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^ Yep, 26.0 is pretty significant - it means the bike does not have 28.6mm OD tubing.

If the OD of the tubes is perhaps 28.0, and it's a plain gauge tube at 0.9mm wall thickness that would be a nominal 26.2mm ID so allowing for eccentricity a 26.0mm seatpost would fit.

28.0mm tubing tends to be referred to as "French"... Most columbus frames were 28.6, but Vitus were typically 28.0, as was the 531 for the french market.

The only other bikes I've seen 26.0 seatposts on are Japanese - I had a centurion with a 26.0 post - made from plain gauge Tange tubing.

There are obviously exceptions, today I'm riding a Cliff Shrubb track bike with a 26.0mm seatpost - Some UK frame builders used Vitus tubing and some used french 531.

Turns out I made a mistake and the seatpost is actuall 27mm. Stupid me, still: thanks for the lessons on tubing!

Max...check out seventies raliegh frames from about 72 to about 80...they made frames with excatly the same lugs with campag dropouts...they sometimes stamped the seat collar and the seat posts were 26.4...
The name escapes me at the mo...they were 531 with forks to...tho maybe not the seat/chain stays...light metallic green with box lining on the tubes...

I built up one about 18 months ago...I'm damned if I can remember the name...like a royale? or regal? I know they did a royale tho I don't know if thats the frame I mean...

Tho i'm sure from the lugs it's one of those...the other lugs are to well finished...your lugs are generic ie factory......the others posted have been hand finished...

It's not a Gazelle tho...and def not AA...AA was top of the range race frame...on those you get wet...you don't have eyelets...

tho where are you? whatever it is it's quite old...that it doesn't have any braze ons...means it's pre seventies...if it's all clips then thats dating it...which takes it outof the realm of my raliegh punt...

tho it's a pretty frame...you need to look for mass produced I think...the lugs aren't hand finished, any artisan builder would have filed the lugs a lot finer...

Hi,

I have been looking at Raleighs, but I haven't found those round cutouts yet and the S/N doesn't seem to fit. I live in the Netherlands, so a Dutch brand seems a good guess.

BTW, I'm working on the bike atm, bought some nice old Dura Ace and Campy parts, which I'm cleaning up.

The title says it all, I bought a second hand bike with only the right crank.

Something similar will do as well!

Cheers,

Max

Hi,

I've posted this bike in the identification thread. I believe Peter was bidding on it as well. It seemed a Champion Mondial, but it's my first bike and I later found out it's probably something else. I though some of you might be interested in this mystery.

Original post
https://www.lfgss.com/thread44162-59.html

http://imageshack.us/a/img339/5062/65732261.jpg

I will keep digging, although maybe not today, spent way too much time obsessing over this, and I didn't know anything about vintage bikes before last weekend. I really need to be doing other stuff, but I guess we all recognise this behaviour.

Not particularly knowledgeable about such things, so I may be wrong on any of the points below.

It has fittings for mudguards (on the rear at least) and the Champion Mondial AA was a top of the range racing bike. I would also expect to see a fitting under the top tube for a racing number.

I haven't seen lug cutouts in that shape on a Gazelle before and there is no Gazelle pantographed into the fork crown.

The rear brake cable and shifters have band-on mounts; the rear derailleur cable stop is on top of the chainstay: all point to a 1970s bike. Does the cable guide go over or under the bottom bracket? I've not seen a CM AA that old.

Having said that, it does look to be a decent frame (what diameter is the seatpost) and EUR80 seems like a good price; who knows you might have something even better!

In trying to ID the frame, I'd concentrate on the combination of lug cutouts and the detail on the top of the fork crown.

Hi,

Those cutouts seem exactly the same. Sadly the kit on my bike isn't that nice, the brakes seem too be in bad shape (universal 68) and the shimano 105 derailleur is a little ugly. I'm considering buying some old dura ace brakes, new tires and handlebar and converting to a Single Speed.

Thanks for all the input BTW.

Any ideas on colors? The old suede seat is bordeaux red which makes things a little difficult. I like the seat btw, it seems to be a Selle Italia, and the model seems to say professional. Maybe I can touch it up, allthough I guess that's difficult with worn-out suede.

Max

Not particularly knowledgeable about such things, so I may be wrong on any of the points below.

It has fittings for mudguards (on the rear at least) and the Champion Mondial AA was a top of the range racing bike. I would also expect to see a fitting under the top tube for a racing number.

I haven't seen lug cutouts in that shape on a Gazelle before and there is no Gazelle pantographed into the fork crown.

The rear brake cable and shifters have band-on mounts; the rear derailleur cable stop is on top of the chainstay: all point to a 1970s bike. Does the cable guide go over or under the bottom bracket? I've not seen a CM AA that old.

Having said that, it does look to be a decent frame (what diameter is the seatpost) and EUR80 seems like a good price; who knows you might have something even better!

In trying to ID the frame, I'd concentrate on the combination of lug cutouts and the detail on the top of the fork crown.

The seatpost is a 3ttt with a 26 mm. diameter, does that say anything? I'll try to look into the placement of that weird serial number 063-3.

Do you mean this with the bottom cable guide, if so, it goes over:
http://img407.imageshack.us/img407/1529/1090339.jpg

Thanks for the help!

Hi I'm new to this forum, and this is actually the first bike I bought.
I've bought this bike second hand after a decent amount of research and advice from a friend who knows more about vintage bikes.

The decals say it's a Champion Mondial AA-super, but when I tried to find out the age, I saw that the model doesn't resemble the images online, nor does it seem to have a model number. Not all is bad, it seems to have Campagnolo dropouts and headsets and a right Campagnolo 175 strada crank (anyone have a lefty?) Ive paid 80€ for it, so I don't think I I've been completely screwed, but please tell me.

I've included some pics of the bike.

http://imageshack.us/a/img339/5062/65732261.jpg
http://imageshack.us/a/img547/7792/92358157.jpg
http://imageshack.us/a/img818/8296/19211412.jpg
http://imageshack.us/a/img809/6864/60742486.jpg

Let me know if you need more info.

Max