he had low-grip tires, it would be easier to spin the tires at a lower RPM and not have a wheel hopping problem.
I see what you mean, but low-grip tires would reduce handling. I don't want to sacrifice that just because of some wheelhop. I like your other suggestion better and will look into that instead
Old 10-15-2008 | 06:31 PM
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Koni Yellow's or Tokico D-sport or D-spec, I can't recall.
Old 04-14-2009 | 09:30 PM
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OK. I not really seeing this. I have wheel hop bad. I had it with my stock tires, my winter tires and my Summer super sticky RT-615 275/35 tires. I lowered the the car with Tein coilovers. Still have wheel hop. It should be noted that it only happens when the car is the driving straight. any slight turn and no wheel hop.

BTW the car rides stiff and doesn't lean much at all. Still have stock sway bars.

I think wheel hop is a fundamental problem to the RX8. Has anyone really fixed it on their car?
Old 04-14-2009 | 09:50 PM
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Finally found and article that makes sense. I included a link below.

http://www.mc2racing.com/tech/20061012a/index.html

My favorite part is the following...

"As mentioned earlier, a lot of people throw the wrong parts at the car in an effort to eliminate wheel hop. First, springs and sway bars will generally not do anything to promote or prevent wheel hop. Additionally, suspension settings, such as camber and toe, will generally not help the issue. It is the change in toe that leads to wheel hop, not the static setting. Tires do not cause wheel hop, though they do determine the grip level at which wheel hop occurs."
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