View Single Post
  #3  
Old 11-21-2020, 09:34 AM
77SceptreOB 77SceptreOB is offline
Senior Member
 
Join Date: Jun 2009
Location: Columbia, SC.
Posts: 1,611
Default

Quote:
Originally Posted by DonV View Post
Jim tells me with a full tank, two men 5880 rpm = 51.5 mph, with the 18 pitch 4 blade SST prop. Will be curious to see what his 30 mph rpm numbers are!
Yep. That’s correct. Those numbers were given to me by the Merc dealer guys that installed my engine. They tried 3 props and that one was the best. The other ones were a 4 Blade 21” that was too much prop, only 5275 rpm max at WOT. They also tried a 3 blade 18” but same top end mph but not as strong of a hole shot. So the 4 Blade 18” was the best of the 3 props.

I’m going out to the lake today to run the boat for myself. I’ll report back my findings
Attached Images
 
__________________
1977 SeaCraft 23' Sceptre W/ Alum Tower & Yamaha 225
www.LouveredProductsUnlimited.com
Reply With Quote