Small crank rotation: Listen & Download Small crank rotation .mp3 Error! Change your browser, please! ⇓ Download The rumble and wave of the lightsaber ⚠ Tinder brush surface ⚠ Spray Shaving Foam ⚠ Flag flapping in the wind ⚠ Opening, closing a cigarette case ⚠ Ice crack ⚠ Closing the umbrella, Opening ⚠ Sine wave (975Hz) ⚠ Breaking a wood-glass product ⚠ Bath, Cork in the sink ⚠ Trampoline (diving) ⚠ Bicycle rear wheel ratchet ⚠ ★★★★★