The book Practical Mechanics was written by author John Perry Here you can read free online of Practical Mechanics book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Practical Mechanics a good or bad book?
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XX. thu width of cylinders as nearly as possible equal to that of the wheels. 206. We have, then, the following easy, approximately correct rules for locomotives : — ^If r is lengfth of crank, r the* distance of centres of gravity of each balance weight from centre of wheel, e the distance apart of the centre lines of cylinders, d the distance apart of the wheels or centres of gravity of the balance weights, w the total weight of crank (referred to the pin, see Art. 205), pin, connecting rod, p...iston, slide, and piston-rod, a the angle which the radius to centre of gra\ity of balance weight makes with near crank : — (1.) luside-cylinder engines with uncoupled wheels. Each balance weight = 1^^ V 2^*T2^, 80 that A is easily obtained from a book of tables. (2.) Outside-cy Under single engines with uncoupled wheels. Each balance weight «= tDB A= 180'; 00 that in this case the balance weight is placed exactly opposite to the crank. (3.) Inside-cylinder engines with wheels coupled. Find by rule (1) if the weight of the coupling rods, &c., is too great.
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