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What was on this Meca Dural Duralumin bike?

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What was on this Meca Dural Duralumin bike?

Old 07-09-24, 02:09 AM
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What was on this Meca Dural Duralumin bike?

I found this Meca dural Duralumin bike in a barn. Its drivetrain is incomplete. I would like to know what derailleur (and shifter) it had. My knowledge of 80-year-old derailleurs is very limited. What I know about the bike is the following: It is a Meca dural Duralumin bike. From what I have seen on the internet, it must be from somewhere between the 1930s and 1950s. It is located in France and it had Ballon Dural Lam Déposé brakes. The saddle is from Lamplugh. It has some kind of derailleur hanger with two holes and it has 3 sprockets. The shifter mount is on the top tube. Who knows what is missing?
I have foto's but i could not upload them

Last edited by Duraluminbike; 07-09-24 at 02:21 AM.
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Old 07-09-24, 04:25 AM
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Pic assist,



Gallery,
https://www.bikeforums.net/g/album/34637091
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Old 07-09-24, 08:31 AM
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fork crown NERVEX pattern Nr. 2

chainset something very fine such as Acier Diamant (for example)

hollow spindle bottom bracket assembly may be the Verot Nr. 34

tip: fixed cup appears octagonal, this could mean CH thread

pedals are Lyotard model Nr. 36bis

handgrips are FELT of Grenoble

there are no shortage of discussion threads on these machines over at the Tonton forum, you should be able to find one from this time which is complete to answer your kitting queries

remember to check as well under the name F. Pelissier to see more examples -





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Last edited by juvela; 07-09-24 at 01:37 PM. Reason: addition
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Old 07-09-24, 08:42 AM
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@juvela

Would the top tube shifters bosses date the frame? Is that a time specific thing?
I've certainly seen '70s Era bikes with single post clamp on shifters but not many with braze on.
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Old 07-09-24, 08:55 AM
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shift lever boss is a special one made for fitment to aluminum tube, unlikely to find in catalogue for example

these cycles exhibit numerous special small bits due to the dural tubing


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Last edited by juvela; 07-09-24 at 08:58 AM. Reason: addition
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Old 07-09-24, 10:32 AM
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Here's a link to an article that may help. Vintage Bike of the Week : Meca Dural Duralumin - Pedal Pedlar



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Old 07-09-24, 01:33 PM
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Originally Posted by cb400bill
Here's a link to an article that may help. Vintage Bike of the Week : Meca Dural Duralumin - Pedal Pedlar

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wonderful job on finding this!

from what recall of Tonton threads on these which have read Lucien was the usual supplier of gear kit to the manufacturer


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Old 07-10-24, 10:00 AM
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Thank you for all the new information. It took some time to proces it all. In the link that was send the derailleur on the bike was a four speed. So this then can not be the good derailleur, right? It looks like the derailleur on my bike has a monobloc hanger just like the other bike. So is there a a simplex rear derailleur for 3 speed with a monobloc hanger from the 1930s to 1950s?
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Old 07-10-24, 01:49 PM
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suspect gear hanger to be special for aluminum frame

doubt it would be one you would see in a Juy catalogue

EDIT: my error. was over at Tonton searching for something else when came acros this unknown and undated steel bercerau with the same tab and placement as that of the subject cycle -




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Last edited by juvela; 07-14-24 at 05:58 PM. Reason: addition
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