I had a similar issue. Took motor out of casing. Could see was very rusty. Stator seized to the rotor. Will need a gear puller to pull the rotor out of the stator. Magnets are very strong. Cleaned up good. Used a dermal tool. Also check bearings. Mine had a seized bearing. New motor from rad about 300. You will get motor and wheel already laced ready to go. Can find on eBay also. Have to be carefull are getting right motor.

Yes caught in rain last fall. Then put away for the winter. Lesson learned.

Also want to thank radguru1234 who posted a video about how to take motor apart. Gave me the confidence to take on the job.

Sorry area 13

Thanks. Decided to take a step further. Magnets apearrd to be rusted to stator. Also wanted to check bearings. Got a gear puller to pull it apart. Was completely rusted also had one bearing seized. Replaced bearings 20.00 dollars. Cleaned up the rust ( dremal tool). Put back together. Seems to work fine. Thanks for the help. Back tire from rad would be 300.00 but was out of stock. They could not tell me when would be back in stock. Motor from arra 23 was also about that price. Thanks for the help.

Took motor apart. Appears to be bad. Took gears off put back in housing. Plugged motor in does not run. Does anyone know what a new wheel and motor from rad will cost. Do not want to relace wheel. Thanks again for the help.

Yes! Mechanical disc brakes. I believe pulling the brake lever cuts power to motor. Wheel should still roll back or forward with brake lever disingaged.

Quote from: inoxa on July 25, 2024, 11:19:30 AM

Quote from: Collie58 on July 24, 2024, 01:22:06 PMI have a 2018 rad runner. Back tire only will roll frontwards jams tight going backwards. Brakes are good. I suspect bad motor. Not sure how to test. Do not want to use with new controller until I know is good. Do not want to burn up controller again.

Interesting.  Does it do this with the rear brakes unplugged? 

Quote from: inoxa on July 25, 2024, 11:19:30 AM

Quote from: Collie58 on July 24, 2024, 01:22:06 PMI have a 2018 rad runner. Back tire only will roll frontwards jams tight going backwards. Brakes are good. I suspect bad motor. Not sure how to test. Do not want to use with new controller until I know is good. Do not want to burn up controller again.

Interesting.  Does it do this with the rear brakes unplugged? 

I have a 2018 rad runner. Back tire only will roll frontwards jams tight going backwards. Brakes are good. I suspect bad motor. Not sure how to test. Do not want to use with new controller until I know is good. Do not want to burn up controller again.

I naught a new controller and display. I found the problem circuirt. Unplugged the taillight and display came on. Thanks unplugging circuits one at time until problem solved seems the route to go. Thanks again.

Can I unplug all connections except in going to the display. Should it turn on?  Wondering if a short somewhere. If display turns on then start plugging connectors back together see whitch one causes the problem. Does this sound reasonable.

Wiring looks ok. Could rad have given me a controller and display that are not compatable. Wires all plug in fine.

Ok! Thanks will do.

I have a 2018 rad runner. Had no power to anything other than battery to controller. Replaced controller and led display. Original eguipment. Now when press display to turn on power battery led and pas led just flash once and nothing else. Wondering how to proceed from this point.