"But unlike you I can also come up with actual numbers, easy to find"

You ever heard of final drive ratio? Its the ratio of engine to wheels that matters, not engine to transmission shaft.

"google brushless motor efficiency, look at images if you don't fancy reading."

If you're going to try and be patronising it helps if you have a clue what your argument is and what the curves actually mean and how they relate to modern motor control systems using IGBTs.

"i said rarely. "

So what? Even it its only once it still needs a clutch unless you're suggesting they should push it from a standing start?

"once again, you don't need a clutch for an electric motor, whether it is mated to a gearbox or not"

Nice try. But don't try and flip the argument. You said F1 cars don't need a clutch so don't try and pretend you meant electric motors all along.

And apparently you don't understand electric motors.

Oh FFS. Peak efficiency is for piston engines, not electric motors. Do you think theres a ratio swapping gearbox for every motor in a TGV?? Yet they still got one up to 320 mph.

"Considering f1 cars rarely stop, it's not a significant problem to forgo a clutch"

Umm, they stop for the pitstops and they have to move away at the start. Please suggest a way to do that without a clutch.

No, they keep the rpm down. Try driving at 100 mph in first gear if you don't believe me.

Well if you don't have one (or a torque converter) then you're still going to have the motor pulling away from zero rpm from stationary regardless of the gear ratio.

No idea why you got modded up for that comment. If you want to keep the motor rpm *up* then a gearbox is the last thing you want - just let the motor spin as fast as it can until back emf stops it or it flys apart. Gearboxes (on cars) are designed to keep the engine rpm *down*

Err, unless you have a clutch too then a gearbox makes no difference to your scenario.

The whole point of electric motors is max torque from zero rpm so what the hell does it need a 5 speed for? Ok, its rpm isn't unlimited so eventually you'll have to changed the ratio to get a good top speed , but 2 ratios should be enough for this. Whats going on?

As others have said, its so hamstrung by endless idiotic technical rules than any innovation packed its bags and walked a decade ago.

You need your food mashed up like a baby or something?

It was a tongue in cheek comment. Obviously you and the pre-school moderators were too fucking stupid to see that.

Any civilisation that in 5000 years never managed to invent the fork and carried on using 2 sticks to eat with isn't that great.

"But if you're a programmer, you do."

Yeah, right. Meanwhile, back in the real world where companies will simply not renew your contract and hire someone who WILL work the full hours....

Exactly that. Its as if knowing how to use a steering wheel and pedals suddenly turns you into a vehicle engineering expert.