Fillet brazed steel bikes, handcrafted in Oklahoma.

RECALL!!!!

Not really, but that’s what I feel like doing now. Ya ever do something for a while and then change the way you do it and feel like changing all the previous examples? Well, I won’t be going all George Lucas on everyone, but I really like this set of chainstays that I did from 7/8″ round 4130.

Let the pictures commence.

Here’s the starting point on my frames, the seat tube sleeve is marked with an engraver over a paper template and Sharpie.

Then I braze it to the seat tube at the appropriate place

Then I have to cut the seat tube to match the sleeve, so I cut those points twice.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aaaand enough of that. On to the money shot, which is the new chainstay design.

Right here, 7/8″ mil spec 4130 chromoly tubing, bent and dimpled to clear a 2.3″ tire with about 5mm on each side, and healthy clearance for chainrings and cranks. I can’t see it very well, but I tapered the tubes down to about 9/16″ on the drop0ut end.  It’s a short taper, only about an inch, and I think I’ll be doing it over a longer section in the future.

Don’t mind the Sharpie marks, after I tack the frame I check alignment. The marks are for me to braze everything into alignment, and they’re almost always the same. I guess that means my process is fairly repeatable.

More soon, thanks for stopping by.

 

 

 

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2 responses

  1. Jason

    How did you go about tapering the CS’s? Pretty sweet work!

    May 2, 2012 at 9:54 pm

    • edozbicycles

      I used the old Fat City trick, you spin the tube in a lathe, heat it with a torch and run a die up against it until it’s shaped like you want.

      May 3, 2012 at 7:00 pm

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