Sorry if this image has been seen a billion times before. I've never seen it but a friend of mine that knows I'm into bikes sent the picture to me asking if it would even be possible to pedal that bike from a stop.
Does anyone know anything about this sort of bike? Is one pedal revolution equal to nine years of time travel or something?
by BrianLevre
7 Comments
I’ll do the math if you count the teeth
https://preview.redd.it/2x178wbajzsf1.png?width=1080&format=png&auto=webp&s=519af20b98f6561676d00165668a45b4f3ded2a1
I’m not counting links. But I think it might be a 90t front. Maybe a 14t rear.
The huge chainring is at least partly offset by the tiny wheel, but it’ll still be a pretty big ratio.
EDIT: plugged this into Sheldon’s gear calc assuming a 90t ring, 14t cog and 16″ wheel, it said 104 gear inches.
Assuming the OD of the chainring is approximately equal to the 2*crank length, that would mean the chainring is somewhere around 80-90 teeth.
If we assume the rear sprocket is 11 teeth and the wheel is 14″ then that would mean that one full crank rotation would be nearly 9m
All of them.
at least 1
Gotta be 12” wheels. Just sayin.
77” is chill. (90/16×12)