Does this seem right?

anzomcik

Petty Officer 2nd Class
Joined
Jul 26, 2008
Messages
158
I got my 90hp merc L6 running good. I tried three props and i am a little puzzled on the results. here they are

19p SS came on motor (cant find a brand on it) 4500rpm 36mph
To aggressive

17p Al Mic wheel 5200rpm 32mph
Did not feel good, poor midrange

15p SS Solas HR titan 5000 rpm 34mph
I really like the feel, but was hoping for more rpm out of her

I had done the test on a nice almost perfect day slight chop. I know my gps is very close on the speed, but i am puzzled on such a rpm drop or varience should i say over the range of pitch i used.

If i go to a 15p Al should i get the rpm back i lost from the SS?

My range i should be in is from my manual says 4500-5000. from iboats 5000-6000 and another place 5000-5500 i kinda hit them all but should i worrie about being on the low end of the two places i seen?

This is a fishing boat she is heavy for her size 16.5 feet and when loaded with men and gear about 1900-2000 lbs est. So should i be happy with my overall this is my first larger motor and i do not know what to expect. thanks
 
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