Power / Controls (1 kg)
- Proprietary “energy-miser” controller inside of the weather-proof monocoque frame (MF)
- Bezel switch mounted on the underside of the MF powers the system on/off
- 36V, 5Ah battery pack (10 INR21700 cells with BMS) mounted in the MF
- Handlebar-mounted, 3-position proprietary speed switch: CRUISE-COAST-CLIMB
- Socket plug on underside of the MF for recharging main battery and connecting the auxiliary battery in parallel
- 4-LED’s on top of the MF indicating state-of-battery charge (100%-75%-50%-25%)
- USB port mounted in the top of the MF for recharging/powering personal devices (5V, 1A)
Motor (2 kg)
- 36 volt Brushless DC hub motor with Hall sensor
- Rotor ALNICO number = 16
- 80% efficiency rating
- 2640 motor rpm (13.2:1 reduction)
- 336 max output watts @ full charge (42V) in CLIMB mode
- 18 mph max speed @ full charge on level ground with 160 lb. rider
Mechanicals (6.3 kg)
- 6061 T6 monocoque frame + surface decals
- Threadless alloy fork with caged-bearing headset and rotation-dampened limiter
- Sealed bearing alloy front hub, 32-spoke radially-laced 20” wheel with NEXO (no-flat) tire or Kenda inflatable tire.
- Folding alloy footrests attached to the fork blades. 60 lb. load limit–no standing
- Threadless 2-piece stem w/QR for rotation and/or removal of its extension
- 520mm wide riser handlebars with 110 mm grips
- Right-hand brake lever actuating V-brakes on the rear wheel
- Double-wall, 36-spoke rear wheel with 26” x 1.95” thorn-resistant tire
- 27.2 x 300mm alloy seat post; black
- Lycra-covered saddle; black
- Toggling the master bezel switch under the MF powers the system.
- Plugging the 3-position speed switch into its handlebar cradle enables operations.
- In this state when the speed switch is rocked up to the “CRUISE” position the controller allows 5 amps to flow from the battery to the motor, which delivers 144 to 116 watts of power to the rear wheel. When the switch is rocked down to the “CLIMB” position the controller allows 10 amps of current to flow from the battery to the motor, which delivers 336 to 232 watts of power to the rear wheel. When the switch is released it defaults to the middle “COAST” position and no power flows through the system. This feature increases JackRabbit’s range.
- When the speed switch is removed from its cradle power flow from the battery to the motor is disabled.
BATTERY PACK RANGE ASSUMPTIONS:
The battery pack consists of 10 Samsung lithium-ion 21700 cells wired to a Battery Management System which balances each cell’s charging and discharging to ensure safe operation and a long service life. The pack stores 5 amp-hours of energy. With an average discharge voltage of 36V, the pack can deliver 180 watts of continuous power for one hour (5 amps x 36 volts).
How does this relate to range? First, it is important to understand that all motors are not 100% efficient. When JackRabbit’s motor takes in 180 watts only 144 watts are delivered to the rear wheel. Theoretically, 144 watts (Cruise Mode) will propel a 160 lb rider on a flat road about 12 miles in one hour (one charge cycle). If the road was a constant 3% uphill, the 160 lb. rider would travel only 8.7 miles (in Climb Mode) on a single charge.
Not all routes are flat or constantly uphill. On our one mile undulating paved circuit which includes 12% and 10% inclines our 160 lb. test rider traveled 13 miles in 65 minutes by CRUISing the flats, COASTing the downhills and CLIMBing the incline sections. You can estimate your speed and range at: http://www.bikecalculator.com/
Until we roll out our Dark Matter Propulsion system JackRabbit is helplessly constrained by these laws of Newtonian physics.