School me on hub drives

[spinningmagnets]

I should have said that "S" and "P" stand for Series and Parallel, regardless of chemistry type. Each chemistry has its own voltage per cell (lead-acid/LiPo, LifePO4, NiMH, etc). A 6S NiMH pack will have a slightly different voltage than a 6S LiPo pack.

"C" is just as Dogman said, and it stands for the packs Current (volume of electrical flow) capability.

 

[TylerDurden]

What if someone basically wanted a low powered scooter that was focussed on range ( 12 - 55 miles ) , lower speeds ( 8 - 12 mph ) would lipos be any use then or would you be risking too much ?

Lipo delivers more power for weight and size, with more potential for fire.

A small, slow system would be fine with LiFePO4: less power for size and weight, but no hassle and no worry (a good trade IMO).

 

[dogman dan]

My rule of thumb for 1 ah= 1 mile applies for 20-25 mph, riding full throttle, light pedaling( no sweating or heavy breathing), and perhaps 500 vertical feet of climb and descent along the way on shallow grades. Weather contidions normal, IE light wind but not above 10 mph. The range test route I rode repeatedly to arrive at the rule of thumb was a large square, so some of the ride was uphill, some down, some flat. And some into the breeze, some crosswind, and some downwind. 180 pound rider, 26" wheel MTB, upright riding position.

The rule of thumb also allows for a 10-20% reserve left in the battery after the riding. Typically I could ride 22 miles at 25 mph, and about 26 miles at 20 mph, on a 36v 20 ah pingbattery. So if you are looking for range at 100% discharge at 23 mph, that would be around 25 miles, or 1.25 miles per AH.

Slowing down to 15-17 mph though, will increase range to about 30 miles, and slowing to 12 mph and pedaling a lot, I once did 39 miles.