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Thread: Race Buell Improvement Thread

  1. #121
    Senior Member Kurlon's Avatar
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    And the answer is: I need to find new excuses, 'cause the bike isn't one.

    90.3 to 93.8hp at the wheel depending on the pull and gear. The torque curve has a slight dip from 4.5k to 5.3k RPM, down about 5 to 7ft/lbs in that region, otherwise is basically a table top after 3.5k. HP is just one nice linear climb up to the limiter.

  2. #122
    Senior Member Cooter's Avatar
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    Thats actually pretty impressive and now you know where to apply your efforts to be faster

    Do you have a good lap timer/tracker? Something like Speed Addict that will track the entire lap, compare laps, and calculate coasting times etc? That app on a burner phone with a race box mini is a very accurate and powerful tool.

  3. #123
    Senior Member Kurlon's Avatar
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    I don't, never got one 'cause I'm too much of a damn gauge watcher. Will put that on the "todo" list. I've been helping a friend start to interpret data from a SOLO 2 setup, crazy amount of detail those can provide. If I'm going to have to learn the software anyways... maybe I should get one?

  4. #124
    Senior Member 34nineteen's Avatar
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    Quote Originally Posted by Cooter View Post
    Thats actually pretty impressive and now you know where to apply your efforts to be faster

    Do you have a good lap timer/tracker? Something like Speed Addict that will track the entire lap, compare laps, and calculate coasting times etc? That app on a burner phone with a race box mini is a very accurate and powerful tool.
    Speed Addict or Track Addict?

  5. #125
    Senior Member Kurlon's Avatar
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    ...can't get my head out of my ass to go faster damnit...

  6. #126
    Senior Member Kurlon's Avatar
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    Failed to qualify, dropped a second per lap but didn't make the cut.

  7. #127
    Senior Member Kurlon's Avatar
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    Anyone know the stock spring rates in a 2008 XB12XT? Feels like I possibly need to bump the rear one notch... also curious if either end is progressive wound instead of straight rate?

  8. #128
    Senior Member Barrett's Avatar
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    Quote Originally Posted by Kurlon View Post
    Anyone know the stock spring rates in a 2008 XB12XT? Feels like I possibly need to bump the rear one notch... also curious if either end is progressive wound instead of straight rate?

    Ulysses build date 7/05 thru 8/06 front fork springs straight wound
    Ulysses build date late 8/06 thru end of production front fork springs progressively wound

    Factory never published any suspension spring rates I'm aware of.

  9. #129
    Senior Member Kurlon's Avatar
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    Good to know, so I've got progressive front springs, wonder if the shock is progressive wound as well? I'm using about 3in of the 4.9in front travel available, and that's without really using the front brake properly. Really debating now about swapping to an R6 16mm radial master... Racetech's DB says the front springs are .68 kg/mm but doesn't note they're progressive, and is suggesting .65 straight rate for me, ehhh... Loudon prefers stiffer in general. No data on the rear end. Looking at pics of the shock online, boy that looks like a progressive wound spring in back too.

    Looking at tire wear, I need to lower the front end or stiffen the rear as I'm rear biased a bit. Not seeing any signs of blatantly bad damping but my pace may not be high enough for that to show itself yet. No tearing, so pressures are in the ballpark. I do get a little 'pumping' action in the rear out of T12 onto the front straight, side of the tire rolling it on, not sure if that should be tackled with more compression or rebound damping? Traction is a little variable through there as well, crossing some paint stripes so that's not helping.

    I'll be curious to see what the engine and primary oil look like after four events and just over 300 track miles. This last round at Loudon was the first time the bike seemed like it was HOT, temps were mid 70s but the humidity was 80%+ all freaking weekend, and the bike saw shorter cool down intervals between sessions. Loudon is also a lower speed track compared to well, anywhere so lots more time at full grunt at lower MPH so less overall airflow. Might be time to pack a fan to help her relax while on stands?

  10. #130
    Senior Member outthere's Avatar
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    Fronts so stiff you are leaving 1.5" on the table. Seems wrong.



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