14 September 2017

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.  


Kalkhoff Trekking
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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.


13 September 2017

Not Paved With Gold: Lined With It

We've had some insanely nice weather the past few days.  That's going to end late this afternoon or tonight, according to weather forecasts.  Rain will fall, but it won't be anything like what folks in Texas and Florida have experienced.  And it won't be accompanied by wind.

This morning's commute, though, was a treat:





Hell Gate doesn't seem so Hellish when the sun rises amidst the columns of morning.





From the dawn horizon, I rode the Randall's Island path underneath the Amtrak trestle (a.k.a. the Hell Gate Bridge) to the Randall's Island Connector.


Randall's Island Connector: The Bronx's new car-free link to Manhattan from STREETFILMS on Vimeo.

Legend has it that people emigrated to the US after hearing that streets in America were "paved with gold."  Believe it or not, such stories still circulate and entice the poor, the hungry and the ambitious to come here.


Of course we all know the streets aren't "paved with gold".  But, for a moment, it seemed as if the Randall's Island Connector was lined with it:





A good day has followed.

12 September 2017

Yes, Cycling Is Intoxicating...Especially If You Ride This Bike

I've been reading about bamboo bicycles for the past few years.  I have only seen two in person, neither with a rider aboard.  So, apart from what I've read in a few cycling magazine and blog reviews, I know nothing about their ride qualities.  And those reports vary widely.

It seems that there are basically two types of bamboo bikes:  the ones that have some sort of metal at their joints and the ones--like Calfee's--that are made by joining bamboo tubes with hemp.  

I must say that if I were rich, I'd buy a bamboo bike as an objet d'art or a conversation piece, but certainly not as my only bike.  From what I've read and heard, such a machine--an odd term, isn't it, to use in reference to something made of bamboo--would give a cushy but not very snappy ride.  That, of course, would rule it out for a "do it all" bike, let alone one for fast rides.  

A bamboo bike might not "ride on rails".  But neither would the latest creation from Portland (where else?)-based wooden bike specialist Renovo.  A wobbly ride on it, however, might not be the fault of the bike itself--or its materials.  Rather, the problem, if you will, is more likely to lie with the rider.



You see, the latest Renovo model is made from barrels in which Scotch--specifically, Glenmorangie--was aged.  The renowned distiller, who is marketing the bike, ships the wood to Renovo in Portland, where the frames are crafted and finished--with the distiller's name on the right chainstay.



And, of course, the wood is infused with the world-famous libation.  Dr. Bill Lumsden, director of Glenmorgie's distilling and whisky creation, says that the casks are used only twice to make The Original, "a whisky which balances hints of ripening peaches and citrus fruits with creamy vanilla notes, to delight malt connoisseurs and amateurs alike."



Now, I don't know whether you'd notice those hints of peach and citrus or notes of vanilla while you're riding.  I'm not even sure they have anything to do with the color and texture of the wood, let alone the bike's durability or ride quality.  Does the whisky dampen shock?



Whatever the case, Dr. Lumsden says that even though his creation is mixed with the wood, customers shouldn't combine it with riding the bikes made from the barrels in which it's aged.  The original should be consumed apres-velo.