Andis FlitzerCase study100 km/hTesting batteriesCooling gridContacted cellsfinished battery packscontroller mountingThe B side
LocationLucerne, Lucerne Switzerland map
Web/EmailWebPage email image
Vehicle1981 Yamaha RS 125 DX
MotorGolden Motors HPM-10KW fan cooled Brushless DC
. Initially I struggled to get a certificate for the continuous power measurements for the road registration procedure. But the Swiss registration officer assured me, that they won't request this, as long as the declaration on the motor looks trustworthy.
DrivetrainChain Drive
ControllerKelly KLS7250D, 24V-72V, 400A
Batteries72.00 Volt, Lithium-Polymer
New technology Graphene Lithium Ion Polymer cells from Shenzhen WESTART Technology Co. Ltd. 40 cells, 3.6V, 20Ah, continuous discharge 10C, totally 2.88kWh. Water cooling built in but not used.
I use them in 2p20s configuration, separated in 5 boxes, water tight.
System Voltage72 Volts
Charger 2x 84V 4A
I use two cheap charger from china as onboard charger. They fit nicely under the old tank.
DC/DC Converter Delta B70SR12424A
12.4V, 300W, water resistant IP67, EMC compatible for vehicles.
Top SpeedTarget: 62 MPH (100 KPH) or up to 75 MPH (120 KPH)
AccelerationShould be better than the old ICE. I'm curious to see!
RangeTarget: 31 Miles (50 Kilometers) or more
EV Miles
Start:20,533 Miles (33,037 Kilometers)
Current:20,533 Miles (33,037 Kilometers)
Total:0 Miles (0 Kilometers)
Seating Capacity2 adults
Curb Weight0
280 lbs (127 kg), estimated, including batteries
Conversion TimeI started the Project in November 2015. Still working on it...
The project is still going on. It's given me a lot of fun and a lot to learn.
Figuring out how to pack the batteries into that little space took a lot of time. Right now I'm mounting everything onto the bike and getting all the papers ready for the registration. I need to write a complete Certificate of Compliance.
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