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Flipsky motor and flipsky FSESC, can't move when weighted/under load.

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adamgil801
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Last seen: 1 year 9 months ago
Joined: 2022-06-29 04:44
Posts: 1
Flipsky motor and flipsky FSESC, can't move when weighted/under load.

I'm new to all this, including this forum, hope this is the right place to post this issue I'm having. So yeah, I'm running a "Flipsky BLDC Belt Motor 6374 190KV 3500W" also a, "FSESC 4.12 50A Based on VESC4.12" and a, 36V 20ah Lithium with a BMS that allows 35amp peak and 30 amp continuous. I've fab'ed the motor onto my son's 4wheeler, its pretty small, weighs 80lbs, he weighs 40lbs, 13 tooth motor sprocket driving a 64 tooth axle sprocket, tires are 12" diameter. I've read around on multiple forum threads, I've messed with all kinds of motor settings with no luck, my current settings are just after doing a motor detection, no modifications to settings. That google drive link should hopefully work. So, the throttle works perfectly, with the tires in the air, the motor spins up very quickly and sounds great, but when I try to get the 4wheeler to move its own weight, the motor just doesn't make it happen, let alone with my son on there. When the wheels are in the air, I can grab one while throttling and easily hold it back.

I'd appreciate any help, thanks.

Here is a video of my settings: https://drive.google.com/file/d/14wzOL2rI4plnYYt2A9Gfu3lxuHFgMPUI/view?u...

Link to the ebay battery: https://www.ebay.com/itm/313544690535?mkcid=16&mkevt=1&mkrid=711-127632-...

Indy8976
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Last seen: 1 week 3 days ago
VESC Free
Joined: 2022-06-20 16:31
Posts: 4

I have recently approached this world, but I hope I can help....

"BMS that allows 35amp peak and 30 amp continuous"--> I see in your setup batteryMaxcurrent 99A that's a lot more than 35A. So the question is: Why the BMS does not cut off current?

So, I think the problem could be the battery that does not give the current the motor needs to make enough torque to move the 4wheeler.

Is the battery good/new? Do you have a way to test the current it is able to deliver? Try another battery?

Does the current arrive to the motor?

I am non really addicted in this software, may be some one more expert than me can help you this way.

 

 

Indy8976
Offline
Last seen: 1 week 3 days ago
VESC Free
Joined: 2022-06-20 16:31
Posts: 4

I have recently approached this world, but I hope I can help....

"BMS that allows 35amp peak and 30 amp continuous"--> I saw in your setup batteryMaxcurrent 99A that's a lot more than 35A. So the question is: Why the BMS does not cut off current?

So, I think the problem could be the battery that does not give the current the motor needs to make enough torque to move the 4wheeler.

Is the battery good/new? Do you have a way to test the current it is able to deliver? Try another battery?

Does the current arrive to the motor?

I am non really addicted in this software, may be some one more expert than me can help you this way.