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Old 10 July 2014, 15:00   #1
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Ribcraft 4.8 with Yamaha 75hp
Hi,
I've just bought a Yamaha 75 2 stroke for my 4.8 ribcraft and was wondering what prop size to use and what sort of speed it should achieve?
Many thanks
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Old 10 July 2014, 16:09   #2
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12x17pitch.. you could even go to a 19 pitch would be a fast and reasonable choice subject to loadings etc
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Old 11 July 2014, 19:21   #3
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Country: UK - Scotland
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RIBase
Cracking engine. Get some pics posted!
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Old 11 July 2014, 20:31   #4
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A 15 is the correct prop for a 5.4Sr. I would go with 17 or 19
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Old 12 July 2014, 08:56   #5
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It will go very very well!!!
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Old 12 July 2014, 12:54   #6
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Thanks for your help guys currently the outboard has a 15p on but think I will try a 17p first and go from there
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