Prop Nosecone REmoval

[motorsport17]

What does removing the nosecone do?
When and why would you want to do it?

Thanks

[The Bandit]

There is a speed gain to be had by removing the cone. If you ride in salt water, it is better to just leave it on.

[WOT]

It's supposed to protect the splines from debris, etc. Some people are reporting a gain in speed by removing it. Does anyone know what is causing the gain in speed, controlled cavitation, reduced choked flow, eddy current reversion reduction?

Also, is there a corresponding gain in engine rpm, or does the speed of the ski increase with the engine at the same rpm (inidicating that the water throughput is increasing without an rpm increase)

[SeanCucf]

bottom line...we're not really sure why it helps some people....hydrodynamic mystery. we just know it does. However, some people think that it allows water in between the prob and driveshaft at high pressure and sometimes stresses the carbon seal, leaking water into the hull.

me, I ride salt and it stays on.

[WOT]

It seems like you could put some silicon goo around the splines about halfway into the prop and smear it all nice-like around the prop and shaft to keep the water out, the grease in, and not run a nose cone. It would probably dampen some of the rattly crapping sound when running on the trailer too.

[HOSS]

I yanked mine and I ride in salt water. Why? Because when changing props I noticed that water was getting into the nosecone (all but stock) so if its getting in I wanna be able to wash it out. No cone, easy rinse with hose. With cone, salt water stays trapped and starts to rust.

[The Bandit]

I yanked mine and I ride in salt water. Why? Because when changing props I noticed that water was getting into the nosecone (all but stock) so if its getting in I wanna be able to wash it out. No cone, easy rinse with hose. With cone, salt water stays trapped and starts to rust.

That makes sense. The silicone idea sounds good too. wonder if it would stay in place?