Prop

[maisso]

I have a 1983 9.2A.

Current Configuration:

Yanmar 2GM
2 blade fixtes prop (Dia & pitch unknown) I'm assuming it was stock.

I'm looking to get a little more bite from my prop - especially in reverse.
What are the trade-offs.?

Is a 3 blade the way to go.... or change of pitch in a 2 blade?

Any advice would be appreciated.

Thanks

 

[BobM]

You really can't change the pitch to suit reverse. The prop is picked to apply the best torque at a given rpm range. Too much load or too little is a problem. You likely just have to learn to deal with what you have. Sailboats just aren't designed to back up.

 

[Bill1565]

Feathering props flip the leading edge over in reverse for more thrust.
They are available in both 2 and 3 blade I believe.

 

[woodster]

i have a 15d...10p 2 blade on mine it was calculated to be a 15d..11p 2 blade but i think with the age of the engine a 10p will be just right ...i do have a 11p and a 9 p just in case i am wrong....

regards

woody