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2004 Yamaha Superjet Ski was purchased new. Ski at the time of delivery had a shipping accident resulting in a stress crack of the hull. Brand new ski was completely stripped down at time of purchase. Hull was reinforced with three layers of carbon fiber in the nose, sides, and pole mount...

I have a ton experience with go-kart clutches. A dry clutch would never work dry clutches are not designed for long term abuse. When I race a dry clutch lasts only about 2 weekends. Wet clutches preform much better of over extend periods of time. A shifter kart clutch is basically the same...

I am going rip it apart tommorrow in the day light. The hull must be pretty weak because It could have only happened from nose stabs off my own wake. I am thinking full reinforcement I figure it better to spend the time now then, have an issue while I am riding in the ocean on an "actual...

So a little bit of the back story...I purchased this ski as a leftover about a year ago. Its an 05 and completely stock, I finally have a prop and intake grate coming tomorrow, but I think I am going to have to delay the install on those items. I am by no means and "expert" rider and so far I've...

Another alternative that would be interesting would be a rotary style engine similar to that of a RX-8. I am currently involved in the design of a rotary engine for a go-kart that weighs 33lbs and produces about 50hp with a wide powerband. A single rotar engine has 3 moving parts and can be...

Hey Jet-pilot, I got to USF as well a have a 05 round nose. I live on a lake 25min from campus we should meet up and ride some time I dont have much storage, but maybe we can find some thing.

The tighter you run the squish the more bottom end it will produce. .035 is not tight for a performance two-stroke considering how low the RPMs are in these engines. Also comparsion are difficult based upon the type of solder used, diatmeter, and lead content all have an effect on the measurement.