1x for Road Bikes - is it real?

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WyvernRH
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Joined: Tue Nov 06, 2007 6:41 pm
Location: Newcastle NSW

Re: 1x for Road Bikes - is it real?

Postby WyvernRH » Thu Mar 01, 2018 3:44 pm

mikesbytes wrote:
bychosis wrote:
trailgumby wrote:Eventually someone will claim that we all have to move to 13-speed cranks and single-speed hubs because, you know, unsprung mass, and then the designed obsolescence will start all over again.


Pinion gearbox?


Built into the frame around the bottom bracket resulting in a single cog at the crank and a single cog at the wheel :wink:


Been done already, I have a pre-WWII German Adler Dreigang lamplighter's bicycle which has a 3-speed countershaft gearbox built into a large cast triangular bottom bracket shell. The crank is only attached to the crank axle not the chainring which is driven by a tube outside the crank axle which is the final drive of the gearbox. Weighs a ton mind but it is was built not to break.

Image

Image

<edit> Apparently they made a 'Sports' version ! :shock:
https://www.sterba-bike.cz/produkt/adler-sport-bike-c-1930?lang=EN

I believe there was also a two-speed bottom bracket gear in modern times used on MTB's IIRC.

Richard

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bychosis
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Re: 1x for Road Bikes - is it real?

Postby bychosis » Thu Mar 01, 2018 4:10 pm

Cool old stuff ^. but everything old is new again. Now it's an 18speed with a good range of gears.

https://pinion.eu/en/
bychosis (bahy-koh-sis): A mental disorder of delusions indicating impaired contact with a reality of no bicycles.

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WyvernRH
Posts: 2308
Joined: Tue Nov 06, 2007 6:41 pm
Location: Newcastle NSW

Re: 1x for Road Bikes - is it real?

Postby WyvernRH » Thu Mar 01, 2018 4:26 pm

bychosis wrote:Cool old stuff ^. but everything old is new again. Now it's an 18speed with a good range of gears.

https://pinion.eu/en/


Whoa! If that works I want one.....Bet it's expensive tho :|

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