Freestyle here we go

HP simply isn't a meaningful number for a jetski, and here's why: HP is calculated by multiplying RPM with the torque a motor produces at that RPM (times a constant factor).
What's that mean?
It means that the HP numbers you see advertised for any motor are always going to be near the redline of the motor, at high RPM. That's useless for a standup motor.
We use power at the low and mid RPM's, not in the 7000's.
The stock SJ motor might have 73HP at 6000RPM. Who rides there????
At usable RPMs it probably has 20-35HP.

The big & strung up motors? The claimed 101HP motor from the FPP graph in the last thread had about 50HP at 5000 RPM and even less down low.

A motor with a transmission attached to it can operate inside a fairly narrow RPM band to be near peak RPM. Direct drive jetski, not so much. Because of that, our power curves are much wider than they are for other motors. And that also gives up peak HP.


matt. get a tach. agree to post a pic of you in a dress if i'm right. i bet your setup you'll be in the 6-7k rpms more then you think. you use the impeller to put you where the power is. i'm not trying to single you out. you just happen to be posting stuff that needs to be singled out sir :kabong: the big motors are spinning decent rpms. i know i bounced my 9k limiter a few times. i've heard a xs1000 bounce it's 10-11k redline with it barely leaving the water a bunch...
 

Matt_E

steals hub caps from cars
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I know I dont' ride much below 4k.
I don't have a tach. :(

You're probably right.
 
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