In article ,
IMM wrote:
Best not, as gearboxes are unnecesary with electric motors if the motor
is designed and sized for the work in hand. They are also energy
consuming. There is no need for them in cars if the 4 stoke engine is
dropped and eectronics take over the engine management. Using valves
activated by soleniods not a belt from the crank, on a 4-stoke, the
timing can be so that torque is delivered exactly where and when,
eliminating a gearbox.

Now I know you've flipped. Variable valve timing for IC engines isn't new,
and yet those cars which use it have *more* gears than ever before.

If the efficiency of the IC engine is improved enough, ior a Stirling
used, it may be used to power an alternator that powers small electric
motors on each wheel. The electric motors are then the "gearbox".

No they aren't. They become the drivetrain.

You plainly think that anything electrical is 100% efficient. This doesn't
surprise, given you don't understand it.
An electric motor with a wide speed range will have varying efficiency at
different speeds.

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*Also too, never, ever use repetitive redundancies *

Dave Plowman London SW
To e-mail, change noise into sound.