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Messages - motulken

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16
Super 9 / Re: need help with tuning
« on: August 31, 2011, 12:55:42 PM »
thanks for the reply. I believe they are still the stock spring both clutch and contra spring (big spring).
I have the follwing sets of rollers and have tries several combinations 6gm, 5gm, 3.5gm. I have the stock 8.5 but did not put them back as it seem the the heavyier I went, the worse the take off got. Even with the lighter springs take off never got much better, but the RPMs were reving to 12K and the top end went down from 40 to 30ish and it was screaming. With the stock pipe and rollers, it took off good and topped out at 45-50 (at least on the speedo ) and the RPM's stayed about 10-11K. My buddy and I though the stock pipe was stopped up, it felt like it weight 40 pound. That's why I change the exhaust to the leo Vince tt. The scooter has about 9000 miles on it  What do think I should do?

17
Super 9 / need help with tuning
« on: August 31, 2011, 02:49:14 AM »
Hi,
  I'm building a scooter for my nephew. It's a 2004 super 9 lc deristricted. Just did rings and piston to freshen up the motor. It ran good with stock pipe and stock 8.5 gm rollers. Of course I want more so I added a Leo Vince tt pipe and lighter ( came with the pipe ) rollers 6 gm.  It pulls good at high rpms and climbs hills good but I have lost all bottom end. When you crack the throttle it revs to 4000 RPMS but will not pull ( move ) at all, after a few seconds of lag time it comes on and runs strong.I have played with lighter rollers but all that happened was I lost top end speed and the motor rev like crazy. At this point it cannot pull out of it's own way and is about dangerous in traffic. Any suggestions? Do I need to change torque or clutch springs?  I hate to just replace parts trying to figure it out. Any body have the same experience?

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