Showing posts with label Specialites TA. Show all posts
Showing posts with label Specialites TA. Show all posts

28 May 2021

All-Wheel Drive “Fat” Bike

Some of you ride cranksets, chainrings or other components or accessories made by Specialites TA in France.  “TA” stands for “Traction Avant,” or forward drive.  

Before he started making the parts for which the company would be renowned, founder Georges Navet tried to make, and market, a front-wheel drive bicycle.  High-wheel or “penny farthing” bikes had pedals attached to cranks fitted directly to the axle on the front wheel, which was much larger than the rear.

Navet, however, wanted to make a modern bicycle (two wheels of more or less the same size, propelled by a chain-and-sprocket drive) with front-wheel drive after seeing cars with the then-new innovation.  I would not be surprised, then, if some cyclist, especially one who rides off-road, looked at, say, a Subaru Outback (or, perhaps drives one) and wondered, “Why can’t my bike have this?”

“This” would be all-wheel drive. Someone called “The Q” may have been that cyclist.  Check out his attempt to make an all-wheel (OK, two-wheel) drive fat-tire bike:


23 January 2021

Traction, Up Front

 



Specialites TA is known for making high-quality cranks, chainrings, bottle cages and other bike parts and accessories.

Most people refer to the company simply as "TA," without any notion as to what it signifies.*  It never would occur to most people that "TA" is an acronym for "Traction Avant", or front drive.

Specialites TA  founder Georges Navet was, like Tullio Campagnolo, a craftsman with an imagination--what we might call a "tinkerer."  Navet, a joiner/carpenter, was fascinated by a then-new Citroen innovation:  the front-wheel drive automobile.  Why can't we have a bicycle like that?, he wondered.  

Now, if you want to be technical (pun intended), front wheel drive bicycles were not new:  Before the invention of the chain-and-sprocket drive, bicycles were propelled by crams and pedals attached to the front wheel.  That is why front wheels of 1880s high-wheel (“penny farthing”) bikes were usually much larger than rear ones.  Navet, however, wanted to create a front-wheel drive bike on which the gear didn't depend on the size of the wheel.

Sadly for him, none of his traction avant experiments worked.  But in the meantime, derailleurs gained popularity and were finally approved for use in competition.  The real potential, he saw, was in cranksets with multiple chainrings--in aluminum alloy, for light weight--in a wide range of sizes.  A triple crankset greatly expanded the gear range offered by freewheels of the time (just after WWII), which had three or four sprockets ranging in size from 14 to 24 teeth.




(Now you know why those old derailleurs from Campagnolo, Huret and Simplex could wrap up yards and yards, or meters and meters, of chain even if they couldn't handle more than a 24  or 26 tooth rear sprocket:  They were designed to accommodate the gearing available at the time.)

So, in a sense, even though he couldn't realize his vision of a front wheel drive bicycle, Georges Navet achieved another kind of traction avant with his cranksets and chainrings.

*--When I was growing up in Brooklyn, some of the subway cars bore TA logos, for Transit Authority. In the academic world, a “TA” is a teaching assistant:  usually, a grad student who does the work senior tenured profs don’t want to do.  To this day, I associate TA with trains and schools as well as bikes!

01 June 2017

Without Cotters, But Not Cotterless?

The French firm Specialites TA is probably best-known for its Pro Vis 5 crankset, often called the "Cyclotouriste" (though TA itself never used that name). Even if you've never ridden one, you've almost surely seen it:




It may well be the most versatile crank ever made:  The outer chainring, which bolts on to the inner bolt circle (the one closest to the center of the crank), were available in  sizes from 40 to 64 teeth.  The middle and inner rings, which bolted to the outer ring, were available in sizes from 26 to 50.  You could bolt one or two rings to the outer ring--or ride just the outer ring as a single.  So it may well be the only crankset that ever was truly designed to be used as a single, double or triple.  (On Vera, my Mercian mixte, I use a Shimano Deore MT-60 triple crank by substituting a BBG bashguard for the outer chainring.)  

Also, it may be the only crank that spawned as many imitations as the classic Campagnolo Record:  Sugino made a crankset that looked like a TA with a satin rather than a polished finish, and an early Shimano Deore crankset had the same bolt pattern, if a different look--as did the Stronglight 49D, the crank I'd probably choose if I wanted one with the 50.4 mm bolt circle and the option of single, double or triple.

Anyway, from the time it was introduced in 1963, the TA Pro 5 Vis became the crankset most commonly used on custom and other high-end touring bikes, particularly tandems, for about a quarter of a century.  Even early mountain bikes sported these cranks because they offered such a wide range of gearing--and, in spite of their appearance, were actually all but unbreakable.

Before Specialites TA introduced the Pro 5 Vis (five-bolt professional), the company produced chainrings used on cranks by other manufacturers.  Founder Georges Navet--who started out with ill-fated front-wheel drive experiments (hence the name:  TA stands for traction avant) wanted to produce a crankset to rival the best ones made by Campagnolo and Stronglight.  




Although Stronglight had been making cotterless cranks--fitted to the familiar square-taper  bottom bracket axle, which they originated--since the 1930s, some were still skeptical about the design.  Track racers were still using cottered cranks into the 1960s and some tourists still feared being stranded somewhere because the local garage or machine shop didn't have the right tools.  Other cyclists simply didn't want to change.




So, Monsieur Navet came up with a crankset that has the same arm and chainring bolt pattern we see on the Pro 5 Vis.  Unlike the Pro 5 Vis, this crankset--called the Criterium--was not cotterless.  So, in following the logic of cycle componentry from that time, you might say it was a "cottered" crank.  And you would be right--sort of.





If you didn't look closely, you might mistake them for cotterless cranks--which they are, sort of.


Specialites TA Criterium cranks with Spence Wolf-modified Campagnolo Nuovo Record rear derailleur, 1969.  From Velo Vecchio.


OK, you ask...What are they?  Well, the cranks were held to the axle by a bolt with an allen key head on one end, and a nut that threaded on to the other end.  That made the "cotters"--and the cranks easier to remove than those of traditional cottered cranks, and didn't require a special extractor, as cotterless cranks require.

An engineer once told me that the bolt holding the Criterium crank to its axle is technically not a "cotter", but rather a "pinch bolt."  The reason, he said, is that the traditional cotter has a wedge cut-out that is force-fit (usually by hammering) onto an axle with a flat spot.  The force--or stress, if you will--is what holds the crank to the axle.  On the other hand, the bolt in the Competition bore no such stress, and it merely holds the arm in place on the nearly pear-shaped axle end. 

The "not-cottered-but-not-cotterless" design had its advantages, in addition to not requiring special tools.  For one, the bolts were less prone to breaking or stripping than traditional cotter pins.  For another, it allowed 4mm of lateral movement in either direction on the axle.  That allowed the crank to be positioned for the best possible chainline.


One further advantage was that the design allowed the cranks to be made from aluminum.  A few companies made aluminum cottered cranks, but nearly all of them broke outright or ended up so gouged that the cotter pins could no longer hold them on to the bottom bracket axle.  But, because the Criterium's pinch bolt did not need hammer-blow forces to attach them, and because the shape of the axle and the way the bolts fitted into the crank provided an inherently more secure attachment, there was little to no danger of breaking or gouging the cranks.

What that meant was that the Criterium was, at the time it was introduced, the lightest crankset on the market.  It weighed even less than the alloy cranksets from Stronglight and Campagnolo because the Criterium's design allowed it to be made with skinny arms, like cottered cranks, and thinner around the axle interface.  it almost goes without saying that the Criterium was lighter, by far, than any other crankset because most--besides the aluminum cotterless sets made by Campy, Stronglight and a few other companies--were made of steel.


Cinelli Super Corsa with the drivetrain shown in the above photograph.  Also from Velo Vecchio.


The Criteriums were, like most Specialites TA products, meticulously made and beautifully finished.  Spence Wolf, the owner of Cupertino Bike Shop (one of the first in the US to devote itself to high-end bikes), equipped a few of the Cinellis and some of the Alex Singer bikes he sold with these cranks when the customer wanted wide-range gearing.  He would pair the Criteriums with a Campagnolo Record rear derailleur he modified with a long pulley cage he made for it.




But Specialites TA didn't make Criteriums for very long.  They introduced the Pro 5 Vis only a couple of years after the Criterium and, by that time, most dedicated, high-mileage cyclists--even track racers and tourists venturing into remote areas--were convinced that cotterless cranks were indeed a superior design.  To use a cliche, the rest is history.

Note:  I have seen only one of these cranks in person, on a bike I tuned up when I was working at the Highland Park Cyclery.  The bike had no markings on it, but the customer said it was "built in France".  I don't think it was a constructeur bike, but it looked fairly high-end.

11 March 2017

A Water Bottle Cage Decaleur? From Specialites TA?

I know I'm working on a project--or doing my usual late-winter/early- spring maintenance and overhauls--when I'm spending way too much time on eBay.

That's when I start to find all sorts of weird and interesting stuff. To wit:



The seller, in Austria, says it's a French-made, possibly by Specialites TA. I couldn't find any reference to it in TA brochures or catalogues I've located on-line. Given that the cage is French, and looks interesting and well-made, it's easy to understand why the seller might think it's from TA.



The shape of it is echoed, at least somewhat, in the beautiful Nitto R cage.  But the Nitto cage is not made to be used with clamps. Perhaps the cage I saw on eBay isn't, either. That leads me to wonder whether whoever made the cage also made the mechanism that attaches it to the clamps--and, according to the seller, allows it to be easily removed from the clamps.  Or was it made by whoever bought the cage and installed it on his or her bike?




Hmm...Were water-bottle cages being lifted from parked bikes?  I can't think of another reason for a mechanism like that. A decaleur for water bottle cages?  What a concept!

10 February 2017

You're Definitely Not Square If You Use This Cage!

If you were riding before the 1990s, chances are that you used a water bottle cage that looked something like this:




You might still be carrying your libations in such a cage.  There's no reason why you shouldn't.  That you and other cyclists are still riding with such cages is a testimony to their design.

If you have been riding with such a cage for so long, you probably know its design was based on this:


Specialites TA Ref 215



Made by Specialites TA of France, it holds a distinction very few bicycle accessories--and only a few components--can claim:  It was the choice of racers, tourists, "rough stuff" and recreational riders alike.  Whether you pedaled your Cinelli in the peloton, your Herse over the hills or your Mercian through the moors, you used the TA Ref. 215 cage--or, later, the alloy 417. (The 215 was made from chromed steel.)  


Ref. 213


For a time, TA's Ref. 213 cage was also popular until handlebar-mounted cages fell out of favor.  And, in the 1970s, the single-clamp 216 became popular with cyclists whose frames didn't include brazed-on bosses for bottle cages.

Ref 216




I thought I knew the Specialties TA line well.  (After all, when you get to be my age, and cycle for as long as I've been riding, there are times when you think you've seen it all!)  But, in hunting for small parts and accessories for the Trek I'm building, I came across this:


Ref. 218

I have to admit that I have never seen one in person.  I tried to find more information about it, but all I could find was a listing on the Blackbird website.

The eBay listing describes the cage--Ref 218-- as having "an unusual rectangular shape."  Apparently, it was made to fit the Ref. 220 and 222 "randonneur" water bottles, which look like old-fashioned milk bottles rendered in blue anodized aluminum rather than glass. 



Ref. 222 (1 liter; Ref 220 was the .75 liter version)

Someone--Fred "Fritz" Kuhn of Kopp's Cycles, I believe--told me that TA stopped making aluminum bottles because they would oxidize on the inside and poison their users.  I wonder, though, what it was like to use bottles in that shape.  How easy or difficult were they to pull out, or push back in, the cage?

The seller says that modern Fiji water bottles fit into those cages nicely.  I'll take his/her word, though I generally don't buy Fiji, or any other water transported from the ends of the Earth.   I feel certain, however, that the 218 is bomb-proof, as all of the other TA cages were!

12 December 2014

Paint...I Mean, Anodize...It Black



To many bicycle enthusiasts, “classic” components come in a spectrum of colors ranging from silver mist to gleaming chrome.  Some purists—or pedants who fancy themselves as such—believe that all components worth using are polished, preferably to a mirror finish.  Cranksets like the Stronglight 93, 63 and 49, Specialites TA Pro Vis (a.k.a. Cyclotouriste) or Nervar Star are among the preferred components of those with such aesthetic preferences.  So do Maxicar hubs, Huret Jubilee derailleurs and old-style 3TTT bars and stems.  

Stronglight 93 crankset in its natural habitat:  on a Peugeot PX-10.

 They’re all lovely pieces and perfectly valid on modern as well as classic bikes.  And, oh, yes, Campagnolo Gran Sport and Record stuff made until 1985 or so.  They had a more buffed finish but took on a nice sheen that looked great on just about any bike, especially a silver Cinelli.

Huret Jubilee in its natural habitat:  a Rene Herse
 


But not all components made before the lava field of carbon fiber oozed across, and blanketed, the cycling landscape looked like they were chromed or polished so that you could use them for shaving or putting on your makeup.  A couple of years before I started taking rides of more than a few miles—a year or two after the ‘70’s Bike Boom ended—a cult of sorts developed around black anodized parts.  

Original Campagnolo Super Record rear derailleur, circa 1974




It seems to have started when, in the middle of the decade, Campagnolo introduced its Super Record line.  It was identical to the Record line (which included the Nuovo Record rear derailleur) but included titanium bolts and bottom bracket and pedal axles.  And, to distinguish it visually from the Record line, the knuckles of the rear derailleur were anodized black.  So were the pedal cages and chainrings.  


(The hubs and brakes were the same as those in the Record line.  The brake levers had drilled-out handles and, ironically, weighed two grams (!) more than the non-drilled levers.  Apparently, the handles were made of thicker metal to compensate for the drilling.)

Sugino Mighty crankset, circa 1975



Maillard 700 pedals.  Don't you just love rhe red dust caps?



Once Campagnolo introduced its Super Record components, other companies got onto the black-anodized bandwagon.  Stronglight, Shimano, Sugino and other chainrings were available in noir versions.  Lyotard, Maillard, Mikashima (MKS) and Kyokuto (KKT)—the leading pedal makers, along with Campagnolo, at that time—offered black-caged and all-black versions of their products.  And, once 3TTT and Cinelli started selling black handlebars and stems, Phillipe and Pivo of France as well as Nitto and Sakae Ringyo of Japan followed suit.

SunTour Cyclone rear derailleur, circa 1975



SunTour and Shimano, naturally, offered several models of their derailleurs with black knuckles, like Campagnolo, or all-black versions.  I think the SunTour Cyclone silver rear derailleur with black accents is the prettiest shifting mechanism, besides the Huret Jubilee, ever made.  

Shimano Dura Ace hub, circa 1976



And Shimano went as far as to offer all-black versions of its Dura Ace components.  I think their hubs, with bright silver oil hole covers and axle nuts, looked particularly nice.  Their silver crankset with black rings was also nice.

Original Jim Blackburn rack on a Dawes Galaxy:  verrry '70's!



When those black components—and Jim Blackburn racks and water bottle cages—found their way to the market, I—like most novitiate cyclists of the time—had never seen anything like them before.  But a very few longtime riders—like Fred DeLong, the long-serving technical editor of Bicycling! Magazine—had seen an earlier fad for black anodized components in the years before World War II.  DeLong mentioned it in one of his columns.  And he—or some other bicycle writer of the time—mentioned a still-earlier time, around the turn from the 19th to the 20th Century, when black parts were all the rage.



The mid-70s mini-craze for black parts lasted a few years.  Then, most component makers quietly dropped them.  About a decade later, black chainrings and, later, other parts, started to appear on mountain bikes.  Road bikes reverted to the polished- (or buffed-) silver look in parts.  That wasn’t all bad, especially if said components were from SunTour’s Superbe Pro line.


SunTour Superbe Pro track hub





That aesthetic—and SunTour itself—disappeared around the time carbon-fiber bikes and parts reached the mass market.   The past few years, though, have seen something of a resurgence of shiny silver stuff as cyclists (mainly non-racers) are discovering (or re-discovering) the versatility, durability, beauty and ride quality of classic steel frames, or modern frames inspired by them.