Deadrise Question
 

This may have been covered before somewhere . . . but what are the three deadrise angles at the transom of the seacraft 20 that average 17 degrees?

Re: Deadrise Question
 

FWIW, I'm pretty sure that the max deadrise angle on a Potter 20 is 16 degrees.

Re: Deadrise Question
 

I believe in the patent it's 21, 13, and 10....and that's what I measured when I mocked up the transom.....screwed on a sheet of 3/8th ply, traced it, and cut it out.

Re: Deadrise Question
 

Yep.

Re: Deadrise Question
 

Is it the same on the Potter 18?

Re: Deadrise Question
 

Odd though...the brochures in th eliterature section list the the 23 as 20 degrees, the 25 seafari as 25.5 degrees....
Some are even 16 degrees in the spec brochures....

Re: Deadrise Question
 

Thanks Guys!! That makes sense . . . when you add in two 2" or 3" vertical steps and draw a line from the V to the outside edge . . . it's probably 16 or 17 degrees.

I am getting bigshrimpin's numbers. 17 degrees at the transom, measuring the planes on the bottom. Plus a 4 " wide flat at the keel and 1-3/4" steps. As best as I can tell with a far too small protractor

This thred is over 4 years old

strick

Your four years older too!:eek:

Good one Capt.!!!!

Yeah, I was testing the search function :)

Actually, I was trying to replicate the deadrise numbers. Looks like the 20 footers aren't as steep as the patent indicates. I can't get a first panel of 22 degrees. Probably the patent numbers are for larger boats.

http://www.classicseacraft.com/commu...ad.php?t=23281

Mostly I was trying to check my work before I start cutting and welding.