DAYTRIPs Bertram 28 Strech

Questions about boat repairs with our resins and fiberglass: hull patches, transoms and stringers, foam, rot etc.
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Mbiggerstaff
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Re: DAYTRIPs Bertram 28 Strech

Post by Mbiggerstaff » Tue Mar 27, 2018 3:53 pm

Well done Jim. I like to keep as much of the original boat as possible as well. It adds character. There was a time when I would have been scared to death to take a saw to a boat like you did but after seeing your work and from my experience I now realize that anything is possible. Looking forward to the frame up!



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Re: DAYTRIPs Bertram 28 Strech

Post by DAYTRIP » Wed Mar 28, 2018 8:29 am

Thanks mike! I am with you. Once you get into it anything can be done. It is simply a matter of how foolish you are :roll: Did you get the spreadsheet?

Hey fuzz, used a saws all. Made easy work of it. 10 minutes at most.

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Re: DAYTRIPs Bertram 28 Strech

Post by doug42190 » Wed Mar 28, 2018 11:57 am

Ok -- we have had a thorough warm up so let's get to the main event. I am dying here! :? :?

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Re: DAYTRIPs Bertram 28 Strech

Post by BB Sig » Wed Mar 28, 2018 12:19 pm

Are you going to build another motor mount/swim platform or are you going to buy an aluminum one this time around?

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Re: DAYTRIPs Bertram 28 Strech

Post by Fuzz » Wed Mar 28, 2018 1:52 pm

You must be way better with a saws-all than me. I never get that straight and clean looking cuts.

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Re: DAYTRIPs Bertram 28 Strech

Post by DAYTRIP » Wed Mar 28, 2018 2:04 pm

New blades! I am going to integrate the bracket into the mold. Not Euro style. It will look just like a bolt on but it will be integral.

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Re: DAYTRIPs Bertram 28 Strech

Post by Fuzz » Wed Mar 28, 2018 3:35 pm

DAYTRIP wrote:
Wed Mar 28, 2018 2:04 pm
New blades! I am going to integrate the bracket into the mold. Not Euro style. It will look just like a bolt on but it will be integral.
That will be a cool project to watch :D

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Re: DAYTRIPs Bertram 28 Strech

Post by D/K effect » Sat Mar 31, 2018 6:32 am

Looks like fun!!

I’d suggest putting a diagonal brace between those temporary 2x4 cross members. (Belt and suspenders and all :D)

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Re: DAYTRIPs Bertram 28 Strech

Post by DAYTRIP » Sat Mar 31, 2018 9:17 am

Thanks d/k. That was the original plan. It is very rigid surprisingly. I added legs to stringers to help resist sagging. She has not moved based on original measurements. It is interesting how much twist you can get. I checked the side to side level aft and it was good the level at the forward supports was off by an inch. This was during the initial blocking. Definitely get some flexibility.

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Re: DAYTRIPs Bertram 28 Strech

Post by DAYTRIP » Sun Aug 26, 2018 6:25 pm

Made some progress on the stretching. Started building the molds. Using 5he technique jauques taught me here on the OB 15 build. I first built a level strong back that is screewed to stakes in the ground. The hull is leveled on the keel front to back and chines side to side. Basically I am carrying the bottom shape aft 4’6”. The chines come in about 1” for every foot it runs aft. It follows the line of th3 bottom back. So it goes down and in as it runs aft. I spaced the molds at 13” on center just because I am only using 1/4 plywood.


The transom was in place temporarily only. Building outside presents challenges. I think I am going to put a skin of mat over the plywood to protect the surface.

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Last edited by DAYTRIP on Sat Sep 01, 2018 6:17 pm, edited 3 times in total.

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