Steel

anyone know anything about 731/731OS? Is it like 631 but even stiffer/harder?

anyone know anything about 731/731OS? Is it like 631 but even stiffer/harder?

I know reynolds do a touring version of 631 which has slightly thicker walled tubes for load carrying. I believe some track bikes are/were produced from this as its improved strength pressumably also makes it well suited to velodrome use. Think it might have been called 731, but I'm not sure TBH.

501 made its debut in 1983, you sure?

the reynolds tubing numbers aren't chronological. 653 came out after 753, for instance.

anyone know anything about 731/731OS? Is it like 631 but even stiffer/harder?

i think that it may not have been stiffer or stronger as it's no longer being produced whereby 631 is still available to frame manufacturers.

I'm saying 501 is a lot older than that...

I'm saying 501 is a lot older than that...

from what i've found, 501 was introduced in 1983 to meet the demands of a cheaper steel for more general applications and larger production volumes.

Really? I could swear I've seen frames from the 60s/70s made from 501..

^ no chance.
731 - 1992 Heat treated, 731 OS came out a bit later.
Both short-lived (I think 853 came out soon after.)

Scuse my french then.

Repent!
You never, know, these british comanies are shit at sequencing:
501 531 525 725 753 731 853 953 631 653 666 456 103. WTF?!

That Reynolds WTF is some pimped up shit.

I want a reynolds 666 decal.

.

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