Like Tree0Likes

Fountain brakeing prop shafts

Reply
Old 03-22-2011, 06:24 PM
  #1
Registered
Thread Starter
 
Join Date: Apr 2003
Location: Punta Gorda
My Boats: new to me 388 slingshot 2000 velocity 390 sold 2005 390 velocity sold 2001 390 velocity sold 260 velocity sold 320 velocity sold 30ft velocity sold vr1 velocity sold 35 Cigarette sold. 34 phantom cur.
Posts: 1,789
Default Fountain brakeing prop shafts

My friends 2008 38 fountain stg. 525,s brakes props and shafts but only on the left side. everything is set up and level . And we dont over trim it. 4 is level but wide open it needs more prop. so we only run it at 3.5. It came with merc. raceing 5 blade 35 bravo,s and thay are not cheep!
Velocity Tom is offline  
Reply With Quote
Old 03-22-2011, 06:46 PM
  #2
Platinum Member
Platinum Member
 
Sea-Dated's Avatar
 
Join Date: Jun 2005
Location: Tulsa, Oklahoma / GLOC
My Boats: Sold the Cafe' and boatless for now.....
Posts: 3,376
Default

Be thankful it didn't come with titanium Herings.........

Sea-Dated is offline  
Reply With Quote
Old 03-22-2011, 06:49 PM
  #3
Registered
 
Join Date: Sep 2008
Location: LOTO
Posts: 1,200
Default

That seems like a lot of prop.
redbud35 is offline  
Reply With Quote
Old 03-22-2011, 08:11 PM
  #4
Registered
Thread Starter
 
Join Date: Apr 2003
Location: Punta Gorda
My Boats: new to me 388 slingshot 2000 velocity 390 sold 2005 390 velocity sold 2001 390 velocity sold 260 velocity sold 320 velocity sold 30ft velocity sold vr1 velocity sold 35 Cigarette sold. 34 phantom cur.
Posts: 1,789
Default

No not enough prop thats what came on it. The right side is the original .
Velocity Tom is offline  
Reply With Quote
Old 03-22-2011, 08:31 PM
  #5
Registered
 
Join Date: Jan 2005
Location: South N.J
My Boats: 28 Skater 2.5's
Posts: 812
Default

does seem like ALOT of prop
Baja555 is offline  
Reply With Quote
Old 03-22-2011, 08:43 PM
  #6
Registered
 
Join Date: Oct 2009
Location: Freeport, IL
My Boats: 03 PowerQuest 300 Revenge
Posts: 286
Default

Now I am by no means an expert but based on a couple of conversations I have been in I am with the others that it is too much prop. Call Merc Racing and get their side of it... they will know for sure.
cpiefer06 is offline  
Reply With Quote
Old 03-22-2011, 08:46 PM
  #7
Registered
 
Join Date: Oct 2009
Location: Freeport, IL
My Boats: 03 PowerQuest 300 Revenge
Posts: 286
Default

Another thought... are both sides running even, could the left side be running ahead of or behind the right side. Maybe it is under more stress because it is out of sync with the other???
cpiefer06 is offline  
Reply With Quote
Old 03-23-2011, 07:54 AM
  #8
Registered
Trade Score: (1)
 
Single With Twins's Avatar
 
Join Date: Oct 2005
Location: Orangeville, ONT. CAN
My Boats: 36 Nor-Tech
Posts: 589
Default

Agree with the other comments too much prop, I have the same set up.....merc 5 blade maximus 32's, 6 blade hering 31's and 7 blade hering 30's......I have not run the 7 blade yet. I too threw 3 blades last summer on the maximus.
Single With Twins is offline  
Reply With Quote
Old 03-23-2011, 08:23 AM
  #9
Just Milkin' It
Platinum Member
 
Kelly O's Avatar
 
Join Date: May 2004
Location: Auburn, New York
My Boats: 2012 MTI 36RP; 09 35 Fountain Lightning, sold
Posts: 1,205
Default

Seems like the issue is the drive heights. Fountain gets great speed out of those 525 boats by running drives so high props end up surfacing. I don't think the Maximus is designed to be a surfacing prop.
The only way that 38 could swing a 35P is with high slip numbers due to the high drive height. That is what stresses the props.
Has anyone tried spacing down to lower slip then run a lower pitch prop ? May cost a couple mph top speed but the boat would plane and handle better and quit throwing blades.
Kelly O is offline  
Reply With Quote
Old 03-23-2011, 08:35 AM
  #10
Registered
 
Join Date: Jan 2010
Location: Winterville NC
Posts: 150
Default Heigth

Kelly O hit it on the head speaking from experience, the drives are high but thats how it runs as fast as it does. if you want to try to keep your speed try a half in. spacer, if it doesnt solve your problem it will take a 1 in. but you have to reprop and loose speed, sorrry to say it but its fact.
Driveguy is offline  
Reply With Quote
Reply



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



All times are GMT -5. The time now is 03:03 AM.


Copyright 2011 OffShoreOnly. All rights reserved.