I don’t buy it. Hair dryers use a LOT of electricity. Plus, unless they have some sort of flywheel or intermediate battery, wouldn’t the power fluctuate if his speed alters?
Leg Power replaces electricity in this Parisian beauty salon, where Madame has her hair dried despite the lack of coal-generated current. An ingenious beautician hires unemployed 6-day bicycle racers to peddle away on a bike, the back wheel of which is attached to a small generator! The current runs 6 driers.
I think the Modern Mechanix definition of a fad is “something somebody did once”.
Bike Riding on Tight Wire Is Latest in Hollywood Fads
RIDING her bicycle along the popular beach at Venice, California, near Hollywood was too tame a pastime for Billie Yuill, so with Isabelle Becker to help her maintain her balance she tried out the stunt illustrated. Taking the tires off the wheels of her bike and with Isabelle in a rope swing underneath her “bike,” she rode the lifeline along the beach.