1947 Camille Daudon – Frame Details

My 1947 Camille Daudon bicycle, custom built for Irene Faberge Gunst, is currently in a state of disassembly, so this seems a perfect time to share some details of the frame’s construction.

While I have some information about this bike from the previous owner, I wasn’t sure about the steel tubing.  Because the previous owner had re-chromed the frame, all the original decals and transfers were lost.  So, I was delighted to see this VITUS logo on the steerer tube when I removed the fork.  This logo probably means that all the frame tubes are Vitus – a quality steel tubing made by the French company Atelier de la Rive.

The work done to create this frame is far beyond anything you would ever see today, except from a custom builder.  The creases in the chainstays, to provide clearance for the crankset and the wheels are beautifully executed.  And, the sloping downtube connection to the seat-tube is one of my favorite designs for mixte bikes that use a single, rather than double, sloping top tube.  This type of robust brazing firms up the frame, and gives the mixte bike better handling characteristics.  Peter Wiegle has continued this concept on the mixte frames he has built.

Pinned chainstays

Another interesting feature are the pins used to secure the chain stays, as can be seen by peering inside the bottom bracket shell.  Pinning the tubes was a method used by a number of builders of this era, and is even continued today by Mercian, whose process involves using a brick oven to heat the tubes for brazing.  I don’t know whether Camille Daudon used this heating process, as the only tubes which are pinned in this frame are the chainstays.

The finish work on the stays is beyond anything I normally see – simply extraordinary.

This frame has only a few braze-ons -the shifter mount, pump pegs, and shifter and brake cable routing.  Most notably, there are no braze-ons for a dynamo nor for a chain guard.  Since this bike was designed for commuting and city riding in San Francisco, that seems odd to me.

1947 Camille Daudon mixte, prior to re-chroming

Prior to being re-chromed, the frame looked as above.  As you can see, the chrome was seriously compromised.  Chroming a bicycle frame is a harsh process that may not yield the results you are looking for.  It is very labor intensive, and will remove some brazing material from the frame.  It is essential that the frame be thoroughly cleaned and the old plating removed before re-chroming.

The previous owner thought that he had prepared the frame correctly for the chroming process, but unfortunately a small section of the drive side seat stay developed a hole during the re-chroming, due to incorrect preparation.  This is an area of frame construction where failures can develop.  However, in this case it looks like the combination of incorrect preparation, along with the harshness of the re-chroming process itself, caused this hole to develop. While it is a small flaw, it’s something to take note of.

I haven’t decided yet whether I will try to re-create the Daudon logos which were original to the frame, as shown in the above photo.  I love seeing such a large head tube on a smaller frame such as this, which should provide for a comfortable riding experience.

Best of all about this disassembly process was seeing the codes engraved on the fork and rear dropouts – “471” which makes me think that this was the very first bicycle off the line from Daudon’s shop in 1947.  A nice, and interesting,  thought.

Frame dimensions:

Seat tube:  50 cm

Top Tube -effective:  52.5 cm

Wheelbase:  102.5 cm

Frame Weight:  5 pounds, 15 ounces

Material: Vitus steel tubing

1950’s Simplex Pull Chain Front Derailleur

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I was cleaning out one of my parts bins and discovered this unusual Simplex pull-chain front derailleur.  I can’t remember the bicycle this came from, so I didn’t have any clue as to its date of manufacture.  But, I assumed this piece dated from the 1950’s to 1960’s.

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I pulled out my copies of The Dancing Chain and The Data Book, hoping that I could spot some info about this front derailleur.  But, nothing was there.  Then I did an internet search and found that a 1938 version of this front derailleur is on sale on eBay.  Additionally, there are some photos on flicker featuring an earlier version of this model.  I also found what appears to be this exact model on the Velobase website – a Simplex Juy 56 front derailleur.

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This Simplex front derailleur features an adjustable cage for adapting to 1/8″ or 3/32′ chain sizes, effected by the two screws on top of the derailleur cage.  I disassembled the derailleur for cleaning, and was able to observe the specifics of how it operates.

When the pull chain is engaged by a shifter cable, the whole mechanism slides on the two cylinders which attach to the cage.  One of the cylinders contains the spring system, and the other is meant to provide stability to the cage as it slides, so is rigid.

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The derailleur mounts to a seat tube bracket with two bolts, shown on the left side in the photo above.  If a frame lacks such mounts, then brackets can be attached to the derailleur so that it will mount to any seat tube.

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The eBay model for sale today is purportedly a 1938 “NOS” version with a $475 asking price.  We’ll see about that.  Meanwhile, I am going to keep this front derailleur in my collection, in case something comes along that warrants its application.

1947 Peugeot Bicycle Catalogue

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Finding new vintage bicycle catalogues is a joyous occasion, especially when they feature a bike in my collection.  I really love vintage Peugeot bicycles – they are particularly enjoyable due to their emphasis on rider comfort, as you can see depicted in the drawing above.

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1947 Peugeot 650b as restored

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1947 Peugeot as a box of parts

I restored this 1940’s Peugeot without knowing its date of manufacture.  The bike came to me with many missing parts, including a missing wheelset and fenders.

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One of the things that made me want to restore this incomplete collection of parts into a complete bicycle was the presence of the two original keys to the fork lock – very unusual, given that many other parts were missing.

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This 1947 Peugeot Mixte is built with high end Vitus Rubis tubing, with an H75623 serial number. A while back a Canadian cyclist contacted me with a Peugeot Serial Number spreadsheet which indicated that this bike was a rare 1947 model.  I reviewed his analysis and agreed with his conclusion.

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1947 PRD Peugeot Mixte

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1947 Peugeot PHL 55 Mixte

But that was before I had any 1947 Peugeot catalogues.  Now, with the the 1947 catalogue newly available, I believe that the bike is indeed a 1947 model. – the PHL 55 model depicted above, and not the other mixte offered in 1947 – the PRD model.

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Many thanks to the BikeBoomPeugeot site for sharing this catalog – this site is a wonderful resource for Peugeot enthusiasts.  The 1947 catalog features many interesting bicycles from the post WWII era after France was liberated and bicycle production in France was once again underway.

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1947 Peugeot chain guard