![]() Next I drilled two small holes in each end of the acrylic motor support and epoxied a small length of steel axle I got from a toy car axle. Instead, I then epoxied the motor to the ruler. I was too lazy to use both screws but should have as it will prevent some of the vibration the motor produces. I used a piece of acrylic ruler and drilled a hole for the motor bearing to fit into and a hole for one of the motor mounting screws. The first thing to make is something to support the motor in a vertically oriented axis. I measured the rpm using a cheap laser digital non-contact tachometer. Then I used an rpm of 11000 which yields 1.35 kilograms of torque at the axle end points (axle ends about 10cm apart). The rotor is not actually that dimension but I had to finagle the dimensions to achieve a mass of 150grams. The 1.35kg torque was calculated using the math program at. (weight of entire gyroscope) divided by (torque (calculated from weight of gyroscope rotor and rpm which = mass)) UPDATE: I calculated the approximate total weight to torque ratio that is required to keep a self-balancing gyroscope balanced. Perhaps using a rubber band would make it work.This could be the same reason a top heavy rotor (or motor) will balance if the axis is horizontal - the heavy weight pulls the frame back into a balanced position when the frame tilts - could be the same if the axis is horizontal too. I made a gimbal that put the CG of the motor/rotor in the center of the frame and it would not balance. UPDATE: it seems you must have an unbalanced rotor (weight is more on the rotor side) to make this work. The tighter the fit the better as you do not want any unnecessary vibration.Īny wood, or acrylic or fiberglass or aluminum to construct the gimbal (frame to hold the gyroscope).Ī variable power supply to adjust the speed of the motor. ![]() My shaft adapter connects a 2mm (dc motor) to a 4 mm shaft (the Powerball rotor). One shaft connector - this is the only specialized item that must be acquired unless you can make one. One rotor from a Powerball toy to serve as the gyroscope rotor - you can fabricate one from brass, steel or aluminum if you have access to a machine shop or can take one out of a toy gyroscope though that might be on the small size and will be more difficult to keep balanced. One 6 volt dc motor (size 170 with 2mm shaft) - but any small dc motor that spins at high rpm should work To make this gyroscope I had the following components: ![]() ![]() And when you first turn it on and it stands by itself - you will be amazed. This is a simple project that you probably already have the stuff lying around to make it with. Using just a small dc motor, a rotor from a Powerball toy (or something round and heavy that can be spun by a motor) - you can make a gyroscope that will balance itself on two legs. ![]()
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