My initial thought: a solution in search of a problem…
Cheers,
Nathan
Nathan Wajsman
Alicante, Spain
http://www.frozenlight.eu <http://www.frozenlight.eu/>
http:// <http://www.greatpix.eu/>www.greatpix.eu
PICTURE OF THE WEEK: http://www.fotocycle.dk/paws
<http://www.fotocycle.dk/paws>Blog: http://nathansmusings.wordpress.com/
<http://nathansmusings.wordpress.com/>
Cycling: http://www.crazyguyonabike.com/belgiangator
<http://www.crazyguyonabike.com/belgiangator>
YNWA
> On 02 Aug 2016, at 15:21, Chris Trask <christrask@xxxxxxxxxxxxx> wrote:
>
> Every so often we have a bicycle show up in our shop that stands out for
> one reason or another. On Sunday a fellow showed up with an almost pristine
> 64cm 1980 Motobecane Grand Jubile, the only blemish being the rear wheel,
> which was not original. He had picked it up for $160 in a non-profit shop in
> Tucson. I was deep green with envy.
>
> But yesterday a bike arrived that towered above anything else I have seen
> in terms of uniqueness: A CSA Autobike. This ingenious contraption has an
> automatic rear wheel shifter that operates by way of three weights that slide
> along the spokes, which operate a trio of clevises, which operate a trio of
> pistons, and which then push a shifting ring outwards against the chain as
> the wheel goes faster, shifting the chain to a smaller sprocket. A
> conventional rear derailleur provides chain tensioning and jockying for
> down-shifting. The crankset is also a freewheel so that the chain can move
> while coasting so as to allow the wheel mechanism to shift down as speed
> decreases. Here are some photos:
>
> https://www.flickr.com/photos/64004640@N03/28642433541/in/dateposted-public/
>
> https://www.flickr.com/photos/64004640@N03/28720219755/in/dateposted-public/
>
> https://www.flickr.com/photos/64004640@N03/28720219715/in/dateposted-public/
>
>
> Chris the Moto(bécane)maniac
> ~~~ __o
> ~~~ _ <_
> ~~ (_)/(_)
> --
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