# Self balancing bicycle prototype using flywheel(reaction wheel)

by ykhoody
Tags: balancing, bicycle, flywheelreaction, prototype, wheel
 P: 2 Hello everybody, Well I'm a level 4 mechatronics students from Mauritius and doing my project on a self balanced bicycle which uses a flywheel to achieve this.A better view of it can be seen on: http://www.youtube.com/watch?v=d1Uy7bU6TII OR EVEN ON: http://www.youtube.com/watch?v=0312B...eature=related http://www.youtube.com/watch?v=AvGUu...eature=related During the past 3 weeks,I've been struggling on calculation of torque(flywheel motor) and I'm stuck. I have been using the formula T=J*alpha, where J=moment of inertia and alpha=angular acceleration. I have assumed overall mass of prototype to be around 2.5 kg,radius of flywheel=5 cm,mass of flywheel=0.5kg,radius of driving wheel=5 cm,max permissible tilting angle=30 degrees. Could you please help me in selecting my 12V DC motors:flywheel motor(rpm,torque) Driving motor(rpm,torque) and flywheel specifications(radius and mass) and finally if gear box(reduction gear) is needed,its ratio?? Thanking you all in advance. Best regards