Ficht question

[evilgli]

Originally Posted by THEFERMANATOR

You may want to have your prop and tach checked. Your numbers come out to 17% prop slip which is HUGE for WOT. 8-12% is the normal range, but much more than 10% is pushing it. Something definately isn't right with those numbers. I get roughly 2-3% prop slip with my APOLLO prop which gets me EXCELLENT bite and economy. You may be able to improve your economy noticeably just by re-propping and checking your set-up.

Next time your out check your engine height like in this post and see where your plate is in the water column underway. If it is too high that will cause your excess prop slip.
http://www.propgods.com/forum/default.aspx?g=posts&t=97

I would suggest you try and find one of these for a prop. A 15 pitch in a MIRAGE PLUS would be just about ideal for your app and speed. You might also want to have your tach checked for accuracy to make sure it's reading right.
http://cgi.ebay.com/ebaymotors/New-M...item2ea8b29e0b

just had the prop redone about 2 months ago.. not i say i hit 6000 RPM at WOT..that is with the engine trimmed WAY up.. say if i leave the engine trimmed in the middle of the gauge, the engine will only run about 5600-5700 RPM at WOT.. when the engine was in the shop about a month or so ago when i had stuck open thermostats kicking my *** (i know dumb), the techs said my tach was working fine. don't know if this makes a difference.. i will check the plate next time i'm out.