Electric Minimoto help

[Daimatt]

Hi all,

I was given a non working electric minimoto and got it running with a trio of 6V batteries to replace the completely dead original 18V job.

This worked great...............until my daughter rode it about 20cm and dropped it. Now it just runs, only disconnecting the battery, main fuse or motor stop it.

I’m guessing the ESC is damaged but getting hold of the exact one is pretty impossible in this country so I’ve been looking for simple replacements. Any ideas? I’m no electrical guru so am a bit lost beyond needing an 18Vish brushed ESC, but they all come with different wiring to the existing one, can anyone help with how to get it running again?

I've attached a photo of the current ESC.
The red circle covers the power and motor connectors, black/red and blue/brown respectively.
The blue circle covers the throttle and brake connector. There is no brake light so I guess it overrides the throttle. Brown/green/red is the throttle, orange/black is the brake.
The black circle is the charger connection
The green circle cover the key/ignition connector although the bike loom only has one wire.

There is a main fuse on the bike that is wired into the motor cables so has nothing to do with the esc.

Thank in advance!

Matt

 

[vfr400]

There's a reference number on the label. Do a Google search for it. That's how I found one that looks identical to that.

You've blown the output mosfet/s. If you're any good at soldering, you can just replace it/them, which will be very cheap. Open the box and get the reference numbers off it/them.

 

[Daimatt]

The inside of the esc is covered in black translucent resin, I guess to protect it but it means removing the board and any components is bloomin' difficult!
I'll have a hunt for an esc with the same reference number.

Thank you

 

[Andy-Mat]

The inside of the esc is covered in black translucent resin, I guess to protect it but it means removing the board and any components is bloomin' difficult!
I'll have a hunt for an esc with the same reference number.

Thank you

I think that you are going the right way, but remember, a broken brake sensor will stop the motor running as well.
If you have access to an Ohm meter, its very simple to check that function.
From memory only (someone will correct me if I am wrong!), if the brake sensor has continuity between the two wires, the motor will not run, only when the brake sensor is "Open", will the motor run.
My apologies if it turns out that I have remembered it "backwards...."
regards
Andy