You would have everything electrical and electronic, except for whatever you need to do to interface the Leaf bits with the remaining BMW bits.If i buy a complete Nissan Leaf, will i have all the parts to do a conversion to my BMW? Offourse i will have a motor, charger, battery, electronics etc. everything.
I can do fabrication myself.
There certainly are: although lots of them just don't make sense, there are still multiple viable options. And each decision affects the other options.Just looking at different options right now. But there seems to be a lot of options.
Lots of possibilities. Lots of decisions to be made.
The idea of a consistent manufacturer is nice, but of no practical value unless the parts work together... and that's unlikely between an E30 and an i3.Ideally i would like to keep it all BMW so use an i3 motor etc.
Adding to an EV pack is problematic. If you add modules in series, you will have a higher working voltage which is unlikely to work well with the charger, BMS, and inverter/controller that came from the donor EV. If you add in parallel, you have to completely double the battery to have the same voltage, which is a huge pile of modules... and still likely problems with the stock supporting components from the donor EV.... So i was looking at Leafs, they are a lot cheaper, they don't seems to have any secrets anymore, everything from motors to electronics can be reused and since there are a lot of them selling off the est of the parts shouldn't be to hard. Only thing is i might have to buy extra batteries because of the small range a Leaf has.
All valid options, but if you try to put a Leaf drive unit at the rear axle you have the problem that the E30 suspension arms are ahead of the axle line and so is the motor (unlike the Tesla Model S/X unit which has the motor behind the axle), so they will not fit together. You can flip the drive unit around, if you can sort out any gear lubrication and motor control issues with operating it most of the time in reverse.It's all going in an E30 Touring, i spend the last year making sure the E30 is rust free, all suspension is redone, all bushings are replaced by new ones. It's ready for another 200.000miles.
I don't know yet where i want to mount everything. Keep the transmission and bolt a motor to that. Keep the rear differential and bolt a motor to the diff or do it like the Tesla powered BMW, create a new sort of subframe/bracket setup and mount the motor in place of the diff and thus loosing gearbox and diff.
If i buy a complete Nissan Leaf, will i have all the parts to do a conversion to my BMW? Offourse i will have a motor, charger, battery, electronics etc. everything.
I can do fabrication myself.
The E30 - like other BMWs of the era - had a semi-trailing arm rear suspension. That means interference between the suspension arms and a transverse drive unit with the motor ahead of the axle line, such as the one from a Leaf. As I noted earlier, that leads to two options:If the motor can fit in the rear without massive modification, that would be the best route in terms of space/weight/simplicity, and also get rid of the weak links in the existing drivetrain. I suspect it's...involved.
There was apparently an E30 generation AWD 3-series - the 325iX starting in 1985. I still don't see the logic of using a complex and bulky AWD system designed to get the output of one engine to all four wheels with an electric motor. There are reasons that every production AWD EV has separate front and rear motors.They made AWD E30s at some point (or was it just the 5?) that might be compelling addition for a wagon with more torque than an M3...