Back in the 1960's and well before, our city had trolley buses that were powered by relatively big electric motors, nothing else.
The electric motors apparently had maximum torque at zero rpm. I never quite understood this. I think what it meant was that the these electric motors powering the buses had their max torque from the time the engines started their revolving.
But I'm not sure ?
I do know that a large city bus, full of passengers, both sitting and aisle standing would top out at around 95-100 people. I know this, for as a teenager back then, I worked for the transit authority, counting passenger loads, checking schedule times, run and bus numbers.
What I'm saying is that large buses, including both electric and diesel back then, had to move a lot of weight....both in weight of vehicles and with a max load of passengers.
The buses in the transit fleet back then, included GMC diesel, Canadian Car diesel, Mitsubishi V8 diesels (beautiful big block V8 sound) and electric powered buses.
The electric buses seemed to have far more power and acceleration then any of the diesels...although the Mitsubishi diesel V8 was no sluggard.
So how does the horsepower/torque and maximum torque at zero rpm (?) for an electric motor fit into this whole thing ?
