Thorn Cycles Forum

Community => Thorn General => Topic started by: Matt2matt2002 on August 18, 2013, 11:31:39 PM

Title: Frame size code
Post by: Matt2matt2002 on August 18, 2013, 11:31:39 PM

Spent this afternoon with my Raven upside down, giving the old girl a once over on her bottom.

Bottle cages off and the paint work cleaned.
Brakes tweaked.
Looked at the bottom bracket and decided to buy an adjuster so I can prepare for a new chain.
Checked Schwalbes.
General poke about and dust down.

Then I noticed the frame number. I had made a note of the Rohloff hub number for security reasons but this was the first time I noted the frame number.
I am 587L... and then x5 numbers. Not sure I should put the full details here. We have had discussions on a Thorn log / owners details and security etc. And I think there was no firm conclusion?

Anyway, may I ask, what is the significance, if any of those x5 numbers?
I take it the first x4 are frame size?

Matt, who now has his old bird up-right with a clean bottom

Title: Re: Frame size code
Post by: JimK on August 19, 2013, 12:40:17 AM

my suffix is 10010 - I figure part of that is the year 2010

Title: Re: Frame size code
Post by: mickeg on September 04, 2013, 05:24:35 PM

What surprised me was that my frame serial number starts with C585M, my frame size is 590M.

Title: Re: Frame size code
Post by: Dave Whittle Thorn Workshop on September 05, 2013, 03:46:30 PM

The first part is the size on Taiwanese built frames, the second part is just a sequential number and is not date related.

Hope this helps.