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Old 22 June 2006, 14:24   #11
Country: UK - Wales
Town: Barmouth
Boat name: Blue Marlin
Make: Ribcraft
Length: 7m +
Engine: Yanmar 315/Bravo 2X
MMSI: 235020218
Join Date: Jun 2003
Posts: 827
I struggle beating the jetskiers on a flat day - but once there is a bit of chop, NO PROBLEM!! (and all my teeth stay in my head as well, which is a definate bonus.)

Does anyone know whether a 1" increase in pitch for an ali prop has the same effect as a 1" pitch change on a stainless prop?

Mine (SS) over revs, but only by about 100-150 rpm, so I'm not going to worry about it (too much). But would I lose the 'rough' guesstimate of 300 rpm if I went up an inch?!?

Also, are there any tablets I can get for my prop, as I get lots of offers via e-mail for increasing size by 'x'-inches.........


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Old 22 June 2006, 14:37   #12
ashbypower's Avatar
Country: UK - England
Town: Salisbury/Poole
Boat name: Blue C
Make: XS 600
Length: 6m +
Engine: 125hp Opti
MMSI: 235082826/235909566
Join Date: Jan 2004
Posts: 1,439
A 1" increase ion pitch equates to around 200 RPM decrease and Vica Versa. You could always get your prop repitched for a resonable sum, I believe Prop Revs, Poole charge around 40 squids.


Brian C
Harbour Sea School & APS Marine Centre
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