speed problems!

[ksako270]

Ok so i have a 2001 GP1200R, and i stepped my sponsons to correct my propoising problems, and now i can only hit 61mph. Before i was hitting 68-70 mph. I have a solas 13/19 impeller, riva ride plat, intake grate, and performace pump cone. What if i put my sponsons back to the way it was, and put washers under trim tabs instead. I need that speed back, so some tips would be much appreciated

[yami_rida#26]

something has to be seriously wrong with your ski no one loses that much top-end by stepping sponsons..with an angled plate you would actually gain speed in some cases...get us some rpm readings..

[JIM'S PERFORMANCE]

Ok so i have a 2001 GP1200R, and i stepped my sponsons to correct my propoising problems, and now i can only hit 61mph. Before i was hitting 68-70 mph. I have a solas 13/19 impeller, riva ride plat, intake grate, and performace pump cone. What if i put my sponsons back to the way it was, and put washers under trim tabs instead. I need that speed back, so some tips would be much appreciated

You are not losing 7 to 9 mph. by stepping your sponsons sounds like you are using your stock speedo to check mph. can't do that they are an average of 10 mph. off you have to use a gps.

[krispaintballz]

Sounds like your using your dreamometer. Like above give us some rpm readings along with some speeds on GPS.

Damn jim, I type to slow.

[chip]

how are you getting speed# dreamometer? or gps,if you change angle of ski {step sponsons} it will change speed of water across paddle wheel that is used for speed on display

ask hall pass
later cd

[ksako270]

could it be that every other time when i hit 68 or 70, i am using sunoco 94 octane?. today i used shell 93. I could just tell that the throttle was definatly not responsive like when i use sunoco 94. what if i go half way with the sponsons? put them back just enough to where it wont porpoise

[krispaintballz]

What's your compression?

[cincygpr]

Stepping sponsons SHOULD only drop you about 1/2 an MPH... you're definately using the stock dream-o-meter speedo.

And for a stock engine, there's not really much a performance gain from using anything more than 87-octane gas.

[LS2000 Cop]

Something else, I see higher Dream-O-Meter speeds with a Riva/R&D Plate than I see with an OEM plate as well.

[krispaintballz]

Stepping sponsons SHOULD only drop you about 1/2 an MPH... you're definately using the stock dream-o-meter speedo.

And for a stock engine, there's not really much a performance gain from using anything more than 87-octane gas.

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