Showing posts with label SunTour V. Show all posts
Showing posts with label SunTour V. Show all posts

17 October 2018

Holy V, Jubilee!

In October 1964, Tetsuo Maeda filed a patent application in Japan for what would become, in my opinion, one of the two or three most important derailleur innovations in history.

It was the brainchild of his chief designer, Nobui Ozaki.  He was no doubt trying to make a derailleur that was easier to shift and shifted more accurately than the ones available at that time.  Did he realize that it would influence derailleur design for the next half-century?  Did Maeda, the owner of the company that employed Ozaki, know that for two decades, other derailleur manufacturers would wait, with bated breath, for his patent to run out?

Well, both of those scenarios came true.  You see, the patent Maeda filed in his home country--and a month later in the US--would cover a design still used today, in one form or another, on any rear derailleur that has even a pretense of quality.




I am talking about the SunTour Gran-Prix.  Over the next few years, SunTour would refine its design.  For one thing, it would replace its original single-spring design (The same spring that operates the parallelogram also tensions the chain cage.) with separate springs for each function.  And steel parts would be replaced by alloy ones, which in turn would become more sculpted and rounded.

The result was that the 1964 Gran Prix



would evolve into the first "V" derailleur in 1968.

I would put one of those on one of my bikes.  I mean, how can you not love a derailleur with those pivot bolts?

Of course, the V was further refined and became the V Luxe.  One thing I find interesting about the V and V Luxe is that they were lighter than most derailleurs made at the time--or even today.  

The V, according to Michael Sweatman of Disrealigears, weighed 218 grams.  That is only 13 grams (less than half an ounce) more than another influential derailleur that came out exactly 50 years ago



yes, the Campagnolo Nuovo Record--which, of course,was a refinement of the earlier Record and its progenitor, the first Gran Sport parallelogram rear derailleur.

For comparison's sake, the 1968 SunTour V weighs almost exactly the same as a Shimano Ultegra 6400 (introduced in 1988), 6401 (1992) or 6500 (1998)--or the Dura Ace 7402 (made from 1989 to 1996), all of which are in the 210 to 220 gram range. Later DA rear derailleurs (the 7700 series onward) shed 10 to 15 grams--and that with the use of a titanium upper pivot bolts!

The funny thing is that no matter how light a component is, someone wants it even lighter.  So I guess I shouldn't have been surprised to find this



I mean, how much weight did those holes take out of that "V" derailleur? 

I guess I shouldn't be too critical, though.  After all, not only was the Campy NR drilled out--or, sometimes, slotted in its parallelogram--so was the lightest rear derailleur of them all:



In case you were wondering:  The Huret Jubilee weighed 145 grams--before anyone touched it with a drill, mill or lathe!


04 March 2016

Campagnolo Adapted Japanese Design; The Public Didn't Rally Around It

In an earlier post, I said that SunTour's invention of the slant parallelogram is one of the most important innovations in the history of cycling.  Just about any derailleur made today that has even a pretense of quality has incorporated the design, which was patented in 1964.  In the early '80's, you could practically hear other derailleur makers panting with anticipation of the day that SunTour's patent would expire, in 1984.  Within a year, Shimano was using the design in its new line of Dura-Ace derailleurs for indexed shifting.  Within another three years, all of Shimano's derailleurs would share their geometries with those of the SunTour VGT and Cyclone.  By the end of the decade, the other major derailleur manufacturers of the era--Campagnolo, Huret and Simplex--would also "borrow" the design as they tried desperately to reclaim the market share Shimano gulped down.

A sad irony  is that after all of those companies adopted the slant-parallelogram, SunTour tried to create an indexed ("click shift") system to compete with the Shimano juggernaut--two decades after SunTour developed an indexed system (and a cassette freehub) that, by all accounts, worked well but for which the world wasn't ready.  Sun Tour's new indexed system, which came out in 1987, didn't work nearly as well as Shimano's because SunTour didn't develop a freewheel or cassette--or a chain--that worked properly with their new derailleurs and shift levers.  Campagnolo made the same mistake with its "Syncro" (which some of us called "Stinkro") setup, in which indexed derailleurs sent stolid Regina chains clattering across imprecisely-cut teeth of Regina freewheels and chains.  Also, its first "Syncro" system used a modified version of its traditional dropped-parallelogram derailleur, which didn't adjust the distance between the top pulley wheel and the freewheel cog--vital for indexed shifting performance--as well as Shimano's new slant-parallelogram derailleurs with sprung top and bottom pivots.

Campagnolo Gran Turismo, circa 1971.  Don't you just love those red bolts? Unfortunately, they're the best thing about the derailleur.  Well, all right:  It was good for driving in tent pegs. I know, I did it.  From Speedplay.





I suspect that one reason why Campagnolo tried, in essence, to make their traditional derailleur design work with an indexed lever (which looked at least something like other Campagnolo levers of the time) had something to do with their experience with their Rally derailleur of a decade earlier.

SunTour VGT-Luxe, circa 1973.  From Disraeligears


Before SunTour came out with their slant parallelogram rear derailleur, most wide-range gearing systems--like the ones found touring bikes--didn't shift quickly or precisely.   After SunTour's Grand Prix, Competition and V-series derailleurs entered the market--at the dawn of the North American Bike Boom--Shimano, which was a very minor player in the bicycle components market, wanted to compete.  They couldn't copy SunTour's design for another two decades, so they found ways to modify Simplex and Huret's designs.  The result was something called the "servo pantograph", in which the parallelogram dropped at least somewhat (like Simplex) and the top pivot was sprung (Huret).  The resulting derailleurs--which would become the long-armed Crane and Titlist--shifted reasonably well over wide ranges--better, at least, than the European wide-range derailleurs but not as well as SunTour's.

Shimano Crane GS, circa 1972.  From Disraeligears,


Even so, the Shimano Crane and even the Titlist were seen as "better" derailleurs than the SunTour V and V-GT because they were more expensive and, to some eyes, more attractive.  That might be the reason why Campagnolo modeled the first edition of its "Rally" touring derailleur on the long-caged version of the Crane. 

Campagnolo Rally, circa 1975


I actually used one of those early Rally derailleurs for a time.  Once it was broken in (its parallelogram pivots had bronze bushings like the "Record" series derailleurs), it shifted about as well as a Crane--for about double to triple the price.

But certain segments of the European--particularly Italian--cycling community were not happy:  Up to then, the Japanese copied (with notable exceptions like SunTour derailleurs) European designs.  The reverse wasn't supposed to happen, or so they believed. 

Some of those who were upset that Campagnolo was making a "Japanese" derailleur (or, as one unfounded rumor had it, that a Japanese company was making it for Campy) felt vindicated when Rally derailleurs snapped in two at the "neck" just below the top pivot bolt.  Some Cranes and Titlists of the same era failed in the same way.  So, the Campagnolo birthers, if you will, believed that the design of the derailleur--which was Japanese--was to blame.

The second generation of Rally derailleurs addressed the problem by beefing up the "neck."  There were very few reported failures.  Then again, not many second-generation Rally derailleurs were sold.  Some who wanted all-Campagnolo touring bikes actually went back to using the Gran Turismo derailleur, which Frank Berto very aptly dubbed "Campy's Edsel".  Others--mainly in the US, and to a lesser extent in the UK--decided that maybe it wasn't such a bad idea to equip their otherwise all-Campy bikes with a SunTour rear derailleur, which shifted much better, and lasted longer, than the GT or Rally-- at a fraction of the price.



Third-generation Rally derailleur, circa 1980



Although Campy's heart was always in racing, it didn't want to lose the high-end touring market.  So, some time around 1977, the Rally was redesigned.  Essentially, it had the same parallelogram as the Nuovo Record, but a longer cage.  Ironically, it mimicked a "hack" that many custom touring bike builders, particularly in England, devised:  They used to make long pulley cages to fit onto Campagnolo parallelograms.  In one way, it makes sense when you realize that the Nuovo Record was sturdier than almost anything else available (especially before SunTour came along) and mechanically simple:  an advantage when one is away from civilization!  Still, it didn't shift nearly as quickly or crisply as even the least-expensive SunTour derailleur, especially with bar-end shifters.

But at least it still pleased the blowhards purists.  And it would be another decade before Campagnolo "borrowed" a Japanese design again.  By then, Campy was desperate and the public was ready.


Spence Wolf grafted a home-made long cage onto this Campagnolo Record derailleur in the 1960's/