Showing posts with label Nivex rear derailleur. Show all posts
Showing posts with label Nivex rear derailleur. Show all posts

24 February 2015

Campagnolo Gran Sport And The Records

The other day, I wrote about the Nivex rear derailleur.  In my post, I mentioned the derailleur that foreclosed Nivex's future: the Campagnolo Gran Sport.

The first GS derailleur looked somewhat like every racing derailleur Campagnolo would make for the next four decades.  Debuted at the 1949 Salon de Milan (That name has a nice ring, doesn't it?), a.k.a., the Milan Bicycle Show, the original Gran Sport had, in embryonic form, the dropped parallelogram we would see on all of Campy's racing derailleurs until the late 1980's.  However, that mechanism had no return spring and was operated by a "double" cable--actually, a cable that looped through the body in the same manner as it did in most French derailleurs of the time.  






No one seems to know whether anything more than a prototype of this derailleur was ever made.  However, a year later, the "double" cable was replaced with a single cable that moves the parallelogram outward or inward, depending on the direction of the shift.  If it wasn't  not the first derailleur to employ such a system, it's almost certainly the first such derailleur to be widely used by racers.  


Main Photo
1951 Gran Sport


 Tullio Campagnolo made various refinements to the derailleur over its manufacturing run, which ended in 1963.  It represented a great improvement in shifting ease over the rod-actuated derailleurs Campagnolo and other companies made before the Gran Sport and the plunger-actuated derailleurs made by Simplex and other companies.  The GS was also mechanically simpler:  no small consideration in races over pockmarked postwar roads and teams with limited budgets.


First generation Record, 1963



The Record, introduced in 1963, looked all but identical to the last version of the Gran Sport.  However, the pulley cage was moved slightly forward and upward in relation to the jockey pulley.  This refinement widened the range of the derailleur and improved the shifting ease somewhat. 



Campagnolo Nuovo Record derailleurs
Campagnolo Nuovo Record




Four years after that, one of the most iconic derailleurs of all time--the Campagnolo Nuovo Record--would first see the light of day.  While it didn't offer much technical refinement over the Record, it looked far more refined, in its polished cold-forged aluminum (in contrast to the chrome-plated brass and steel of the Record and Gran Sport).  Campagnolo would make the Nuovo Record--and it would be the most common derailleur in the peloton--until 1985.  A further refinement of the Nuovo Record--the Super Record--would appear in 1974.  As popular as it was, it did not displace the Nuovo Record, with both derailleurs ending their runs at the same time.



Later version  Super Record



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Note:  I would like to acknowledge The Retrogrouch, Bicycle Quarterly, Classic Rendezvous, Disraeli Gears, Velo Base, Classic LIghtweights UK and old Campagnolo literature for the information in this post.

22 February 2015

Given The Choice, I Would Ride...

Having spent four decades as a devoted cyclist, and having worked in bike shops, I've seen lots of bikes come and go.  I have worked on bikes, parts and accessories made by companies that no longer exist (or, in some cases, by people long dead or who stopped for whatever reasons).  Some richly deserved to be tossed into the dust pail of history; others should have been put in the recycle bin or, at least, the parts box.  

Of course, I took a few "test" rides on interesting bikes I repaired, maintained and assembled.  But there are many more that I never got to ride.  If someone asked me what bike, no longer made, I would ride if given the chance, I'd have to spend a lot of time thinking about it.  A classic velo from a constructeur like Rene Herse or Jo Routens would be high on my list.  So would something from Jack Taylor, especially a tandem.  (Of course, I might not be in a position to truly appreciate it, as I haven't ridden tandems very much!) I'd also be curious to try an early Schwinn Paramount or Colnago as well as some bikes from Americans who built bikes for the six-day racers.  Finally, I'd like to ride some very early Mercians (they started building in 1946) and compare them to more recent ones and, of course, my own.

But if someone were to ask me what part or component I'd like to try, the answer would be much easier:  a Nivex derailleur.  I have grown especially curious about it since "The Retrogrouch" wrote a post on his blog about it and in the most recent Bicycle Quarterly, Jan Heine described the one he installed on his "Rene Herse", built in 2011.  Even he admits that its advantages weren't worth the time and effort he had to put into finding parts for, and rebuilding, the mechanism.  Still, his and "Retrogrouch"'s description of it have fascinated me.

Classic Nivex rear derailleur on Alex Singer bike.  From the Bicycle Quarterly Press


I actually saw one or two--or, at least, derailleurs that closely resembled it--when I worked in shops and the first two times I toured in France.  It makes sense:  Those tours were in 1980 and 1984, and I started working in bike shops in 1975.  Dedicated cyclists, especially in Europe, have tended to keep bikes they like for longer than people keep cars and other items.  So it makes sense that there were still cyclists--mostly of a certain age--riding on bikes from the 1930's, '40's and '50's, when the Nivex was produced.  And, because of its rugged construction (mostly from steel) and design (mounted under the chainstay), it tends to last a long time.  

I think there are several reasons why they fell into disuse.  One, of course, is that the supply dried up.  But more important, once Campagnolo introduced its Gran Sport derailleur--one of the first parallelogram derailleurs made to mount on the rear dropout--bike builders made their frames with dropouts for derailleurs like it rather than the bracket brazed on the chainstay that Nivex and derailleurs like it required.  And other derailleur makers, most notably Huret and Simplex, followed Campagnolo's lead.  Also, as more bikes were spec'd with derailleurs that mounted on the dropout, and more cyclists rode with them, people--including mechanics--forgot how to use, maintain and repair the Nivex.  Finally, as production of Nivex derailleurs and others like it ceased and it fell into disuse, parts for it--and, just as important, the hubs, freewheels and companion components that maximized the advantages of the derailleur--became more difficult to find, especially in the days before eBay.  

(These days, you can go to eBay.  But if you do, be prepared to pay for Nivex and other classic French parts, as they are prized by Japanese collectors!)

From what Jan Heine and "The Retrogrouch" have said, the Nivex derailleur offered all of the advantages other derailleur makers would later try to achieve with spring-loaded top pivot bolts, dropped parallelograms, slant parallelograms and indexing.  That is the reason I'd love to try one.  But I don't think I'd order a bike, as Jan did, that's made for it simply because of the difficulties I mentioned earlier.  


SunTour S-1


One of the few recent attempts to make a derailleur that, in any way, mimicked the Nivex is the SunTour  S-1 of the early 1990's.  "Retrogrouch" said that, to his knowledge, the only bike to come equipped with it was the 1993 Schwinn Criss Cross.  (My Criss Cross, from a year earlier, had SunTour "Accushift" derailleurs and indexed levers mounted on the handlebars.)  Even though, from all accounts, it worked well enough, shop owners and mechanics complained about it and customers didn't want it because it differed from the standards of the time.  Plus, Shimano so thoroughly dominated the market by that time that any other company--especially one that was on the ropes, as SunTour clearly was by that time--would have had a difficult time introducing a "new" concept.  (Most people at that time didn't know about Nivex.)  As far as I know, nobody bought the S-1 as a replacement part because it couldn't be retrofitted to most bikes, which lacked the necessary brazed-on chainstay boss. Perhaps one could improvise a mounting bracket, but who would have taken the time to do that?

Anyway, I would like to ride a Nivex one day.  Jan, if I'm ever out your way, could I borrow your bike for a while?  I may even give you my PMP crank for the privilege! ;-)