Propellers: folding X feathering
My vessel displaces 8600 lb, LWL is 23' 4", has a Volvo 13 hp engine (MD7), a sail drive (S110) and a two blade bronze folding propeller (14x8). The combination moves the vessel at approx 4.25Kn at 2200 rpm (max 2600 rpm). The prop works fine in forward motion but requires a lot of initial throttle for the blades to open in reverse, and generates a strong walk to SB. While not ideal, I'm used to this deficiency.
The prop is wobbling on the shaft and I'll be replacing it in the fall.
I believe there are feathering props available for saildrives and I wonder if technically it is an improvement over the folding prop? if you take the cost difference in consideration, which is better "value"?
Is there any way I can find out if a different pitch will improve final speed? If I can better the system, this is the time.
All other things being equal, what is the advantage of a three blade over a two blade prop?
While I'm at it, any suggestion for local suppliers in western Canada (BC)?
I'd appreciate any feedback, and thank you in advance.
SV Strudel, Niagara 31
Not all who wander are lost.