The rider stands at the rear on stand up skis so his weight is part of the skis balance. A full length Superjet can accommodate larger than average riders. Most smaller guys need to shorten the rear so they can get the nose up. Getting it to plane and keeping it from porpoising is the challenge...
We use to get by with a 65gram spring and opening the top screw 2 turns out. Now I would add a larger main and pilot jet and leave the stock spring in it.
With a good tuned pipe, waterbox flow is not an issue since the pipe needs some back pressure to work. The breadbox has no tuning so it needs less downstream restriction to work best. A stock 61x cylinder works well with the breadbox. A pipe is worth about 3 MPH. A higher ported cylinder with...
We have different interests. My time spent in a materials lab taught me that all composite structures, with rare exceptions, should be painted white. They stay cooler in the sun and are stronger that way. My time spent as a jetski owner taught me the bottom paint should be the same color as...
Destroying the top half of an engine doesn't make the easiest life for the bottom half. What else did he do to it??? No rev limiter??? Never over pay for used jetski junk!
A larger diameter pump always work better at low hull speeds. A smaller pump needs steeper blade angles, this along with less inlet area make the pump cavitate more at low speeds. A stock 701 will work fine with a 155.
Yea, you are missing my point... The chances of finding a jetski owner who can and will do top quality work is almost as likely as winning a lottery. So, if one has covered a hull with paint it becomes very difficult to find damage. A stock hull with original paint is easy to inspect. A...
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