Shaft-driven bicycle - video and photo

[Frank S]

Thanks Jon pretty much confirms what I thought, except the up and down could be a function of weight distribution on the gas shocks. Also the banana seat on this one allows for rider to stretch his legs as well.

[bruce.desertrat]

Here's the first one of those I saw, includes a how-to: https://www.instructables.com/id/Tra...-Chopper-Bike/ I have a couple books of Atomic Zombie's bike deseigns, they range from useful to fun to just weird, to terrifying, like this one http://www.atomiczombie.com/ourhistory/Figure%207.jpg

[Frank S]

Here's the first one of those I saw, includes a how-to: https://www.instructables.com/id/Tra...-Chopper-Bike/ I have a couple books of Atomic Zombie's bike deseigns, they range from useful to fun to just weird, to terrifying, like this one http://www.atomiczombie.com/ourhistory/Figure%207.jpg

Could always put 2 of those zombie bikes together to make a scaffold and use them to change the street lights otherwise nearly impossible to mount or dismount if you are not a circus performer

[Jon]

More: https://www.sterba-bike.cz/album/366...allery?lang=EN

[Frank S]

More: https://www.sterba-bike.cz/album/366...allery?lang=EN

Must have been an attempt to add suspension to the bike to smooth out the rough ride over cobble stone

[PJs]

Thanks Jon! Interesting and fun use of hatch struts but think he needs hi-rise bars on it.

[Jon]

[Slim-123]

А почему цепь? Чем кардан хуже? :пальцы вверх:

[Frank S]

А почему цепь? Чем кардан хуже? :пальцы вверх:

привод вала и передач, чтобы попытаться сделать механизм проще с меньшим количеством движущихся частей
the drive shaft and gears is to try and make the mechanism simpler with fewer moving parts

[Toolmaker51]

If the pitch of driven side is equal, the 'pinion' could slide on a splined [square would do, or two flats on a round] axle, indexed for each ratio. A light spring could advance the position for speed, overcome by a lever to downshift.
Interesting what reduced friction vs chain is possible.