The Mac Hub Motor is a High Power, High Torque, Geared Hub Motor intended for Spoked Bicycle wheels from 16” to700C. Rated Output power is typically between 500 to 1000W depending upon the motor winding selected and the operating voltage. An internal 5:1 planetary gear with clutch is implemented. New stronger Composite Gears are now standard on the 500W motors to ensure a long trouble free life. The gear reduction allows hub motor to spin at a higher and more efficient rpm greatly improving the starting torque and hill climbing ability when compared with comparable Direct-Drive motors, whilst also being smaller and lighter than a comparable DD motor. The clutch offers minimal drag when not under power. Unlike the majority of geared hub motors on the market, the Mac 500W is built for the high power demands of the US market, not the highly restricted EU market. The slower wound versions could still be used and stay within the EU speed limit, for those requiring more hill climbing ability than the typical 250W motors can offer.

6 turn high speed hub motor - 400rpm loaded at 36V, 520rpm loaded at 48V

8 turn standard hub motor - 320rpm loaded at 36V, 400rpm loaded at 48V
10 turn torque hub motor - 255rpm loaded at 36V, 320rpm loaded at 48V
12 turn low speed extra torque hub motor - 200rpm loaded at 36V, 250rpm loaded at 48V
Accepts disk brake and 7 speed freewheel with standard 135mm rear dropout.
As a guideline you can expect approximately the following real world speeds for the above windings on 12S LiFePO4 battery pack (approximately 38V under load) in a 26" rim on the flat, no pedaling with a rider plus bike weight of approximately 130kg total (286pounds):

6T - 45kph (36v), 65kph (48v)
8T – 39kph (36v) , 50kph (48v)
10T – 32kph (36v) , 40kph (48v)
12T – 25kph (36v) , 32kph (48v)
Spoke Radius - 172mm
Weight - 4.2kg
Black Paint Finish