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Discussion Starter #1

Long time reader, first time poster.
Thought I would share a stainless steel frame I made for a 14' legend.
Thanks for all the help engineering this
 

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Discussion Starter #3
Very nice, What's it weigh?
I don't know what it weighs but it feels heavier than I thought it would.
It is made out of 1"x.065 and 3/4"x.065.
If I were to build another,I think I'd use 3/4" thru and thru and maybe even a few thousands thinner on the wall thickness.
Thanks

On the tubes
 

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Discussion Starter #5
It will weigh the same as steel. Did you purge it during welding?
John,
I surely considered it, I would have had to drill at least one hole at every connection to get argon thru it all, i got lazy and said let her sugar.
I also talked to a buddy that made some airboat cages that were holding up well with out purging. Do you think I should have purged it?
 

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Purging is the best but there is a product called solar flux that works well for what you are doing. It looks nice and I can appreciate how much work went into it. Good job.
 

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Purging is the best but there is a product called solar flux that works well for what you are doing. It looks nice and I can appreciate how much work went into it. Good job.
I googled solar flux and it would have been a great way to go on this project.
I had no knowledge of it till now, but I've been away from that part of the pipe trades for awhile.
Yes, it was quite a bit more work than brazing a emt frame together.
As you probably know that stainless draws worse than about anything.
I tried my best to pre camber everything and out guess how much it would pull.
Even at that, it is not totally straight.
The good news is it did not twist and has a nice gentle even arc from starboard to port.
Kind of like a cambered bridge beam.
Thanks for the kind words
 

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I'm a self proclaimed/wannabe engineer and designer. Function is without question, but then I love style! That thing is beutiful!! Make sure you add some pics to the "raft porn" thread. It can use some more pictures to go with all of the gabbing.
 

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I'm a self proclaimed/wannabe engineer and designer. Function is without question, but then I love style! That thing is beutiful!! Make sure you add some pics to the "raft porn" thread. It can use some more pictures to go with all of the gabbing.
Thanks ob1,
I,not unlike you, enjoy the imagineering as much as any of it and when the form is as good as the function it makes me high.
I will have to work on some pics.
Nuts
 

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Embrittlement can be minimized in Ti welding by ensuring complete gas coverage. You can weld it in a glove box chamber. I had a bunch of Ti and was planning a raft frame and then decided against it because it's still heavier than aluminum. Also the strength of Ti may be superior but, in the end who needs a frame that strong?
 

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Entapment

I hesitate to say anything negative because that is a beautiful piece of work. I have a Tig and never even tried welding ss before so I can imagine it's way worse than 6061 T6 Aluminum. I just see your small tube design and think entrapment. Please be careful if you put this rig on Big water.
 

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Wow, that is gorgeous! Nice job

I hesitate to say anything negative because that is a beautiful piece of work. I have a Tig and never even tried welding ss before so I can imagine it's way worse than 6061 T6 Aluminum. I just see your small tube design and think entrapment. Please be careful if you put this rig on Big water.
He followed pretty typical cat-frame design, and it isn't as bad as it looks. I know, because before I catboated I saw them and though the same thing. Yes, there is risk, but the benefits of this type of design are excellent. As with all boating, be careful and have fun!
 
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