Topic: Prop Size

Last year the New Yanmar 1gm10 was installed.  This year its about the prop.
Does anyone know if a 13 inch three blade prop will fit inside the rudder space on the Contessa.

I have seen 12 inch 3 blade on this boat, But not a 13 inch. Anyone know please.  thanks

Re: Prop Size

12 inch, two blade was the biggest prop to fit the aperture on my Contessa # 284.

The cutworms are in the hollyhocks, again!

Re: Prop Size

Polmstead,

Like you a have a new 1GM10 with the prop 12 inch. 3 blades but in my case when the rudder is push hard (port oe starboard) the blades touch the rudder.

If you want to try a 13 inch. blades, even if it seam to fit, test the rudder for make sure if it's ok.

Contessa 26 #158
Sun Wave
Montreal QC

Re: Prop Size

I am currently having a Beta 14 installed in my boat. The props that were recommended to are below:

12" diameter x 8 pitch, 3 blade.

12 x 9 pitch, 2 blade.

I'm still not sure if I should go with the 2 or 3 blade option...

Re: Prop Size

Rumor has it 3-blade props back up somewhat better than 2-blade. That said, I think a 3-blade prop has more drag when the engine's off.

But what do I know?

Re: Prop Size

Lots more than lots of people