You got any tips for how to setup the component's to get the right gearing for a leaf motor and rock crawling?

thanks bud! I was wondering how I was gonna clean all this stuff up.

are these the MOSFETs that I need to replace?

ok added final contactor with economizer. now the inverter board lights are machine gunning on and off. the machine gunning rate has increased as well. shut it right off...

still got to figure out if the fets are shorted.

Got a zeva BMS. comes with 4 slaves.
1000 bucks or best offer

ok ordered one more contactor with economizers attached. just to be safe.

can't see any burn marks on front of logic board indicating a short. might check the back. think I gotta watch the vid for checking for a short with my meter. guy uses his finger to close the gate on YouTube. pretty cool. not sure if that would work checking the fet attached to logic board. maybe?

I bet I should just have all three with economizers.

those are the contactors I bought on ebay

watching videos about replacing FET on YouTube .

realized I still was using 2 Tesla contactors that were working. replaced the negative contactor with one with an economizer. should I buy a third contactor with an economizer for the precharge? even though it's working fine?

was using stock Tesla contactors, but have upgraded to some with the economizers build into them.

used to have a real hard time getting the old phone to connect to the wifi. it was like some times it would work most the time it wouldn't. even with my wifi box right next to it. bought a 100 ft Ethernet cord to put it right next to it in my garage.

yeah my parameters aren't showing up. I could adjust it with my last phone before I dropped it out of my treehouse accidentally and it smashed against a rock destroying my phone. maybe my dad's phone would allow me to adjust my parameters. I'll have to try that.

I can get my phone to connect to logic board, but I can not adjust parameters so I'm not exactly sure what udc min and udc max are set too.

I think I have my 12v system wired up right. I can get the ignition and precharge contactors to close but then when I hit my start switch my main contactor will not stay shut. It will only turn on and off rapidly like
a machine gun. Any ideas what I should try next?

just realized I had the relay 12v power source coming off the battery even though I have been informed to have power coming off the main board. If all the inputs are 12 volts, how can I find a output that is 12v?

Now I am just wondering how I will know which pin is the freewheeling diode.

I will keep researching. I love learning about this stuff. pretty cool!

Anyone know if the uln2003chip is listed on this diagram?

ok just hooked up my contactor I purchased on eBay with built in economizer. still got the machine gunning on and off contactor problem...

maybe I need to disconnect the freewheeling diode of uln 2003 chip...

gotta learn what that means now.

ok just hooked up my contactors I purchased on eBay with built in economizer. still got the machine gunning on and off contactor problem...

maybe I need to disconnect the freewheeling diode...

gotta learn what that means now.

just found this. might just need a contactor with an economizer built into it.

Re: If you're having start problems, please read here Post by Kevin Sharpe » Sun May 10, 2020 1:03 am retrEVnoc wrote: ↑Sat May 09, 2020 6:34 pm I’ve since realized these contactors get extremely hot from 12v power when closed for extended periods of time...not sure why. Tesla contactors require eco...

you think it's on the Tesla inverter board or something, can't really see through the glue? I would buy one I guess if ya think it's bad.