drives‚ greater emphasis on training of officials and inspections at regular intervals to monitor and educate staff for observance of safe practices. Safety devices/systems being introduced to prevent accidents include provision of Block Proving Axle Counters (BPAC)‚ auxilliary Warning System (AWS)‚ Fog Safe Device‚ Vigilance Control Device (VCD)‚ Train Protection and Warning System (TPWS)‚ Train Collision Avoidance System (TCAS)/Anti Collision Device (ACD) etc. Each and every consequential train
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Caliber Is It?” Paul Mazan made a very valid point when he touched on the fact that things aren’t always cut and dry when purchasing used firearms... and that in certain cases they can be quite dangerous. Mr. Mazan stated that “Whether behind the counter of a gunshop or just perusing the aisles of a gun show‚ you are going to come in contact with a lot of used guns. It may be a gun coming in for repair‚ a trade in‚ or just one you have been looking for to add to your accumulation. There are questions
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it leaves the axle‚ preventing it from limiting axle motion. The CD wheels on the rear of the vehicle allow a larger displacement per axle rotation‚ meaning the car will be able to travel a farther distance. Vinyl tape was used on the rear wheels‚ in order to maximize traction with the ground‚ and prevent wheel spin. The aluminum can that was used as the chassis was a malleable‚ yet durable‚ low mass material which aided the function of my car. Plastic washers were used on both axles‚ as guides to
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Fig. 2 Schematic design of test apparatus; 1) Kentledge‚ 2) Air operated cylinder‚ 3) Digital meter‚ 4) Plumb axle‚ 5) Contact breaker‚ 6) Connecting fitting‚ 7) Loading hatch‚ 8) Hatch‚ 9) Load piece‚ 10) Roller Fig. 3 Design of the connecting fitting‚ 1) Bearing cage‚ 2) Pivot pin‚ 3) Plumb axle‚ 4) Samples‚ 5) Main tube‚ 6) setscrew‚ 7) Pin coop‚ 8) Stud 2.2 Tested materials In this work‚ tribological effects of loads and sliding distances on wear
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Simple Machine: A machine with few or no moving parts. Simple machines make work easier. Examples: Screw‚ Wheel and Axle‚ Wedge‚ Pulley‚ Inclined Plane‚ Lever Compound Machine: Two or more simple machines working together to make work easier. Examples: Wheelbarrow‚ Can Opener‚ Bicycle Inclined plane: A sloping surface‚ such as a ramp. Makes lifting heavy loads easier. The trade-off is that an object must be moved a longer distance than if it was lifted straight up‚ but less
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The Physics of Braking Systems By James Walker‚ Jr. of scR motorsports Copyright © 2005 StopTech LLC Author’s disclaimer: mechanical systems operating in the physical world are neither 100% efficient nor are they capable of instantaneous changes in state. Consequently‚ the equations and relationships presented herein are approximations of these braking system components as best as we understand their mechanizations and physical attributes. Where appropriate‚ several examples of limiting conditions
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materials for the cart were gathered. - Shoebox (1) - Pole (2) [0.75cm radius] - Axle (2) [0.1cm radius] [0.3cm radius] - String - Wheels (2) [5.5cm radius] - CD (2) [6cm radius] - Thin stick - Pulley - Tape 2. The shoebox and the poles were measured and marked at places for drilling. 3. Four holes were drilled on the shoebox with electric drill. (Larger than the axles to reduce friction from the cardboard on the axles) 4. A hole was drilled near the top of each pole. 5. The box was cut on the
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A lateral motion device is a mechanism used in some railroad locomotives which permits the axles to move sideways relative to the frame. The device facilitates cornering. The coupled driving wheels on steam locomotives (often simply called "drivers") were held in a straight line by the locomotive’s frame. The flanges of the drivers were spaced a bit closer than the rail gauge‚ and they could still fit between the rails when tracking through a mild curve. At some degree of curvature‚ though‚ the flanges
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Induce a magnetic field and fit around the armature. | The magnets supply the magnetic field which interacts with the current in the armature to produce the motor effect. | Armature | The armature consists of a cylinder of laminated iron mounted on an axle. Often there are longitudinal grooves into which the coils are wound. | The armature carries the rotor coils. The armature is the part of a DC motor that rotates and provides energy at the end of the shaft. It is basically an electromagnet | Rotor
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friction which occurs in between the axles and the brackets. 2. What problems related to friction did you encounter and how did you solve them? We noticed that at times the car would come to a sudden stop. We realised that is most likely caused by too much rolling friction between the axle and the frame‚ thus causing the wheels to stop turning which in turn makes the car stop. We solved this by disassembling the axle from the frame and re-attaching it to larger axle holes in order to make sure that
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