Offshoreonly.com - Do you trim for speed or rpm? Very odd....

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Powerquest_Baby!!

07-15-2012 11:43 PM

Do you trim for speed or rpm? Very odd....

Ive never had this happen before because NORMALLY the more you trim the faster you go...However, I just put on a new prop today and I actually go the fastest with just a little bit of trim...
4500 rpm = 55 mph
4700 rpm = 54 mph
4800 rpm = 53 mph

My engine should be operating from 4600-5000 rpm so I guess Im wondering if I should continue to trim knowing I will loose speed but gain rpm?

Griff

07-16-2012 01:38 AM

That would mean you have the wrong prop for the boat. You trim for max speed.

Mbam	07-16-2012 05:42 AM

Trim for speed - read this it explains it somewhat

http://www.go-fast.com/prop_slip.htm

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