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Excessive hammer blow from high slipping speeds was a cause of kinked rails with new North American 4–6–4s and 4–8–4s that followed the 1934 A.A.R. recommendation to balance 40% of the reciprocating weight. [8] Out-of-balance inertia forces in the wheel can cause different vertical oscillations depending on the track stiffness.
If a horse is highly collected, the center of balance will be farther back, regardless of gait, than if the horse is in an extended frame. For movements such as a rein back or the levade , the center of balance of horse and rider may be further back than at a standstill, due to the shift of weight and balance to the hindquarters of the horse
A time–distance diagram is a chart with two axes: one for time, the other for location. The units on either axis depend on the type of project: time can be expressed in minutes (for overnight construction of railroad modification projects such as the installation of switches) or years (for large construction projects); the location can be (kilo)meters, or other distinct units (such as ...
In a reciprocating engine, top dead centre of piston #1 is the point from which ignition system measurements are made and the firing order is determined. For example, ignition timing is normally specified as degrees of crankshaft rotation before top dead centre (BTDC). [2]
A horse on a cargo plane heading to Belgium caused the aircraft to turn back to New York City after it got loose. On Nov. 9, during the initial stages of its Atlantic Ocean journey, a Boeing 747 ...
A set of whippletrees or leader-bars for the two leaders of a four-horse team A whippletree , or whiffletree , [ 1 ] [ 2 ] is a mechanism to distribute force evenly through linkages . It is also referred to as an equalizer , leader bar , or double tree .
One big new threat involves artificial intelligence scams that use fake images, texts, videos or other messages, often by impersonating a celebrity, politician, family member or friend in hopes of ...
A flight had to divert back to its origin airport after a horse became loose in the cargo hold. The incident, which happened shortly after take off from New York’s JKF airport, forced the Boeing ...