Thread: RPM vs MPH
01-07-2009, 07:06 PM #1
RPM vs MPH
I have read mention of the correlation between RPM & MPH and was trying to find a thread but couldn't.
Specifically, on an RXP-X if I go to up 100 rpm from the stock rev limiter setting what generally is the mph increase?
01-07-2009, 07:26 PM #2
Generally, 100 rpm is about 1 mph give or take.
01-08-2009, 05:26 AM #3
RPM vs MPH
I thought it was something like that. Thanks.
01-08-2009, 04:19 PM #4
Ussualy if I gain 100 rpms on top because of increased power for whatever reason I will gain more than 1mph with my prop/nozzle set-up. If you gain 100rpms by de-pitching or nozzle change you will probably gain a little less. If you bump your rev limit up 100 rpms you will probably need to de-pitch to turn that rpm.
BTW I just noticed that my ski is almost exactly 100 rpms per mph over-all. 81.4mph @8150rpm
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