A 1940’s/50’s Mercier Meca Dural

2015-12-31 002

This French Mercier bicycle has captured my attention.  It is made from duralumin – the same stuff blimps were made with – by Meca Dural using a unique procedure to join the tubes with aluminum lugs and wedged steel internal expanders.  The Meca Dural company produced aluminum frames from the 1930’s through the 1950’s on behalf of a number of cycling manufacturers, Mercier being one of them.  A Mercier Meca Dural is included in the Embacher collection (which was sold in its entirety at auction, earlier this year).  The blackbirdsf site also has photos of a variety of duralumin frames of various manufacturers, including Aviac and Barra, as well as Meca Dural.

2015-12-31 009

This Mercier Meca Dural is a “ladies” bike with a step through frame, although it is not a mixte frame as it lacks the set of extra chain stays typically used to stiffen the frame.  Depending on many factors, this may or may not be a good thing.

The bike features a Stronglight crankset with 46 teeth, CLB 700 brakes with useful and ingenious quick release mechanism, Atom hubs, Samir Saminox 700c rims, Huret plunger/pushrod derailleur, a 4 speed freewheel, and a serial number on the left side rear drop out – 16822.  Here are some photos of the components:

2015-12-31 014

Huret derailleur with plunger/pull chain mechanism – for 4 speed freewheel.

2015-12-31 012

Stronglight 49D crankset

2015-12-31 010

Tank pedals

2015-12-31 008

Atom hub with Huret wingnuts

2015-12-31 006

Very nice CLB 700 brakes

2015-12-31 004

Mercier headbadge, with upper round Meca Dural headbadge missing

2015-12-31 003

Crankset lettering – Louis Verot chainring with 46 teeth, bottom bracket connector bolt

2015-12-31 001

Rear drop out with SN 16822

2015-12-17 008(1)

Beautiful lug design which includes cable routing braze-ons

2015-12-17 011(1)

Ideale Leather Saddle, Model 80

2015-12-17 014(1)

Alloy porteur bars, CLB Guidonnet levers, Sufficit grips, Luxor headlamp, Dural Azur stem

2015-12-17 028(1)

Luxor 65 headlamp

2015-12-17 031(1)

Samir Saminox 700c steel rims

2015-12-17 024

Bottom bracket lug, joined below with bolts

2015-12-17 010(1)

Hammered Le Martele Lefol fenders, hammered rear lamp.

Mercier fork

Steel fork with lugged chrome fork crown, amateur paint job, Stronglight headset

The bike has a number of issues which will affect the restoration process.  The steel fork was horrifically spray painted gray  – so the paint will need to be removed.  Upon closer examination, I have concluded that the wheels are not original to the frame.  There is a 1975 date code on the Atom hub, and not only that, their diameter suggests that this bike was built for 650b wheels and not 700c – the fork crown and rear brake bridge daruma bolts foul the 700c tires.  Clearly the bike was built for 650b wheels, which I confirmed after measuring the CLB 700 brake reach.  And, some features are missing –  the fenders show that the bike originally had a rear and front rack, and the fork mount dynamo is absent, as well as the original chain guard.

Even so, I am looking forward to restoring this machine and to its first test ride, as I want to experience the feel of the aluminum frame and steel lugs, and to judge the frame stiffness for myself.  Stay tuned!

Are we dating?

2015-09-06 016

Dunlop Le Pneu 700A tire with “290” code

One of the things I enjoy about working on vintage bicycles is the sleuthing necessary to determine a bike’s provenance, and the thrill of discovery when all the clues come together.

2015-09-06 013

2015-09-06 011

Griffon steerer tube with builder’s mark plus a “9” code

2015-09-06 004

Griffon bottom bracket cup with “9” code

2015-09-06 012

Griffon wheel axle with “9” code. Note the felt seals enclosed in steel covers. 

While disassembling and cleaning the components of the 1920’s Griffon I am restoring, I kept finding the number 9 (or could it be a 6?) on various components – the steerer tube, front and rear axles, and bottom bracket cups.  I also noted that the Dunlop Le Pneu tires had small numeric codes on each tire – 290 and 295.

Meanwhile, I have been researching the history of the Griffon Bicycle Company, and found references to their absorption into Peugeot in 1928.

2015-08-06 005

Peugeot freewheel and fixed cog

When I removed the rear wheel I was elated to see this astoundingly pristine Peugeot freewheel, and its fixed cog counterpart for the fixed/free gearing on this beautiful old Griffon.  The freewheel has a small oil port with hinged cover, and with some cleaning and lubrication, the freewheel spins smoothly and sounds great.

Based on this evidence, I suspected that this was a 1929 machine.  But, I wasn’t completely convinced of my conclusion, so I continued with my research.

henri gauthier saddle 1920's catalog

1920’s Henri Gauthier Catalog

2015-09-06 010

CCS Seatpost clamp, closed top steel seatpost

2015-05-05 020

Henri Gauthier Glorieuse Model 76 Saddle

The bike’s Henri Gauthier Glorieuse Model 76 saddle was in such great condition that I questioned whether it was original to the bike.  However, I discovered this 1920’s catalog on the French Ancien Velos Lyonnais website.  This doesn’t mean that this saddle wasn’t manufactured for years hence, but, it does help to build my case that this is a 1929 bicycle.

The steel seatpost is well machined and is closed at the top.  The steel seatpost clamp is labeled “CCS”.  Both are of higher quality than similar seatposts and clamps of later eras.

2015-09-06 006

The size of the bottom bracket shell provides more clues.  It is 70 mm wide, with a 46.6 diameter. French shells are typically 68 mm wide, even those from the 1940’s on.

Also, you can see the pin in one of the tubes – showing the method of brazing.  In the early days of frame brazing, bicycle tubes were pinned, rather than tacking the lugs with brazing material, before heating and brazing.  This technique is actually still used by Mercian and possibly some other frame builders who use brick hearths to heat the frames before brazing.  This technique helps to eliminate the possibility of overheating the main tubes.  It was nice to see the bottom bracket looking free of rust, with all the threads in good shape.  For a bike that is almost 90 years old, that is amazing.

2015-05-05 002

So, most of my evidence indicates this is a 1929 Griffon.  But, I’ll keep an open mind as I continue the restoration work on this great old bicycle.

1953 French Mystery Mixte Out on the Road

2015-08-08 007

I decided to take the 1953 French Mystery Mixte out for its first test ride today.  I headed over to Sellwood so I could start the Springwater trail from Sellwood Park, and avoid downtown traffic.  This year, Summer riding in Portland has been a mixed bag.  It has been easy to be beckoned by the dry weather, but the recent heat waves and high humidity have made it challenging to enjoy even my regular commute.  Although cool and breezy, today was more humid than I expected, so my single water bottle turned out to be inadequate.

I was anxious to see how the Challenge Strada Bianca tubular tires felt.  I even wondered if somehow the ride would be transformed by the legendary smoothness and purported supple sidewalls of tubular tires.  I was brought back to reality worrying that I might get a flat.  But, one upside to tubular tires is not having to carry a spare tube, patches, or tire irons.  I can’t imagine what it was like to actually have to carry an entire spare tire (or two, plus glue and a sewing kit).  So, I didn’t even bother with a pump, and just stuffed a few tools and my cell phone into a tiny seat bag.

As I got underway, I felt like I was riding an e-bike. Wait. The bike is long and tall, and  I was in a fairly upright position with the city style bars.  Yet I was positively rolling!  Could it be the tubular tires?  Well, it turned out to be a tailwind, which I discovered when I reversed direction to head back to my starting point on the trail.

After this moment of elation, I concentrated on what the bike was telling me as I sped along, passing nearly everyone:  responsive frame, comfortable saddle, smooth-as-glass hubs, easy shifting, and no lateral flex (thanks to the twin sloping top tubes of this mixte frame).  The tires felt fast, yet more comfortable than similar 30mm width tires that I have ridden, and handled the brief time I spent on hard packed dirt when I took a detour with no mishaps.

2015-08-08 005

The gearing is very high, and even moderate hills required a standing position to maintain cadence.  I ended up not using the highest gear, and rode the bike as a three speed.  Fortunately, the Simplex Tour de France derailleur can handle up to a 24 tooth cog, which means that the gearing could be lowered from its current 59-83 gear inch range, down to a low gear of 52.  That would help make this bike more versatile.  Even so, hill climbing will remain challenging.

A tubular tire oddity is that they lose pressure very quickly.  They will lose several pounds overnight, and a lot of air after a week.  That’s one reason you’ll see bikes with tubular tires kept elevated, so that no flat spots or creases develop in the sidewalls.  For this outing, I had inflated the tires the night before with about 85 lbs in the rear tire and 75 lbs in the front, but as I was riding I felt sure that I had lost pressure especially in the rear tire.  In the future I will plan to inflate the tires before each ride – which is a good practice anyway.

2015-08-08 0022015-07-22 002

I enjoyed using the old Lyotard Marcel Berthet pedals with their original clips and straps.  I hadn’t rebuilt them yet, and even so they performed just fine for this short trip, and were easy to get my shoe in and out of.

2015-07-22 010

The narrow braking surface of the Clement rims is imprinted with a pattern, theoretically to improve braking.  In practice, the rims emitted a high pitched whining sound whenever the brakes were applied.  While the noise did alert others to my presence, I want to find a way to make braking silent, so will be experimenting with some different brake pads.  I also still have friction in the rear brake cable, which I need to troubleshoot.

2015-08-08 004

1953 French Mixte at Tilikum Crossing

1972 Mercian

1972 Mercian

Yesterday, I had taken the 1972 Mercian out for a spin, so it was interesting comparing the riding experience of these two different bicycles.  The Mercian is a classic 1970’s road bike, using 700c tires on a small frame which happens to fit me perfectly.  It has a 100cm wheelbase, but similar (and higher than I prefer) wheel flop and trail numbers (wheel flop 17 and trail 59).  I was not disappointed in the handling of the mixte.  I did not have any trouble maneuvering at slow speeds, whereas the Mercian does exhibit the unwieldy feel of a high wheel flop bike when riding at slow speeds. The long 109cm wheelbase helps to keep the bike feeling more stable than it otherwise would. Both bikes are comfortable yet performance oriented, and versatile enough for any kind of riding, with the right gearing.  Neither bike has rack mounts, but both have fender eyelets.  With a saddlebag support, either bike could be put into daily service as a commuter, and the Mixte’s high gearing and light 22 lb weight could allow it to do double duty as a training bike.

2015-07-22 023

The city style bars have flush mounted levers, which although stylish-looking, means that the only way to adjust the position of the levers, is to adjust the handlebars.  My wrists and hands were uncomfortable after a while, because they were not in a neutral position, so I’ll be making adjustments to the bars as well as completing a few other minor tweaks.

The bike’s first ride left me impressed.  Riding it today reminded me again of how well the cycling industry had developed by the end of WWII.  Its high end components and beautiful Oscar Egg lugs translate into a well-appointed, lightweight bicycle that is perfectly competent and comfortable to ride. I am looking forward to riding it again.