
The wokring concept of Toys with keys still push me think of an idea where in
we can have a vehicle that can run by simply rotating the keys one time and using the stored dynamic energy in the spring to run it (In Hindi=Just like Chabiwala khilauna).So no petro fuel required :-)
A 2 wheeler or 4 wheeler with a facility to have a engine where it will have the MACRO version of the mechanism used in key toy,
there will be a spring made of iron and a strong pully to hold on it, a locking system, a braking system and a release system
Some amount of rotatioal energy is required to initially to rotate the key so that the energy can store into the spring and should be locked, now the driver will
release the lock hen sring will try to release itself inturn generating another rotatinal energy which can be used to rotate the wheel(linear energy) of the vehicle,now the
mechanism starts moving, a driver can put on the brake whereever required to stop
the vehicle or release the brake to again run it.
We can have single or multiple identical mechanism into one to have generate the consolidated force it will be identical to termiology we use for convential motor engine "single or multipe cylinder"
Wow, we got a no-fuel vehicle to use it in an ideal road(flat) or guided route/path like rail.
It can be helpfull as small distance utility vehile.