Stumpalump
Chief Petty Officer
- Joined
- Dec 5, 2013
- Messages
- 413
I've narrowed my prop choice down to two based on availability. They are both OEM props. One is a stainless 11 1/4" X 19 pitch and the other an aluminum 12" x 17 pitch. I'm leaning toward the smaller diameter higher pitch but never experianced a diameter change before. What's effect does diameter have on it?
Boat is a very light 1993 Aluminum 18' Valco Bayrunner with Evinrude 48 special . Wot RPM 4500-5500. Current recently damaged prop was a an old 17p aluminum running 5900 @ 34 mph on a cold day with empty load. Cruise has been is 24 mph 4600 rpm.
Boat is a very light 1993 Aluminum 18' Valco Bayrunner with Evinrude 48 special . Wot RPM 4500-5500. Current recently damaged prop was a an old 17p aluminum running 5900 @ 34 mph on a cold day with empty load. Cruise has been is 24 mph 4600 rpm.