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Dr. Curve Dr. Curve is offline
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Join Date: Jun 2001
Location: Tallahassee, Florida, USA
Posts: 3,604
Thanks for the post Bill. While it true that the products you tested were all well made, fit well, and lighter..........the bottom line is that a sustained increase in power to the Rear Wheel........was not a result your testing found. Indeed the max you printed in the MCN is less than a 1.3 % gain.
As stated in the article you, and many others, had been taken (very taken) by the wild claims so many had made concerning the mods touted on this forum, and I am glad your efforts at MCN showed these "touts" for what they were and are...........overly exaggerated. "Mythbusters" was a wonderful to subtitle the section on the Dyno runs and what a experienced person you were able to secure to conduct the test.
When you say above, that displacement "must be increased" to improve RWHP, this statement is essentially wrong...........because as you know, a piston switch to Higher Compression while leaving all other things stock.......will add more useable RWHP than all the "bolt-on" mods did. Even a simple change of cams in a otherwise stock bike will add more than the tested mods did.
While the torque range is flatter in one small area, and the throttles suck with more ease, and the bike is lighter..........a sustained increase in power to the RW (other than about 1.3% is not much for the money spent, as you pointed out.
Another thing the article pointed out (and not discussed much here) was that many of the combo touted on this forum actually DECREASE THE RWHP
Old 05-20-2004, 05:32 AM
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