Working On A Friend's Brompton

Last night I did something I've never done before.  No, I didn't drive a Tesla (or any car at all) or buy a carbon fiber seat post rack.  And I didn't sleep with a Republican or an astrologer. (I've done both before, but not last night.)  And I didn't eat Jell-O.

What I did was something I never got to do when I was working in bike shops:  work on a Brompton.

You see, bike in my days of working at Michael's BIcycle Company and Highland Park Cyclery, Bromptons weren't yet being made.  And, by the time I was employed at Emey's and Open Road. the bikes were still all but unknown in the US.

I had promised a friend I would help him with his annual maintenance of his steed, which he purchased second-hand several years ago.  I knew that Bromptons had some proprietary parts and, of course the folding mechanisms (which I didn't have to work on).  But, really, it's not much different--at least mechanically--from other bikes. The front hub still had the same cups, cones and bearings; so does the headset.  And the Sturmey Archer 8-speed hub is like other multigear hubs I've maintained and adjusted.

The thing I found most different about the Brompton is its cabling. It takes the same sorts of gear and brake cables as other bikes, but there is a lot less room for error in cutting the cables and housings to the proper lenghts.  Also, the cables have to be routed in a particular way.  Otherwise, they would bind and prevent the bike from folding--or get caught in the folding mechanisms.

But, other than that, there was nothing particularly difficult or unusual about working on the bike.  Were I to get a folding bike, it's the one I'd want.

By the way, my friend's Brompton is finished in "Celeste" (a.k.a. Bianchi) green.

Brazed-On Amnesia

When I first became serious about cycling--around the time that the early '70's Bike Boom was gathering steam--almost no bikes available in the US had brazed-on bosses for water bottle cages or shift levers/cable guides, let alone for racks. Most bikes didn't even have fitments for brake cables:  Most high--performance bikes of the time, like my Peugeot PX-10, had their rear brake cables clamped to the top tube.

Even the custom bike builders of the time didn't braze such fittings onto their frames.  All of the guidebooks of the time told us that brazing weakened the metal at the point at which it was brazed and therefore risked cracking or breakage.

A few years later, when I was working in a bike shop, I did see a couple of brazed-on shift lever bosses that broke off their frames.  But those were on cheaper bikes built from thin-walled tubing.   

Of course, at that time, I --like most novitiate American cyclists--did not know about the French constructeurs or British custom builders, who had been brazing bits onto their frames at least since the 1920's.  Actually, some of those builders--most notably Rene Herse--actually made racks, water bottle cages and such an integral part of the frames they built.

And, apparently, some not-so-elite pre-Bike Boom bikes had brazed-on bits, like this circa 1964 Schwinn Varsity I saw parked around the corner from my apartment:

Those levers, like the derailleurs on the bike, were made by Huret for Schwinn.  Those levers--like so many other French parts of the time--had style, if not engineering.  (Installing or removing cables--which you did often if you had a Huret Allvit derailleur like the one on the bike in the photo--was a project unto itself.)  As for the brazed-on bosses:  I think Schwinn was able to do them because the tubing on the frame was thicker than that of most other ten-speeds.

A couple of years later, the Varsity--as well as the Continental and Super Sport--would come equipped with massive stem-mounted shift levers.  And their top-of the line bike, the hand-made Paramount, would offer nary a brazed-on fitting.

A Late Spring, But I'll Take It

Yesterday's ice melted; I got out for a while.  Though still cold for this time of year--and windy--it was a rather lovely day.

One thing I've noticed, though, is that everything seems to be budding and blooming later than it has in other years.  I'm not complaining, though, especially after seeing this tree:

or this patch near it: