In My O-Pinion, This Could Be Interesting

Derailleurs are great.

Well, most of the time--for me, anyway.  With the exception of Tosca, my Mercian fixed-gear, my other "fun" bikes have derailleurs on them.  Cyclists have been using them for nearly a century; in that time, derailleur-equipped bikes have gone from having two cogs to eleven on the rear wheel.  (When I first became a dedicated cyclists, five in the rear was normal; six-speed freewheels were new and exotic

I think 8 rear gears is the "sweet spot" where a wide range of gear options intersects with relative durability and un-fussy shifting; 9 gears--which I use--sacrifices a bit of chain life but greater availability of cassettes across a wider selection of gear ratios and price ranges.

Aside from Tosca, I have one other derailleur-less bike:  my commuter/"beater", which has a single-speed freewheel.  Most commuters here in New York don't have to negotiate many, if any, hills.  I myself make one climb of any significance on my way to work in the Bronx.

Now,  if you don't have to ride hills or are very young or strong, a single-speed bike is a great option if you want to do as little maintenance as possible.  If you're really young and strong, or a messenger, (I was all of those.)you might even like a fixed-gear single-speed.  (At times, I have commuted on a fixed-gear and, as I've mentioned in other posts, I've been a messenger.)  But if you're not-so-young or athletic, live in a hilly area or simply want to sweat as little as possible, you might prefer a variable-gear bike.

If you want variable gears but don't want to use derailleur, you only other option--at least, if you live here in the US--is an internally-geared hub.  The most familiar kind is the classic three-speed.  Sturmey-Archer made several models, but by far the most popular (or at least common) was their AW, which came on the Raleigh, Dunelt, Robin Hood and other English bikes.  Shimano, Sachs and a few other companies also made them; the one marketed by SunTour during the 1960's and early '70'd has long been rumored to be a re-badged Sturmey-Archer.

The problems with those hubs are that they don't offer a wide variety of gears, the spacing between gears is less-than-optimal and, with the exception of the old (pre-1975 or thereabouts) Sturmey-Archer models, they tend to wear out quickly.  Moreover, they don't transmit power (turn your pedal strokes into wheel revolutions) very efficently and weigh significantly more than a hub with a cassette or freewheel combined with derailleurs.

Worst of all, if riders neglect (as most do) even the minimal maintenance internally-geared hubs require, they can fall  to the ravages of rain, wind and other elements almost as easily as the exposed parts of a derailleur.

For some time, European commuters and utility cyclists have had another option:  a gear box.  

The German-made Pinion gear box is a standard feature on about 90 different bike models sold in Europe.  It is a rarity in the US, but that could change:  The company is opening an office in Denver in conjunction with Gates, the manufacturer of the Carbon Drive System.

Think of Pinion as an internally-geared hub on your bottom bracket:  The box contains a set of epicyclic gears, like the ones inside the hub, in an oil bath.  But, unlike the hubs, which had oil caps on their shells, Pinion requires an oil change every 10000 km or so.  The good news is that Pinions appear to be more hermetically sealed than internally-geared hubs, so the lubrication is less prone to contamination and, one assumes, runs more smoothly.  

Add caption

The main downside to Pinion is, apart from its weight, the fact that it can be installed only on a Pinion-specific frame. For some, that limitation is counter-balanced by its greatly reduced maintenance, ease of shifting and the fact that it's available in a number of gear configurations, with 6,9,12 or 18 gears in a range from 295 to 636 percent.  This means a wider range of gears, with narrower steps in between, than is possible in an internally-geared hub.  It's also available with a die-cast magnesium gear box, which cuts the weight somewhat, in addition to standard aluminum model.

50 Years Ago This Month: The Dawn Of SunTour

What is the most influential and important development in the history of the bicycle?

Some would say, well, duh, it's the invention of the bicycle. I might agree, except that it's hard to pinpoint when, exactly, the bicycle was "invented".  Is Leonardo da Vinci responsible for it?   Or, do you consider the "celerifere" the first in the line of two-wheeled vehicles we love to ride to day?  Some might say Karl von Drais de Sauerbrun, who attached a steering device to his two-wheeler, is the progenitor of our pleasures.  Then again, others would have us believe that it wasn't really a bicycle until Kirkpatrick MacMillan attached foot pedals to it.

After the invention of the bicycle, however you define it, probably the most important development--and certainly the one most influential beyond the world of cycling--is that of the pneumatic tire.  Without it, not only bicycles, but also motor vehicles, would give slower and bumpier rides than wooden- or metal-wheeled horse-drawn carriages.  And modern passenger aircraft could not take off or land.

Possibly the next-most important development is the invention of the "safety" bicycle.  It's what we (well, most of us, anyway) ride today:  two wheels the same size (or close to it), foot pedals and a front chain that drives a rear cog via a chain.  This type of bicycle replaced the high-wheeler or "penny farthing" bikes, on which the pedals and cranks were attached to the front wheel axle.  The gear ratio was, therefore, dependent on the size of the front wheel:  Common diameters were 60 and 72 inches.  On the "safety" bicycle, variable gears were possible.

Variable gears led to inventors coming up with various ways to use them, the most common of which are variable-gear internal hubs (e.g., the Sturmey-Archer three-speed hubs found on classic English bikes) and derailleurs.

About the latter:  The patent for what is, arguably, the most important innovation in derailleur design was filed fifty years ago this month in Japan, and a month later in the US.

Here we can see it advertised in the December 1964 edition of New Cycling magazine:

It's the SunTour Gran-Prix derailleur, the progenitor of every single derailleur with even the slightest pretense of quality made during the past few decades.


This brainchild of Nobuo Ozaki, SunTour's chief engineer at the time, the SunTour Gran-Prix introduced the "slant parallelogram" design to the world.  The derailleur's main parallelogram is more or less parallel to the chainstay, in contrast to those of Campagnolo and Simplex derailleurs, which dropped straight down from the frame mount and were almost perpendicular to the ground--or those of Huret derailleurs, which consisted of flat steel plates that pivoted on the mounting plate.

Such a difference is not merely stylistic:  It allowed the top pulley of the Grand-Prix to run as close to the smallest cog as it did to the largest, or any in between.  Shifting thus became easier and more precise, especially on wide-range touring gears.  People were amazed at the difference when they replaced their malfunctioning or broken Huret Luxes,  Campagnolo Gran Turismos or Simplex Prestiges with something from SunTour.  I know I was.

Without a way of keeping a constant distance between the derailleur pulley and the rear cogs, it's all but impossible to make any sort of indexed derailleur system work reliably.  Ironically, this fact would lead  Shimano and Campagnolo (and, later, SRAM) to claim supremacy over the market SunTour would dominate from the mid-1970's until the mid-1980s--and, ultimately, to SunTour's demise.

Practically the second SunTour's patent expired in 1984, Campy and Shimano (and Sachs-Huret, which would become part of SRAM) seized upon it.  The following year, Shimano introduced SIS, the first commercially successful indexed derailleur shifting system.  The rear derailleur from that system combined SunTour's slant parallelogram with the spring-loaded top pivot Shimano (as well as Simplex) had already been using in their derailleurs.

Notice that I said SIS was the first commercially-successful indexed derailleur system.  It wasn't the first indexed system:  The idea was tried as far back as the 1930's (the "Funiculo" derailleur on Jacques Schulz bicycles), and in 1969 SunTour introduced an indexed system that, by all accounts, worked well. 

Had SunTour waited a couple more years to market that system, they might have dominated the bicycle components industry even more they did in the 1970s, and they still might be in business today.  However, the "Honor" and GT derailleurs-- refinements of the Grand-Prix--and the "V" series were introduced just as the '70's Bike Boom was starting in North America.  New cyclists (like yours truly) in the New World had no previous brand loyalty, if you will, to any of the established European derailleur makers and were more willing to try something that looked (and, more important, worked) differently.

Interestingly, this led to a reversal of an old dynamic:  A few years later, European cyclists (some, anyway) would take the lead of their American counterparts and start using SunTour (and, later, Shimano) derailleurs and other parts. 

Anyway...After Shimano introduced their indexed system in 1985, other companies--including SunTour and Campagnolo-- panicked and introduced their own systems. Some of us referred to Campy's "Syncros" system as "Stinkros".  SunTour's system shifted a little better, but not as well as Shimano's, which consisted of a more closely-integrated set of components.  Essentially, Shimano designed a whole new system, while SunTour and Campagnolo simply created new indexed shift levers that were supposed to work with derailleurs and freewheels those companies were already making.

What made matters worse was that bike manufacturers, like Schwinn, equipped some of their models with SunTour's indexed shifters but used them with freewheels, chains and cables--some of which weren't even made by SunTour--they already had on hand.  It almost goes without saying that the results ranged from underwhelming to disastrous.

(Also, the fact that Schwinn's reputation was already slipping didn't help to bolster confidence in the components they used on their bikes.  That's my opinion, anyway.)

SunTour finally redesigned their indexed systems, but it was too late.  The company managed to hang on until 1995.  By then, nearly all bikes of any quality had Shimano derailleurs--which had the same geometry as the SunTour derailleurs Nobuo Ozaki created three decades earlier!

(He was, apparently,  much better at industrial design and engineering than anyone in the company was at translating.  One of their early manuals, useful as it is, tells us "How To Use Honor Rightly".)

It Made Our Bikes Possible

We have all had our life-changing moments, for better and worse: the first kiss, finding out that a hero or role model was merely mortal, tasting an unfamiliar food and liking (or disliking) it more than we expected, or doubting something that had always been believed or assumed.

I'm not going to tell you that I've had such a life-changing moment today, or within the past week or month.  But I got to thinking about those revelations or epiphanies or whatever you want to call them in our cycling lives.

Some of us experience such a moment upon riding a bike with dropped bars or a hard leather saddle and discovering it is actually comfortable--or, at least, not as uncomfortable as we expected.  Or it can come when we try a new genre of riding or type of bike:  For example, I never expected to fall in love with fixed-gear riding.  Conversely, some of us might learn that we do not have the time, resources or talent to become the racers we hoped to be--or that age or other changes in our bodies might mandate changes in the way we ride.

And then there are the seemingly-smaller, but nonetheless influential experiences that cause us to see some aspect of our cycling in a different way.

If you came of age during the 1970's (as a cyclist, anyway), one such experience could have come after you'd spent some time riding a typical bike from that era, which came equipped with Huret or Simplex derailleur--or the Campagnolo Valentino or Gran Turismo. Perhaps the derailleur broke, wore out or rusted solid (a common occurrence with Huret derailleurs in rainy climates).  Or you got to ride a friend's bike, or test-ride one in a shop.

Your friend's bike, or the one you test-rode, might have been equipped with the same derailleur your shop mechanic installed (or recommended, if you did your own work) when your Simplex, Huret or Campy died.  That derailleur was the Sun Tour GT--or, later, the VGT.

Sun Tour V-T Luxe Derailleur, ca. 1974.  From Disraeli Gears

To this day, I don't think I've ever ridden any other bike part that seemed so far superior to its counterparts.  Some people have described feeling that way about using an Apple computer after years of working on machines equipped with Microsoft.  Since I haven't used Apple, I can't vouch for its superiority.  However, I can assure you that the difference between Sun Tour derailleurs and anything else made during the 1970's was at least as great.

From what I understand, Apple is influencing changes in the design of other computers and electronic devices and that, in the near future, I might be using something with their imprint whether or not it's my intention.  

In a similar fashion, even though SunTour went out of business around 1995 (though its name is still licensed for bike parts marketed in Europe and other parts of the world), nearly all of us are riding a SunTour derailleur, if you will.  If you're riding any derailleur that clicks when you shift it, the mechanism will have a geometry very similar to, if not exactly the same as, a SunTour V-series (V, VT, V-GT, Vx, Vx-GT) from the 1970's.  Yes, even arch-rival Shimano adopted it for all but its least expensive rear derailleurs.  

In fact, Shimano's first SIS series of integrated derailleurs, shifters, cogs and chains came out in 1985--the year after SunTour's 1964 patent on the slant-parallelogram derailleur expired.  Shimano had made earlier, unsuccessful attempts at creating an indexed ("click-shift") derailleur system.  Turns out, they needed Sun Tour's slant parallelogram to make it work.

Ironically, when SunTour made its own indexed system a couple of years later, it didn't work as well as Shimano's.  The same was true of Campagnolo's first attempt at such a system:  the Synchro, which some of us called the "Stinkro".  SunTour and Campy both made the same mistake:  They simply retro-fitted an indexed ring to shifters they already made and didn't integrate it with the other parts.   

Campagnolo survived its mistake only because its more traditional Record (the Nuovo, Super and C- series) were still widely used in elite pelotons such as those of le Tour, il Giro and la Vuelta.  As good as SunTour's earlier equipment was, it was still almost unknown in those circles and, costing much less than Campy's stuff, didn't have snob appeal.  

People who started riding during the mid-90's or later have probably never heard of SunTour. But that once-proud derailleur maker made the bikes most of them ride possible--and changed our cycling world.

Disraeli Gears

"Campagnolo trying to do mass-market derailleurs was a bit like the British Royal Family trying to do marital fidelity--it was never going to work because, although they knew they should do it, they considered the whole idea inherently beneath them."


So begins Michael Sweatman's page about the Campagnolo Nuovo Valentino extra derailleur on his site Disraeli Gears.  He says it's about half-complete; I almost don't want him to finish it because so many of his entries leave me in eager anticipation of more.  


His pages include his own wry commentaries, as well as photos and technical information, about derailleurs that have been made during the past 80 years or so.  Disraeli Gears is arranged by models, brands, countries and decades, as well as by several of his own themes, such as the ever-popular "A Riot of Colour."


Now I'm going to answer the question some of you are asking:  Yes, Disraeli Gears is named for the Cream album released in November 1967.  According to Ginger Baker, the album got its name when Eric Clapton talked about getting a racing bicycle and Mick Turner said, "Oh yeah--Disraeli Gears."


My guess is that Turner was high when he made that remark.  (For that matter, Clapton and Baker probably were, too.)  I won't speculate on whether or not Sweatman was high when he wrote any of his entries (or whether he ever was).  However, he does reveal one of his food vices in this entry.


Even if all you know about derailleurs is whether or not your bike has one, Disraeli Gears makes for a lot of interesting and entertaining reading.