Bicycle Technology and Patents Blog

1949 Recumbent

shaver — Wed, 01 Sep 2010 03:39:33 +0000

This appears to be the precursor to so many fast recumbents, like the P-38. This was a 1949 U.S. patent to an inventor named Fries.

Tadpole Trike, rear wheel steering, front wheel drive, 1950s.

shaver — Wed, 04 Aug 2010 01:05:02 +0000

I’m guessing this cool little tadpole trike is from the 1950s, judging by the stylin’ hairdo. This photo from the site “Modern Mechanix, where “yesterday’s tomorrow is today.”

Tadpole Trike for cargo

shaver — Mon, 05 Apr 2010 01:47:49 +0000

Here is an interesting tadpole (two wheels in the front) tricycle, from 1942, which was used to deliver aircraft parts from one part of the North American Aviation factory to another part of the factory.

Joules, the cycling robot

shaver — Wed, 23 Dec 2009 15:59:01 +0000

Specifically, Joules is a robotic stoker for your tandem bike, when you are riding solo on a tandem.

This project definitely has a steam punk flair, and combines some art, whimsy, and a good deal of engineering. Joules was built by engineer Carl Morgan with his son, a former pro cycling racer. The web page with more information on Joules is here.

Carl has a great U tube video also, linked below.

Clothes for Comfortable Cycling in 0 F Degree Weather

shaver — Thu, 10 Dec 2009 00:58:56 +0000

The temperature here in Boise has been around zero degrees F for the past week, and I have been riding my Catrike Speed to work everyday. The combination of clothes I have keeps me warm all the way, and my only problem is my glasses and ski goggles fogging up sometimes. My clothes are an example of the layering system. The first layer is thick wool blend socks, polypro long underwear top and bottom, and thin polypro liner gloves, as shown below.

The next layer is an insulating layer, which is added to the base layer. This includes Keen cycling sandals, North Face cross country ski pants which are windproof, fleece gloves where are the inner part of a pair of winter mountaineering gloves (Chouinrd winter gloves), fleece neck gaitor, head covering by Pearl Azumi, and Expedition weight Patagonia Capilene pullover. I have a down coat I could wear, but at around zero degrees it is just not needed.

The outer layer is made up of Marmot uninsulated goretex wind pants which zip all the way up the leg, Sidetrak neoprene boot covers which leave the cleat on the bottom of the shoes exposed, the nylon outer gloves of the Chouinard winter gloves, an REI goretex raincoat, a cycling helmet, and a waterproof helmet cover. Not shown are my ski goggles, which I wear over my glasses unless they fog up.

Round the World on a Bicycle, 1884

shaver — Tue, 24 Nov 2009 17:21:00 +0000

On April 22 1884 a young reporter from England named Thomas Stevens left San Francisco and headed east on a Pope “Columbia” ordinary bicycle. This was a high wheel type bike, and had a 50 inch front wheel.

A few weeks into his trip he shot a moutain lion, and 103 days and 3700 miles of wagon roads after starting, he was in Boston. After wintering in New York, he took a steam ship to Liverpool, and rode through England. He took a ferry to Paris, and rode through Germany, Austria, Hungary and was in Bulgaria by June 24 1885. A month later he was in Istanbul, and spent 6 months in Persia. He was arrested in Afganistan and returned to Persia. By August 1886 he was in India, and two months later he was in Canton China. He cycled in Japan and headed for San Francisco by steamer and arrived December 24, 1886. Steven’s wrote a series of letters during his journey which were published in Harper’s magazine. The letters were collected into a book, Around the World on a Bicycle and is available in reprint and in digital form in the Gutenburg Project.

Terracycle Accessory Mount

shaver — Wed, 04 Nov 2009 03:47:31 +0000

I was wondering how to move my tactical flashlight so it would be in front of, under, or on top of my fairing. The light is usually mounted on the front deraileur post, but with the fairing on for the winter the light really lights up the inside of the fairing, and that blocks a lot of light from hitting the road ahead.

A helpful email from Pat Franz of Terracycle suggested the Terracycle Accessory Mount would probably do just what I wanted. The unit arrived in only about two days after the internet order! I put it on, and it does get the flashlight above the fairing nicely. I’m going to ride it a few days like that, and I think I will try it mounted lower on the fairing frame, maybe even poking through a hole in the fairing. Here is what is looks like mounted over the top of the fairing. It is a bit distracting having that in my line of sight, but I might get used to it.

Update on Use of Tactical Flashlight for Winter Bike Light

shaver — Mon, 02 Nov 2009 05:06:37 +0000

I have been using this light for two years now, through two winters commuting every day in the dark, rain, and snow. I thought I would post an update on the light setup and where to get the components.

The flashlight is a Surefire 6P tactical flashlight. It is very solid aluminum, water proof, and a bit pricy at around $50. Mine is a Surefire 6P, and other Surfire models would work such as the SureFire 6Z, C2, M2 and G2 or Cabela’s 6 v flashlight made by Surefire ($32). These models are available from Surefire, Amazon, ebay or Cabela’s.

The flashlight comes with an 80 lumen incandescent bulb, which is very fragile, and for my system you take out the factory bulb and replace it with a Malkoff M60 insert. This is an LED bulb with a plastic lens, which boosts the output to 240 lumens, and is apparently an indestructible bulb. My flashlight has hit the pavement at 20+ mph many times, and the bulb is fine. I have a flashlight like this pointing rearward with a red lens, and one pointing forward with a clear lens, and people tell me I’m very visible.

The Malkoff M60 insert is available from the inventor, Gene Malkoff, on his website. Many police use a Surefire flashlight with the Malkoff insert. They say “It will easily illuminate objects at 350+ feet and will blind opponents within a 100 foot radius.” It is very visible in the daylight or dark. I take the flashlight camping, and it will light up a mountainside 50 yards away. The insert is $49.95 alone, but this thing is indestructible, and is truly a lifetime flashlight.

I have been using the same 17670 AW Protected Battery, one for each flashlight, everyday for a year. They seem to wear out after a year, and I’m on my 2nd set. They are available from Lighthound for $11. I get about 2.5 hours from each charge, and I turn them on day or night, summer and winter, and I charge them twice a week.

This is the Malkoff insert, which goes inside the flashlight.

I use either a Fenix 360 Bike Mount light holder, $15, this is high quality in fit and finish, but rattles. A small rubber band between the top half and bottom half stops the rattle. A no-name brand is also pretty decent, on ebay for about $10, search Ebay for “New Bike/Bicycle LED Flash Light Mount Clamp Holder.” These are a little loose on the Surefire, so I put a section of inner tube around the flashlight body, for a tighter fit.

Charger: Ultrafire WF-139 Charger for 3.7 volt Lithium Battery Charger, from Lighthound.com, $18.00 (charges two of the 17670 batteries).

I had a friend get this setup, and on a long bike ride through an old railroad tunnel in northern Idaho, his light was the monster of all the lights in the blackness of the tunnel.

Front Wheel Drive Recumbent, 1950

shaver — Mon, 26 Oct 2009 22:54:23 +0000

What is the big deal about front wheel drive recumbents? Here is one that is really cool, from 1950. It has an internally geared hub, and a very stylish body. This would be a cool bike!

Early FWD Recumbent

shaver — Thu, 22 Oct 2009 21:34:02 +0000

Thomas Traylor’s 1982 design patent for a front wheel drive two wheeled recumbent, very similar in design to a Cruzbike Silvio. Considering Maria Parker’s new 12 hour record, set on a Cruzbike, maybe Traylor was ahead of his time!