Finely linked chain

[Alpha Beta]

To more finely defined gearing ratios, manufactures might try making a finer chain. For example if
the chain links were half as short you might be able to ge 22-68 cassette and 104-84-60 chain rings
using the same diameter sprockets and chaing rings. With such teeth, you would be able to more
finely step the the cassettes. If the rings themselves were thinner, you might beable to fit more
sprockets onto a cassette.

Has any manufacture tried to tackle the technical difficulties of this. I am certain that with new
space age materials, you should be able to make a finer chain link with equivalent strength.

 

[Robert Wand]

A chain with a 1/4 pitch would not have rollers or pins large enough to transmit the power for your
application. Also the tooth profile would be too small for the load.

Bob Wand Dallas, TX

"Alpha Beta" <[email protected]> wrote in message
news:[email protected]...
> To more finely defined gearing ratios, manufactures might try making a
finer
> chain. For example if the chain links were half as short you might be able to ge 22-68 cassette
> and 104-84-60 chain rings using the same diameter sprockets and chaing rings. With such teeth, you
> would be able to more finely step the the cassettes. If the rings themselves were thinner, you
> might beable to fit more sprockets onto a cassette.
>
>
> Has any manufacture tried to tackle the technical difficulties of this. I am certain that with new
> space age materials, you should be able to make
a
> finer chain link with equivalent strength.

 

[Dave Larrington]

This method has been used by certain Kunning Konstructors to get big gears on small wheels. The
pioneers in this field were John and Miles Kingsbury, who used 8mm pitch industrial roller chain in
the transmissions of their racing pedal cars and early HPV's. Latterly, the Virtual Edge uses a
similar sized chain for the final drive to the front wheel.

Dave Larrington - http://legslarry.crosswinds.net/
===========================================================
Editor - British Human Power Club Newsletter
http://www.bhpc.org.uk/
===========================================================

 

[Jeff Wills]

"Dave Larrington" <[email protected]> wrote in message
news:<[email protected]>...
> This method has been used by certain Kunning Konstructors to get big gears on small wheels. The
> pioneers in this field were John and Miles Kingsbury, who used 8mm pitch industrial roller chain
> in the transmissions of their racing pedal cars and early HPV's. Latterly, the Virtual Edge uses a
> similar sized chain for the final drive to the front wheel.
>
> Dave Larrington - http://legslarry.crosswinds.net/

And lettuce not forget Shimano's "Dura-Ace 10" track group, with its proprietary 10mm pitch chain,
cogs, crankset...

Jeff