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designing a cat

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Old 12-23-2007, 10:57 PM
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Default designing a cat

Hey guys, its late and im bored so i am goofing around in auto-cad designing a cat. I have always loved the look of the USA racing cats and that is loosely what i am designing this boat around. I know the boats performance was questionable, however, i like the look and overall lines of the boat. That look is what im going for.

I have absolutely no performance cat knowledge. But my question before i get started is on most respected cats what is the tunnel width in comparison to the beam?

What i have drawn out so far is a 38' loa, 12' beam at its max, and 11' at the transom. As of right now the tunnel is 6' wide down the entire length of the boat.

This leaves makes the sponson 2'-6" at the transom and just a tad over 3' at the max beam. Does this sound about right? Or am i way off?

This is not a project i intend to build, its just for fun, but when i do something i try to do it right. Any advice is appreciated.

Rob
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Old 12-23-2007, 11:05 PM
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check out
boatdesign.net
More info over there for the design side of boating
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Old 12-23-2007, 11:08 PM
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I think your tunnel is toowide, and the rear of the sponsons are too narrow for big motors.
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Old 12-23-2007, 11:15 PM
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your probably right now that i think of it... i have no experince with these types of boats... im use to outboards.. something ill have to look in to. Thanks
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Old 12-23-2007, 11:17 PM
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any idea on how wide the sponsons should be in the rear? 3'? 4'? thanks
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Old 12-23-2007, 11:33 PM
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3ft would work.
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Old 12-24-2007, 04:32 PM
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Thanks for all of the replys
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Old 12-24-2007, 04:35 PM
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Quote:
Originally Posted by gramp View Post
tunnel should be in the 66" range, which is what the new mti's and skaters have 3' on the sponsons at max, a 38' cat should have a beam of between 10'-11', 12' is just too wide. post some pics after your done
yea and he will be a dealer for you as well...along with the other cats he is building....
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Old 12-24-2007, 04:37 PM
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Quote:
Originally Posted by offshoredrillin View Post
yea and he will be a dealer for you as well...along with the other cats he is building....
oh you figured out who he was, I was waiting for a few more entries before the
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Old 12-24-2007, 05:13 PM
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Today, 10:27 AM #15
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Posts: 18 depends on your definition of hot rod, If you mean large performance v's and cat's then there is no comparison to LOTO, if you mean small drag big blown blocks then west coast.



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