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