Go Back  Offshoreonly.com > Technical > Prop Talk
fountain cavitation problem >

fountain cavitation problem

Notices

fountain cavitation problem

Thread Tools
 
Old 07-09-2018, 11:02 AM
  #1  
Registered
Thread Starter
 
Join Date: Feb 2008
Location: NY
Posts: 172
Received 0 Likes on 0 Posts
Default fountain cavitation problem

97 27' Fountain high x dimension. boat is new to me mild 500hp bb using a stock 3 blade 25p mirage plus. hard to get on plane, under 45 mph it has a tendency to cavitate.
over 45 performs great. any suggestions. It does need more pitch. have to get new prop anyway.
actionmarineguy is offline  
Old 07-09-2018, 12:02 PM
  #2  
Charter Member # 55
Charter Member
 
Griff's Avatar
 
Join Date: Oct 2000
Location: Omaha/LOTO
Posts: 19,555
Received 1,816 Likes on 904 Posts
Default

24 or 26 Bravo 1 4 blade
Griff is offline  
Old 07-09-2018, 01:44 PM
  #3  
Registered
 
Join Date: Dec 2007
Location: Fairway, Kansas ( KC )
Posts: 261
Received 5 Likes on 2 Posts
Default

step up the number of blades OR try moving the cooler back 6 inches.
poiuy10 is offline  
Old 07-10-2018, 11:17 AM
  #4  
Registered
Thread Starter
 
Join Date: Feb 2008
Location: NY
Posts: 172
Received 0 Likes on 0 Posts
Default

thanks for input have a 28 four blade will try like the cooler idea
actionmarineguy is offline  
Old 07-10-2018, 04:32 PM
  #5  
Registered
iTrader: (1)
 
Join Date: Jun 2011
Location: Henderson, KY
Posts: 2,167
Received 80 Likes on 56 Posts
Default

I can't remember - does the 97 have step or not?? My old 2000 27' ran best with a 24* Bravo I.
ALL_IN! is offline  
Old 07-11-2018, 11:13 AM
  #6  
Registered
Thread Starter
 
Join Date: Feb 2008
Location: NY
Posts: 172
Received 0 Likes on 0 Posts
Default

it does have a step at the stern only about a foot up nothing else. I had a few bahas they never liked the four blade. any fountain i see has a four.
actionmarineguy is offline  
Old 07-13-2018, 03:29 PM
  #7  
Registered
iTrader: (2)
 
Join Date: Jul 2010
Location: Windsor, NC
Posts: 495
Likes: 0
Received 44 Likes on 11 Posts
Default

I have a buddy with a 93 27 fountain with a 502 MPI and we tried a 25 mirage, 24 bravo, 25 revolution, a 26 hydromotive and a few other misc props and the 25 revolution was the best but his boat you cant really trim for some reason as it starts to porpoise badly and it ran 65 mph at 4900.
cdail28590 is offline  
Old 07-16-2018, 08:32 AM
  #8  
Offshoreonly Advertiser
Offshoreonly Advertiser
 
bbladesprops's Avatar
 
Join Date: Jun 2003
Location: Princeton, Wisconsin
Posts: 3,875
Received 46 Likes on 13 Posts
Default

We have some new 4-SPEED OB/FX props in 15.25 diameter that would work well.

Brett
__________________
Brett Anderson / BBLADES Professional Propellers
920-295-4435 http://www.bblades.com/
[email protected]
bbladesprops is offline  

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
Trackbacks are On
Pingbacks are On
Refbacks are On



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.