Mechanical sounds: Listen & Download Mechanical sounds .mp3 Error! Change your browser, please! ⇓ Download Drawbridge raise chains ⚠ Kick the bike speed switch ⚠ Foot pump inflating a mattress ⚠ Mechanical sounds ⚠ Lower chains, Drawbridge ⚠ Hydraulic mechanism, on, off ⚠ Chain hoist, Chain ⚠ Hand winch ⚠ Small hydraulic gear ⚠ Bicycle hand pump ⚠ ★★★★★