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-   -   Serial Numbers Decoded (https://forums.thepaceline.net/showthread.php?t=99078)

AJosiahK 03-26-2014 04:51 PM

thanks!
 
Quote:

Originally Posted by Black Dog (Post 1521210)
The L stands for Long. It would have a top tube that is a cm or two longer than the standard 62cm frame. The 1161 is the production number.

Good info!

would that make this a custom or did serotta do this normally

Keith A 03-26-2014 05:08 PM

Quote:

Originally Posted by AJosiahK (Post 1521523)
Good info!

would that make this a custom or did serotta do this normally

No, this doesn't make it custom. For a period of time in the mid-90's, they had what they called their "long" versions.

oliver1850 04-02-2014 10:01 PM

Quote:

Originally Posted by Vonruden (Post 1510681)
Late 70's / early 80's? My first Serotta, pondering a restore or just ride.

http://i1266.photobucket.com/albums/...psyr0u3qeq.jpg

I haven't seen very many of the BS bikes, but would guess late 1970s. At least by 1983, the serial numbers started with the last 2 digits of the year. Maybe one of our frame builders will comment on production capabilites of a one man shop. 577 would be better than one a week for over 10 years. Not sure when Ben brought in extra help.

That frame looks original and nice. I'd address any rust issues and ride it.

oliver1850 04-02-2014 10:07 PM

Quote:

Originally Posted by jonk (Post 1520118)
My Serotta Colorado II serial number is SC59 00784. I believe it to be a 91 but it might be a 90. It can be seen here http://forums.thepaceline.net/showthread.php?t=145673

The original paint was the yellow/red fade and had the half lug on the top tube and the fillet brazed bottom bracket. Actually it appears the the bottom braket used a kind of inner lug and slipped the oversized tube on top of them (instead on inside them) so the lug is on the inside of the tubes. Heres a pic of what i mean (although its hard to see). Also, as i stated in the link, after stripping the paint I noticed the down tube was etched Tange Prestige. It was the only tube marked.

It also has the S stays and the internal brake cable on the top tube.

I'd like to see the stays. Everything else you mention indicates 1991 to me, but I don't think the S stays are consistent with a serial number that low.

oliver1850 04-03-2014 12:27 AM

Quote:

Originally Posted by AJosiahK (Post 1520302)
have a serotta ti and am looking at the serial number now, TI as in Ti legend?, 62 for the size, but the last 5 places, yes 5, confuse me a little

TI62L1161
1161 could be the production number but what would the L mean? custom Long? or ....

interesting right? or did I miss something.

what year could this frame have been made?

You can narrow down the year by checking your frame details, paint and decal colors, and decal styles against those in the catalogs. If yours says "Ti" on the TT for example, it's 1995 or later. Shifter cable stop placement and dropout design might give you a clue as well.

There was no TT length option starting in 1995. Serotta began sizing all stock road frames the same that year, and decided on the L top tube length for frames above 52 cm. So while L appears in the serial number, there were no shorter TT stock frames after 1994 (at least for a few years), but by 1998 not all models had exactly the same geometry.

jonk 04-03-2014 08:57 AM

2 Attachment(s)
Quote:

Originally Posted by oliver1850 (Post 1525372)
I'd like to see the stays. Everything else you mention indicates 1991 to me, but I don't think the S stays are consistent with a serial number that low.

Here's a few pics.

oliver1850 04-03-2014 02:38 PM

4 Attachment(s)
Your stays do look a bit curvier than the ones on my CII SN 432 (blue/yellow). I don't think they are as pronounced as on the neon NHX though (the first model to get the S bend stays). The section directly in front of the dropout goes nearly straight ahead on the NHX, then curves in more sharply.

jonk 04-03-2014 03:04 PM

1 Attachment(s)
I just assumed they were the s stays because they curved in both directions but they're clearly not a S as your NHX.

jonk 04-03-2014 03:24 PM

1 Attachment(s)
It wasn't clear in the last photo but here's the second bend...although not that much :-(

Vonruden 04-05-2014 05:28 AM

Quote:

Originally Posted by oliver1850 (Post 1525370)
I haven't seen very many of the BS bikes, but would guess late 1970s. At least by 1983, the serial numbers started with the last 2 digits of the year. Maybe one of our frame builders will comment on production capabilites of a one man shop. 577 would be better than one a week for over 10 years. Not sure when Ben brought in extra help.

That frame looks original and nice. I'd address any rust issues and ride it.

Thanks for the Feedback Oliver!

oliver1850 04-08-2014 10:29 PM

Quote:

Originally Posted by jonk (Post 1525694)
It wasn't clear in the last photo but here's the second bend...although not that much :-(

The pictures with the straight-edges are appreciated. If I can find the energy, I'll try to take similar pics of S bend stays.

Cornfed 04-17-2014 11:32 PM

Mystery Serotta serial number
 
Thanks, AngryScientist, but I'm still stumped on a frame I purchased recently. Serotta HSG with serial number: HB-X000213. Got the HB, even the X0, but I'm not seeing anything that would indicate the size. What am I missing?
Thanks for any guidance.

oliver1850 04-27-2014 10:19 AM

I don't know why they changed the system to include year rather than size. With sloping TTs becoming more prevalent at the time, a comparison to traditional sizing would seem to me to be more important info to have than the year of manufacture.

4Rings6Stars 04-29-2014 12:49 PM

Trying to determine the geometry of a Legend I am selling in the classifieds...

SN = CTI 50 4617

I read that the C means it's custom...but then what does the 50 refer to? It is neither the top tube or the seat tube measurement. What does a the nominal measurement refer to if it's custom?

More pics here: http://forums.thepaceline.net/showthread.php?t=147799

http://i733.photobucket.com/albums/w...psj5nrrxsf.jpg

oliver1850 04-30-2014 12:09 AM

The 50 should refer to the effective seat tube length, center to center, on sloping TT frames. In other words, where a level TT would intersect the seat tube.

Maybe that frame was designed as a dropped top tube frame, so the 50 might refer to where the TT would intersect the seat tube if it was attached to the HT with a normal amount of extension above the TT. That's just a guess.

Have someone hold a straightedge in a level position approximately where the centerline of the TT would be with a normal amount of HT showing above it. Measure up to the straightedge from the BB center and see if it's close to 50 cm.


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