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Old 18 June 2007, 17:29   #1
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Country: USA
Town: Windsor CT
Boat name: Blue Moon
Make: ribcraft 6.5
Length: 6m +
Engine: 150 hp honda
MMSI: 338051172
Join Date: Apr 2007
Posts: 139
one more prop question-----

Hi all,

I have a fairly new ribcraft 6.5 with a honda 150 on the back. The engine only has about 50 hours so far. My prop is a honda SS 3 blADE 14 3/4 X 20. general performance is good. My question is at WOT the engine is at 5,400-5,500 rpm at a max speed of 42 kts measured by gps .
Is this about it? I can't quite break the 50 mph mark.
Appreciate any thoughts.

Bill
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Old 18 June 2007, 18:25   #2
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Country: UK - England
Town: Midlands
Make: Nautique
Length: 6m +
Engine: PCM 5.7l
Join Date: Oct 2003
Posts: 1,082
Max rpm on that engine is supposed to be 5,500 so you've probably got all your going to get.

You could go through the hassle and expense of trying things like lifting the engine a hole or having the prop tuned but its probably not going to improve it.
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Old 19 June 2007, 09:39   #3
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Country: USA
Town: Windsor CT
Boat name: Blue Moon
Make: ribcraft 6.5
Length: 6m +
Engine: 150 hp honda
MMSI: 338051172
Join Date: Apr 2007
Posts: 139
Thanks for your response, you are most likely spot on (I hope I said that right). I would be interested in hearing from other ribcraft 6.5 owners with similar h/p engines and what they are getting for performance.

Bill
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