Adapting Mac 25 stern rail for use on a 26s

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Chumpy36
First Officer
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Sailboat: MacGregor 26S
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Adapting Mac 25 stern rail for use on a 26s

Post by Chumpy36 »

I have a stern rail from a mac 25 but it doesn't quite fit. It will need to be narrowed and I'll likely need to move the legs around a bit. I imagine I could sleeve and bolt (or rivet) pieces together but I also have a mig welder and I could get the right gas to actually weld it. Any thoughts on doing this?

I found the original drawings of the stern rail for the classics so I guess I can figure it out but if anyone has any tips or suggestions, I would love to hear it.

Thanks!
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Russ
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Re: Adapting Mac 25 stern rail for use on a 26s

Post by Russ »

--Russ
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Wyb2
Engineer
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Re: Adapting Mac 25 stern rail for use on a 26s

Post by Wyb2 »

Welding thin wall stainless is tricky. If you know how to do it, I’d imagine it’s the way to go. But if you’ve never done it before, allocate some time/material to practice.

Too much heat and you blow through the thin wall. Putting a sleeve on the inside will help with this. Too little heat and you have to go slow causing the alloying metals to separate out of the steel. This will give you a usable weld, but it will have lost most of its corrosion resistance.

Maybe MIG is easier though. I’ve only tried it with TIG, and I have limited TIG experience in general.
Chumpy36
First Officer
Posts: 245
Joined: Thu Oct 27, 2022 7:54 pm
Sailboat: MacGregor 26S
Location: Atlanta

Re: Adapting Mac 25 stern rail for use on a 26s

Post by Chumpy36 »

I ain't a master welder :) so maybe sleeving and connectors might be the way to go?

J
Chumpy36
First Officer
Posts: 245
Joined: Thu Oct 27, 2022 7:54 pm
Sailboat: MacGregor 26S
Location: Atlanta

Re: Adapting Mac 25 stern rail for use on a 26s

Post by Chumpy36 »

Russ wrote: Mon Apr 28, 2025 6:10 am Link to CAD diagram

https://railmakers.com/wp-content/uploa ... _Stern.pdf
Thank you!
Chumpy36
First Officer
Posts: 245
Joined: Thu Oct 27, 2022 7:54 pm
Sailboat: MacGregor 26S
Location: Atlanta

Re: Adapting Mac 25 stern rail for use on a 26s

Post by Chumpy36 »

Another question...

Are all of the mounting points accessible from the laz?

J
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