Because if you have the pedals stuck to the wheel axle, and no gearing inbetween, the only way to get some useful speed out of the bike is to have a really large wheel.Because before the chain drive and gearing was invented, bikes were direct drive - meaning that the drive wheel spun at the same rate as the pedals. The only way to get some speed out of the bike then was to make the drive wheel really big.Once the chain drive made it easy to add a gearing ratio wheels could be built with equally sized wheels and a better rider position.
The safety bike was different in that both wheels were the same size.
There are different sizes for dirt bike wheels as there are for regular bike wheels.
I think you've gotten your phrases confused.A high-wheeler was a direct drive bike with the pedals stuck directly onto the axle of a huge front wheel. They tended to flip over during hard braking.Safety bicycle was the name given to the the chain-driven bikes with equally sized wheels that weren't as prone to flipping over.
Because the wheels move at another pace than the cranks, which is caused by the chain and the differently sized sprockets acting as levers.
Thin wheels alone isn't enough to identify the bike type. Can be a road bike, bike, a track bike, a TT bike. Even fixies and single-speeds can have thin wheels.
The wheels are the big round things on which the bike moves and the axles are at the center of the wheels, attaching them to the bike.
how invented the quad bike how invented the quad bike how invented the quad bike
Usually not. The penny Farthing was invented before the inflatable bicycle tire was developed.
Change the wheels with specil ski wheels i think its called ski bike.
it has wheels
Bicycle means having two wheels