I installed a BD36 volt brushed kit on my 90 year old father in laws Miami Sun Adult Trike about 2.5 years ago.
Gramps uses the bike 6 days a week pulling his golf bag/cart about 3 miles to his golf club.
At the time I went with the brushed motor for the additional torque so Gramps wouldn't need to pedal the bike.
About 3 months ago I notice the range decreased significantly and replaced the batteries.
That helped a lot, but now the motor is making a loud almost grinding sound.
I'm guessing the brushes are shot and need to be replaced.
As some of you have noticed, it can be a challenge to get help from WE...
So I thought I'd post here and see if anyone else can help.
Also - I see the new brushless motor has about the same torque as the brushed motor.
Would it make sense to just upgrade to a new motor and controller??
Keeping in mind that Gramps really can't pedal much - so the motor needs to do it all for him.