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Thats not really a good either/or if the ski still sinks. These boats are sinking because no effort is being made to keep it from happening. The MFGs should offer foam as an option.

That battery should easily support a 20HP motor. Sounds like fun on a bicycle.

Your cooling arrangement looks fine. I would install a stock flame arrestor because even the slightest amount of water in the hull will splash right into the carbs when its rolled to the right. The most important aspects of tuning is figuring the minimum octane requirement and making sure its...

Crank seals, due to their orientation , will hold more vacuum than pressure. So just put 8-10 psi in the engine to check for a damaged seal or any other leak. The check will often reveal nothing, but its good practice. I flatten everything on a lapping plate and never have leaks, some hacks...

Most seals are offset so they can flex and follow a slightly out of round shaft. This offset makes them hold more pressure in one direction. In a watercraft engine its more important to keep the air out. Plus being able to push a little oil out makes the seal last a lot longer. I have noticed...

Seal the leak and make the idle mixture richer. You may need a larger pilot as well. Twostrokes need richer than ideal mixtures for good throttle response.

There are enough rich kids around. You need to get more of them interested in doing a backflip on an expensive boat that someone else produced. Or find a way to make hood tricks on old boats cool to the average kid. It may be difficult considering how few 20 year olds know what a standup is. Ask...

None of the organizations have ever cared about the participant. They are owned by the industry and make rules to funnel money into their hands. Everything is a custom part now, it cost no more to make it a little bigger or smaller. There is no reason to limit the machines in any way other than...

Why would they allow anything other than an unmodified OEM ignition? They opened up a can of worms when MSD was let in the rules.

Im sure Adam had rich parents to begin with and actually has no debt.

Im surprised to hear of a big company still doing apprenticeships with so many college grads around. In aviation we called them "cheap labor programs". It may be a good gig for you depending on your potiential and personality.

Two stroke oil is often application specific so use whatever is working for you. What I mean is I have tested several types and brands in several types of engines and the results were often puzzling. Mainly with the way some would be perfectly clean in one application and really gunk up a piston...

What A&P would ever touch a Rotax 447?

Big oil companies made aircooled spec oils in the past. They may still but its getting difficult to find. One really good oil that has aircooled detergent and still works well in PWC is Maxima Super M.

Klotz is fine. Oil specs are for big oil companies so they can produce the cheapest possible product that works in a particular application. Klotz and every one else who blends "racing" oil just mixes up a batch of who knows what, and puts their sticker on the bottle. Of course their products...

All these new hulls have a lot of sharp edges where the rider is likely to be.

I think you would be going backwards with a single 46 on a blaster. Use a 44 for ease of tuning AND reliability.

The FX1 was a little smaller than other production skis. Its bottom had a lot of dead rise and little grip so you had to get it on edge to turn. I thought it felt like a smaller 750sx. Better suited for small riders. The tiny pump made it impossible to make much thrust no matter how much power...

The hull is too wide and too flat to ever land big jumps without breaking your back. Make sure you can stand up easily for the hard landings.

Most of the old pipes used a .050" fixed hole.