RADBMX.CO.UK
Technical & Reference Section => Tech and Restoration => Topic started by: DR VINOAH on April 12, 2007, 04:10 PM
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from bmx action jan 83 quadangle test
"reynolds 531 tubing was developed specifically for bikes.its available either butted or straight.
the quadangle uses straight tubing.
531 manganese-moly is an alloy.an alloy is nothing more than a mixture of metals to achieve a specific purpose.
like aluminium alloy is very light,chrome-moly is also an alloy.
the metals that are to be combined in a certain alloy are super heated to their melting points,then mixed,then cooled.
and ,if you dont mind a bit of over simplication,thats it,you,ve got your alloy.
manganese-moly is an alloy of cobalt,high speed steel,manganese,molbdenum,nickel,silicon and tungsten.
according to the folks at reynolds,531 tubing will retain a greater amount of its tensile strength after welding than chrome-moly will.
it will also absorb a greater amount of flex stress without fatigue failure.
or to put it another way (again according to reynolds),with manganese-moly you get more strength per pound frame weight than with chrome-moly,or the same strength with less frame weight"
hope it all makes sense ;D
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Thanks but me thinks you have too much time on your hand :LolLolLolLol:
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If I remember well, Reynolds 531 (or maybe 501) was used for the Hustler BMX, in 84-85. They were very beautifull looptail frames made in UK, but it seems that nobody has mentionned one in BMX Rad. I'm very surprised, because I'm a Swiss and I knew this brand.
Regards.