Like Tree0Likes

Cat Hulls

Reply
Old 02-08-2008, 01:04 AM
  #1
Registered
Thread Starter
 
Join Date: Feb 2008
Posts: 3
Default Cat Hulls

Besides allowing more air to pass under; what are the benefits or downsides of a cat hull with a center pod (like an eliminator or DCB) opposed to the side pods only (such as a Skater or Spectre hull)?
Mazz is offline  
Reply With Quote
Old 02-08-2008, 09:31 AM
  #2
Racer
Racer
 
Wahoo ATV's Avatar
 
Join Date: Jan 2006
Location: Columbus,MI
My Boats: 38 Fountain Canopy, V24 Bat Boat
Posts: 2,573
Default

Not sure of any real advantage to a center pod. The twin sponson hulls allow more air to compress, increasing the speed and are better in rough water since they give more wave clearance. Usually you only see the pod in smaller lake boats.
Wahoo ATV is offline  
Reply With Quote
Old 02-08-2008, 09:53 AM
  #3
Platinum Member
Platinum Member
 
WildWarrior's Avatar
 
Join Date: Aug 2004
Location: PA/ MD
My Boats: 2003 Hustler Talon ,1997-TopGun
Posts: 396
Default

The center pod helps eliminate porpoising below 85 or 90mph on a larger Cat as well as a great overall stable ride.

Over 90mph packing air the center pod on my 37' rig isn't even touching the water until a hard turn or rough water.
Rough water is where the traditional tunnel hulls will ride much much better,over 3' surf my boat will pound you hard as hell .
In the 3' + water a 36' Skater feels like a magic carpet. Twice the hull efficiency with a true tunnel vr a center pod.
We make up for the lack of efficiency by running ultra high HP and a correct set up, drive ratio ,props etc...
WildWarrior is offline  
Reply With Quote
Old 02-08-2008, 09:54 AM
  #4
Neno the mind boggler
VIP Member
Trade Score: (1)
 
glassdave's Avatar
 
Join Date: Sep 2001
Location: toledo oh
My Boats: Batboat, 38 Scarab Thunder, 16 Sidewinder, 27 Magnum
Posts: 12,667
Default

some center pod cats are single engine boats and it is there to accommodate the engine and drive as well.
__________________
Throttles- Cleveland Construction 377 Talon
08 OPA Class 1 National Champion
08 Class 1 Geico Triple Crown Champion
08 OPA High Points Champion
10 OPA Class 1 National Champion ( happy now Ed! )
glassdave is offline  
Reply With Quote
Old 02-08-2008, 01:09 PM
  #5
Registered
 
Join Date: Oct 2003
Location: Lake Stevens, Wa
My Boats: 90 Cougar 25 MTR
Posts: 78
Default

I have a 25 foot center pod cat. I really like it in smooth to to 2 1/2 - 3 ft waves, accelerates hard, good low speed handling, little or no porpoise, great top end.

Can't really run over 30 mph in over 3 ft waves. Just when you think everything is fine, you can hit a rogue wave, sky the front, trip and stuff. If only one sponson gets stuffed, it can spin out. Just have to be real carefull in the rough.

I had a small Skater before (21), loved the rough water ability, hated the porpoise and low speed handling. It wallowed like it was full of water at under 45 mph and porpoised right at the speed I like to cruise, 55-70 mph, drove me nuts.

What hull is better depends on the water you like to run in.
Propster is offline  
Reply With Quote
Old 02-08-2008, 01:38 PM
  #6
Registered
 
Join Date: Feb 2006
Location: Tallahassee, FL
My Boats: 1987 Donzi 22; 2008 Donzi 28 ZXO
Posts: 1,654
Default

I understand the center sponson has something to do with slow speed turning too, but I could never figure out the physics myself.
VetteLT193 is offline  
Reply With Quote
Old 02-08-2008, 02:10 PM
  #7
Registered
 
Brad Zastrow's Avatar
 
Join Date: Jun 2001
Location: McHenry, Illinois
Posts: 2,244
Default

Quote:
Originally Posted by WildWarrior View Post
The center pod helps eliminate porpoising below 85 or 90mph on a larger Cat as well as a great overall stable ride.

Over 90mph packing air the center pod on my 37' rig isn't even touching the water until a hard turn or rough water.
Rough water is where the traditional tunnel hulls will ride much much better,over 3' surf my boat will pound you hard as hell .
In the 3' + water a 36' Skater feels like a magic carpet. Twice the hull efficiency with a true tunnel vr a center pod.
We make up for the lack of efficiency by running ultra high HP and a correct set up, drive ratio ,props etc...
This quote is 100% on the money. I have owned both and l prefer true cats at high speed and rough water. On smoother water the modified tunnels (pod) are really nice.
Brad Zastrow is offline  
Reply With Quote
Old 02-08-2008, 02:19 PM
  #8
Registered
 
monstaaa's Avatar
 
Join Date: Feb 2005
Location: long island, newyork
My Boats: 3kids
Posts: 2,551
Default

the center pod also helps keeps the center engine in a triple engine outboard application from shearing off gear cases
monstaaa is offline  
Reply With Quote
Old 02-08-2008, 02:35 PM
  #9
Registered
 
Croozin2's Avatar
 
Join Date: Nov 2000
Location: Denham Springs, La.
My Boats: '99 Carbon Fiber Lip-Ship Top Gun
Posts: 1,540
Default

Quote:
Originally Posted by WildWarrior View Post
Over 90mph packing air the center pod on my 37' rig isn't even touching the water until a hard turn or rough water.
That's strange. We used to run the smaller tunnels (or modified V, or Mod-VP) with a center pod (STV) and the pod was actually lower than the outer sponsons - hence the name, modified V. Be interesting to hear the different thinking behind the different designs.
Croozin2 is offline  
Reply With Quote
Old 02-08-2008, 03:05 PM
  #10
Neno the mind boggler
VIP Member
Trade Score: (1)
 
glassdave's Avatar
 
Join Date: Sep 2001
Location: toledo oh
My Boats: Batboat, 38 Scarab Thunder, 16 Sidewinder, 27 Magnum
Posts: 12,667
Default

Mod VP's like the STV's run with just the pod in the water and with the sponsons in the wind. totally different from big cat dynamics, some of those little things really hang it out there
__________________
Throttles- Cleveland Construction 377 Talon
08 OPA Class 1 National Champion
08 Class 1 Geico Triple Crown Champion
08 OPA High Points Champion
10 OPA Class 1 National Champion ( happy now Ed! )
glassdave is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ENFORCER24
General Boating Discussion
44
06-14-2007 09:47 PM
Donzilla
Formula
9
08-17-2005 08:42 PM
thedonz
General Boating Discussion
2
11-12-2004 01:24 AM
Marginmn
Outerlimits
27
08-18-2004 04:21 PM
PhantomChaos
General Boating Discussion
24
07-25-2002 08:23 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



All times are GMT -5. The time now is 12:26 AM.


Copyright 2011 OffShoreOnly. All rights reserved.