Go Back  Offshoreonly.com > Technical > General Q & A
problems planing >

problems planing

Notices

problems planing

Thread Tools
 
Old 06-19-2011 | 03:40 PM
  #1  
Thread Starter
Registered
 
Joined: Jun 2011
Posts: 2
Likes: 0
Default problems planing

hi
i have just purchased a 1995 22 ft velocity with a fresh 550hp 454.drive is stock and has a brovo 1 stainless 30p prop on it. talked to velocity and they said that that would be the prop that came on that boat.i know that this is not exactly the right boat for me but could not pass it up due to the buy i got it for.
the boat takes a while to plane and once the bow dropes the prop startes to cavitate if you dont slightly back off the throttle. also the boat gets very light on its feet very quickly..almost out of controle. what can i do to make the boat plane faster and feel safer.
somebody mentioned a drive extension. if that is a good idea how much of a spacer should i use.
thanks,
ciesla.4 is offline  
Reply
Old 06-19-2011 | 08:47 PM
  #2  
Registered
 
Joined: Dec 2009
Posts: 867
Likes: 0
From: Grain Valley,Mo
Default

Are you giving it to much throttle and overpowering the prop. My cat blows out everytime just have to back out of the throttle and then get back into it. Just have to figure out the boat, once i get the boat on plane no problem. I have to get in and out of it 3 times, it sucks but you got to do it
firehawkcat is offline  
Reply
Old 06-19-2011 | 08:53 PM
  #3  
Registered
15 Year Member
 
Joined: Oct 2005
Posts: 1,899
Likes: 20
From: Millstadt, IL
Default

Welcome to the site !!!!
I think you may have too much prop for the boat
Oh yea what he said about driving the boat, lay off the thottle planing off.
Give us some more details about the engine build, rpm numbers, gps speeds ext.....
Loose is fast just like NASCAR,

Last edited by jeffswav; 06-19-2011 at 08:59 PM.
jeffswav is offline  
Reply
Old 06-19-2011 | 09:15 PM
  #4  
Registered
 
Joined: Dec 2009
Posts: 867
Likes: 0
From: Grain Valley,Mo
Default

What rpm's are you turning the 30p at what speed use a prop calculator just google prop calculator and see what your slip is, may be way high.
firehawkcat is offline  
Reply
Old 06-19-2011 | 09:16 PM
  #5  
Registered
 
Joined: Jul 2007
Posts: 753
Likes: 0
Default

I have a 26 bravo 1 repitched to 27 with extra cup aded by bblades, looking for a 30 pitch bravo 1 to trade fore , send me some pics and we can talk
fastscarab22 is offline  
Reply
Old 06-19-2011 | 09:49 PM
  #6  
Thread Starter
Registered
 
Joined: Jun 2011
Posts: 2
Likes: 0
Default planing oroblem

hi again.
not looking for top speed on the boat. i know that it will run an easy 80 plus on 1 ft. need to pull a tuber or poss skier. like i mentioned wrong boar but want to make it work if i can.
ciesla.4 is offline  
Reply
Old 06-19-2011 | 11:38 PM
  #7  
Registered
 
Joined: Mar 2009
Posts: 1,758
Likes: 3
From: OFallon,Mo.
Default

30P is way too high. A 24P B1 would give you better all around use. If you plan on doing a lot of tubing and sking you may even want to go 22P B1. Watch your max RPM's when going to a lower pitch.
picklenjim is offline  
Reply
Old 06-20-2011 | 02:05 AM
  #8  
Registered
15 Year Member
 
Joined: Dec 2006
Posts: 3,195
Likes: 28
From: Toronto, Ontario
Default

I have a 20 ft, with 270 hp, and we spin a 21 to 5000 rpm. I would say the 22 or 24 is gonna be too small. Give it a go, but that seems very small for a 550hp bbc in a 22 velocity
Perlmudder is offline  
Reply
Old 06-20-2011 | 10:15 AM
  #9  
Registered
15 Year Member
 
Joined: Oct 2005
Posts: 1,899
Likes: 20
From: Millstadt, IL
Default

Originally Posted by Perlmudder
I have a 20 ft, with 270 hp, and we spin a 21 to 5000 rpm. I would say the 22 or 24 is gonna be too small. Give it a go, but that seems very small for a 550hp bbc in a 22 velocity
If he is running 550HP out of a 454 then he will most likley have to spool it up to 6k RPM for peak power. It would be nice to have the build specs, the cam determines the RPM range.
jeffswav is offline  
Reply
Old 06-20-2011 | 10:31 AM
  #10  
Registered
 
Joined: Mar 2009
Posts: 1,194
Likes: 1
From: Delaware
Default

a 30p is probably perfect for top speed with that boat and power, but will not give the planing times that a smaller pitch will give. If you want to pull skiers and tubes, you will want to go smaller.
Philm is offline  
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



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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.