fell system การใช้

• The Fell system was designed, developed and patented by British engineer John Barraclough Fell.
• By the 1950s the Fell system had become too expensive to operate and was closed on 29 October 1955.
• However the government did not favour the Fell system as used on the Rimutaka Incline which was expensive to operate.
• The gauge Snaefell Mountain Railway climbs the island's main peak and is the sole operating Fell system railway in the world.
• The " Snaefell Mountain Railway " on the " Isle of Man " still uses the Fell system for braking.
• The Rimutaka Incline section of the line over the Rimutaka Ranges between Fell system on the steep 1 in 15 section which was long.
• It was to be the third and last Fell system employing the centre rail for both tractive power and braking, and the longest surviving.
• The final decision was made by the head of the Fell system would be suitable, and cited the Mont Cenis Pass Railway Railway as an example.
• Where the line is too steep to rely on adhesion for climbing, a rack railway may be used, in which a toothed Fell system, in which traction and / or braking wheel are applied to a central rail under pressure.
• Good coal deposits had been discovered in the Paparoa Ranges, and although the Fell centre rail to assist braking on the descent, though this was not a full use of the Fell system like the Rimutaka Incline in the North Island was.
• Other options for a line over the pass were a cable-hauled system or a line of 1 in 15 gradient using either the Fell system or a rack railway using the Abt system ( or even a S-shaped tunnel under Mount Rolleston ).
• Although these branch lines are now closed, they were famous for their usage of the Fell mountain railway system to aid braking for trains descending the Inclines ( though this was not a full use of the Fell system like the North Island's Rimutaka Incline ).
• To help with braking on the descent, a non-load-bearing " brake rail " located between the running rails can be used, similar to the rail used in the Fell system, e . g . by the Snaefell Mountain Railway on the Isle of Man.