TUMBLEWEED
Recruit
- Joined
- Apr 28, 2003
- Messages
- 5
Hello all, I am currently running an 2004<br />150hp Optimax on my 1850 SportFish(Crestliner).<br />It has a 19 degree aluminum prop. I am getting<br />around mid 40mph with a 5200rpm wide open.<br />There is quite a bit of cavitation with this set-up when doing any turns. I end up having to<br />throttle back and reduce the turn. This is very<br />frustrating when one is trying to do any kind<br />of tubing. The Mercury site suggests a 21<br />degree set-up, but my dealer is saying it<br />doesn't work?? Another suggestion was that my<br />aluminum prop is flexing under load in the turns<br />and to go to a stainless prop. What are the<br />rest of the OptiMax people using?? My boat<br />is 18.5 feet and approx 2300 lbs. Is a 17<br />degree to small?? I would also think that<br />5200 rpms w.o.t is a little low as well since<br />the OptiMax is listed as 5250-5750 max rpms??