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B-24 Consolidated Liberator 'Red Top' Propeller Feathering Switch

The Consolidated B-24 Liberator’s four Pratt & Whitney R-1830-35 Twin Wasp engines gave the 65,000lb (fully ladened) Liberator a maximum speed of 297 mph at 28,000 ft but in an emergency, the USAAF heavy bomber was capable of limping home on just two operational engines. For short distances, it could even stay aloft on one but would rapidly lose speed and height.

Anything could happen to a Liberator's engines during a mission.

Hits from anti-aircraft flack or enemy fighter attack could result in fire, loss of fuel, coolant or oil stopping an engine dead in its tracks - endangering the entire aircraft and crew.

It did not even have to be the result of enemy action - many Liberator engines failed through overheating, component failure or any number of maintenance issues and it fell to the aircraft’s Co-pilot to ensure each functioned at their optimum settings - all the way to the target and all the way home again.

To assist with this, all four Pratt & Whitney engines were equiped with an independent fire suppression system that could be triggered from the cockpit should a fire break out in an engine bay.

Once triggered, the failed engine could be effectively turned off, with the remaining engines taking the load and although the B-24’s speed would start draining off and with it a loss of height, many aircraft still returned home with one or two silent power-plants.

Whilst the first priority of the Co-pilot was to quickly extinguish an engine’s fire - closing its fuel lines whilst increasing RPM on the remaining engines to compensate for its loss, another critical task was to decrease the drag on the aircraft from its now, stationary propeller/s. 

Ordinarily, a Liberator's four propellers faced forward at right angles to drive air backwards producing thrust but with an engine stopped, that ‘open’ propeller position suddenly created enormous drag on the airframe.

To compensate for this, the Liberator was equiped with four Engine Propeller Feathering Switches mounted on the pilot’s overhead panel.

When pressed, a stationary propeller would be automatically rotated to turn edge-first into the airstream reducing drag and perhaps ensuring the Halifax gained those extra precious miles it needed to reach home safely.

Some aircraft lost all four engines, forcing the pilot to push the nose down to maintain flight speed and hoping to glide as far as he could to enable the crew to safely bail out or to find an open field or clear stretch of water for a controlled crash landing.

It’s interesting to note that the B-24’s Red Top Feathering Switches were originally installed with no engine number markings on the Red plungers but as the war progressed, aircrew gradually began to hand-label them from 1 to 4 to avoid any accidental propeller feathering to a wrong engine during the hight of battle.

This original ‘Red Top Propeller Feathering Switch is a rare and significant artefact of one of the USAAF’s most iconic heavy bombers - the B-24 Liberator.

The Feathering Switch is fully functional and depresses in on its spring as designed.

What a special gift for the aviation enthusiast in your life!  - An original, WWII B-24 ‘Red Top’ Propeller Feathering Switch mounted in its 100yr old Mango Wood Display Stand with engraved plaque, printed and laminated Fact Sheet plus a highly detailed, custom built Scale Model of this iconic USAAF bomber, perched atop its magnetic display arm!

This B-24 Instrument comes complete with detailed Scale Model, Mango Wood Stand & Plaque plus Printed Fact Sheet featuring photo of instrument in the aircraft cockpit.

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Your B-24 Consolidated Liberator 'Red Top' Propeller Feathering Switch, Original Recovery Curios Warbird Collectable includes:

  • Original Warbird instrument
  • Highly detailed hand-built and airbrushed 1/72 plastic scale model of the aircraft.* 
  • Hand-crafted and beautifully finished 100yr, Far North Queensland Mango Wood display stand
  • Detailed, 2-sided, printed and laminated Instrument Fact Sheet detailing aircraft and instrument
  • Removable Magnetic Display Arm

*An upgrade to the larger and more detailed 1/48 scale model is also available in the hand-built and airbrushed plastic version for an additional $80 (Click on the 1/48 scale option)

Both the 1/72 & 1/48 scale hand-built and airbrushed plastic models are available with 'wheels & flaps up or down' and 'canopy open or closed' options with a choice of two Squadron markings and camouflage.

Upon order placement you will receive an email asking for your preferred configuration.

Your complete Recovery Curios Original Instrument Collectable is securely packed and delivery normally takes between 6 - 8 weeks approx.

Did you fly, crew or maintain a B-24 Consolidated Liberator or have a friend, colleague or family member who did? Check out our PERSONALISED ORIGINAL INSTRUMENT COLLECTABLE OPTION here.