SailNet Community - View Single Post - Yanmar 3YM30 in a PS 31 cruising RPM
View Single Post
  #5  
Old 10-14-2010
Maine Sail's Avatar
Maine Sail Maine Sail is offline
Senior Member
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,296
Thanks: 10
Thanked 117 Times in 85 Posts
Rep Power: 15
Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice
From Yanmar Help.com:

"For prolonged running, a pleasure boat engine a good operating speed is around 85% of maximum continuous rated RPM (see the engine data plate)
assuming the propeller size is correct and the engine can reach maximum rpm).

Operating for extended periods below 80% rpm may increase longevity but the cylinder bores could glaze causing an increase in oil consumption and blue smoke especially when new."


Max continuous RPM on the 3YM-30 is 3489
Max No Load Engine RPM is 3600

85% of 3489 puts your cruise RPM at 2965 RPM or just about 3000
__________________
______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




© Images In Posts Property of Compass Marine Inc.



Last edited by Maine Sail; 10-14-2010 at 07:08 AM.
Reply With Quote Share with Facebook