How do you tell if a frame is 501 or 531 if there are no stickers?

montage

God Almighty
Location
Bethlehem
I have a nice light blue Triumph Cyclone frame which I am guessing is 501 due to average componants, but there is always the chance that I may be wrong
 

jimboalee

New Member
Location
Solihull
Whip out the BB.

Take a shave off the end of an exposed tube where it protrudes out of the BB shell.

Take the shave to your local metalurgist or University Materials technology dept.

Chrome and Molyblenum - 501

Molybdenum and Manganese - 531
 
OP
OP
montage

montage

God Almighty
Location
Bethlehem
Whip out the BB.

Take a shave off the end of an exposed tube where it protrudes out of the BB shell.

Take the shave to your local metalurgist or University Materials technology dept.

Chrome and Molyblenum - 501

Molybdenum and Manganese - 531


Ok, how do I find out with a method which is cheaper than buying a brand new bike? :tongue:
 

4F

Active member of Helmets Are Sh*t Lobby
Location
Suffolk.
I think that the fact it does not have a 531 sticker on it means it is either 500 or 501.
 

biggs682

Smile a mile bike provider
Location
Northamptonshire
the same question always stops me from buying a bike that has had a respray etc etc as no proof , and yes you can buy 501 and 531 stickers on flea bay
 
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