Propnut
Senior Member
I currently have a 26”x 20 pitch left hand three blade prop on my single screw full keel 8 knot trawler. The prop seems to be the correct pitch as I can obtain rated engine rpm and it runs smoothly. I have no idea how old the prop is on this 30 year old boat. Now I’m looking for a spare prop to keep onboard. I’m thinking about just buying another 3 blade, same diameter, same pitch prop.
I’ve considered a 4 blade, but have read that two of the blades being inline with the keel can cause a problem. Then there’s three blade props with different DAR’s. I’ve read that prop technology has changed over the last 20 years . Any suggestions or experience on a more advanced prop than what I currently have.
I know there’s not a magical prop that’s going to drastically change any of my performance figures, but if I’m going to purchase a new prop, I’d like to buy the best one for my application.
I’ve considered a 4 blade, but have read that two of the blades being inline with the keel can cause a problem. Then there’s three blade props with different DAR’s. I’ve read that prop technology has changed over the last 20 years . Any suggestions or experience on a more advanced prop than what I currently have.
I know there’s not a magical prop that’s going to drastically change any of my performance figures, but if I’m going to purchase a new prop, I’d like to buy the best one for my application.