[06/06/2022] to [10/06/2022] Update Log 1

June 6:

1. Generator has arrived

June 7 – 9:

1. Consulted Tony and tried to understand how the AC generator works
2. 3D modelled simple handle and washer to test out hand crank system

June 10:

1. Finished printing first handle ( Annex A )
2. Cranking produce up to 15V without load
3. Planning
   • Standing Leg Crank < 500N
   • Sitting Leg Crank < 300N
   •  Standing Hand Crank < 130N
   • Acceptable Length of Crank < 40cm
   • Acceptable Cranking rpm < 25rpm
   • Eqn: P = IV = Torque*rpm*(2pi/60)

Questions to answer:

1. How fast must generator rotate to achieve power requirement of >17.5V and maximum current
2. Can 3D printed pulley support tension of timing belt
3. What is the efficiency of the generator

Planning with assembly model using Fusion360.

Annex A