Joejr915 Posted June 2, 2014 Report Share Posted June 2, 2014 My motor is a 521 supercub. The first race I had a pvl on with no lockup timing at 80-85 thousands and I had 15-37 on for gearing I was running out of gearing before the finished. This race I was told to put my stock ignition back on and run 3stock and 3hd springs with all the balls in the lockup ( it the gigot sytle)my timing was 7-8 ish and 15-37 and now it wont even rev out the hole way in 5th. Need some advice Could I have to much weight and holding the motor from revving or does the stock ignition have a rev limiter in it? Idk any advice will b helpful. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted June 3, 2014 Report Share Posted June 3, 2014 (edited) That's a lot of weight for the slingshot. Also, what tire? I would try setting the clutch up back the way you had it with the PVL. Use the stock stuff on a plate and mess with taking a little timing out. Edited June 3, 2014 by trickedcarbine Quote Link to comment Share on other sites More sharing options...
Joejr915 Posted June 3, 2014 Author Report Share Posted June 3, 2014 E22x11x8 hi-run (knobby tire) roughly 69rollout and its on an adjustable plate Quote Link to comment Share on other sites More sharing options...
Joejr915 Posted June 3, 2014 Author Report Share Posted June 3, 2014 I was running consistently 6.1s @95-97mph anther guy I run has the same motor with stock ignition and slingshot (but idk what they are set at ) and same tire and his gearing is 16-38 amd another 465cub run pvl and no lockup both and same gearing as above will run 5.8-6.0 @ 110-104 mph Quote Link to comment Share on other sites More sharing options...
Joejr915 Posted June 3, 2014 Author Report Share Posted June 3, 2014 If I can get it to rev more I know I can run that gearing Quote Link to comment Share on other sites More sharing options...
camatv Posted June 4, 2014 Report Share Posted June 4, 2014 the pvl is lighter, probably made it rpm more.. put on a 16 tooth and increase the HP output of the motor. ALSO the stock ignition will add more timing on top potentially slowing the motors rpm capacity down. 1 Quote Link to comment Share on other sites More sharing options...
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