Aluminum to stainless prop; lost WOT rpm

[Hooty]

Re: Aluminum to stainless prop; lost WOT rpm

You could install a jack plate but that's probably too much trouble. <br /><br />c/6<br />Hooty

 

[agrazela]

Re: Aluminum to stainless prop; lost WOT rpm

Hooty,<br /><br />I considered a jack plate, but I did not want to place the center of gravity of this boat any further astern than it already is, either through added weight or through distance behind the transom.

 

[snappernz]

Re: Aluminum to stainless prop; lost WOT rpm

have you tried a permatrim on the motor

 

[agrazela]

Re: Aluminum to stainless prop; lost WOT rpm

Update:<br /><br />I got the boat to the water. After fiddling a bit with trim, I am now up to 4800 rpm, 31-33mph (by GPS). This is an improvement, but still not yet up to recommended WOT range of 5000-5500.<br /><br />I can maybe go another 3/4" higher on x-dimension before I run out of transom to clamp on to. Might I expect to get 400+ rpm from this move?<br /><br />I cannot add a permatrim (or other hydrofoil) because of the location of my kicker...with both motors down, the kicker prop would nick the hydrofoil.<br /><br />If raising the motor again does not work, I may consider having a prop shop remove cup from prop. Again I ask, how much might I expect to pay for this service?