The Brennan Gyro-Monorail was designed by Irish-born Australian inventor Louis Brennan (1852-1932) At 40 feet, weighing 22 tons, it managed a speed of 22 mph. Balance was achieved with two vertical gyroscopes mounted side by side, spinning in opposite directions at 3000 rpm. Weighing ¾ ton each, the gyroscopes were housed in evacuated casings to… Read More Gyroscopic Monorails