My Pedal Assist Bike

My neighbor's kid had an electric motorcycle that has been sitting idle in the backyard for awhile. The bike ended its life after the speed controller gave up. The cost of the part could not justify the  use of it. One thing is he already outgrown the toy. I decided to give it another life in a different form.

 Trying to salvage the main frame. 

 Added a small basket to hold the battery.

 I used two swivel casters, one caster I have to bore the middle part.

There you go as it is almost completed.

HandCrank FlashLight

I wonder how this little handcrank flashlight works. They say its cheap and simply made. Sure enough we have the idea on how it works, but inside that plastic case we don't really know how it ticks.

This little wonder sealed by the plastic case. Picture taken on each sides.

Took it apart, picture in opposite sides with main parts showing the crank, gear, light assembly.

Top left, coil winding, top right showing the lamp assembly composed of 2 led's, 3.6V nimh,

 bottom right is the magnet and gear reatio.

My Cassette Radio To Iphone Conversion

Here is an old Radio Shack cassette tape recorder that has been lying around my house. 

 The back information says it uses a six "C" cell batteries.

 

 

 Exposing the circuit.

 

 I removed the unwanted cassette mchanism.

 

 I then soldered the speaker cable to a low impedance circuit. 

 Using the touch method, locate the input circuit. This should be somewhere near the cassette head connector. When touched, it should not create a loud humming sound than the rest of the circuit. You can series a capacitor to be safe.

 Short together the main power and the motor power.

 

 Add an on/off power switch.

Just like the simple toggle switch above which I super glued from the inside.

 

And presto! There goes my Iphone radio.

 

Pedal Exerciser Generator

After building the mini pedal exerciser, I decided to go further. I added a motor to act as a generator to charge my batteries. Stepper motors can be found almost anywhere, specially in printers. Cut a 10 inch diameter wood, added a rubber shaft to the servo motor, reconfigured the wirings, and attached to the exerciser.

 





 Putting the generator into operation. Recharging the 12 volts nickel cadmium batteries. The more you pedal the more you sweat, and the more output you give off to your batteries.

 

 Different looks of stepper motors.

 

Diagram of the 6 pole motor with added 4 each 1N4004 diodes and 1000uf capacitor