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Anyone interested in Vitus 979 and Carbone frame serial number list?

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Anyone interested in Vitus 979 and Carbone frame serial number list?

Old 11-28-22, 02:04 PM
  #26  
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I see we've got series 1 (pinch bolt seat clamp) and series 2 (grub screw). I like this nomenclature.

Based on the spreadsheet, E, F, and I are clearly for English, French, and Italian threads, and A is likely for the earliest frames of 1980-81 which were all French threaded, as stated above.

Within series 1, I think we can go finer-grained, mainly by looking at forks. Earliest forks appear to have fender eyelets on the dropouts and an aluminum steerer, as seen on the PX10DU number F037938. Says it's from '83 but who knows how long the frame took to percolate through the distribution supply chains. Later forks have the aluminum steerer without the dropout eyelets, as seen on the Fraysse-badged 979 number E059271. I have no idea when they discontinued the aluminum steerer, but number E078918 came to us with a steel steerer, and that's still a series 1 frame.

I think the aluminum steerer might explain why a lot of ebay auctions are for frames without forks. E059271's original aluminum steerer broke at the threads just below the top headset cup, so we had to replace the fork. It wasn't super dangerous, as the stem still held things together. The steering got progressively wonky as the top part of the headset separated, but the bike was rideable home.

Since Ebay listings don't stay archived forever, it might be good if we get an ID of at least series 1 or 2, color, any possible year and threading information from seller description, and fork information from each listing, and add that to the google sheet. Having a list of serials is only as useful as the data associated with that list.

We might find some more details if we could get ahold of Mike Fraysse. Anybody know how to reach him?

Eventually, I think the aspirational goal should be to establish years based off of the different serials. Hopefully it is possible.
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Last edited by scarlson; 11-28-22 at 02:09 PM.
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Old 11-28-22, 05:47 PM
  #27  
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Below is my Friend's 979, SN E131374.


I also picked up mine from the goodwill store. The bike I think has never been on the road, a NOS if you will. The wheels are mismatched, front one has durace hub with mavic open pro cd, back wheel has TNT hub, with mavic reflex.

picture of the fork:

seatpost - Douglas saddle, never heard of it.

stem - Is threadless or quill? can't really tell... I have disassemble to find out.

paper work:


inside the "Rouler facile et sur' carnet the SN does not match with the warrantee card and dated 6/6/1989 and has a Nashbar store stamp in it. . The SN is not the same on the bike, may be a clerical error. However, the date and the SN on the brochure don't support the SN/date code scheme.


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Old 11-28-22, 06:07 PM
  #28  
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Serial number on my Vitus Plus Carbone 7 is: E085321Serial number on my Peugeot PY10FC is: E099316
​​​​​​​I might be wrong, but I estimated that both bikes were made in 1986.​​​​​​​​​​​​​​​​​​​​​

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Old 11-28-22, 06:32 PM
  #29  
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Originally Posted by tmnguuyen
Below is my Friend's 979, SN E131374. I also picked up mine from the goodwill store. The bike I think is never been on the road, a NOS if you will. The wheels are mismatched, front one has durace hub with mavic open pro cd, back wheel has TNT hub, with mavic reflex. picture of the fork:seatpost - Douglas saddle, never heard of it.stem - Is threadless or quill? can't really tell... I have disassemble to find out.paper work:inside the "Rouler facile et sur' carnet the SN does not match with the warrantee card and dated 6/6/1989 and has a Nashbar store stamp in it.  post picks once i get a break from day job.
​​​​​​​I've never seen any Vitus frames,aluminum or CF, that had straight legged forks. Might thst be replacement??
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84 Gitane Tour de France.
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Old 11-28-22, 08:07 PM
  #30  
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more serial numbers

Here are the serial numbers off my bikes:

979 = E095679
Carbone-7 = E081536
Peugeot PY-10FC = E099516
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Old 11-28-22, 11:47 PM
  #31  
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VERY early 979 Ser 1 frame in Gold but no serial numb

Here is a very early 979 frame looking really nice with gold tubes
I say it's early because it's got the horizontal pinch bolt for the seat post but it has external routing across the top tube for the rear brake cable and because the "Vitus 979" on the fork is a stamped in logo rather than a decal.

Unfortunately this bike sold on ebay and the seller did not include a photo showing the serial number on the bottom bracket lug.
The URL for the completed sale on ebay is https://www.ebay.com/itm/304679600255



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Old 11-30-22, 01:09 AM
  #32  
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E124661 - 979 in blue with the new design seat post binder but weirdly only down tube water bosses.
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Old 12-15-22, 10:25 PM
  #33  
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Originally Posted by Lotus907efi
I have been over the past day or two compiling a list of the serial numbers off of various Vitus 979 and Carbone frames I have in my direct possession here or ones I have found via ebay.
I thought this might provide some insight into any serial number coding vis-a-vis production dates.
But so far based on the list of 19 serial numbers along with bike or frame pictures I do not see any rhyme or reason to the numbering.
I have discovered that there seems to be a pattern of a leading single letter of either E, F, A, or I followed by 6 numerals. Then on some of the Carbone frames underneath this on a separate line there might be an additional code of "SC"
BTW, these are all stamped into a leading edge of the under side of the bottom bracket lug next to the cable guide.

Is anyone else interested in either adding their serial number to my list or seeing said list?
Okay, I'll join in. I recently bought a Vitus 979, and I've been trying to figure out the age. Here are the details:

Serial # E099259
Grub screw seatpost
Bottle bosses on seat and downtube
Pump peg on head tube
Shimano 600EX SIS 6-speed group with 1986 date codes
It appears to have only had the VITUS decal with horizontal stripes on the top tube, and the 979 decals on the fork, and MAYBE on the down tube, hidden by a shop sticker

I hope this helps unravel the mystery in some small way.

Tim Fricker
Vienna VA USA







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Old 12-15-22, 10:35 PM
  #34  
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Oh, and for anyone on Facebook, there's a Vintage Vitus group that might be a good source of more info and serial numbers.

Tim Fricker
Vienna VA USA
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Old 06-13-23, 10:35 PM
  #35  
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I found the on-the-drops.blogspot (authored by Peter Kohler) a document to be a great reference for this bicycle and the impact it had on the market, and the sport itself. Peterís efforts and insight are much appreciated.

I have acquired a Vitus 979 last year, and started a restoration process as I had a great frame, but it had a frankenstein equipment not matching the 80's or the type of bike at all.

This document was essential to my pursuit, and I used the method provided to decipher the actual year. My serno started with E063xxx (one letter, followed by 6 digits)...

I deducted that this frame was E (A->80, B->81, C->82, D->83, E->84, F->85)from 1984... but then the 06, would indicate a 1986, and the 3 would be March, the xxx indicating the number of bikes produced that month...

So there was a problem with the deciphering, the letter AND the first two digits could not be the year. . . if not the year, was what is the letter representing ?

I proceeded to look at all Vitus bikes I could get a serno from, and ebay was a good source for that. What I could not find was any other letters used in the serno besides: A, E, F and I...

.. and here is what I believe based on the answers I got from people owning 979 with serno starting with letters E, F, or I: E stands for English Bottom Bracket, F for French Bottom Bracket, and I for Italian ones.

So what does the A represents ? Simply the first production frames that were produced with a french bottom bracket and before they produced other types of bottom brackets (this is my hypothesis, and I am still looking for validation on that point).


Now, onto the remaining digits... Sorry Peter, but I do not see how the two next digits could represent the production year and the following digit representing the month of production within the year.


Simply put, a friend of mine purchased a new Vitus in 1988, and the serno is already E103xxx. The deciphering approach was breaking down again.

Now onto the month coding. First, as mentioned in a post earlier, you need two digits, so it should be 01, 02, 03.. to 12, or if they use the next two to represent double digits months (from 10 to 12), it would drive an extra digit in the overall serno size (9 digits for bikes produced in Oct, Nov, Dec)... I have not seen any serno on a Vitus 979 frame with more than 1 letter (A, E, F or I), and 6 digits (123456). Never 7 digits, meaning that 3 months of the year could not be encoded in the serno.

Now, let's assume that the 3rd digit in the serno is the month, it leaves only 3 digits to represent the production number in this month. What do you do for frames 1000+ (again, the production volume was over 15,000 (possibly 17,000 frames in 1984, which means you have many months were more than 1000 frames were produced)... So this is another reason why this encoding approach does not work...

I believe the deciphering is more simple:
first letter A (1980-1981), then E, F and I in later years as additional bottom bracket types were produced, and the 7 digits represented just the sequential production number. . .

To find out the actual year, you need to know how many frames were produced each year... You can approximate this knowing that within each each between 1981 to 1984 between 15,000 (1981) to 17,000 (1984) frames were produced, and 10,000 frames were produced in 1980. . .

So based on the above, my bike frame was likely to be a 1984 bike frame. .

Happy to go over the above in more details, and with additional supporting information... and if you have a response to that, I am more than happy to reconsider. . .

Sincerely,

Christian
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Old 06-14-23, 06:31 AM
  #36  
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Originally Posted by tmnguuyen
Thanks for posting the SN decoder. The numeric sequence makes sense but I donít get the significance of the letter prefix. Please explain. TY
I found the on-the-drops.blogspot (authored by Peter Kohler) a document to be a great reference for this bicycle and the impact it had on the market, and the sport itself. Peterís efforts and insight are much appreciated.

I have acquired a Vitus 979 last year, and started a restoration process as I had a great frame, but it had a frankenstein equipment not matching the 80's or the type of bike at all.

This document was essential to my pursuit, and I used the method provided to decipher the actual year. My serno started with E063xxx (one letter, followed by 6 digits)...

I deducted that this frame was E (A->80, B->81, C->82, D->83, E->84, F->85)from 1984... but then the 06, would indicate a 1986, and the 3 would be March, the xxx indicating the number of bikes produced that month...

So there was a problem with the deciphering, the letter AND the first two digits could not be the year. . . if not the year, was what is the letter representing ?

I proceeded to look at all Vitus bikes I could get a serno from, and ebay was a good source for that. What I could not find was any other letters used in the serno besides: A, E, F and I...

.. and here is what I believe based on the answers I got from people owning 979 with serno starting with letters E, F, or I: E stands for English Bottom Bracket, F for French Bottom Bracket, and I for Italian ones.

So what does the A represents ? Simply the first production frames that were produced with a french bottom bracket and before they produced other types of bottom brackets (this is my hypothesis, and I am still looking for validation on that point).


Now, onto the remaining digits... Sorry Peter, but I do not see how the two next digits could represent the production year and the following digit representing the month of production within the year.


Simply put, a friend of mine purchased a new Vitus in 1988, and the serno is already E103xxx. The deciphering approach was breaking down again.

Now onto the month coding. First, as mentioned in a post earlier, you need two digits, so it should be 01, 02, 03.. to 12, or if they use the next two to represent double digits months (from 10 to 12), it would drive an extra digit in the overall serno size (9 digits for bikes produced in Oct, Nov, Dec)... I have not seen any serno on a Vitus 979 frame with more than 1 letter (A, E, F or I), and 6 digits (123456). Never 7 digits, meaning that 3 months of the year could not be encoded in the serno.

Now, let's assume that the 3rd digit in the serno is the month, it leaves only 3 digits to represent the production number in this month. What do you do for frames 1000+ (again, the production volume was over 15,000 (possibly 17,000 frames in 1984, which means you have many months were more than 1000 frames were produced)... So this is another reason why this encoding approach does not work...

I believe the deciphering is more simple:
first letter A (1980-1981), then E, F and I in later years as additional bottom bracket types were produced, and the 7 digits represented just the sequential production number. . .

To find out the actual year, you need to know how many frames were produced each year... You can approximate this knowing that within each each between 1981 to 1984 between 15,000 (1981) to 17,000 (1984) frames were produced, and 10,000 frames were produced in 1980. . .

So based on the above, my bike frame was likely to be a 1984 bike frame. .

Happy to go over the above in more details, and with additional supporting information... and if you have a response to that, I am more than happy to reconsider. . .

Sincerely,

Christian
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Old 06-17-23, 12:06 AM
  #37  
Hproduguidon
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I am French and I live in France to have several vitus 979 of several different years, they all have the letter F, I am on a group of collectors and all vitus 979 have the letter F except one I can even affirm you that the 979 second generation with the screw last the saddle they also have the letter F, therefore F for French bicycle or bicycles with the French step.
.

Last edited by Hproduguidon; 06-18-23 at 01:11 AM.
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