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JasonBourne.Qc

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Posts posted by JasonBourne.Qc

  1. 18" and 19" slicks are what we run on the 1/8. Longer than that, American Racer is better.

    You could also play with your gearing. We run 18-19 front sprocket and small rear (36-37-38). If your motor can pull a 19 front, play with the rear one because it's faster to change it.

    Bigger front sprocket does put less stress on the output shaft, so it's a win/win.

    • Like 1
  2. I've made an "on-the-go" adjustable rear link. It's still a prototype but i'll make another one with solid bar stock machined with cnc to avoid welding...

     

    Threaded rod is 3/4" and bar stock's 1"*1" MIG welded.

     

    I tested it on my dirt drag, asphalt drag and trail banshees and it's bullet proof.

     

    No need to change your shock length anymore and no need to switch the hole positionning on your drop bar.861016b4d78dd26b628ed139e927ac3a.jpg

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  3. I want to trade my 421 Wampus Serval with clean up port for a 421 Cheetah Cub.

     

    Nikasil is in good shape.

    185 psi with 19cc domes.

     

    Was in my asphalt drag banshee...it has tons of torque but not that much hi-revv for drag racing. Motor was running on C12.3483ce7a7cb8c580241ff29201d6e365.jpg55d650e942e6877841d5d815945b206a.jpge0c76928d2917248018a58fc50eb1d04.jpg

  4. I just did a 6.55 and a 6.36@97mph passes with my 421 cub running on c12...

    Gearing was 18-38 with 19" m/t slick.

    I will try 18-36 next time.

    Alky carbs are not far away...i'll try to reach the maximum on race gas then switch to methanol in few weeks.

    Time and speed are pretty accurate since it's gps calculated with the g-force at launch and will stop at 660'. The third pic shown is split by 10 so 1.28s for 66'...thats not bad for a stock frame without wheelie bar :D5db33f09feb5110ff6e4bb2dbee77980.jpgfa935b8bf029bda0bcabd9a3dc768a86.jpgc4b6969f9e468e613105d3400cba4009.jpge4b283f3d32e9be894ac3428f9ab2ca9.jpga59df7a6d4e863326b7d2c54bc4bf545.jpg

  5. I'm running a 18/39 with 19" M/T slick on my 421 cub as cast setup for race gas (C12). I did a 6.73s pass @ 104mph this summer on stock unmodified frame and the track didn't stick well.

     

    Swingarm length, suspension, wheelie bar or not, clutch tuning...every factor is important. Like Zilla said, buy a couple sprockets and make your own test. Every bike is different...
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