Wire mismatch with new 205QS motor and my stealth fighter f-37

[anonymous_slother]

I just bought a 205 QS 5T motor to install on my stealth fighter f-37 Gen 1 (old motor broke).

Tried to install myself but the hall sensor wires don't exactly match up from the e-bike to the new motor (differnet wire colours and adaptors on the bike and motor - images attatched)

Any ideas of how to match these up and get the new motor installed?

 

[Chalo]

If your plugs aren't compatible, you'll have to crimp new ones on or splice the old ones on your new wires. Test the motor with your prospective wire assignments before you stuff all the crimps into plug housings (or apply permanent wire splices), because the color codes may not match.

Rule number one of tinkering with e-bikes is to be smarter than the bike.

What broke on your old motor? How do you propose to keep the new one from failing the same way?

 

[anonymous_slother]

If your plugs aren't compatible, you'll have to crimp new ones on or splice the old ones on your new wires. Test the motor with your prospective wire assignments before you stuff all the crimps into plug housings (or apply permanent wire splices), because the color codes may not match.

Rule number one of tinkering with e-bikes is to be smarter than the bike.

What broke on your old motor? How do you propose to keep the new one from failing the same way?

Cheers for the reply mate! I'm happy to do some crimping and or splicing.

The part i'm struggling with is knowing how to properly assign the wires without causing any harm to the bike.

Honestly i'm new to ebikes and not sure why the motor broke, i'm actually fixing this ebike on behalf of my friend who just doesn't have time to fix it himself.

Would happily pay you for specific advice on how to do the install of the new motor if you know how to make that happen!

 

[amberwolf]

FWIW, motors don't usually fail; it's usually the controller or battery.

DD hubmotors typically last "forever" unless overheated from use beyond their capabilities, or physically broken at the axle, etc.

If it wasn't physically broken, what was done to determine the motor was the failed part? (just so we can help you make sure you get everything fixed and don't waste money or time on things you don't need, but that you do buy all the parts you do need).




That said, there are quite a few posts about matching QS motors' phase and hall connectors to various controllers, that have info on which wire is which in those connectors. The QSmotors big for sale thread in the items for sale new section probably has this info too.

You'll have to check with Stealthbikes in australia for the controller wiring informaiton, and how to tell it to "learn" the new motor, and/or how to program the new motor info into it, and/or find out if you will have to manually determine the phase/hall wiring combo (there are many posts about doing that, if you have to).


Then make sure your new torque arms or plates that you got with the new motor will fit your frame, and are securely attached to it, and/or the old torque arms or plates that you had with your old motor are intact, undamaged, and will fit your new motor's axle.

 

[anonymous_slother]

FWIW, motors don't usually fail; it's usually the controller or battery.

DD hubmotors typically last "forever" unless overheated from use beyond their capabilities, or physically broken at the axle, etc.

If it wasn't physically broken, what was done to determine the motor was the failed part? (just so we can help you make sure you get everything fixed and don't waste money or time on things you don't need, but that you do buy all the parts you do need).




That said, there are quite a few posts about matching QS motors' phase and hall connectors to various controllers, that have info on which wire is which in those connectors. The QSmotors big for sale thread in the items for sale new section probably has this info too.

You'll have to check with Stealthbikes in australia for the controller wiring informaiton, and how to tell it to "learn" the new motor, and/or how to program the new motor info into it, and/or find out if you will have to manually determine the phase/hall wiring combo (there are many posts about doing that, if you have to).


Then make sure your new torque arms or plates that you got with the new motor will fit your frame, and are securely attached to it, and/or the old torque arms or plates that you had with your old motor are intact, undamaged, and will fit your new motor's axle.

Thanks for your reply!

It’s actually my friends bike and I’m helping him to fix it up, he’s super short on time currently.

Just asked him now why he believes it was the motor that failed, so will get a reply shortly. Any key ways to determine what the actual issue is?

Appreciate the depth of your reply, going to do some more research and then go from there.

But first will see how my friend diagnosed that the motor was the problem.