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In structural engineering, Johnson's parabolic formula is an empirically based equation for calculating the critical buckling stress of a column. The formula is based on experimental results by J. B. Johnson from around 1900 as an alternative to Euler's critical load formula under low slenderness ratio (the ratio of radius of gyration to ...
The most popular scale in Japan. For models of Shinkansen high speed trains and other systems using standard gauge track, the international N scale standard ratio of 1:160 is commonly used. TT9: 1:120: 9 mm (0.354 in) Used also in New Zealand. HOn 2 + 1 ⁄ 2: 1:87: 9 mm (0.354 in) Used for 2 ft 6 in (762 mm) narrow gauge. 13 mm: 1:80: 13 mm (0 ...
Micro 'pizza layout' with 9 mm gauge track in 7 mm scale (09 scale) An important aspect of any model railway is the layout of the track itself. Apart from the stations, there are four basic ways of arranging the track, and innumerable variations: Continuous loop. A circle or oval, with trains going round and round. Used in train sets. Point to ...
The scales used include the general European modelling range of Z, N, TT, H0, 0 and also the large model engineering gauges of I to X, including 3 + 1 ⁄ 2, 5, 7 + 1 ⁄ 4 and 10 + 1 ⁄ 4-inch gauge. As 00 is a particularly British scale, it is not included within this pan-European standard.
ScaleSeven (S7) is a set of finescale model railway standards for 1:43.5 using true-to-prototype track and wheel standards. It is principally used to model British standard gauge ( 4 ft 8 + 1 ⁄ 2 in ( 1,435 mm )), Irish Broad Gauge ( 5 ft 3 in ( 1,600 mm )), or Great Western broad gauge ( 7 ft ( 2,134 mm )).
The term HOn30 (and sometimes HOn2½) is generally used when modelling American prototypes while H0e is used for European prototypes. In Britain, the term OO9 is used. [1] All these terms refer to models of narrow-gauge railways built to the world's most popular model railway scale of HO (1:87) but using a track gauge of 9 mm (0.354 in)—the gauge used for N scale models of standard-gauge ...
As these British layouts assumed the larger 00 scale of 4 mm to the foot (1:76.2), rather than H0's 1:87, the oversized locomotive bodies were now closer to scale size for the gauge. The coaching stock though had a ' miniature railway ', rather than narrow-gauge, look to them, accentuated by the toast-rack designs of some open stock.
USA Trains is a manufacturer of G scale model railroad products that started out as Charles Ro Manufacturing Company. [1] They offer two different scale sizes of trains that use the same track; the "Ultimate Series," which is 1:29 scale, and the "American" and "Work Trains" series which is 1:24 scale.
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