I've just build [brazed amd MIG] a recumbent bike from old scrap
frames etc. It's my first attempt at any kind of brazing/welding. So
far everything is holding up fine.
I'm planning another one which will also use the tubing from old
frames as well as incorporating some brand new tubing. My local 'big'
hardware store has quite a good selection of metal tubing, but both
the round and the square tubing that I want to use[about 14mm x 1mm or
16mm x 1mm] comes under the heading of 'cold rolled iron'. My
knowledge of metal is pretty limited, but am I correct in thinking
that this is going to be weaker/softer than ordinary mild steel, and
so I should therefore refrain from using it? Or is 'cold rolled iron'
another name for mild steel?
I know only that steel, in all it's various varieties, is derived from
iron and various types are used in bike frame construction, and I also
know that strength is as much the result of design and geometry.
Weight is not an issue, I just want to make sure this stuff is going
to be ok.
Any input appreciated.
- posted 17 years ago