Harry,Did exactly what you propose, Big Matt. However, my setup was for snow, not for riding to work. I'm glad I don't have to do either.
Front motor was an ebikeling geared motor that I laced into a rim. Rear motor is a bafang geared motor I bought with the wheel already on it. Used only throttle for the front, and put it om the right side. I later turned it around to have it next to the grips. In the pic, it's in quite a ways.
In snow, I'd throttle up the front to get rolling, and PAS would kick in on the rear when I started pedalling.
I took it apart after one season. I caught bronchitis in Februrary and had it thru April.
View attachment 41872 View attachment 41874
Here’s what she looks like done. I hooked the single throttle and single PAS to both controllers with separate displays. I think I’ll likely end up keeping the front set to a slightly lower throttle and PAS setting than the back.
I haven’t opened her up yet, but I took her around the block and performance (get up) was unbelievable...
- 48v 20 AH on the rear hub
- 48v 20 AH on the back (2 identical 10 AH parallel).
- I was going considering running them all parallel then split to both controllers, but the fully charged voltage (between the front and back) is ~0.7 volts apart (54.8 vs 54.1), far enough apart. That’s too far for comfort. The 2 (10 AH) batteries that are run parallel are identical voltage, make and age/wear with identical BMS.
PS. You’ll notice my urban camouflage on one hub. Hint: They’re not 250/500 watt hubs, but 250 + 500 = 750... ;-)