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1986 Honda CRX (EM57 2013 Leaf Motor)
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425 Posts
Discussion Starter · #1 · (Edited)
First post so I'm a noob and I know very little about what is needed for an EV.

From what I understand, the 500e has a Bosch SMG 180/120 motor. Would the Scott Drive SD250 AC motor controller work with it? Do I still need an inverter too?

The motor appears to be an AC 3-phase motor with a resolver (excitor,sin,cos) with two wires for temperature.

Context:
I have a Fiat 500e 2015 for parts. I'm looking to take parts from it to convert a Honda CRX 1986 into an EV.
I'd prefer to use the rest of Fiat 500e parts like controller and inverter but I'm unsure if I'll be able to get it working as the Fiat is very sensitive and I'm not sure I'll be able to clear all the canbus errors.

Bonus:
If someone can point me at a guide which can give me a crash course on all the parts needed to make an EV work (AC Motor) and why then that would be appreciated. It seems AC isn't very popular due to its difficulty but I don't quite know why yet.

I'm also learning how to log and decipher the canbus in case I can actually trick the 500e computer or maybe even hack or reprogram it... if someone knows where to find that info I'd appreciate it too since I haven't found it yet but will keep searching.


EDIT (2022-07-14):
I ended up not going forward with the 500e as the system is heavily locked and it was worlds easier to just use Nissan Leaf parts which are well documented and supported.

My build is fully functional in case you're curious:
1986 CRX EV conversion (Nissan Leaf Donor) - In Progress
 

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Joined
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5 Posts
First post so I'm a noob and I know very little about what is needed for an EV.

From what I understand, the 500e has a Bosch SMG 180/120 motor. Would the Scott Drive SD250 AC motor controller work with it? Do I still need an inverter too?

The motor appears to be an AC 3-phase motor with a resolver (excitor,sin,cos) with two wires for temperature.

Context:
I have a Fiat 500e 2015 for parts. I'm looking to take parts from it to convert a Honda CRX 1986 into an EV.
I'd prefer to use the rest of Fiat 500e parts like controller and inverter but I'm unsure if I'll be able to get it working as the Fiat is very sensitive and I'm not sure I'll be able to clear all the canbus errors.

Bonus:
If someone can point me at a guide which can give me a crash course on all the parts needed to make an EV work (AC Motor) and why then that would be appreciated. It seems AC isn't very popular due to its difficulty but I don't quite know why yet.

I'm also learning how to log and decipher the canbus in case I can actually trick the 500e computer or maybe even hack or reprogram it... if someone knows where to find that info I'd appreciate it too since I haven't found it yet but will keep searching.
Any updates with your project?
 

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Joined
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4 Posts
First post so I'm a noob and I know very little about what is needed for an EV.

From what I understand, the 500e has a Bosch SMG 180/120 motor. Would the Scott Drive SD250 AC motor controller work with it? Do I still need an inverter too?

The motor appears to be an AC 3-phase motor with a resolver (excitor,sin,cos) with two wires for temperature.

Context:
I have a Fiat 500e 2015 for parts. I'm looking to take parts from it to convert a Honda CRX 1986 into an EV.
I'd prefer to use the rest of Fiat 500e parts like controller and inverter but I'm unsure if I'll be able to get it working as the Fiat is very sensitive and I'm not sure I'll be able to clear all the canbus errors.

Bonus:
If someone can point me at a guide which can give me a crash course on all the parts needed to make an EV work (AC Motor) and why then that would be appreciated. It seems AC isn't very popular due to its difficulty but I don't quite know why yet.

I'm also learning how to log and decipher the canbus in case I can actually trick the 500e computer or maybe even hack or reprogram it... if someone knows where to find that info I'd appreciate it too since I haven't found it yet but will keep searching.

Hi,
I understand you are now converting your CRX using a Leaf donor but I am wondering if you could help me regarding the Fiat 500e motor.
I am researching a motor for a low power conversion in Australia and I can get a Bosch 180/120 from a hybrid axle. I am needing some help in determining if the Fiat 500e motor is wound the same as the Hybrid application.
Do you still have the motor? If so, would you be able to measure the resistance across the windings? That way I can compare the resistance to the hybrid application and see if it is wound the same.

Thank you for your time.

Kind regards,

Christian
 

· Registered
1986 Honda CRX (EM57 2013 Leaf Motor)
Joined
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425 Posts
Discussion Starter · #4 ·
Hi,
I understand you are now converting your CRX using a Leaf donor but I am wondering if you could help me regarding the Fiat 500e motor.
I am researching a motor for a low power conversion in Australia and I can get a Bosch 180/120 from a hybrid axle. I am needing some help in determining if the Fiat 500e motor is wound the same as the Hybrid application.
Do you still have the motor? If so, would you be able to measure the resistance across the windings? That way I can compare the resistance to the hybrid application and see if it is wound the same.

Thank you for your time.

Kind regards,

Christian
I don't have the motor. I ended up not disassembling the 500e and don't have the car anymore. There were too many challenges with getting the data I needed to use that motor for my project and I've since completed my build with Nissan Leaf parts which are very accessible and well documented.

This guy was the only guy I found that really tried but he also failed and he suggested I not try to use the 500e. He might still have the motor so you can ask him:
 
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