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Old 06-30-18, 07:43 AM
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Saul KK
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Join Date: Jun 2018
Location: Melbourne
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Building lugged CX/touring bike

I've decided to build a cyclocross/touring bike. I've bought all the tubes and lugs, and have started practicing silver brazing on a pile of pressed lugs and cheap tubes.

I've drawn up the frame in rattlecad, and printed out a 1:1 copy of it, so that I can measure directly.

I plan on making a rough jig out of MDF or plywood, and shimming up the tubes to level.

The plan is to use the jig to hold everything in place while I drill and pin all the lugs.

I will first cut, mitre, and fit up the main triangle in the jig. Then drill and pin the lugs.

I will then dismantle the main triangle and re pin the ST to the BB for brazing, braze, check for movement, and straighten as required.

Next I plan to re pin the DT to the HT, braze, and check angle.

Then re pin DT to BB, braze and check alignment.

Then re pin TT to HT and ST, braze, and straighten.

Does this sound like the correct order of operations?

Should I be cutting, mitering and pinning the main triangle all together before any brazing? Then working on the junctions in that order? Or would I be better off mitering and pinning each joint as I go?

Any help with the order would be much appreciated. Cheers.
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