Mafac braze on center pulls, Courtois frame
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I have a "Courtois frame, French I believe.
It has Mafac braze on center pulls.
No name other than dural forged, Mafac, no "Racer" or "Competition" & no other markings.
This is one I have no idea about, any help on brakes or frame ages.
lugs are not fancy have had some filling, rear ends not marked as I can see, but does have gear hanger.
I will post pics when have cleaned it up, & its warmer.
Thank you for any thing you might be able to tell me.
Sam
It has Mafac braze on center pulls.
No name other than dural forged, Mafac, no "Racer" or "Competition" & no other markings.
This is one I have no idea about, any help on brakes or frame ages.
lugs are not fancy have had some filling, rear ends not marked as I can see, but does have gear hanger.
I will post pics when have cleaned it up, & its warmer.
Thank you for any thing you might be able to tell me.
Sam
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MAFAC centerpulls marked "Dural Forge" are on the earlier side for the Racer brakes, 50s or 60s. The brakes were introduced in the early 50s and the "Racer" badge wasn't put on the brakes 'til the early 70s.
With brazed-on centerpull bosses, I would guess the bike is a somewhat upper-end bike. This was only a common feature on upper-level production and custom bikes. Small production outfits like Meral and Follis were known to use the feature sometimes on semi-custom or small-run models. It was a very popular feature on full-custom constructeur bikes as well, especially 700C "sportif"-style bikes.
With brazed-on centerpull bosses, I would guess the bike is a somewhat upper-end bike. This was only a common feature on upper-level production and custom bikes. Small production outfits like Meral and Follis were known to use the feature sometimes on semi-custom or small-run models. It was a very popular feature on full-custom constructeur bikes as well, especially 700C "sportif"-style bikes.
Last edited by TenGrainBread; 01-28-20 at 02:03 PM.
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#4
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Dural forgee stamping together with red plastic bushings puts you in 1969. No obvious visible red bushing means earlier than that. Racer only means later. Inventory overhang blurs dates a bit. Those brakes work very well indeed.
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If they just have "Mafac Dural Forge" stamped on them, they are Racers older than @1970. They have brass bushings in the arms--the later ones stamped "Mafac Racer" have nylon bushings. Not a big difference between the two but having the posts brazed on does make a little more powerful brake with a little firmer feel at the lever--but not by much. Don't try to use "authentic" pads or cables, use modern consumables on Mafacs and you end up with an excellent set of brakes.
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Cycles Courtois was a retail shop located in Poitiers
successor entity termed Culture Velo a Chasseneuil
here is a randonneur constructed with MAFAC Competition braze-on centrepulls and dated by owner as 1977 -
For comparison here is an early '80's road machine. Its brake set is an odd mix of MAFAC 2000 centrepull front caliper, CLB side pull rear caliper, paired with Weinmann levers.
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Seems likely that Courtois badged cycles represent contract produced items but no hard information as yet...
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Cycles Courtois was a retail shop located in Poitiers
successor entity termed Culture Velo a Chasseneuil
here is a randonneur constructed with MAFAC Competition braze-on centrepulls and dated by owner as 1977 -
For comparison here is an early '80's road machine. Its brake set is an odd mix of MAFAC 2000 centrepull front caliper, CLB side pull rear caliper, paired with Weinmann levers.
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Seems likely that Courtois badged cycles represent contract produced items but no hard information as yet...
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Cycles Courtois was a retail shop located in Poitiers
successor entity termed Culture Velo a Chasseneuil
here is a randonneur constructed with MAFAC Competition braze-on centrepulls and dated by owner as 1977 -
Seems likely that Courtois badged cycles represent contract produced items but no hard information as yet...
-----
Cycles Courtois was a retail shop located in Poitiers
successor entity termed Culture Velo a Chasseneuil
here is a randonneur constructed with MAFAC Competition braze-on centrepulls and dated by owner as 1977 -
Seems likely that Courtois badged cycles represent contract produced items but no hard information as yet...
-----
The Campy decal on the chainstay cracked me up. I see Campy hubs, maybe seatpost, and that's it. Did I miss anything? I'm not one to talk, I once had a bike where the only Campy part was the decal.
Dropouts look like Shimano SFR, but Gipiemme made a near-exact knock-off.
Any guesses on the frame shop? We may never know unless we see invoices; details are all a bit too generic.
I agree with Feldman about using better modern rubber for the brakes. Just wanted to mention, in case anyone hasn't seen them, Koolstop makes near-perfect repops of the Mafac 4-dot pads. "Salmon" color is reputed to stop better in the rain, can't say I've noticed that but it must be true if everyone says it. But the black ones are more correct for formal wear to fancy-dress parties, and they stop pretty good.
Mark B in Seattle
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I agree with Feldman about using better modern rubber for the brakes. Just wanted to mention, in case anyone hasn't seen them, Koolstop makes near-perfect repops of the Mafac 4-dot pads. "Salmon" color is reputed to stop better in the rain, can't say I've noticed that but it must be true if everyone says it. But the black ones are more correct for formal wear to fancy-dress parties, and they stop pretty good.
Mark B in Seattle
Mark B in Seattle
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cycle owner states frame ends Yoshi
Tullio transfers -
my guess would be they were fitted by framebuilder
assembly likely would have been performed at retail shop, hence the apparent contradiction...
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cycle owner states frame ends Yoshi
Tullio transfers -
my guess would be they were fitted by framebuilder
assembly likely would have been performed at retail shop, hence the apparent contradiction...
-----
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I'll try and dig up some pictures. It had clubs in the logo like a Colnago, which I thought was a little bit trademark infringement, but it rode ok. It had English threading in the places that mattered. What more could a college student want?
Seems likely that Courtois badged cycles represent contract produced items but no hard information as yet...
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Owner & co-founder, Cycles René Hubris. Unfortunately attaching questionable braze-ons to perfectly good frames since about 2015. With style.
Owner & co-founder, Cycles René Hubris. Unfortunately attaching questionable braze-ons to perfectly good frames since about 2015. With style.
Last edited by scarlson; 01-28-20 at 08:01 PM.
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I agree with Feldman about using better modern rubber for the brakes. Just wanted to mention, in case anyone hasn't seen them, Koolstop makes near-perfect repops of the Mafac 4-dot pads. "Salmon" color is reputed to stop better in the rain, can't say I've noticed that but it must be true if everyone says it. But the black ones are more correct for formal wear to fancy-dress parties, and they stop pretty good.
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Shortening the straddle cable will compensate for that. Modulation is fantastic. Hand strength increases as the lever compresses, I've found - super stiff brakes don't allow my hand to get into my "strength zone", too "springy" and they'll bottom out before maximum braking power is achieved. It's one of those things that's dependent on the individual rider, methinks.
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MAFAC centerpulls marked "Dural Forge" are on the earlier side for the Racer brakes, 50s or 60s. The brakes were introduced in the early 50s and the "Racer" badge wasn't put on the brakes 'til the early 70s.
With brazed-on centerpull bosses, I would guess the bike is a somewhat upper-end bike. This was only a common feature on upper-level production and custom bikes. Small production outfits like Meral and Follis were known to use the feature sometimes on semi-custom or small-run models. It was a very popular feature on full-custom constructeur bikes as well, especially 700C "sportif"-style bikes.
With brazed-on centerpull bosses, I would guess the bike is a somewhat upper-end bike. This was only a common feature on upper-level production and custom bikes. Small production outfits like Meral and Follis were known to use the feature sometimes on semi-custom or small-run models. It was a very popular feature on full-custom constructeur bikes as well, especially 700C "sportif"-style bikes.
Thank you for your help with this
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Hi I have just been taking the bike apart, the brakes have a brass bushing.
The number on the BB is the same as the steerer, which is EF3.
The over spray on the steerer tube is the same colour as the frame.
The seat post is stamped 26 & is not one I have seen before, very early all in one.
The Stronglight chainset is Deposse 170 mm.
The forks ends are 100 front, 120 or just under on the rear.
The campag L/F hub is early 5 speed, has Campagnolo in a sun, with the little rays top and bottom, the quick release lever is straight.
when I can will post some pics.
thank you for your help.
The number on the BB is the same as the steerer, which is EF3.
The over spray on the steerer tube is the same colour as the frame.
The seat post is stamped 26 & is not one I have seen before, very early all in one.
The Stronglight chainset is Deposse 170 mm.
The forks ends are 100 front, 120 or just under on the rear.
The campag L/F hub is early 5 speed, has Campagnolo in a sun, with the little rays top and bottom, the quick release lever is straight.
when I can will post some pics.
thank you for your help.
It is a common misconception in the English-speaking world that the "Depose" on the Stronglight cranks is the model name. The French term for "trademark" is "marque déposée". The actual model name is 49D.
All the other components you list point to a 60s bicycle. Looking forward to pictures!
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regarding BB assembly on blue machine -
owner states BB assembly Stronglight
if you open the image showing the left side of the BB area you can see that lockring is alloy and bearing cup is clearly marked "STRONGLIGHT FRANCE"
frankish posters write that at the Poitiers location customers were able to select their becane "piece-by-piece"
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here is a later '70's midliner -
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late '70's road machine converted to fixed -
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regarding BB assembly on blue machine -
owner states BB assembly Stronglight
if you open the image showing the left side of the BB area you can see that lockring is alloy and bearing cup is clearly marked "STRONGLIGHT FRANCE"
frankish posters write that at the Poitiers location customers were able to select their becane "piece-by-piece"
---
here is a later '70's midliner -
---
late '70's road machine converted to fixed -
-----
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Thanks for the info. Hopefully you should be nearing the post limit to post pictures. If you need help posting them, let us know. You can use the forum picture upload function or a third party hosting site like Flickr that gives you a line of BBCode to insert.
It is a common misconception in the English-speaking world that the "Depose" on the Stronglight cranks is the model name. The French term for "trademark" is "marque déposée". The actual model name is 49D.
All the other components you list point to a 60s bicycle. Looking forward to pictures!
It is a common misconception in the English-speaking world that the "Depose" on the Stronglight cranks is the model name. The French term for "trademark" is "marque déposée". The actual model name is 49D.
All the other components you list point to a 60s bicycle. Looking forward to pictures!
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MAFAC centerpulls marked "Dural Forge" are on the earlier side for the Racer brakes, 50s or 60s. The brakes were introduced in the early 50s and the "Racer" badge wasn't put on the brakes 'til the early 70s.
With brazed-on centerpull bosses, I would guess the bike is a somewhat upper-end bike. This was only a common feature on upper-level production and custom bikes. Small production outfits like Meral and Follis were known to use the feature sometimes on semi-custom or small-run models. It was a very popular feature on full-custom constructeur bikes as well, especially 700C "sportif"-style bikes.
With brazed-on centerpull bosses, I would guess the bike is a somewhat upper-end bike. This was only a common feature on upper-level production and custom bikes. Small production outfits like Meral and Follis were known to use the feature sometimes on semi-custom or small-run models. It was a very popular feature on full-custom constructeur bikes as well, especially 700C "sportif"-style bikes.
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Fun-looking bike, not something you see every day. I've no idea the maker but it does say higher-end, semi-custom production bike to me. The frame has some hints here and there of a shop with efficiency rather than perfection on its mind - the pinholed brazing on the brake mounts, for example. But the overall frame is not something you'd buy off-the-shelf. There is some good attention-to-detail like the neatly finished stay ends at the rear dropouts.
The bracket on the non-drive-side chainstay just under the brake caliper is for a rim/sidewall generator for lighting. A common feature on decent randonneur and camping bikes of the era.
Post up some pictures of the frame and some close-ups of the seat cluster. That might help with an ID.
The bracket on the non-drive-side chainstay just under the brake caliper is for a rim/sidewall generator for lighting. A common feature on decent randonneur and camping bikes of the era.
Post up some pictures of the frame and some close-ups of the seat cluster. That might help with an ID.
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Hello Sam,
thank you for the photos. these should aid the forum's experts to give you some solid information.
the stamped ends with the forged gear hanger make me wonder if they may be something the builder created on their own by adding a Campag Nr. 80/1 to an existing stamped dropout.
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Hello Sam,
thank you for the photos. these should aid the forum's experts to give you some solid information.
the stamped ends with the forged gear hanger make me wonder if they may be something the builder created on their own by adding a Campag Nr. 80/1 to an existing stamped dropout.
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As for me, I see the "FR" letters when I put on some magnifiers, but I'll take your word for it on the rest
The beveled-edge lock ring that's slightly off-color reminds me a lot of the Mavig 600-series threadless BB.
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Here is one more example. This time in bare metal. It exhibits some similarities to both subject machine and to blue cycle...
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Here is one more example. This time in bare metal. It exhibits some similarities to both subject machine and to blue cycle...
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This is how it appears following completion of restoration and reassembly -
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This is how it appears following completion of restoration and reassembly -
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juvela
That is a job well done, looks really good.
Are you going to put toe clips on, I can't ride with out.
That is a job well done, looks really good.
Are you going to put toe clips on, I can't ride with out.
Last edited by Ephgrave; 01-31-20 at 07:16 AM.