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Boat House
Has anyone ever put a transmission in a boat?
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<blockquote data-quote="gillhunter" data-source="post: 231084" data-attributes="member: 5151"><p>When I purchased my 2005 Polar Kraft with a 90hp Yamaha 2 stroke the rigger at the marina told me that prop selection for a particular engine is dependent on what hull it is being installed and that one size doesn't necessarily fit all. The 1st prop they put on my boat ran 43mph @ 4500rpm and slow to get on plane. The second prop ran 41 mph @ 5000rpm and got on plane quickly. I also understand that the best compromise on speed and MPG is just after you get the boat on plane, lower hull resisitance in the water and a modest rpm. The data in the boat test link below seem to support that. This has been an really interesting thread! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p></p><p>https://www.google.com/url?sa=t&rct=j&q=out%20board%20engine%20speed%20vs.%20mpg%20chart&source=web&cd=1&sqi=2&ved=0CCgQFjAA&url=https%3A%2F%2Fwww.trailerboats.com%2Foutput.cfm%3Fid%3D2259109&ei=upzCTuP7JZSUtwfipuipDQ&usg=AFQjCNF9apK49u8HmUkQh43lKa2W_yqcbA&cad=rja</p></blockquote><p></p>
[QUOTE="gillhunter, post: 231084, member: 5151"] When I purchased my 2005 Polar Kraft with a 90hp Yamaha 2 stroke the rigger at the marina told me that prop selection for a particular engine is dependent on what hull it is being installed and that one size doesn't necessarily fit all. The 1st prop they put on my boat ran 43mph @ 4500rpm and slow to get on plane. The second prop ran 41 mph @ 5000rpm and got on plane quickly. I also understand that the best compromise on speed and MPG is just after you get the boat on plane, lower hull resisitance in the water and a modest rpm. The data in the boat test link below seem to support that. This has been an really interesting thread! :) https://www.google.com/url?sa=t&rct=j&q=out%20board%20engine%20speed%20vs.%20mpg%20chart&source=web&cd=1&sqi=2&ved=0CCgQFjAA&url=https%3A%2F%2Fwww.trailerboats.com%2Foutput.cfm%3Fid%3D2259109&ei=upzCTuP7JZSUtwfipuipDQ&usg=AFQjCNF9apK49u8HmUkQh43lKa2W_yqcbA&cad=rja [/QUOTE]
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Has anyone ever put a transmission in a boat?
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