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