I've just about finished installing a Bafang BBS02 on my Pacific Cycles Handy handcycle.
The speedometer quit working, I think it's just a magnet issue, I'll check later.
I did one lap up and down my block and everything seemed pretty good, except for the speedometer and poor brakes.
I think I need to replace the brake pads, they're a dozen years old and perhaps they've lost their grippiness. New and hopefully better brake pads are on their way.
I feel pretty comfortable with riding the handcycle now, but will avoid hills due to the poor braking.