I happened to stumble upon this "restoring a bike" video.
Not much talking in it, but it seems to be a *two speed bottom bracket*
bike. I had never heard of such a thing...on this group or anywhere.
https://www.youtube.com/watch?v=SUi0PMG503g
The gearbox does not really make an appearaance until the "assembly" phase
of the video.
My mind immediately jumps to: How about pairing it with a two-speed rear hub for a total of four speeds or a three speed and on and on.
I am very curious if anyone is familiar with this beast asto what the
ratios would be...direct drive, no doubt, and....?
pH in Aptos
On 4/17/2025 10:28 PM, pH wrote:
I happened to stumble upon this "restoring a bike" video.
Not much talking in it, but it seems to be a *two speed bottom bracket*
bike. I had never heard of such a thing...on this group or anywhere.
https://www.youtube.com/watch?v=SUi0PMG503g
The gearbox does not really make an appearaance until the "assembly" phase >> of the video.
My mind immediately jumps to: How about pairing it with a two-speed rear hub >> for a total of four speeds or a three speed and on and on.
I am very curious if anyone is familiar with this beast asto what the
ratios would be...direct drive, no doubt, and....?
pH in Aptos
It can be done, and has, but Archibald Sharp spent some
several paragraphs on why gearing is better applied at the
driven end than the drive. In 1899.
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