just as a point of intrest?...whilst strapping several GenI busa's on Ken Wheelers dyno (including mine)...
as far as "Top Speed" goes?...while Grandpabusas GenI was the high RWHP winner with an undertail HMF Dual exhaust? (had me by like 1.5 rwhp)...his dyno'ed top speed was like 178 while mine was 192...gearing was the same..and as we scratched our heads over the fact that the same bike that had the top rwhp was also the slowest as far as "Top Speed" goes?...Ken Wheeler brought to our attention just how much influence...
"Different Tire Manufacturers Tire PROFILES"
can and does have on the "Top Speed" numbers...and it's huge...which also explains BOTH end results of...
1. that while grandpabusas BUSA was the slowest at top speed?
2. it was also producing some rapid torque and plenty of it.
why did his busa register great power values yet the slowest top speed?..simple...his rear tire diameter was somehow smaller...as we were not running the same tires..and possibly more worn than my brand new Pilots i had at the time..teaching me that even substancial tire wear can reflect signifigant performance deltas..but nothing the average rider would normally detect..or know about..unless strapped down and tested..or?..when running WFO with yer psycotic buds and trying to figure out why while your HP#'s are just wonderful?..and your AF ratios are spot on?...at top end you're running back of the pack..."tires"..when worn..or when you play with different sizes or altered profiles?...can be as signifigant as altering final drive teeth numbers on your sprockets...just a lil tidbit of personal experience for ya'lls minds ta munch on.
L8R, Bill.
as far as "Top Speed" goes?...while Grandpabusas GenI was the high RWHP winner with an undertail HMF Dual exhaust? (had me by like 1.5 rwhp)...his dyno'ed top speed was like 178 while mine was 192...gearing was the same..and as we scratched our heads over the fact that the same bike that had the top rwhp was also the slowest as far as "Top Speed" goes?...Ken Wheeler brought to our attention just how much influence...
"Different Tire Manufacturers Tire PROFILES"
can and does have on the "Top Speed" numbers...and it's huge...which also explains BOTH end results of...
1. that while grandpabusas BUSA was the slowest at top speed?
2. it was also producing some rapid torque and plenty of it.
why did his busa register great power values yet the slowest top speed?..simple...his rear tire diameter was somehow smaller...as we were not running the same tires..and possibly more worn than my brand new Pilots i had at the time..teaching me that even substancial tire wear can reflect signifigant performance deltas..but nothing the average rider would normally detect..or know about..unless strapped down and tested..or?..when running WFO with yer psycotic buds and trying to figure out why while your HP#'s are just wonderful?..and your AF ratios are spot on?...at top end you're running back of the pack..."tires"..when worn..or when you play with different sizes or altered profiles?...can be as signifigant as altering final drive teeth numbers on your sprockets...just a lil tidbit of personal experience for ya'lls minds ta munch on.
L8R, Bill.