In November 2019, I decided to electrify my Yamaha YSR50 motorcycle that I had had since 1988 with a kit including a Kelly KAC8080I controller and a Motenergy ME1507 motor.
Kelly's controller got a burnout... I replaced it with a SEVCON GEN4 8035 80V 350A..
The next step: electrify a children's go-kart for my 5 year old daughter! with a SEVCON GEN4 size 2 controller.