scallopboy
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George Bennie Railplane at MilngavieSilent film
The proof-of-concept test track that was built in 1930 for the George Bennie Railplane at Milngavie, just outside Glasgow, Scotland. The Railplane was almost a monorail, with the car being suspended from one rail while wheels underneath ran on a stabilizer rail to prevent the car from oscillating from side to side. The full title of the system was "The George Bennie Airspeed Railway" (GBAR). The propulsion method was what differentiated it from other monorails: at each end of the car was a four-bladed propeller, driven by an electric motor.
The Railplane was intended to combine the advantages of aircraft and railway technology. The system was intended to achieve speeds in excess of 100mph: but 30 years earlier, Siemens had already achieved 131mph on a standard-gauge railway test track using 3-phase electric motors. Admittedly that track had been dead straight: but so was the Milngavie track.
The article remarked that the propellers didn't even need to be stopped when the car was brought to a standstill: they could be left churning, and as soon as the brakes were released the car would surge forward. But since the propellers were of fixed pitch, they'd still be applying full forward force, and it would be like pressing on the gas pedal and the brake pedals at the same time!
With a propeller at each end, coupling cars into a train would be difficult, but the inventor was said to have come up with a flexible coupling that would link the propeller shafts together. No mention was made of control cables: I suppose that they would have to go through the centre of hollow prop shafts.
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HollowHorn
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Re: George Bennie Railplane at Milngavie | scallopboy wrote: | | I suppose that they would have to go through the centre of hollow's poop shaft. |
How rude! 
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dickyhart
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excellent stuff, excellent find,
poor old george bennie, a great idea
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