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Author Topic:   Adjustable pitch propellers
Hugh Williams posted 06-12-2003 01:19 PM ET (US)   Profile for Hugh Williams   Send Email to Hugh Williams  
I have seen these at West Marine. Has anyone used them? Also the replacable blade kind too. It would be awsome to have adjustable pitch while you are running but I know this is not what they sell @ West Marine. I heard about a kind that you could adjust while you are running but does anyone know about these.
Bigshot posted 06-12-2003 02:56 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Junk and in the long run more expensive because the blades break so easily. They also flex like hell so not very efficient.
bsmotril posted 06-13-2003 11:50 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
Land and Sea used to make a shiftable prop. It was not junk, not even close. All parts were steel, no flex. It did take some effort to set up with the proper shift cams and springs for a particular boat. They were expensive, around $700. Mercury also had a dual pitch shiftable prop out for a while. Whereas the Land-Sea prop shifted like a continuously variable transmission, the Merc Prop shifted like an old two speed hydra-glyde auto trans. Motor trim and load effected the shift points. BillS
Bigshot posted 06-13-2003 01:06 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Bill he was not asking about those, he was asking about the composite props that you replace the blades and therefore can change pitch. the Land&Sea are still made but i hear sand and dirt etc screw them up.
Hugh Williams posted 06-15-2003 10:57 PM ET (US)     Profile for Hugh Williams  Send Email to Hugh Williams     
I was asking about both the composite and the "adjustable while you are are running" props. Like in an airplane.
Bigshot posted 06-16-2003 10:55 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Oh....well you got your answers I guess.
where2 posted 06-16-2003 01:01 PM ET (US)     Profile for where2  Send Email to where2     
Like LED navigation lights, they seem to be slow in development, and high priced initially. However, at some point, I expect that the 4-stroke power plants that have slow hole-shot will be cured of this ailment by a shifting prop.

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