tomjasz
Well-Known Member
- Region
- USA
- City
- Minnesnowta
BBS02(A) was replaced in 2016 with the BBS02B. Early BBS02B versions had the same problem FET's.My rationale for considering the BBS02b was its supposed to have less problems with the controller than the BBS02 ?
BBS02B is a pedalers motor. Taking off from dead stops without shifting as one would with a non-motorized bike will kill a BBS02B. Proper shifting is critical. There is no inherent heat issue IF it's ridden as an assist and proper up and downshifting takes place.
The BBSHD is another beast. Used by pedicabs and cargo bikes. BUT the biggest complaint is "clown pedaling". Little pedal resistance for higher speeds. Sorry that's a clumsy description...
I sold all three of my BBSHD motors in favor of BBS01B 36V 500W. For me, a more natural feeling ride and I use my gearing effectively. I've been riding my wife's 36V 350W BBS01(A) from 2014.
16.8MPH in 4th of 7 gears. For me quite adequate.
I beat the dickens out of my last BBSHD I rode it like an electric scooter always by throttle.
It flew at 33MPH and it was on a 7 speed and I left it in 4th gear most of the time. Taking off from dead stops by throttle with no heat issues. In the end, 33MPH was just plain dangerous in my opinion. I upgraded the rim brake pads but the panic stop distance from 30-33MPH was abysmal.
We're waiting to see what Bafang does to the current kit line of mid drives. Hoping they aren't planning on phasing them out for the proprietary battery included kits.
I'm in the midst of converting a trike to a Grin 9C with Statorade and Hubfins for cooling. I'm convinced Bafang is going to leave us "out in the cold" with no decent parts stream. Pre 2016 motors have no parts stream. When they break down, it's over unless parts were stashed. In my case I have a backup motor with 150 miles on it.
I'd look to @linklemming and other actual users to sort the GMAC performance. Don't bother with opinions from non-users. They'll simply repeat what they read on forums.
ebikes.ca has some great kits. I especially like the Grin controllers that allow me to use any of my batteries, 36V, 48V, and 52V.
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