4130 can't be OA welded?

On Jan 2, 1:28 pm, "Morgans" wrote:

I'm not sure where this all fits in, but most lightweight bicycle frames
have a reinforcing "lug" around the tubes at the joints. Are you talking
bicycles or motorcycles?
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Hadn't really thought of it... but you CAN use O/A on a bicycle
frame. The swaged fittings you mention are available as a kit, by the
way. They are normally secured via brazing. This allows you to use
very thin-walled tubing, resulting in excellent strength-to-weight for
the finished frame. Motorsickles typically require heavier walled
tubing and are almost always welded directly, typically with MIG. But
if you take a close look at low-cost import bicycles you can see they
tend to use heavier-walled tubing & MIG. (Just lift one. Big
difference between a 'Red Dawn' and a custom-built bike (bicycle).)

-R.S.Hoover