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Framebuilders Thinking about a custom frame? Lugged vs Fillet Brazed. Different Frame materials? Newvex or Pacenti Lugs? why get a custom Road, Mountain, or Track Frame? Got a question about framebuilding? Lets discuss framebuilding at it's finest.

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Old 11-08-07, 10:23 PM   #1
Mos6502
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What is this style joint called?

This kind, where the seat stays are joined to the seat tube and top tube:


Is there a term for this?

Thanks in advance.
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Old 11-08-07, 10:59 PM   #2
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Old 11-08-07, 11:17 PM   #3
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GT made and still makes many frames with this joint. I've heard it referred to as the "triple triangle".

Oh, and please please!! show more of that Yamaguchi. He is a god.
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Old 11-08-07, 11:36 PM   #4
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The rest of the pictures are on this guy's flickr: http://flickr.com/photos/dancingweap...7594086737769/

My 1960s Columbias also feature this style joint, though it not very apparent in the photo (but you can still see it):

They also both feature a mono chainstay, which is pretty cool for such an old bike.
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Old 11-09-07, 07:22 AM   #5
WadePatton
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Called "triangular truss" by Tim Paterek. noting the third triangle formed and that canti mounting becomes complicated. Lots of ways to attach the stays.

Yes, more Yamaguchi!
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Old 11-09-07, 08:33 AM   #6
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Veteran framebuilders usually call it the "Hellenic" style- no, it's not Greek, it's named for a Brit builder from the 20-30's named Fred Hellens. But I'll bet it even predates him.
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Old 11-10-07, 06:46 PM   #7
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So I guess my next question should be, does it do anything?
I understand that it gives each seat stay approximately 100% more area to be attached to, but won't most of the stress just go to the first joint with the seat tube anyway? Although I guess it also adds bracing to the joint between the seat and top tube.
Has anybody here built a frame like this?
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Old 11-10-07, 08:08 PM   #8
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Quote:
Originally Posted by wethepeople View Post
Sexy, but thats all I know.
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Dayum is that thing ever nice!
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Old 11-13-07, 03:44 PM   #9
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White rims + white frame = NICE!!
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