Classic SeaCraft Community  

Go Back   Classic SeaCraft Community > Recovered Threads
FAQ Community Calendar Today's Posts Search

Notices

 
 
Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 04-13-2015, 06:28 PM
CHANCE1234 CHANCE1234 is offline
Senior Member
 
Join Date: Mar 2003
Location: Cape Cod
Posts: 903
Default 20 SF Prop numbers

1972 20 SF. 2001 yamaha 115 two stroke. Put in at local pond for shake down and anted to get some input on numbers I received via the Garmin GPS. All speeds are in knots. Prop tested is a yamaha aluminum 13 1/4 X 17 semi clever. I feel like im hitting the rev limiter at 5700 as I have throttle left and there is definetly a noise change when bouncing off 5700.

Trimmed all the way down:

3400 RPM 17.3 kts
4000 RPM 22.7
4500 RPM 26.2
5000 RPM 29.5
5700 (WOT) 33.4

Trimmed up:

3400 RPM 16.8
4000 RPM 22.2
4500 RPM 26.7
5000 RPM 29.9
5700 RPM 34.3

How do these numbers look? Surprised that speed did not increase by even 1 knot when trimmed up. Thoughts on other props? Thanks.
Reply With Quote
 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:23 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
All original content © 2003-2013 ClassicSeacraft