paulmorrishill
New Member
Hi, I bought a mobility scooter off of ebay for £36, for a bicycle replacement vehicle. It worked great for a bit but while I was doing a range test to see if it was a worthwhile project, i neglected to monitor the motor temperature as riding at 15mph was too much fun. The motor lasted about 6 miles before it finally gave up and the enamel burnt off of the windings and caused a short. So I took the motor off disassembled it, and unwound the windings, stupidly I neglected to take any photos the only data I recorded were the number of turns and coil width, as well as the wire thickness.
Luckily I had a smaller 100w dc motor available that I could have a look at for an idea of what it should look like. I wound the motor according the the layout of the smaller one with brand new wire, unfortunately the motor does not perform as it should. It starts alot slower than it should taking about 1 - 2 second to reach its maximum rpm. Not only that but no load conditions it draws 6 amps which is a bit ridiculous. After running for about a minute the brushes have increased in temperature by about 60 degrees. I have checked for shorts between the coils and the armature there are none, nor are there shorts between the commutator plate things.
I am utterly stuck
After searching the internet for hours I found a website with a wiring diagram for an electric scooter motor that shows exactly how I have wound this motor. I can provide photos if it would be of any extra help in diagnosing.
This motor is about 800-1000w (based on dimensions of similarly constructed motors (the label was worn away))
I don't want to replace the motor because it would be very expensive, around £80, well for me at least. Not to mention trying to get the motor to connect to the current gearing for the mobility scooter.
Thanks in advance for any help, I am on the point of scrapping it or waiting for a new mobility scooter to come up on Ebay.
Paul
Luckily I had a smaller 100w dc motor available that I could have a look at for an idea of what it should look like. I wound the motor according the the layout of the smaller one with brand new wire, unfortunately the motor does not perform as it should. It starts alot slower than it should taking about 1 - 2 second to reach its maximum rpm. Not only that but no load conditions it draws 6 amps which is a bit ridiculous. After running for about a minute the brushes have increased in temperature by about 60 degrees. I have checked for shorts between the coils and the armature there are none, nor are there shorts between the commutator plate things.
I am utterly stuck
After searching the internet for hours I found a website with a wiring diagram for an electric scooter motor that shows exactly how I have wound this motor. I can provide photos if it would be of any extra help in diagnosing.
This motor is about 800-1000w (based on dimensions of similarly constructed motors (the label was worn away))
I don't want to replace the motor because it would be very expensive, around £80, well for me at least. Not to mention trying to get the motor to connect to the current gearing for the mobility scooter.
Thanks in advance for any help, I am on the point of scrapping it or waiting for a new mobility scooter to come up on Ebay.
Paul