Mersey Tunnels, Huge Fan. Behind the scenes at Liverpool Queensway tunnel.

[@Trialnerror]

Would have loved to hear the fan vs. the music but thanks for sharing.

[@MenzelMotors]

If you like big fans, you might also like the big electric motors that drive them. Greetings from Berlin.

[@pomonabill220]

Ditch the background music!!!! We want to hear the motor running!!!

[@TheFanUniverse]

Wow, I wonder what the original motors would look like

[@notwenjohn6852]

The original motors would have be DC (Direct Current) and probably open frame.

[@peterking2794]

@@notwenjohn6852 I can just imagine those lovely old motors with their commutators and big brushgear!

[@cheedam8738]

is there a video of the fan going full speed?

[@notwenjohn6852]

In the video the fan is actually running at, if not near to, full speed. The RPM of the fans is relatively slow - geared down through the David-Brown gearboxes etc.

[@cheedam8738]

@@notwenjohn6852 Oh okay, make sense