the story that started it up again:
The coming of the electric motorcycle (Gizmag)
the story that pushed me over the edge:
152mph, 9.2ET 1/4mi (KILLAcycle
The cells:
a123 systems li-ion
the motor:
perm motors
current shopping list (oh wow. what a bad pun.)
Perm-Motor PMG-132
12 - 72 Volt, 9.5 HP on 72 volts systems, 19.3 HP peak for 10 minutes
Voltage: 24 - 72 Volts
Inductivity: 0,019 mH
Current: 110 Amps
Resistance: 16 mOhm
Peak Efficiency:
2.2 KW @ 24 volts, 1080 RPM, 2.94 HP
3.5 KW @ 36 volts, 1700 RPM, 4.69 HP
4.74 KW @ 48 volts, 2300 RPM, 6.35 HP
5.97 KW @ 60 Volts, 2870 RPM, 8 HP
7.22 KW @ 72 Volts, 3480 RPM, 9.7 HP
Shaft: 3/4" Diameter, 3/16" Keyway
Protection: IP 20
Inertia of masse: 0.025 kgm?
torque: 20.5 Nm
Temporary service: 10 min = 200 Amps
Max torque: 38.5 Nm
Weight 11 Kg, 24.2 lbs
Controller: Alltrax AXE4844
Programming Functions
Throttle ramp programming
Throttle response rate
Plug brake on/off, plug brake current
High pedal disable on/off
Battery over/under voltage cutback
Maximum output current
Specifications:
Operating Frequency: 18Khz
Throttle Input: 0-5K ohms, 5-0K ohms, 0-5 volts, and ITS (inductive throttle sensor)
Key Input Voltage: 8 volts to 1.5 times max battery volts
Quiescent Voltage: less than 75mA
Thermal Cutback: begins at 75C, 95C shutdown
Programming Interface: RS232 serial to host PC running freeware Windows interface
Current Limit: 400 amps
30 second rating: 400 amps
2 minute rating: 400 amps
5 minute rating: 300 amps
1 hour rating: 150 amps
Voltage drop @ 100 amps = <.13 volts
AWI-5K Thumb Throttle
Potentiometer, Thumb-Actuated, 3-wire 0-5 k/ohm & 5-0 k/ohm
(6) Feet #4 Gauge Red Cable
(6) Feet #4 Gauge Black Cable
Heavey Duty Cutoff Switch
400 Amp Fuse & Holder
(12) #4 Gauge Conncetion Lugs
battery facts:
40# a123 cells, configured at 12v: approx 600 aH (264 cells)
40# lead/acid, 12v, 55aH
600aH lead/acid, apporx 440lbs (11 batteries))
6 x 12v lead batts=72v, batts can weigh max 7# ea=40# cost=$400.00
264 x a123 cells (@70gm) = 40# cost=$5000.00
but... i digress.
the day of the race...
(first test run)
(wait 'till next year!)
1/20/07
new england belt sander racing associaton annual race, feb 4th
11/27/06
...less is more.
11/24/06
1987 Suzuki RM250 parts bike
needed to start EV conversion:
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