Hopping in one corner only, brand new chassis

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    • November 24, 2015 at 12:59 pm #57221
      Andrew Byrne
      Participant

      I have a brand new 30mm Italkart (tag senior), no time yet to test. I am experiencing a pretty bad hop though one corner only, it’s a fast slightly banked 180° hairpin. Rest of the track it is handling very well. Nutural setting on the front w/ KF hand front brakes. rear track @ 55″ medium hubs @ meduim axle, rear bar is out. My question is wether I should approach this corner first with a setup change, or change my driving. If driving, any advice approaching a high grip & fast 180° would really help. Thanks in advance

    • November 24, 2015 at 3:53 pm #57223
      Dan Engberson
      Participant

      I’d go to short hubs. You could also take out a seat strut (if you’re running two on each corner), but you could get to a setup where it’s nice and smooth, but slower. A little bit of hop can be good.

    • November 24, 2015 at 3:53 pm #57224
      Dan Engberson
      Participant

      Oh, and make sure your rear bumper is loose.

    • November 25, 2015 at 7:17 am #57235
      TJ Koyen
      Moderator

      If it’s one corner, it’s probably driving-related.

      To eliminate hopping, slow your hands down. Do what we constantly refer to as “driving under the rubber”. By that I mean, aim for the same apex you are now, but turn in sooner and more slowly. This will load the kart more progressively and eliminate harsh reactions from the chassis.

      Driver/Coach/Wrench : Innovative Performance/Exprit
      Owner : Oktane Visual - www.oktanevisual.com
      www.facebook.com/oktanevisual
      www.instagram.com/oktanevisual

      • November 25, 2015 at 10:43 am #57242
        Andrew Byrne
        Participant

        Thanks, ive also been told in the past that giving extra throttle mid corner can settle down a hop, how would this help?

    • November 29, 2015 at 4:17 pm #57353
      TJ Koyen
      Moderator

      Hopping is from the inside rear bouncing up and down in the corner when you exceed the grip limit of the outside tire and start to get slip.

      Applying throttle can help plant the outside wheel harder and keep the inside rear up or it can induce a bit of powerslide, smoothing out the hopping. Hitting the brakes usually sets the inside rear down and bogs the kart off the corner.

      Driving a kart through a corner relies on you putting in the correct amount of steering, throttle, and braking inputs to keep the inside off the ground smoothly. Smooth inputs = smooth kart reaction.

      Driver/Coach/Wrench : Innovative Performance/Exprit
      Owner : Oktane Visual - www.oktanevisual.com
      www.facebook.com/oktanevisual
      www.instagram.com/oktanevisual

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