This document details the construction and applications of a 12V DC pedal generator invented in 1976. The core design uses a 36″ particle board disk as a flywheel, paired with a General Electric permanent magnet motor (half an amp no-load draw). Key components include:
- Flywheel: Balances torque and smooths power delivery
- Motor: Bosch electric winch motor (matched to pedal generator output)
- Drive System: Chain and sprocket setup for mechanical efficiency
- Flex-shaft: Enables connection to variable-speed tools
Applications: The device can power:
– Emergency generators (saws, lights, electronics)
– Biodiesel transfer pumps
– Washing machines and dryers (with solar air collectors)
– Whole-house ventilation and sump pumps
– Astronomy equipment and PA systems
– Science fair projects on human power efficiency
Efficiency Notes
- No fuel required, unaffected by weather/time
- Tandem setup doubles power output with out-of-phase pedals
- Solar panel integration boosts power without battery losses
- 12V DC output safely powers most off-grid devices
Durability: Original unit remained functional through multiple moves, with only the motor and flex-shaft preserved. The design emphasizes mechanical simplicity for long-term reliability.