Speedway
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Midget
- 250kW Semikron $NZ 10K
- Siemens AC Induction motor
- Battery 20kWh A123 (cost of charging $6)
- Engineering
TQ
- 100kW Scott Drive $NZ 7500
- 25 laps ~= 6 minutes (requires ~10kWh pack)
- 20kWh Winstone 230 kg 142l, 300V 60Ah ($NZ 10K) (cost of charging $6) - slow charge only ( charge time to 80%, 1 hr to 100% fast charge, 3 hrs to 100% on trickle charge)
- 10kWh A123 110kg ($NZ 12K) (cost of charging $3) - fast charge (15 min fast charge)
- Fast Charger (PFC75 40kW) $NZ 6000 (80% charge time 1 hr) 80A supply.
- Brusa galvanicly isolated $5000 (3.3kW) (100% normal charge 7 hrs)
Kiwi kidz
- ME1012 450A drive Kit 19kW peak (electricmotorsport.com)
- Winstone 5kWh (16 x 100Ah 48V) - 56kg ~15 minute runtime (cost of charging $1.50)
- 10k (one off), ~6.2K volume!) + + ~NZ1200 pc programming interface + $5K engineering time (NRC - red light dash + first time setup and install)
- Protech charger 4kW $1500
Speedway Bike
Targets (500 cc methanol powered):
- Power: 40 kW (54 hp)
- Torque: 50 Nm (37 ft lbs)
- Weight: 80 kg (frame = 40 kg, motor + exhaust etc = ~40kg)
- Volume: ?
Actual (with 2 inch wide 2 magnet row motor, rated 6000 RPM, peak 10,000 RPM):
- Power: 50 kW (67 hp)
- Torque: 80 Nm
- Weight: 85 kg (frame = 40 kg, motor + inverter + battery = ~45kg)
- Volume: ?
Electrical Specs:
Controller:
- 330Vdc(nom) / 300Arms(3ph)
- liquid cooled (may not need active cooling for short bursts)
- 7.5kg
Battery:
- A123 cylindrical. 2.3Ah, 3.2V, 0.070kg, 70A 180Wcont - 2 minute run time.
- Option(1) 100cells (1p) - 320V, 18kWcont, 7kg (starter/junior pack) up to 30kW/10sec
- Option(2) 200cells (2p) - 320V, 36kWcont, 14kg (race pack) up to 60kW/10sec
Motor:
- 50kW over 5800-10000rpm
- 23 cm diameter, 16 cm long
- 19 kg
Power balance:
- 50kW mech
- Vdc 320V nom
- Idc - 180A
Weight
- Controller ~7kg
- Battery ~20kg, 150x150x750
- Motor ~19kg
- Total - should come out at around 45kg.
Summary:
- Due to Cell Voltage sag, peak available power will drop at higher motor RPMs.
- Motor slightly oversize
- Torque controller limited, power is battery limited
Advertised specs:
- 50kW(66hp) 10,000rpm Electric Motor drive
- 80Nm+ INSANE TORQUE!
- 1500Wh 330V Battery (designed for 2min race runtime)
- 15min Fast Charge