Everything you ever wanted to know so you can build an EV

Lightweight / Folding / Portable EVs - seats optional
Lurzarac   1 µW

1 µW
Posts: 4
Joined: Jul 30 2018 9:25am

Re: Everything you ever wanted to know so you can build an EV

Post by Lurzarac » Aug 23 2018 10:52pm

Love to read your post on how you customized your scooter and i myself eager to do so as well. It just that i have zero experience on wiring and no knowledge on how the scooter actually works. I have just started to 'explore' my scooter and do some little research on how to upgrade my scooter. BTW i have a scooter which runs on 48v 500w motor. In order to upgrade my scooter, i had just bought a 60v 2000w chinese motor controller from alibaba site. The only problem is that it is nothing the same as my old controller. The wire color & number of the wires are not the same, the wire label is in chinese, although they try to translate it in english using the diagram, it is not the same and make it very complicated for me.

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ElectricGod   10 MW

10 MW
Posts: 2145
Joined: Nov 01 2015 5:24pm
Location: 3 OH 3

Re: Everything you ever wanted to know so you can build an EV

Post by ElectricGod » Aug 30 2018 6:10pm

Ebuilt wrote:
Aug 13 2018 9:26am
God, can you please clarify a little bit more about how to bridge the kill switch with a 1k resistor so that I can stop sparking my battery everytime I reconnect it for whatever reason.

Are you just squishing the resistor end wires between the two nuts of the kill switch itself?

I have both on the way in the mail. Thank you.
God...that's hilarious! I picked the name totally because it was snarky and irreverent. and from time to time I meet people on ES that take umbrage at the name...which is even more hilarious. I think they need to take a chill pill. I sure don't see myself as a "god" of anything.

anyway...back to your question...
The 1K resistor goes right across the screw terminals on the contactor. If oyu put a small switch in series with the resistor to cut all current flow, be sure to close the switch before closing the contactor. I think the current draw across the resistor is fairly negligible so I don't bother. Then again when off my EV's don't draw but a few mA anyway. The resistor wires could be directly put under the nuts, but there's a fairly good chance you will also break them off. I solder screw lugs onto the resistor wires. Be sure to cover the whole thing in heat shrink so you can't get shorts.
Last edited by ElectricGod on Aug 30 2018 6:13pm, edited 1 time in total.
ElectricGod...it's a joke...don't take things so seriously folks!

XB-502 Moped:
https://endless-sphere.com/forums/viewt ... 0#p1222730

Currie scooter:
https://endless-sphere.com/forums/viewt ... 7#p1227407

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ElectricGod   10 MW

10 MW
Posts: 2145
Joined: Nov 01 2015 5:24pm
Location: 3 OH 3

Re: Everything you ever wanted to know so you can build an EV

Post by ElectricGod » Aug 30 2018 6:11pm

Lurzarac wrote:
Aug 23 2018 10:52pm
Love to read your post on how you customized your scooter and i myself eager to do so as well. It just that i have zero experience on wiring and no knowledge on how the scooter actually works. I have just started to 'explore' my scooter and do some little research on how to upgrade my scooter. BTW i have a scooter which runs on 48v 500w motor. In order to upgrade my scooter, i had just bought a 60v 2000w chinese motor controller from alibaba site. The only problem is that it is nothing the same as my old controller. The wire color & number of the wires are not the same, the wire label is in chinese, although they try to translate it in english using the diagram, it is not the same and make it very complicated for me.
The best teacher is experience.
Dive in!

you will learn loads just by trying to figure out how the thing works. Don't be afraid to take apart your motor controller and look at the parts inside. On balance, everything adds to what you know.
ElectricGod...it's a joke...don't take things so seriously folks!

XB-502 Moped:
https://endless-sphere.com/forums/viewt ... 0#p1222730

Currie scooter:
https://endless-sphere.com/forums/viewt ... 7#p1227407

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