Specifications

Motors

Motor Type:
Brushless DC with EcoSpeed Velociraptor intelligent motor controller

Rated Output Power*:
1000 Watts (EcoSpeed large frame motor

Motor Operating Voltage Range†:
Velociraptor Controller: 18-60V

Maximum Motor RPM:
Large Motor: 3600 rpm

Current Limit:
Velociraptor Controller: Programmable up to 1500 Watts total input power♦

Motor Efficiency:
Approx 90%

* We rate our motors based on the power that they can usefully supply in typical e-bike operation. This means you can get the full rated power "almost" continuously. The Velociraptor controller will automatically reduce power if the motor and controller are pushed so hard that they begin to overheat. This will typically happen on very long and steep grades or continuous top speed running on very hot days.

† With a geared mid-drive system such as ours, performance is mostly determined by motor current. Voltage is not as important. We recommend 36 Volt or 48 Volt battery systems for our Electric Mountain Drive, and 48 Volt nominal systems for the Electric Mid-Drive, though either will work at either voltage.

♦ Maximum current is usually determined by the battery. The Velociraptor controller cannot be programmed for more current than the battery can safely supply. Also, the current limit cannot be set to allow the 1500 Watt power limit to be exceeded.

Electric Mountain Drive

Weight, large motor
approx 9 lbs (4.1 kg)

Maximum torque at crankset (large motor):
82 N-m

Gearing†

Mountain-Drive Reduction Gearing:
Planetary Gear (large motor): 4.79:1
19T over 85T sprocket set: 4.47:1
Overall: 21.4:1

Electric Mid-Drive

Weight, typical large motor
10.5 lbs (4.8 kg)

Maximum torque at center drive spindle (large motor):
46 N-m

Gearing*

Mid-Drive Reduction Gearing:
Planetary Gear (large motor): 4.79:1
48T #25 sprocket: 2.53:1
Overall: 12.1:1

Mid-Freewheels:
Standard: 18T
Options: 16T,17T,19T,20T,21T, 22T

Mid-Sprockets:
Standard (20" rear wheel): 26T
Standard (26", 700C rear wheel): 24T
Options: 28T, 30T

* The motor gearbox unit on the Mountain Drive directly drives a freewheeling crankset. Therefore the motor has access to the full range of the bike's gearing, both front and rear. The motor rpm is the rider's cadence multiplied by the overall reduction ratio.

† Mid-Drive reduction gearing is from the motor shaft to the mid-drive spindle. The overall ratio is the ratio of motor shaft speed to mid-drive spindle speed. The mid-freewheel and mid-sprockets turn at spindle speed. The mid-freewheel is driven by the front chain which connects to the bike's crank assembly. The mid-sprocket drives the rear chain which connects to the rear derailleur or internal hub gear assembly. The ratio of mid-sprocket to mid-freewheel tooth counts is a step-up in gearing provided to the rider by the mid-drive which allows for more relaxed high speed cruising. Mid-sprockets and mid-freewheels are standard bike parts available at any bike shop allowing you to easily modify the factory gear ratios. For the fine points of gearing look here.

Battery Systems

EcoSpeed 48 Volt, 10 Ah Lithium

Type:
Lithium Iron Phosphate 16-cell, built in battery management electronics including cell balancing.

Capacity:
10Ah, rated at 0.2C when new. Actual useable capacity at high currents will be less. Some capacity loss with use and ageing is normal.

Battery Voltage, Fully charged:
approx 58.4 Volts

Typical Voltage:
51.2 Volts, no load

Maximum and Continuous Discharge Current:
50 Amps

Battery Temperature Range:
Charge: 0C to 55C, 15C to 30C recommended
Discharge: -20C to 55C

Battery Self Discharge:
less than 8% per month

Weight:
17 lbs (7.7 kg)