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Wheels "jumping" at launch on drag strip

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  • Wheels "jumping" at launch on drag strip

    I've noticed my tires are "jumping" when I launch at the strip. Would this have to do with my struts going bad on me and not keeping the tires on the ground? It's noticeable only on the strip though. Perhaps it could be the sticky shit they lay down?
    Rob

  • #2
    what kind of a car do you drive?
    Originally posted by ECOtec Gods
    Consider this: 800 hp is a lot on a 2.0L motor. With 750hp, three-quarters of a thousand you're basically dealing with 6.14 hp per cubic inch. Pressures and stresses of all kinds thermal and mechanical loading across the board escalate to extreme levels. A Chevrolet 5.7-liter LS1 V8 with this much specific power (horsepower per cubic inch) would be making 2,137 hp

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    • #3
      2001 L200
      Rob

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      • #4
        I know for a fact it's killing my time.
        Rob

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        • #5
          wheelhop.
          07 Redline w/ stuff.<br /><br />89 Civic hatch w/o stuff.<br /><br />96 SL2 that dont need stuff.

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          • #6
            The sloppy springs / struts are adding to your wheel hop. The engine mounts do that too.

            If you want to eliminate your problem, find a stiffer engine mount, and stiffer suspension (or use spring rubbers / spacers)

            The sticky stuff does make the problem more pronounced though.
            LSJ powered 1998 Chevy S-10 turbo
            visit my Albums - http://sixthsphere.com/album.php?u=7267

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            • #7
              oh, I also had my tire pressure lowered. Perhaps I should launch at a lower RPM? I have been launching at 1500 RPM. I got H&R Sport springs installed.
              Rob

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              • #8
                seriously... did you just create a second account?

                oh and wheelhop > you.
                Sixthsphere.com Owner
                2016 Honda Fit
                2002 Saturn SC2 - RHD
                2002 GMC Sierra 2500HD Duramax

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                • #9
                  1500 should be fine to launch at. It seems a bit low to me actually. You have a 2000rpm stall in that car. (which means it will see 2000 rpm's before it actually wants to get moving) try that range for a while too.

                  H&R springs on stock struts = bouncy
                  stiffen some things up and you'll get rid of the wheel hop.
                  LSJ powered 1998 Chevy S-10 turbo
                  visit my Albums - http://sixthsphere.com/album.php?u=7267

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                  • #10
                    Originally posted by SC2Sick
                    seriously... did you just create a second account?
                    Uhhh, huh? I used to have an account a long time ago but i got BANNED for something I didn't do.


                    Originally posted by Green Monstah
                    H&R springs on stock struts = bouncy
                    stiffen some things up and you'll get rid of the wheel hop.
                    Ok, I've been looking around and the Monroe struts seem decent for the price

                    http://www2.alldiscountautoparts.com/pa ... howdc=true

                    what do you think? Or would the KYB be a better choice as in a long term effect?
                    Rob

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                    • #11
                      Originally posted by Robert
                      oh, I also had my tire pressure lowered. Perhaps I should launch at a lower RPM? I have been launching at 1500 RPM. I got H&R Sport springs installed.
                      Lowering your tire pressure on regular street tires is the wrong thing to do. The contact patch bows up when you do that decreasing the tire grip. Get a strut bar, better suspension and play with the launch rpm.
                      James E<br /><br />No i'm not new, Just been M.I.A for a while.

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                      • #12
                        I'll give it a try. The nest midnight meyhem is the 31st of March so I got some time to build things up.
                        Rob

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                        • #13
                          Originally posted by Opusguy
                          Originally posted by Robert
                          oh, I also had my tire pressure lowered. Perhaps I should launch at a lower RPM? I have been launching at 1500 RPM. I got H&R Sport springs installed.
                          Lowering your tire pressure on regular street tires is the wrong thing to do. The contact patch bows up when you do that decreasing the tire grip. Get a strut bar, better suspension and play with the launch rpm.
                          good point James, letting out too much pressure and they will cup big time

                          just a few psi will help some, but far too many people goo to much
                          -Vinny

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                          • #14
                            Originally posted by Robert
                            I'll give it a try. The nest midnight meyhem is the 31st of March so I got some time to build things up.
                            I'll see ya out there. Haven't been to the track in way to long. It'll be nice to get out there again. What kind of times were you pulling last time?
                            James E<br /><br />No i'm not new, Just been M.I.A for a while.

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                            • #15
                              17.1 through 17.4 As soon I get the throttle body done up it'll be going down. I usually hang out with a group of Subaru's and if Mike brings out his Vette it'll be a blast.
                              Rob

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