Victorian Railways Physic for Roller Bearing Wagon Stock.
Used on Wagons built between 1920 through to 1941 after the 1962-1966 overhauls into bogie ex-changeable stock for BG and SG use to carry Special Goods and General Goods (2 Axle Roller Bearing Bogie's).
Also best on 19-23ton Cars Unloaded Tare Weight and upto 65tons loaded, anything lighter or heavier makes it handle different, the physic has been set up with Grade Control so the brake cylinders vent at a very slow rate, the brake ratio is also based on Load Compensating System which means the values are set for a fully loaded wagon's max braking effort, only issue is unloaded wagons will brake too hard, The Load Compensating Lever reduces the max brake cylinder pressure to 27PSI for unloaded wagons while loaded wagons get the full 50 PSI pressure, hopefully one day N3V puts a brake cylinder efficiency tag in the scripts so we can control it for loaded or unloaded wagons.
Brake Pipe: 72PSI Max
Brake Cylinders: (1x) 10in x 12in 50 PSI Max
Brake Ratio: 35.3% - 60.0%