13 April 2021

Speed, From The Comfort of Your Sofa

In my post about the death of Prince Philip, I mentioned that he particpiated in one of the few genres of cycling in which I've never tried:  bicycle polo.

Now I'm going to talk about one of the few kinds of bicycles I've never tried:  the recumbent.

The "safety" bicycle, with two wheels of equal (or nearly so) size and a gear-and-chain drivetrain appeared in the late 1880s.  Earlier bicycles--the high-wheelers often called "penny farthings"--had a front wheel much larger than the rear.  The crank and pedals attached directly to the front wheel, so how high or low a gear you rode depended on the size of the wheel.  Typical front wheels were 60 to 70 inches in diameter, which meant for a rather precarious perch in the saddle.  The "safety" bicycle was a contrast to such machines.


Charles Challand's "Normal"



But not everyone liked the bent-over position of those early "safety" bicycles.  So, Charles Challand, a Geneva professor, created the "normal" bicycle--so called because it allowed the rider to pedal in a "normal" position.

Around the same time, Irving Wales of Rhode Island applied for a patent on a similar bicycle.  His bike, however, had an added feature:  a hand drive similar to the one on a rowing machine.  Though augmenting pedal power could make for a faster ride, hand power never really caught on.

Other tinkerers would experiment with other features, which re-appear from time to time on modern recumbents:  An Italian recumbent had a steering wheel instead of handlebars; an English machine had a 16 inch front wheel and short wheelbase, rather like a time trial or triathlon bike.  A long-wheelbase recumbent from France, possibly made by Peugeot, had a 26-inch rear wheel and 22-inch front, with a front end resembling that of a diamond-frame safety bike.  But the handlebars were where the saddle of a safety would have been; bridle rods linked them to the steerer (headset). 

That long-wheelbase recumbent might have been the most conspicuous example of what recumbent bike designers have tried to achieve:  a smooth, stable ride from the comfort of your sofa.


Paul Jaray's "Sofa" bicycle



Speaking of which:  In 1921, Austrian aeronautical engineer Paul Jaray created the "sofa" bicycle.  In addition to its seating arrangement, it boasted another unique feature:  treadle drive.  On his first stereotype, Jaray connected the treadles to the rear wheel by steel cables with return springs.  

In a later version, a cable from the left treadle lever wound several times around a left drum on the rear hub, then onto a horizontal pulley, and then onto a right drum.  After several more winds, the cable connected to the right treadle lever.  This might seem complicated, but it did away with the "dead center" problem of the first stereotype.

Over the years, other cyclists, engineers, inventors and tinkerers experimented with different recumbent designs.  Two developments, though, halted the machines' evolution for a few decades.  The first came in 1934, when the UCI published a new definition of racing bikes that, some said, was crafted specifically to exclude recumbents, which were being ridden to record times and distances.  The second was World War II.  

Still, the recumbent never quite faded away.  There seems to be renewed interest in them, and they're being reconfigured with modern materials and componentry.  One rarely, if ever, sees recumbents here in New York or in other large cities, I believe, because of their (and their riders') lack of visibility in traffic.  But I intend to ride a "sofa" one day.

1 comment:

  1. I hope you try a recumbent. I've had two, a two wheeler that was fairly upright and visible in city traffic, and for the past ten+ years, a recumbent trike. What a fun switch up, riding from a position where your upper body is relaxed and your leg muscles do ALL the work - no help from posture changes that we take for granted on our standard bikes.

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