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Re: [ST] Higher RPM for racing?



(Torque) X (rpm) => HP

So your 6000 rpm motor has TWICE the torque of the 12000 rpm motor.
Somebody did a very bad job building the 12000 rpm engine.

A wide power band (flat curve) is always a good thing. But for the track you only need a power band as wide as the spacing between gears.

David W. Funk

-------------- Original message -------------- 
From: "Joel Ashman" <ashmite@xxxxxxxxx> 

> OK so I need a little education... When did it become preferable to have 
> higher RPM for racing? It seems to me (a non racer) that given 2 motors with 
> the same displacement, one with 12000 RPM and 150 HP (and a peaky curve) and 
> a 6000 RPM 150 HP (flat curve) that the lower one would be more usable on 
> the track. Hit a gear and hold it in a turn instead of shifting. I hated 
> the ride I had on a newer R6. I had to downshift 3 times to pass a car 
> downhill, while on my Sprint, I just nail the throttle and go. Also, it the 
> two above motors consumed the same amount of fuel per cycle, the 6000 RPM 
> would get better mileage and therefore pit less for refueling. 
> 
> Again, I'm just curious, and its really because I dislike the streetability 
> of the modern racing style bikes. I can never talk someone out of a 
> Hyabusa who just wants a bike to cruise around and to work and back. Gimme 
> a V-twin or Triple anyday. 
> 
> (Which leaves me to choose between the Monster 695 or the Speed Triple next 
> spring) 
> 
> --Joel 
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