SailNet Community - View Single Post - Yanmar 3YM30 in a PS 31 cruising RPM
View Single Post
post #3 of Old 10-14-2010
FishSticks
Old Gaffer
 
FishSticks's Avatar
 
Join Date: Nov 2007
Location: Massachusetts
Posts: 177
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
 
I have a 3YM30 with almost 900 hrs. I run typically at 2750 (the recommended optimum), but have run all day at 3000 quite a few times. I have a 3-blade MaxProp set at 16X11 and the reduction gear is 2.62:1. The boat is about 19,000 lb. The RPM peaks at about 3500 (indicated RPM) under load and drives the boat at about 6.8 kt in smooth water when the bottom is clean . Hull speed is 7.7 kt. This is a sweet engine and I have had zero problems with it.

Never sail closer to the wind in degrees than your age

Last edited by FishSticks; 10-14-2010 at 07:09 AM.
FishSticks is offline  
Quote Share with Facebook
 
 
For the best viewing experience please update your browser to Google Chrome