US steel trade war
On Mon, 12 Mar 2018 16:17:18 +0100, Emanuel Berg
wrote:
AMuzi wrote:
In a closed figure, overall
expansion/contraction is a real problem.
When you see guys do aluminium tubes with MIG
or TIG one gets the impression that the filler
metal and gas/weld area sure is warm enough but
for the whole structure to disalign from this
isn't something I instantly think of...
Firstly aluminum distorts more then steel at any given temperature.
But as I said previously, a bicycle is two triangles and very small
distortion of any part of a triangle will have large effects.
I suppose the bicycle frame fixtures have
clamps to allow just the right minimal play so
that tubes don't suffer too much stress/strain
while at the same time still remain in their
right places with enough stability?
--
Cheers,
John B.
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