hobby #195 · 2 days

Diabolo Gyroscopic String Acceleration

Spinning a diabolo — a two-cupped axle whipped up to speed on a string strung between two handsticks — and keeping it alive, stable, and aloft through throws, string wraps, and correction pulls. The whole craft is feeding energy into a gyroscope by pumping the string, then reading its lean and answering with the sticks before it tips off the axle.

Jul 16 6:53 PM #195 3 min

The Sky Bell Only Rings When You Stop Sawing

Diabolo Gyroscopic String Acceleration

Sawing the string like a panicked canoeist does nothing; a diabolo is a gyroscope you feed by whipping, then argue with quietly before it skitters off into the fence.

sportperformancemechanicalscience

Jul 23 11:37 AM #195 day 2 3 min

Catch the Egg, Not the Trampoline: Landing the Toss

Diabolo Gyroscopic String Acceleration

Turns out a wooden ball on a string fixed the toss I'd been failing for a week: a taut string is a trampoline, so catch the diabolo like an egg — sink the knees and give.

sportperformancemechanicalscience