Sorry guys to burst your bubble, but the reason why the op hasn't shown up anymore is probably because he finished his project, and finally realized...it sucks.
Don't get me wrong: it IS a cool project, especially for anybody who likes fabrication, but the numbers are just not there. Now, I have argued this in the past, together with some other physics nuts, in several other forums, so I'm not trying to start a debate here. I will just say my bit, and you will decide what to do with it.
So here it is:
The op said he bought a 60KW motor, that produces 110 Nm, with a max rpm of 3000.
60KW, at 744W/HP, equals 80.645 bhp. If you assume a 90% efficiency for the motor (definitely a generous assumption for a cheap Ebay motor), you end up with a whooping 72.58 bhp. That is, 15.5 less hp than a B6 SOHC.
110 Nm, on the other hand, equals 81.131 ft/Lbs, 15 less than the B6 SOHC 96 ft/Lbs.
All of that, with a car that, as per the op's statement, is 100 Kg (220 Lbs) heavier than the original.
Now, with an electric motor, he has the option of keeping or removing the transmission, and replacing it with just a differential.
If he retains the tranny, his performance will be comparable to the B6, minus the differences in hp and torque, and his top speed will be 103 mph @ 3000 rpm. Not that bad at all.
Now, if he decides (to save weight, and minimize power losses) to get rid of the tranny...well...
As I'm sure most of you guys know, the tranny doesn't multiply horsepower, but it does multiply torque.
That means that, in first gear, a B6 MX-3 produces (theoretically), to the wheels, 1439.04 ft/Lbs ( I'm using the B8 1st gear final ratio of 14.99, as I don't have the numbers for the B6 tranny), while the electric motor would only produce its own torque, times the differential final ratio.
Now, the op can here choose several different paths: he can either use the same final ratio of the tranny, to keep most of the top speed, or he can go for a taller ratio, to get more torque, while sacrificing top speed, or he can, of course, choose anything in between.
As I said before, I don't know exactly what the B6 tranny final ratio is, but the B8 final ratio is 2.645 (that's the crankshaft to axle ratio, not the diff ratio), so I will use that one for my example.
With that ratio, he will have a maximum torque of 214.591 ft/Lbs, roughly 1/6 the torque of a B6 in 1st, so let's say that he's not gonna burn much rubber...
Or he can try matching the B6 torque in 1st gear, in which case, he'd need a final ratio of 17.737, which would give him a top speed of...19 mph @ 3000 rpm.
Or, of course, he can try anything in between.
Add to that the maintenance costs (yeah, you don't have to change the oil, but batteries don't last much, especially when they have to be deep cycled every day), electricity costs (which, depending on where you live, it may be comparable, or even higher than the gasoline cost), the hassle of having to remember connecting the car every night, the very limited range, ect, and what you have is not a car, it's a nightmare.
Sorry. Electric cars are a nice concept, but, so far, they're noting but toys. Maybe in the future they'll get somewhere, but I'm not holding my breath.
![Shrug :shrug:](./images/smilies/shrug.gif)