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Bill Farina
 
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Default Adjustable Pitch Prop


"John Cairns" wrote in message
. ..

"Bill Farina" wrote in message
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"John Cairns" wrote in message
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"Bill Farina" wrote in message
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I'm in the process of building an e-boat and am looking for a ~19 inch
variable pitch prop along with probably the shaft and any controls that
may
be associated with it.

A friend of mine told me that Volvo makes one, but none of their
dealers
seem to know anything about it.

I have been told by others that older fishing boats used to use these,
but were unable to supply a manufacturer name.

If anyone knows of a source, it would be greatly appreciated.

Luke, Maxprop, Autoprop, Martec make feathering props with adjustable
pitches. They give you a recommended pitch, you make any necessary
adjustments. Pricey, very pricey in the case of the Luke, which are
one-offs.

http://www.peluke.com/Propellers/propellers.html

http://tinylink.com/?pbh5yrcpXO

Was that what you were referring to?


Exactly, thanks.

Now I just have to begin saving my pennys. :-)


You never mentioned why you wanted a feathering prop. Have you considered
a folding prop? Folders work better under sail than feathering
props-considerably less drag than feathering props-and even the best, like
Gori, run about half the cost of a feathering prop.

http://tinylink.com/?khyWB1cXEC

I have a Gori two blade standard folder, sweet.

John Cairns


I'm in the process of converting a 38' full keel Seafarer ketch from diesel
to electric. I have 2 electric etek motors that I'm going to hook up inline
via a belt drive to the prop shaft. The working hp of the two motors is
kind of vague and I'll probably be running on just one motor most of the
time. Depending on the configuration, the working hp equivalency can be as
much as 2-6 times the electrical hp (which is 8 (15 in short bursts) per
etek). I want to have the flexability so that I can tweak the prop to
optimum efficiency.