Imlach's Sweaty Hippie Funk Collection, adventure bikes, rusty rats, cruisers and other alt bastardisations of bicyclery

I asked a well-known online AI resource what the challenges were to building shaft-drive bicycles. It told me that not only are they heavier, harder to engineer, harder to maintain and limited in gear ratio choice, they are less efficient than chain systems. All well and good, but wouldn't it also be quite easy to strip the gears if you suddenly pedalled really, really hard?
 
I asked a well-known online AI resource what the challenges were to building shaft-drive bicycles. It told me that not only are they heavier, harder to engineer, harder to maintain and limited in gear ratio choice, they are less efficient than chain systems. All well and good, but wouldn't it also be quite easy to strip the gears if you suddenly pedalled really, really hard?
ever stripped the gears out of an angle grinder? no, me either, but that's basically what's at either end.



I looked at that and thought "oh, that could be an interesting engineering challenge". I need my head read. :)
 
ever stripped the gears out of an angle grinder? no, me either, but that's basically what's at either end.

Well there you have me sir -- neither have I.
 
I asked a well-known online AI resource what the challenges were to building shaft-drive bicycles. It told me that not only are they heavier, harder to engineer, harder to maintain and limited in gear ratio choice, they are less efficient than chain systems. All well and good, but wouldn't it also be quite easy to strip the gears if you suddenly pedalled really, really hard?
E stay + shaft drive = very handy for those living in flat lands that are permanently under several inches of water and who prefer to wear impractical shoes while riding to work. A tad niche perhaps, but who are we to judge?
 
I asked a well-known online AI resource what the challenges were to building shaft-drive bicycles. It told me that not only are they heavier, harder to engineer, harder to maintain and limited in gear ratio choice, they are less efficient than chain systems.

I had a Biomega Copenhagen, bought roughly 2005 and used as urban bike and commuter for a few years.
20200516_181739.webp
20200509_182455.webp

I loved the design, and clean style, also the fluorescent lacquer, but I start to hate the shaft drive.

I only have dismounted the rear wheel once, it was a major challenge and took me a lot of blood, sweat and tears. Later I have only used patches for flat tires and tried to apply them without dismounting the wheel, of course also not a easy job finding first of all the issue, but this was even the way how it was officially recommended in the manual!

Also the shaft doesn't allow wider tires and produced a bit of noise.

It was indeed also not my fastest bike, but this could be partly also caused by using an integrated gear hub.
 
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I had a Biomega Copenhagen roughly bought in 2005 and used as urban bike for a few years.
View attachment 987755
View attachment 987756

I loved the design, and clean style, also the fluorescent lacquer, but I start to hate the shaft drive.

I only have dismounted the rear wheel once, it was a major challenge and took me 2hours and a lot of sweat and tears. From now on I have only used patches for flat tires and tried to apply them without dismounting the wheel, of course also not a easy job finding first of all the issue, but this was even the way how it was officially recommended in the manual!

Also the shaft doesn't allow wider tires and produced a bit of noise.

It was indeed also not my fastest bike, but this could be partly also caused by using an integrated gear hub.

It's a fascinating concept -- I hadn't thought about combining it with a gear hub -- sounds like a compelling combination as long as you don't need to remove the wheel!
 
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