Introduction: How I Built My Electric Bike Generator

Paul Fleck


12v battery


bike stand

DC 40 volt electric motor

solar controller

12v-110v inverter

solar power connection cable kit

10-24 locking nut to connect shaft

schottky diode

Step 1: Step 1

Take apart a DC 40 volt electric motor or just buy one. There 40 dollars.

Step 2: Step 2

I took off the resistance magnet from the bike stand and I was able to connect the shaft of the motor to the resistance wheel.

Step 3: Step 3

Now with the motor fitting the cover had to be mounted to keep the motor in place. I used a hacksaw to cut off a part of the cover because it didn't fit.

Step 4: Step 4

I tested if I was making volts when I peddled. And I did, so that means I could go on to the next step

Step 5: Step 5

Next I bought a solar controller which lets the right voltage of electricity from the motor go into the battery.

Step 6: Step 6

Then I added a Schottky diode to prevent back feeding from the battery into the motor which made the wheel spin.

Step 7: Step 7

I then put a 10-24 locking nut to connect the motor shaft to the resistance wheel so the motor would not just spin off.

Step 8: Step 8

I now had to mount the motor and cover to the bike stand so the motor would not spin around when I peddled.

Step 9: Step 9

Now I tested If I could charge an Ryobi 18v Battery. I had to connect the plug to an inverter, the inverter was connected to the load on the solar controller. It took 20 mins for 1 bar/1 amp hour to charge.

Step 10: Step 10

Finally I charged my iPhone. It took 40 minutes to charge 2 iPhones simultaneously.

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