Calculate going: The tread width is 250 mm so this can be our Going. Calculate total going: Flight 1 â 250 mm = 9 x 250 = 2250 mm plus Flight 2 â 250 mm = 10 x 250 = 2500 mm plus the landing width 900 mm = 5650 mm. Check results with BCA requirements: Rise: 171 mm is within the range of 115 to 190 mm.
You need to know that Foundation Brakes refer to the brakes located at each individual wheel. There are many different types of foundation brakes, but the most common one is the S-Cam drum shown in figure 5-2. For the pre-trip exam, you'll need to know all the parts of an S-Cam brake system shown in that figure.
HEAVY TRUCK BRAKING & AIR DISC BRAKES 3: 1 6 Foundation Drum BrakesS-Cam Brakes The most common type of foundation drum brake is the S-Cam Brake, commonly referred to simply as Cam â or Drum â Brakes.Cam Brakes are actuated by applying input force from an air chamber or actuator.EAVY TRUCK BRAKING & AIR DISC BRAKES 4: 4 13 In the event of wear, the wear adjusting system gradually moves the brake caliper (1) from its initial position so that a constant â and small â air gap between the brake pad (4) and the brake disc (3) is always on the side where no brake actuation takes place.