There are two common ones for i/o's. Merc makes one that is a two pitch
prop and land and sea makes a contiuously variable one.

"Bill Farina" wrote in message
...
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.