ebike Motor stuttering and jerking from time to time

Chaser

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My ebike motor is stuttering and jerking, I'm wondering if there is any way to tell if it is the motor or the motor controller causing this problem?
 

Edwardo

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It could be a loss of connection. I have seen an ebike bottle battery that broke internally and caused the same problem whenever the connection was lost.
 

BobW

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Check that the brake lever isn't cutting off power to the controller, or any loose connectors. When does this happen? If when you hit a bump in the road, or anything else.
 

Will_bridges

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Check that the brake lever isn't cutting off power to the controller, or any loose connectors. When does this happen? If when you hit a bump in the road, or anything else.
Hi I have this same issue it happens when just riding on normal surfaces like pavement or roads but happens more when going up hill
 

hugh

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One of my trikes was doing that, turned out the battery was making a poor connection to it's cradle. That battery is what I think is called a dorado style, might be wrong on that but it loads from the side. The fix was using a couple velcro straps wrapping around the battery and frame to keep it tight. Plus I have moved that battery over to another homebuilt and positioned it in a direction where down makes the battery fit into it's socket naturally.
 

Breath1

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Hi I have this same issue it happens when just riding on normal surfaces like pavement or roads but happens more when going up hill
I have the same issue with a Bafang mid drive ultra G510 1000w motor. It happens when going up an incline. I haven't found an answer for it yet. How can I check if the problem is the hall sensor?
 
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