View Full Version : Prop information
Rick19256
11-23-2005, 03:23 am
Hello. I’m new here. I have searched the archives, but have not come up with the information I’m looking for. Can anyone tell me the proper diameter and pitch for a 3 blade prop on my 1981 Morgan 321? The 15” 3 blade on thewre now seems to be overloading the Yanmar 2QM20, as it will not run up to speed when I put her in gear. Thanks Rick
Rick, there is another forum that has a calculator for all of that. If you can tell me your water line length, displacement, engine hp, reduction gear ratio I can plug the numbers in and get an answer.
Rick19256
11-23-2005, 07:37 am
I'll have to look up the gear ratio, but I'll get back to you. Do you have the nake of the site? Thanks again
Try this ! I think you have to join for access. http://boatdiesel.com/Forums/Index.cfm?cfapp=6&Forum_ID=81&SearchKey=