Go Back  Offshoreonly.com > Technical > Prop Talk
4 blade? 5 Blade? Baja needs some cruising speed. >

4 blade? 5 Blade? Baja needs some cruising speed.

Notices

4 blade? 5 Blade? Baja needs some cruising speed.

Old 06-29-2005, 08:04 PM
  #1  
Registered
Thread Starter
 
wtpowered's Avatar
 
Join Date: Sep 2004
Location: Lake Champlain--Otter Creek
Posts: 78
Likes: 0
Received 0 Likes on 0 Posts
Default 4 blade? 5 Blade? Baja needs some cruising speed.

I have a Baja 240 with a basicly stock 454 mag. I am running what I am told was a 21" mirage that has been worked to about a 23" (Any way to check that?).
The boat pulls 62.2 on gps @ 4900 with almost no gas a 2 people. I think that is about all I can get for top end with the power it has, but I would be willing to give up a couple MPH on top for a gain in the 3500 rpm range. Which props should I try? A 4 blade? 5 Blade?
wtpowered is offline  
Old 06-29-2005, 08:17 PM
  #2  
JC Performance Engines
Gold Member
 
Stormrider's Avatar
 
Join Date: Jul 2002
Location: Long Island, NY
Posts: 8,891
Received 20 Likes on 17 Posts
Default Re: 4 blade? 5 Blade? Baja needs some cruising speed.

Do you need bowlift or sternlift?
Stormrider is offline  
Old 06-29-2005, 08:30 PM
  #3  
Registered
Thread Starter
 
wtpowered's Avatar
 
Join Date: Sep 2004
Location: Lake Champlain--Otter Creek
Posts: 78
Likes: 0
Received 0 Likes on 0 Posts
Default Re: 4 blade? 5 Blade? Baja needs some cruising speed.

I'm not completly sure. I have read that the Baja 24 handles better with a 4 blade then it does with a 3. I have personally never tried any other props on this boat.
wtpowered is offline  
Old 06-30-2005, 07:26 AM
  #4  
Registered
 
throttleup's Avatar
 
Join Date: Mar 2002
Location: Cajun Country
Posts: 5,143
Likes: 0
Received 1 Like on 1 Post
Default Re: 4 blade? 5 Blade? Baja needs some cruising speed.

What year is your hull, this will help to determine whether a 4B will improve your mid-range.

Julie
throttleup is offline  
Old 06-30-2005, 11:36 AM
  #5  
Offshoreonly Advertiser
Offshoreonly Advertiser
 
bbladesprops's Avatar
 
Join Date: Jun 2003
Location: Princeton, Wisconsin
Posts: 3,875
Received 46 Likes on 13 Posts
Smile Re: 4 blade? 5 Blade? Baja needs some cruising speed.

Your top end slip #'s are fine for your hull design. The bottoms of these boats have maintained the same design for years. They have changed the X dimensions as of the past few years. Your mid range numbers would tell us how much your efficacy is decreasing in that area.

9 out of 10 times the mid range cruise speeds will increase with the Bravo 1 on your boat. In this particular case, I don't think it will be a large gain. You will more than likely see an identical loss on the top end.

These boats like bow lift.
__________________
Brett Anderson / BBLADES Professional Propellers
920-295-4435 http://www.bblades.com/
[email protected]
bbladesprops is offline  
Old 06-30-2005, 12:24 PM
  #6  
Registered
Thread Starter
 
wtpowered's Avatar
 
Join Date: Sep 2004
Location: Lake Champlain--Otter Creek
Posts: 78
Likes: 0
Received 0 Likes on 0 Posts
Default Re: 4 blade? 5 Blade? Baja needs some cruising speed.

So we are only talking a 2 mph gain (or so) in the mid range. How about handling?
wtpowered is offline  
Old 07-01-2005, 12:50 PM
  #7  
Registered
 
Join Date: Feb 2003
Location: BABYLON NY
Posts: 1,626
Received 6 Likes on 5 Posts
Default Re: 4 blade? 5 Blade? Baja needs some cruising speed.

The 24's have extreme hooks on the outer chines holding the nose down. Shave them off or fill them foward and the nose will fly with less trim.The hook is so big you dont need a straight edge to see them. It worked on 2 24's that I know of.
z.zuperboat is offline  
Old 07-04-2005, 02:34 AM
  #8  
Charter Member # 55
Charter Member
 
Griff's Avatar
 
Join Date: Oct 2000
Location: Omaha/LOTO
Posts: 19,555
Received 1,815 Likes on 903 Posts
Default Re: 4 blade? 5 Blade? Baja needs some cruising speed.

I was spinning a 23 Mirage+ to 5400-5500 rpms on a 24 Outlaw. I tried a 24 Bravo 1 and gained about 4mph at cruise speeds and spun it to 5200. Lost about 3 mph on the top end, but the boat was much better outta the hole and much more stable.
Griff is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fandango
Wanted
6
05-15-2008 07:14 PM
Inspector
Prop Talk
1
07-09-2007 07:50 AM
bonecrusher
General Boating Discussion
12
03-09-2007 09:12 AM
LFarr
Prop Talk
11
08-25-2005 07:09 AM
Intolerant1
General Boating Discussion
20
04-08-2002 08:08 AM

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


Quick Reply: 4 blade? 5 Blade? Baja needs some cruising speed.


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.