Go Back  Offshoreonly.com > Technical > General Q & A
What prop do you recommend? >

What prop do you recommend?

Notices

What prop do you recommend?

Thread Tools
 
Old 05-22-2003 | 07:19 PM
  #1  
Elite Marine's Avatar
Thread Starter
Banned
 
Joined: Aug 2002
Posts: 5,658
Likes: 1
From: IL
Default What prop do you recommend?

I was running a 29P Mirage Plus last year. Since the new motor is in I can't get the Mirage to bite without slipping or blowing out often.

Tried a 30P Lab Finished Bravo, great mid range acceleration and top end, but took forever and too much tab to get on plane, ran 4800 RPM WOT with the 30P.

Running a 28P Hydromotive right now, great out of the hole, good acceleration and decent top end, 5000 RPM WOT. The downside to this prop is that it really causes the boat to porpoise.

The boat is my 24' Pantera, 4,500#, 645HP, 1:50 Bravo

From the above info, what do you recommend?
Elite Marine is offline  
Reply
Old 05-22-2003 | 08:59 PM
  #2  
REDCHECKMATE's Avatar
Gold Member
 
Joined: Oct 2002
Posts: 61
Likes: 0
From: central ohio
Default

What was last yrs hp and speed and rpm's with the 29plus. Also what is the rpm @645hp.
REDCHECKMATE is offline  
Reply
Old 05-23-2003 | 06:32 AM
  #3  
Registered
 
Joined: Feb 2002
Posts: 1,296
Likes: 1
From: LaPorte IN.
Default

I think I would try to get a 28 lab to try. It sounds like the 30 is to much wheel and the 28 Hydro isn't carrying the boat quite right. Probably from the calculations I ran both of these are probably getting you into the high 70's. If you can swing the 28 lab 5200 RPM it may put you around 80. What rpm did the motor make its best HP? That may help get you into a pitch and the correct prop will be determined by testing.
WETTE VETTE is offline  
Reply
Old 05-23-2003 | 07:41 AM
  #4  
Dave M's Avatar
Gold Member
Veteran: Navy
25 Year Member
Gold Member
 
Joined: Oct 2000
Posts: 5,664
Likes: 140
From: Hollywood, MD, USA
Default

I have a 24 Superboat which has a very similar hull as the 24 Pantera. I had the same problems you describe with the Mirage plus. I have a 454 Mag (385 HP) and I run a 26 Bravo @ 5000 rpms. With as much HP as you have I would think a 28 bravo would be too small. Are you sure your boat weighs 4500? Is that including gear, gas, and people? I would think with 645 HP you should be around 90 MPH.
Dave M is offline  
Reply
Old 05-23-2003 | 05:35 PM
  #5  
bobby daniels
Guest
 
Posts: n/a
Default

I'm like wet vette I'd go with the 28 bravo and let the motor turn its loaded to death now I think
 
Reply
Old 05-23-2003 | 05:39 PM
  #6  
Elite Marine's Avatar
Thread Starter
Banned
 
Joined: Aug 2002
Posts: 5,658
Likes: 1
From: IL
Default

Boat should be around 4600# with me and 1/2 tank of fuel.

I was running Mid 80's with the 28P Hydromotive @ 5000 RPM.

With the 29P Mirage last year . . . . 91+ MPH. I don't remember the RPM though!!
Elite Marine is offline  
Reply
Old 05-24-2003 | 07:16 AM
  #7  
HOUSTONPROP's Avatar
Registered
 
Joined: Jul 2002
Posts: 1,387
Likes: 0
From: Houston,texas
Lightbulb thick trailing edge

Originally posted by Pantera24-650HP
I was running a 29P Mirage Plus last year. Since the new motor is in I can't get the Mirage to bite without slipping or blowing out often.

Tried a 30P Lab Finished Bravo, great mid range acceleration and top end, but took forever and too much tab to get on plane, ran 4800 RPM WOT with the 30P.

Running a 28P Hydromotive right now, great out of the hole, good acceleration and decent top end, 5000 RPM WOT. The downside to this prop is that it really causes the boat to porpoise.

The boat is my 24' Pantera, 4,500#, 645HP, 1:50 Bravo

From the above info, what do you recommend?
the thick trailing edge on the hydro causes stern lift by thinning this out this may stop most of the porporsing./Darin Houston propeller
HOUSTONPROP is offline  
Reply
Old 05-24-2003 | 07:17 AM
  #8  
HOUSTONPROP's Avatar
Registered
 
Joined: Jul 2002
Posts: 1,387
Likes: 0
From: Houston,texas
Default Re: What prop do you recommend?

Originally posted by Pantera24-650HP
I was running a 29P Mirage Plus last year. Since the new motor is in I can't get the Mirage to bite without slipping or blowing out often.

Tried a 30P Lab Finished Bravo, great mid range acceleration and top end, but took forever and too much tab to get on plane, ran 4800 RPM WOT with the 30P.

Running a 28P Hydromotive right now, great out of the hole, good acceleration and decent top end, 5000 RPM WOT. The downside to this prop is that it really causes the boat to porpoise.

The boat is my 24' Pantera, 4,500#, 645HP, 1:50 Bravo

From the above info, what do you recommend?
HOUSTONPROP is offline  
Reply
Old 05-24-2003 | 08:35 PM
  #9  
Elite Marine's Avatar
Thread Starter
Banned
 
Joined: Aug 2002
Posts: 5,658
Likes: 1
From: IL
Default

Trying a 28P Stern Driver tomorrow. Nobody around here has a 28P Bravo to try...Anyone on OSO have one I can try?

Thanks,

Kirk
Elite Marine is offline  
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
barry d.
General Q & A
14
06-08-2008 02:20 AM
chuckd1025
General Boating Discussion
3
11-07-2007 05:55 PM
Megabite
Prop Talk
1
05-30-2007 12:28 PM
flatout
General Q & A
0
06-02-2006 02:09 PM
Dave M
General Boating Discussion
12
02-03-2002 05:37 PM

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.