Showing posts with label chainless drive. Show all posts
Showing posts with label chainless drive. Show all posts

Friday, August 31, 2012

Another Shaft-Drive Bike Poster from BnF

In my previous post I wrote about the use of Pinterest to present bicycle posters from the French National Library on Gallica. My example was a poster for a chainless shaft-drive bicycle - I didn't notice that there was another poster in their Pinterest collection that is a shaft-drive bike, and one that shows the shaft-drive aspect better.


Did chains break all that often?

The BnF has posters not just from France but from other European countries on their Pinterest "Velo Board." It appears that the above chainless bicycle was made in Denmark by Nordisk Cyclefabrik - ah the things you can discover with Google. Small print on the poster indicates that while the bicycle was made in Denmark and the poster was likely intended for use in Denmark (since it advertises a Danish location for purchasing the bicycle) the printing was done in Paris - so presumably this is how it got into the BnF, through some sort of copyright-like deposit.

Someone in Denmark created a blog post (in English) describing this Danish chainless bike if one wants to know more.

This poster, as with the other, emphasizes the reliability of a shaft-drive bike over a bike with a chain - that chains break and you can avoid that with a shaft drive. It may have been that manufacturing practices at the time produced chains that were less reliable than today - other than bikes from box stores, I think most chains are pretty reliable nowadays (unless abused). Modern attempts to market chainless bikes have focused more on their being cleaner and easier to maintain, particularly for belt-drive systems combined with an internal hub gear system.

The one somewhat fanciful aspect to this poster is the effortless way the rider is proceeding up what looks to be a reasonably steep hill - this shaft-drive bike is still a single speed bicycle and riding up a hill while seated would generally require a fair application of effort. (While I have seen many photos and images of both men and women in the 1890s bent over their bicycles to ride quickly in so-called "scorcher" position, I have never seen a photo where the rider has stood out of the saddle to ride up a hill.)

Sunday, August 26, 2012

Chainless Bike Poster from BnF via Pinterest

The National Library of France Gallica digital library now has a Pinterest account that includes a set of bicycle posters.

One of the posters from Gallica's Pinterest selection

This poster for a chainless bike; that is, for a bike using a shaft drive rather than a chain, is less detailed than most bicycle posters that show the bicycle accurately. This appears to have the shaft drive on the left side of the bike, but typically it was put on the right side - the same side where a chain would run.

While there are still occasional efforts to revive shaft drive systems for bicycles today, they aren't very successful. More successful has been the effort to adapt disk brakes for road racing bikes - I was interested to see Leonard Zinn "throw some ice water" (as he put it) on this notion in his column today. My own experience with Avid cable-actuated disk brakes on a road bike (although not for racing) has been that they are more maintenance headache than they are worth.

Monday, May 21, 2012

John D. Rockefeller and His Shaft Drive Bicycle

John D Rockefeller with Bike
A fellow who supplied oil for the automobile society with an exotic bicycle

Title: [John D. Rockefeller, full-length portrait, standing with a bicycle]
Date Created/Published: 1913.
Medium: 1 photographic print.
Library of Congress
Link to full record

An amusing photo from the Library of Congress - John D. Rockefeller with a bicycle. And not just any bicycle, but a shaft drive bike. Yet another example of a shaft drive bike, an early attempt to provide a superior alternative to using a bicycle chain. The shaft drive approach has the advantage of a clean design look to it, but the mechanical efficiency is lower than a traditional chain and the cost is higher, so the shaft drive approach has never caught on. (I have looked at the subject of shaft drive bikes before, here and here for example.)

Mr. Rockefeller does not have the most expensive model "chainless" bicycle available. This is pretty clearly the Columbia basic shaft drive bike, looking at the Columbia 1912 catalog.

Columbia Basic 1912 Shaft Drive Bicycle

This is the basic Columbia "chainless" bike for 1912

The basic Columbia shaft drive bike was only 75 dollars, having come down from $100 in 1900. You can see the "headbadge" (the company logo, under the handlebars on the headset of the bike) shown in the catalog matches what is shown in the photograph of Rockefeller.

Columbia 1912 Two Speed Shaft Drive Bike
By 1912, this bike was available in this two-speed model and a "spring fork"

The price of this more deluxe model that includes "hygenic cushion frame" (whatever that means) was $100.

Tuesday, April 24, 2012

French Chainless Bike, 1890s Poster

ChainlessBikePoster
My terrible effort pasting together two halves of a scanned poster

Another follow-up on the shaft drive bike-share bikes in Los Angeles - they have been around forever, so if there was something so great about shaft-drive bikes, we'd have a few more being made today.

This poster is for a French bike from the late 1890s and pushes the chainless aspect - it isn't so much pro-shaft drive as anti-chain.

Title: Acatène Velleda / / L. Baylac, Biarritz '98.
Creator(s): Baylac, Lucien, 1851-1913, artist
Date Created/Published: Paris : Imp. Kossuth & Cie., 1898.
Medium: 1 print (poster) : lithograph, color ; 156 x 118 cm.
Summary: Advertising poster for the chainless Acatène Metropole bicycle with G&J tires showing the Germanic priestess, Velleda, a legendary leader of the Batavian uprising against the Romans, with a bird of prey carrying chains and the Latin motto "Vae Catenis," or "Woe to Chains," above its head.
From the Library of Congress
Persistent link to full record

In the good old days of digitization, a large-ish poster like this was scanned in two pieces and the two parts offered up separately, leaving it to others to piece them together. The images are skewed and I could have probably done this better if I fiddled with it, but this is a lot better than what you see here.

The LA shaft-drive bikes have a chain stay (well, what else do you call it, even if it is a chainless bike??) plus the shaft drive, but this older bike follows the more "elegant" design of replacing the right side chain stay with the shaft drive shaft. So, you have to give the old time bike designers credit for that.

Saturday, November 12, 2011

1890s Bike Patents, Sensible and Not So

I have posted about drive systems other than chains before - even though the typical bicycle's chain drive approach was the development that made the "diamond [frame-shaped] safety" bike possible in the 1880s and is amazingly efficient, inventors then and after keep trying to come up with better alternatives.


Shaft Drive patent, 1894
Shaft drive patent in 1894 for a "chainless safety bicycle"

The text of the patent application makes it clear that this was just one "chainless" approach~
The invention relates to the driving mechanism of the class of chainless safety bicycles, and the object is to provide an easy running and noiseless driving mechanism for such machines which while simple and cheap will be strong, durable and readily adjustable. To this end the invention resides in details of the construction and arrangement of the parts making up the driving mechanism of such a machine, as more particularly hereinafter described and pointed out in the claims.
This was not the first patent for a shaft drive system for a safety bike. The typical (and easier) shaft drive approach is to have two regular chainstays and to replace the chain drive with the shaft drive - here the right chainstay is also replaced by the shaft drive, so that the shaft drive replaces to different parts of the bicycle, both its drive system and part of its frame. I suppose it seems more elegant to have a single straight piece of metal rather than two in that space.

Some manufacturers still are trying to come with shaft drive bikes that will sell, but I don't expect them to become common any time soon - as the Wikipedia entry notes, a properly lubricated chain is more efficient.

So while the 1894 patent was not a recipe for success, it was an idea that had a tenacious appeal (apparently, judging by its refusal to go away). The Columbia Bicycle folks tried to sell shaft drive bikes during the 1890s-1900s but they were always the most expensive option and never caught on.

Other patented ideas, however, were just goofy ~

521786
The advantage of this patented idea was what, exactly?

I am quite surprised to read there was a whole "class of velocipedes" using a "continuous circular track" that the bike operates within, as stated in the patent application's text (see below) - I guess if I looked at more old bike patents I would probably find them.
The object of this invention is to improve the construction of that class of velocipedes embodying a continuous circular track or rim in which is mounted a wheeled frame for the rider, and which is pedal driven by the rider. The improvements relate to the construction of the inner machine with reference to its engagement within, and guidance by, the great wheel or endless track.
How do you steer? I confess in the end to be more intrigued by the triangularly shaped chain ring - how does that improve things? There was the famous Shimano "Biopace" chain ring that was oval, but triangular?? Hmm . . .