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Thread: Rxpx real horsepower
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06-24-2015, 08:44 PM #1
Rxpx real horsepower
Has anyone seen or done a dyno on a rxpx 255? Im curious as to what the real horsepower is compared to what the ski is rated.
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06-24-2015, 09:59 PM #2
with the limiters removed and a few mods, using stock SC it should be over 260
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06-25-2015, 05:32 AM #3
Stock RXP-X 260 is about 230 in the "real world" out there...
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06-25-2015, 05:47 AM #4
Is 230 taken when the motor is at 60% throttle, and 67 MPH and 8050 RPM? Or at 100% throttle at 63 MPH and 8150 RPM? That is the 2 modes of the stock ski.
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06-25-2015, 06:31 AM #5
it's 255 where ever they did their controlled runs of multiple engines, whatever season (probably winter) it was tested in whatever environment(probably a dry room with close to no humidity).
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06-25-2015, 06:56 AM #6
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Whittlebeast did have a calculation to work out hp, something like, boost psi x rpm x a magic number. Andy???!!
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06-25-2015, 07:24 AM #7
I use this
[MAP]*[RPM]/5150
It is just a guess assuming that the 166 MAP and 8050 RPM that the stock ski was doing at WOT was really 260 HP. It is just a guess. That formula is only good for a Seadoo 1500 blower motor. The 5150 number would be different for every basic motor configuration.
Andy
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06-25-2015, 09:34 AM #8
5150 ... thats just crazy.
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06-25-2015, 09:41 AM #9
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06-25-2015, 09:50 AM #10
you can generally figure out power from fuel consumption
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