Pivotal Brakes

Sometimes, when I surf the web, I am swept into a stream of flotsam from bikes past.

Here is an example of what I mean:

Photo by berangberang

If you ride road bikes, something about this brake may seem familiar to you.  And well it should.

It was made by Altenberger in the German Federal Republic (West Germany to us Americans) during the 1970's.  I started working in bike shops during that time, and some bikes--mainly lower-priced ones with upright handlebars--came with that brake.

It's the ancestor of brakes found on nearly every road bike built since the mid-1990's.  Why?  Take a look at those bolts with the red nylon washers.  They make it a dual-pivot brake.  While they may not have been the original of the genre, they were the first dual-pivots to appear on any significant numbers of bikes.

They were supposed to provide the simplicity and light weight of sidepulls but the "symmetry" and modulation of centerpulls.  Unfortunately, Altenberger's brake didn't exhibit any of those qualities.  I think that it had to do with the fact that the arm with the cable anchor bolt usually overlapped the pivot on the other arm, as you see in the photo.  That eliminated whatever "symmetry" the brake may have been designed to have, and made for very uneven braking.

Perhaps even more to the point, the brake was not of very good quality.  The metal used in the arms was pretty flexy. (The fact that the arms were long didn't help matters.)  The rather flimsy spring would lose its springiness fairly quickly, which further diminished the brake's power and modulation.

After Altenberger stopped making this brake (or went out of business altogether:  I don't recall seeing very many of the company's brakes after the early '80's or so), Weinmann produced a similar model, which they called the "Synchron".  Its quality and aesthetics were better than those of the Altenberger, but, like its predecessor, the Synchron never synchronized very well and got worse over time.

So, when Shimano came out with their own version of the dual-pivot brakes, I cringed.  Younger cyclists didn't have memories of the earlier dual-pivot brakes, so they were enthusiastic about this new "innovation".  I refrained from them for a few years until someone with whom I shared, at that time, a similar riding style and whose ideas I respected convinced me to try a pair of the Shimano 600/Ultegra dual-pivots.  Although I was, at first, put off by their gray epoxy finish as I was by the fact they were dual-pivots, I became a convert.  Shimano figured out how to actually make the arms work in harmony and used better quality materials than the ones found in the Altenberger or Synchron.  Even the lower-priced Tektros, not to mention the higher-end Mavic and Campagnolo Record and Chorus 

dual-pivot brakes, are worlds better than those early attempts to combine the advantages and eliminate the weaknesses of center- and side-pull brakes found on ten-speeds of the 1970's and earlier.

I'm Back: Say Hello To Vera

The semester has begun and, as you probably can imagine, I've been busy.  To those of you who expressed concern for my safety:  Thank you.  I was hardly affected at all by Hurricane/Tropical Storm Irene, save for the fact that I had to stay indoors and miss a few days of cycling.  

Vera

But, as you've seen from my last couple of posts, I've begun to commute on Miss Mercian II--who will henceforth be known as Vera.  I could get all literary and scholarly on you and say that I named her after some character in a Restoration play, or some such thing.  Truth is, I decided on the name after listening to Pink Floyd's "The Wall."  You know the song I'm referring to. 


I'll write about her ride after I spend some more time on her saddle.  Her wheels and tires, as well as much of her other componentry, are heavier than those on Helene, my other Miss Mercian mixte.  Plus, the geometry is a bit different.  Finally, I'm still tweaking a few things on Vera.


Speaking of which:  I'm going to install a set of centerpulls on Helene.  I've always felt that they were better for bikes with long clearances.  They fit better around fenders, for one thing.  Plus, on bikes with long reaches (more than about 60 mm), traditional sidepulls feel mushy, while dual-pivot brakes (like the Tektro 556s Helene now has) seem to have an "all or nothing" feel to them.  It may well have something to do with the levers (the Tektro inverse levers that are styled like the old Mafac bar-end levers)  I'm using with them.  They seem more suited for a centerpull or cantilever brake.  


On the front centerpull,  I'm going to install one of those little TA-style front racks (made by Dia Compe and purchased from Velo Orange).  I could use a small basket or rack bag--or, of course a handlebar bag.  Perhaps I could also strap my purse or handbag to it.


There is a "casualty" in all of this.  Yes, you guessed it:  Marianela.  She went to a good home this week.  A woman who's my height and whose legs are the same length as mine is going to ride it to graduate school, which she is starting this week.  I realized that if I had simply given away or donated Marianela, she could have ended up with someone who was too short for her, or simply wouldn't have appreciated her.  By the same token, I didn't expect to get much money by selling her, and I didn't.  I asked for a low price in my Craig's List ad, and after the woman and I talked, I lowered that price and threw in a few "extras." 


I sold the bike with the Gyes Parkside saddle.  I wasn't going to part with the Brooks saddles on my Mercians, all of which are somewhat to significantly narrower than the Gyes.  And I had only one other saddle:  some cheap, hard and narrow no-name nylon thing with thin padding, which I know Marianela's new owner wouldn't have liked.  


I felt good about the transaction:  Marianela and her new rider are right for each other, I think.  And I think Vera will make my commutes more fun.