Electric / hybrid 240z

[jmead]

Generally are the (relatively) low voltages dictated by the available batteries?

Don't get me wrong, 150V is nothing to play around with casually, but in the industrial controls world, where I work, I have never seen any system installed that was capable of producing the power necessary to drive a car that operated at voltages that low.

Fifteen to twenty years ago we used to use 300V servos a lot, but anymore when you get above 22kw, most installations will switch to a brushless 600V system. The reason frankly is that when it comes to efficiency, current is the enemy.

One of the links listed above had a discussion of someone's car which used a 1000A controller. That is just insane. High current necessarily means big, heavy wires, and big heavy motors. Increasing the voltage by a couple of powers of two reduces the size and weight of the wires and motor, and directly reduces the parasitic loses of the system.

Yeah, i've got a 1000Amp controller as well, and i've got probably 75 lbs worth of copper in the car just for the battery interconnects and motor cables.

This is just peak, however, a more normal cruising amperage would be more like 100 amps, much more reasonable.

I spent about 15 minutes thrashing it, probably 400A+ usage for several solid minutes, jumped out and felt the cables, cold, and the controller, barely warm. The motor isn't breaking a sweat with its big blower.

[jmead]

http://www.jumpcut.com/view/?id=CEEFB4120A8211DD8F60000423CEF5B0

Short video, really gave the motor mount a good test today. None of the burnout videos came out because it got too dark, will try again tomorrow.

[jmead]

[Derek]

Electric drifting how cool!

You've accomplished one thing for sure though. You have The people from Classic Z Car and HybridZ agreeing on something!

Derek

[Mat M]

Awesome!!! In a church parking lot???

oh, the memories of youth group in the church parking lot.... but I digress.

Thanks for starting this thread! I am very impressed and jealous that you have the drive (no pun intended) and the time to follow through wtih your work!!

[BadDog]

Don't worry about it being "show quality", its unique enough where it'll get a lot of interest!

Nice electric burnouts BTW but don't break your R180! :-)

1) If the "auxiliary power unit" is done by then it would make a fun day trip, though I still have a lot of work left before its show quality.

[jmead]

Don't worry about it being "show quality", its unique enough where it'll get a lot of interest!

Nice electric burnouts BTW but don't break your R180! :-)

Good advice, but if its gonna happen I might as well get it out of the way now.

Awesome!!! In a church parking lot???

oh, the memories of youth group in the church parking lot.... but I digress.

I haven't gotten the registration taken care of yet and its the only parking around here within reasonable distance. And if I'm going to wizz Jesus off at least I'm doing it in the most environmentally friendly way I can :nervous: I just had to see what it can do, but no more until I get it legal. Hopefully that will be very soon, I can't wait to get back behind the wheel!

[jmead]

Generator is f-i-n-a-l-l-y in the car. This part of the project seemed to drag on forever. I hope to get the wires run and some preliminary mileage numbers within just a few days. Next step is to get the exhaust fabbed up.

[BadDog]

Great news! Keep us posted :-)

[hls30.com]

Outstanding!

Will

[ozy]

dont know what to say, but i think this is legendary! id love to see a show condition electric Z. it would really blow a lot of people away