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Old October 21st, 2019, 12:08 AM   #13
DannoXYZ
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Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C

Posts: A lot.
MOTY - 2018, MOTM - Nov '17
Thanks for photos, how did repairs hold up? For even stronger joints, there are epoxies available from West Marine that's twice as strong as JB. I like to add 30-50% steel powder or filings to increase strength further. To point where you can machine, drill and tap it like metals.

This is interesting as I used to build custom racing bicycle frames. Some questions about failures:

- did any of bracket or tubing break? Or was it just weld?
- at break, did most of weld go with bracket?
- or did most of weld go with tubing?
- did any of tubing bend?

I've got some ideas for improving design and repairing failed joints. Would involve brazing like how high-end custom frames are made. Heat-treated alloys made into thin-wall tubes such as Reynolds 853, Hexcel or Columbus Nivacrom don't react well with elevated temperatures of welding, so they are joined with brass brazing or even lower-temp silver-solder using lugs.

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