My first electric bike

[gillettadam]

Hi everyone. I have just joined the forum as I have been given an electric bike (A Thompson Euro Tourer). This sounds great, but the motor cables have been in a bit of an accident and need replacing. I have removed the motor and have worked out what I'm going to do, but I wondered where I would get some cable suitable for it. I did think trailer lighting cable but that is only 7 core whereas this is an 8 core hall cable. any help would be appreciated. I was given the Bike because the old gentleman who owned it originally (90 I am told so I can call him old being 16 myself!) crashed it a few times and then the motor cables snapped so he gave it to a friend of my uncle's to fix, and when the gentleman was told what had happened he decided it best to buy a new bike, and give the old one to my uncles friend who then passed it to me to fix.

Cheers Adam

 

[Deleted member 4366]

Hi everyone. I have just joined the forum as I have been given an electric bike (A Thompson Euro Tourer). This sounds great, but the motor cables have been in a bit of an accident and need replacing. I have removed the motor and have worked out what I'm going to do, but I wondered where I would get some cable suitable for it. I did think trailer lighting cable but that is only 7 core whereas this is an 8 core hall cable. any help would be appreciated. I was given the Bike because the old gentleman who owned it originally (90 I am told so I can call him old being 16 myself!) crashed it a few times and then the motor cables snapped so he gave it to a friend of my uncle's to fix, and when the gentleman was told what had happened he decided it best to buy a new bike, and give the old one to my uncles friend who then passed it to me to fix.

Cheers Adam

There should be three thicker wires for the motor power and 5 thinner ones for the hall sensors. For the thin ones, you can use any thin wire because there's very little current. For the motor, you need
suitable high current wire. It's normally PTFE coated and not easy to come by. You could use any wire with a rating of about 20 amps, but you might find it too thick to get through the hole in the motor.

 

[gillettadam]

Thanks, I'm going to an autojumble on Saturday so will keep an eye out for some PTFE insulated wire. I have traced the wires back to the control box and I think they will be fairly simple to reconnect at that end. I think my soldering iron will have to venture out for the motor end of operations though!

 

[gillettadam]

I've managed to solder the motor wires back together, and am now in the process of rebuilding the bike. I'm going to make some modifiacations to the cable to protect it in the event of an accident, and the front sprocket was badly bent so I'm replacing that. There is a lot of plastic that has to go back on it, but after that it should be redy to go!

 

[PennyFarthing]

Wow, impressed with your techno-know-how! Prepare yourself for some fun riding.

Come on over (if you havent already) to the main section of the form and chat away.

 

[gillettadam]

Hey PennyFarthing, I don't know a huge amount about things, but I'm into restoring vintage machinery so just applied that to the bike. I managed to get it to go, and despite it being amazing on the hills was shocked at how much battery the lights used. I'm thinking of getting 3 mobility scooter batteries and making a secondary battery for it just in case I have to do a two way trip in quick succession

 

[shemozzle999]

Hi gillettadam,
Well done for repairing your bike, if you want complete peace of mind, I have a new replacement 9 way motor cable available which has a weatherpoof plug and socket at the motor end.
I can also provide the standard crimp connector for the Hall sensor wiring and motor bullet crimp connectors for the controller end.
Private Message me if you are interested.