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  #31  
Old 03-28-2017, 10:27 PM
foxr foxr is offline
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Default Re: 1988 CRX with a DIY controller and nissan leaf motor

I will need roughly 160kw to obtain the wanted acceleration. What is your opinion off the top of your head to what battery you would think about using to obtain this in such a small space. The maximum height is 210mm, trying to find the full specs on the pan in the smart. I mean would it be possible to re-configure the leaf battery even if smaller clear down to 17kwh worth or would I need to custom build something out of 2 volt packs, all just theory I know but your knowledge is by far better than 99% of those I've seen. Thank you for your time, seriously!
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  #32  
Old 03-28-2017, 10:41 PM
Arlo Arlo is offline
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Default Re: 1988 CRX with a DIY controller and nissan leaf motor

Quote:
Originally Posted by foxr View Post
I will need roughly 160kw to obtain the wanted acceleration. What is your opinion off the top of your head to what battery you would think about using to obtain this in such a small space. The maximum height is 210mm, trying to find the full specs on the pan in the smart. I mean would it be possible to re-configure the leaf battery even if smaller clear down to 17kwh worth or would I need to custom build something out of 2 volt packs, all just theory I know but your knowledge is by far better than 99% of those I've seen. Thank you for your time, seriously!
Hmmm thats not easy. Remember you need room for wires and contractors and fusing and busbars then the enclosure etc.

Also the leaf battery is an advertised capacity. The 24kw leaf battery is about 18-20 kw usable. So you will need more or less ALL of a 2015 or newer leaf battery. What you want is not easy and cheep....
You can try to find something very power dense like the KERS cells lol
Or you can talk to John metric and buy the racing cells he sells...

Also I would be willing to bet you find 160kw in the real world gives you 5.5-6 sec 0-60. You are not making 160 kw the whole time You are making what should be a flat torque curve to say 60-70km/h (depending on voltage) then the HP will peak where the torque starts to fall off but with field weakening you will try to flatten the HP curve above the peak. I bet you need 200kw (into the system) remember also the wheels will not see 200kw its whats going into the controller and motor - losses.

Seriously aim for 200kw So I think you can make the 2015 leaf battery make 200kw for a burst on a warm day with a full charge.....
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Electric CRX With DIy controller and Leaf motor.
https://endless-sphere.com/forums/vi...p?f=30&t=63982
Yamaha E-YSR with 15kw DIY BLDC controller!
http://www.youtube.com/watch?v=91pGd...6Y37xYFFPRdPhw
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  #33  
Old 03-28-2017, 11:38 PM
Duncan Duncan is offline
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Default Re: 1988 CRX with a DIY controller and nissan leaf motor

Hi Foxr
I'm using most of a Volt battery - 14Kwhrs worth
And I currently take up to about 300Kw out of it - seems to be holding up pretty well

http://www.diyelectriccar.com/forums...ghlight=duncan
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  #34  
Old 03-29-2017, 12:07 AM
Arlo Arlo is offline
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Default Re: 1988 CRX with a DIY controller and nissan leaf motor

Quote:
Originally Posted by Duncan View Post
Hi Foxr
I'm using most of a Volt battery - 14Kwhrs worth
And I currently take up to about 300Kw out of it - seems to be holding up pretty well

http://www.diyelectriccar.com/forums...ghlight=duncan
Very cool. Yes I forgot I was recently pointed at Hybrid packs like the volt uses as they are more power dense.

I should look for cells from them my self
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Electric CRX With DIy controller and Leaf motor.
https://endless-sphere.com/forums/vi...p?f=30&t=63982
Yamaha E-YSR with 15kw DIY BLDC controller!
http://www.youtube.com/watch?v=91pGd...6Y37xYFFPRdPhw
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  #35  
Old 03-29-2017, 06:30 PM
Smilly_mike Smilly_mike is offline
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Default Re: 1988 CRX with a DIY controller and nissan leaf motor

Just wow !
Impressive work, bravo.
I am building electronics since 30 years and you do nice work !
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  #36  
Old Yesterday, 09:47 AM
Arlo Arlo is offline
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Default Re: 1988 CRX with a DIY controller and nissan leaf motor

Just about to take it apart and put the 800a igbts back in it....

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Electric CRX With DIy controller and Leaf motor.
https://endless-sphere.com/forums/vi...p?f=30&t=63982
Yamaha E-YSR with 15kw DIY BLDC controller!
http://www.youtube.com/watch?v=91pGd...6Y37xYFFPRdPhw
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