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Jeremy’s Touring frame

24 Jan

Jeremy wanted a touring frame to suit his particular body. He also wanted a traditional fancy lugged frame with all the extras a touring bike needs. He went off and got measured up and after looking at the options for lugs in my stash he decided on a set of Oscar Egg lugs. I drew up the frame and had a closer look at the lugs. Most lugs are designed around the idea that frames are more or less square, ie that the top and seat tube are pretty close to each other in length. Jeremy wanted a shorter top tube so the lower head lug was going to need some tweaking. I cut a slot in the crotch of the lug and adjusted it. I brazed it up with bronze. My frames are usually silver brazed, using less heat, so this wont effect things when I put the frame together. he also wanted to use an allen key binder bolt so I filled the ears of the lug so it wouldn’t get crushed over time, once again with bronze. These are the things you have to do when dealing with older pressed lugs. It takes a bit longer but is worth it in the end. Once that was taken care of I filed up the tubes for the front triangle and lay things over the drawing. Happy with that I tacked it together in the jig and then proceeded to silver braze things together. The front triangle came out rather nicely with only 0.3mm deflection over 600mm of tube length. The rear triangle is next

Oscar Egg lugs and a fork crown

Oscar Egg lugs and a fork crown

Filling the ears on a seat lug

Filling the ears on a seat lug

Tubes, lugs and a drawing

Tubes, lugs and a drawing

Tweaking a head lug angle

Tweaking a head lug angle

Tweaking a head lug

Tweaking a head lug

Post braze check

Post braze check

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Posted by on January 24, 2018 in Uncategorized

 

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