02-28-2009, 05:28 AM
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Senior Member
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Join Date: Dec 2002
Location: Onset, MA
Posts: 2,712
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Re: Performance on a 20cc with a 200 Yamaha ox66
Quote:
When I first seatrial my 20cc w/ DF140 Suzuki after putting on the bracket, I was running a 20" pitch Power Tech prop and hit 47 kts- 54 mph. Light load with two people, and it was chine walking  The hole shot sucked, and only turning 5000 rpm. I now run a 18P prop because I wanted a decent hole shot with heavy loads (30 gal bait well, or full load of scuba gear/tanks). Tops out at 40 mph @ 6000 rpm. I may be a little under proped, but for Sebastian Inlet, I really wanted some low end "get up and go".
Lloyd
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http://www.go-fast.com/Prop_Slip_Calculator.htm
2.38ratio
20 pitch prop
5000 rpm
= 40mph with no slip
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