Quote:
Originally Posted by CaptJ
I have a 19 pitch on my '99 200 yamaha as well (bolted onto my '89 V-20 Cuddy). I am seeing the same numbers. 49-50mph with the motor trimmed and turning about 5000-5100 rpms. I have been thinking about trying a 17 pitch to get more rpms out of it. Any thoughts out there?
I have a stainless 17 from my original '89 225 yamaha, when I put it on and trim her up she cavitates so I am thinking of possibly having it cupped some more.
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Generally speaking, the rule of thumb is that if you're running an alum prop and you switch to SS you go down one pitch. So a 19p Alum becomes a 17p in SS. Again, this is a general rule of thumb... individual results will vary depending on load, hull, etc etc. 
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1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.
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