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Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain



 
 
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  #1  
Old April 13th 07, 09:00 PM posted to rec.bicycles.tech
[email protected]
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Posts: 7,934
Default Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain

A current thread leads to some marvelous pictures of old bikes:

http://www.tuttocampybici.com/index.php

For the old bikes, choose gallery and click on prewar.

You end up he

http://www.tuttocampybici.com/browse...php?tag=prewar

To save time, I link directly to large images, but you really should
start at the home page and browse wildly.

Here's some long-pitch block chain:

http://www.flickr.com/photo_zoom.gne...2139683&size=o

On the bottom run of chain, you can see the short, solid block that
connects the long-plate links. (A variant called double-roller chain
replaced the solid block with a pair of short links, but you can see
that the blocks here are solid.)

Note the tiny in-tension chain "stays" and in-tension down "tube"
common in antique frame designs.

Here's some ordinary long-pitch roller chain on what looks like a 18
front-tooth x 9 rear-tooth setup:

http://www.flickr.com/photo_zoom.gne...4095548&size=o

It's just modern chain with links twice as long.

Note the complicated levers along the down-tube that operate the rear
spoon brake, and the absence of a seat-post.

Pictures of 3 different shaft drive bikes:

First bike, front enclosed, rear rack and pinion exposed (maybe a rear
case removed?):

http://www.flickr.com/photo_zoom.gne...2140051&size=o

Same bike, exposed rear teeth appear to be in good shape:

http://www.flickr.com/photo_zoom.gne...2125206&size=o

Second shaft-drive bike, front and rear exposed, rear engages forward
of axle:

http://www.flickr.com/photo_zoom.gne...2139973&size=o

Third shaft-drive bike, heavy frame bracing at rear gear, spider-web
shock-mount for rear fender, wooden rim:

http://www.flickr.com/photo_zoom.gne...2125314&size=o

Speaking of wood . . .

http://www.flickr.com/photo_zoom.gne...2140385&size=o

Timber!

http://www.flickr.com/photo_zoom.gne...2124606&size=o

The weirdest chain ever seen:

http://www.flickr.com/photo_zoom.gne...4095459&size=o

How do you measure chain wear on that thing? Note the Schrader or
Woods valve and the spider-web shock-mount for the fender.

Hope everyone else has as much fun browsing as I did--it's a wonderful
site to find on a snowy spring day:

http://www.tuttocampybici.com/index.php

Cheers,

Carl Fogel
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  #2  
Old April 13th 07, 09:30 PM posted to rec.bicycles.tech
Tim McNamara
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Posts: 6,945
Default Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain

In article ,
wrote:

The weirdest chain ever seen:

http://www.flickr.com/photo_zoom.gne...4095459&size=o

How do you measure chain wear on that thing? Note the Schrader or
Woods valve and the spider-web shock-mount for the fender.


La Chaine Simpson or "The Simpson Chain" which was through to confer
some kind of advantage or another. There's a famous poster by
Toulouse-Lautrec that features that chain:

http://www.yaneff.com/html/plates/pl238.html
  #3  
Old April 13th 07, 09:44 PM posted to rec.bicycles.tech
Gary Young
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Posts: 477
Default Block chain, roller chain, shaft-drive, wood-rim, and world'sweirdest chain

On Fri, 13 Apr 2007 15:30:32 -0500, Tim McNamara wrote:

In article ,
wrote:

The weirdest chain ever seen:

http://www.flickr.com/photo_zoom.gne...4095459&size=o

How do you measure chain wear on that thing? Note the Schrader or
Woods valve and the spider-web shock-mount for the fender.


La Chaine Simpson or "The Simpson Chain" which was through to confer
some kind of advantage or another. There's a famous poster by
Toulouse-Lautrec that features that chain:

http://www.yaneff.com/html/plates/pl238.html


The Wikipedia entry has a description:

http://en.wikipedia.org/wiki/Simpson_Chain

It sounds like the long upright links were supposed to leverage and
multiply the cyclist's effort.
  #4  
Old April 13th 07, 09:47 PM posted to rec.bicycles.tech
James Thomson
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Posts: 518
Default Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain

a écrit:

The weirdest chain ever seen:

http://www.flickr.com/photo_zoom.gne...4095459&size=o


That's a Simpson lever chain. You can see a small framed copy of the famous
Toulouse-Lautrec poster on the wall behind the bike.

http://cycling.ahands.org/simpson.html

How do you measure chain wear on that thing? Note the Schrader or
Woods valve and the spider-web shock-mount for the fender.


That's a skirt guard.

James Thomson


  #5  
Old April 13th 07, 11:06 PM posted to rec.bicycles.tech
[email protected]
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Posts: 7,934
Default Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain

On Fri, 13 Apr 2007 15:30:32 -0500, Tim McNamara
wrote:

In article ,
wrote:

The weirdest chain ever seen:

http://www.flickr.com/photo_zoom.gne...4095459&size=o

How do you measure chain wear on that thing? Note the Schrader or
Woods valve and the spider-web shock-mount for the fender.


La Chaine Simpson or "The Simpson Chain" which was through to confer
some kind of advantage or another. There's a famous poster by
Toulouse-Lautrec that features that chain:

http://www.yaneff.com/html/plates/pl238.html


Dear Tim,

Amazingly, the inventor William Spears Simpson, does not appear in the
Simpson family tree, part of which may be viewed he

http://i19.tinypic.com/2nvw3kg.jpg

It does look like something that Homer would design.

Cheers,

Carl Fogel
  #6  
Old April 13th 07, 11:07 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 7,934
Default Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain

On Fri, 13 Apr 2007 22:47:05 +0200, "James Thomson"
wrote:

a écrit:

The weirdest chain ever seen:

http://www.flickr.com/photo_zoom.gne...4095459&size=o


That's a Simpson lever chain. You can see a small framed copy of the famous
Toulouse-Lautrec poster on the wall behind the bike.

http://cycling.ahands.org/simpson.html

How do you measure chain wear on that thing? Note the Schrader or
Woods valve and the spider-web shock-mount for the fender.


That's a skirt guard.

James Thomson


Dear James,

Aaargh! You're right! Even worse, now that you remind me, I realize
that I knew that and had just forgotten it.

Cheers,

Carl Fogel
  #7  
Old April 14th 07, 03:56 AM posted to rec.bicycles.tech
john
external usenet poster
 
Posts: 129
Default Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain

On Apr 13, 1:00 pm, wrote:
A current thread leads to some marvelous pictures of old bikes:

http://www.tuttocampybici.com/index.php

For the old bikes, choose gallery and click on prewar.

You end up he

http://www.tuttocampybici.com/browse...php?tag=prewar

To save time, I link directly to large images, but you really should
start at the home page and browse wildly.

Here's some long-pitch block chain:

http://www.flickr.com/photo_zoom.gne...2139683&size=o

On the bottom run of chain, you can see the short, solid block that
connects the long-plate links. (A variant called double-roller chain
replaced the solid block with a pair of short links, but you can see
that the blocks here are solid.)

Note the tiny in-tension chain "stays" and in-tension down "tube"
common in antique frame designs.

Here's some ordinary long-pitch roller chain on what looks like a 18
front-tooth x 9 rear-tooth setup:

http://www.flickr.com/photo_zoom.gne...4095548&size=o

It's just modern chain with links twice as long.

Note the complicated levers along the down-tube that operate the rear
spoon brake, and the absence of a seat-post.

Pictures of 3 different shaft drive bikes:

First bike, front enclosed, rear rack and pinion exposed (maybe a rear
case removed?):

http://www.flickr.com/photo_zoom.gne...2140051&size=o

Same bike, exposed rear teeth appear to be in good shape:

http://www.flickr.com/photo_zoom.gne...2125206&size=o

Second shaft-drive bike, front and rear exposed, rear engages forward
of axle:

http://www.flickr.com/photo_zoom.gne...2139973&size=o

Third shaft-drive bike, heavy frame bracing at rear gear, spider-web
shock-mount for rear fender, wooden rim:

http://www.flickr.com/photo_zoom.gne...2125314&size=o

Speaking of wood . . .

http://www.flickr.com/photo_zoom.gne...2140385&size=o

Timber!

http://www.flickr.com/photo_zoom.gne...2124606&size=o

The weirdest chain ever seen:

http://www.flickr.com/photo_zoom.gne...4095459&size=o

How do you measure chain wear on that thing? Note the Schrader or
Woods valve and the spider-web shock-mount for the fender.

Hope everyone else has as much fun browsing as I did--it's a wonderful
site to find on a snowy spring day:

http://www.tuttocampybici.com/index.php

Cheers,

Carl Fogel


Note the tiny in-tension chain "stays" and in-tension down "tube"
common in antique frame designs.



No, no, Carl! They are, not in tension! They stand in compression!
Now repeat after me, three times...

  #8  
Old April 14th 07, 08:16 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 7,934
Default Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain

On 13 Apr 2007 19:56:50 -0700, "john" wrote:

On Apr 13, 1:00 pm, wrote:


[snip]

Here's some long-pitch block chain:

http://www.flickr.com/photo_zoom.gne...2139683&size=o

On the bottom run of chain, you can see the short, solid block that
connects the long-plate links. (A variant called double-roller chain
replaced the solid block with a pair of short links, but you can see
that the blocks here are solid.)

Note the tiny in-tension chain "stays" and in-tension down "tube"
common in antique frame designs.


[snip]

No, no, Carl! They are, not in tension! They stand in compression!
Now repeat after me, three times...


Dear John,

Lest the innocent be misled, here are some drawings from Sharp that
show some of the curious in-tension frames that were common before the
triumph of the modern double-diamond frame:

http://i11.tinypic.com/35mgrif.jpg

Click on the lower right for full-size in Explorer.

Cheers,

Carl Fogel
  #9  
Old April 15th 07, 01:50 AM posted to rec.bicycles.tech
john
external usenet poster
 
Posts: 129
Default Block chain, roller chain, shaft-drive, wood-rim, and world's weirdest chain

On Apr 14, 12:16 pm, wrote:
On 13 Apr 2007 19:56:50 -0700, "john" wrote:

On Apr 13, 1:00 pm, wrote:


[snip]

Here's some long-pitch block chain:


http://www.flickr.com/photo_zoom.gne...2139683&size=o


On the bottom run of chain, you can see the short, solid block that
connects the long-plate links. (A variant called double-roller chain
replaced the solid block with a pair of short links, but you can see
that the blocks here are solid.)


Note the tiny in-tension chain "stays" and in-tension down "tube"
common in antique frame designs.


[snip]

No, no, Carl! They are, not in tension! They stand in compression!
Now repeat after me, three times...


Dear John,

Lest the innocent be misled, here are some drawings from Sharp that
show some of the curious in-tension frames that were common before the
triumph of the modern double-diamond frame:

http://i11.tinypic.com/35mgrif.jpg

Click on the lower right for full-size in Explorer.

Cheers,

Carl Fogel


Of course, Carl
I actually agree that the down spokes do stand in compression.
You're probably aware of the "Sling Shot" bicycle that's made today
using a tension down tube.
www.slingshotbikes.com

Regards, John

 




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