Articles
   
       
       
Pics/Video
   
       
       
Shop
Search
 
 
 
 
 
Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
WAKE WORLD HOME
Email Password
Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through August 06, 2007

Share 
Reply
 
Thread Tools Display Modes
Old    leonard araujo (laraujo)      Join Date: Apr 2007       08-02-2007, 3:37 PM Reply   
Ok so my 2003 Supra SS DD currently has a 4 blade prop. I think it may be the OJ 150 13*13 but I am not definite. Anyways, I have been told that the correct 3 blade version is more optimal for a Direct drive in terms of fuel efficiency, performance etc... I am running about 1100#'s ballast but will be moving that up to 15-1600 shortly. With current ballast at 20mph I am tachin around +3200 RPM and out of hole pull is fine. My question is if I go to a 3 blade version for my current ( or intended set up) will I still be happy with my hole shot. I would like to get my 20mph RPM down to <3000 for fuel saving and I would not mind more top end for Skiing / Cruising. I am considering the following:

Acme 543 3bld 13*11.5 (.080 cup)
OJ 150 3bld 13*12 (??? cup)

I would be interested in your experience with these? will the .5 difference in pitch present a big difference between the Acme and OJ version? or do you think I should just stay with my 4 blade prop
Old    Kevin Hoye (wakebrdr38)      Join Date: Sep 2006       08-02-2007, 4:18 PM Reply   
i just got the 542 and LOVE it! rpms are the same as the old stock prop, top speed is the same, but the whole shot is unreal. 0-21 mph with quarter throttle in only about 20 yards! slammed it with 1600 pounds and it did the same with about half power, but would easily pull out with quarter power in a reasonable distance
Old    Chris (rio_sanger)      Join Date: Apr 2007       08-02-2007, 4:23 PM Reply   
I may not be a prop guru, but I thought dropping in pitch will increase your rpm, not reduce it. Thus giving you a better hole shot, and lower top end.
Old    leonard araujo (laraujo)      Join Date: Apr 2007       08-02-2007, 5:25 PM Reply   
So if I stay with the same pitch on both my RPM will stay the same right? then what difference will the 3 vs 4 blades make?
Old    Chris (rio_sanger)      Join Date: Apr 2007       08-02-2007, 7:00 PM Reply   
Now that is a question for the true gurus... Eric at OJ, Bill Weeks at Acme, or Karl at Board It Up. Hope they answer on here, I'm curious to know that also.
Old    Leo Lasecki (malibuboarder75)      Join Date: Jan 2004       08-02-2007, 8:07 PM Reply   
I have the 542 (for reverse rotation engines). Great prop. Supposedly 3 blade props are more efficient.

Reply
Share 

Thread Tools
Display Modes

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 On



All times are GMT -7. The time now is 1:49 PM.

Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
Wake World Home

 

© 2012 eWake, Inc.    
Advertise    |    Contact    |    Terms of Use    |    Privacy Policy    |    Report Abuse    |    Conduct    |    About Us