We have put into a grist mill which runs three pairs of stones (two of four, and one pair of three feet) an engine, the cylinder of which is 10 inch bore and 24 inch stroke, making 150 revolutions-or GOO feet velocity of piston -per minute. EDITORS-We have seen a number of statements in the SCIENTIFIC AMERICAN relating to improvements in steam engines to save fuel, but we do not recollect seeing any statements regarding the amount of work performed with a given amount of fuel, which would give those who are not acquainted with a steam engine, a better idea of its power and fuel-economizing qualities than merely to state the amount of fuel consumed per horse power. They were perhaps the Union Pacific’s most important factor in their handling of wartime freight, developing 6,000 drawbar horsepower at 45 miles per hour, and each doing the work of two other locomotives one of the toughest hauling jobs on any American railroad.MESSRS.
Online steam engine workdone calculator series#
These 4000 series locomotives can operate on any part of the system and can do up to 80 miles per hour, but produce maximum power continuously at 70 miles per hour.
Tests were made with earlier articulateds and the result was this design, the mechanical details being worked out by Union Pacific engineers and those of the American Locomotive Co. Their objective was a locomotive capable of hauling maximum tonnage and maintaining schedules without helpers over the Wasatch Mountains on a ruling grade of 1.14 per cent between Ogden, Utah, and Green River, Wyoming, 176 miles. These “Big Boys” have a total length over couplers of 132 feet, 10 inches, and their basic design was developed by engineers of the Research and Mechanical Standards Department of the Union Pacific. The 4000 is one of a fleet of 25 such locomotives – the largest and heaviest steam motive power in the world. Note:These Yellowstones were used by DM&IR in the Minnesota iron mines too. Tractive Effort (orig.) – engine – 140,000 lb., and booster – 13,400 lb. Some improvements such as the addition of roller bearings have been made and their tractive power as last reported was 145,930 pounds. They were designed to haul 4,000-ton trains the 216 miles between Mandan, North Dakota, and Glendive, Montana, up 1.1 per cent grades, which service they have performed most satisfactorily. For years these Yellowstones were the world’s largest locomotives and they still remain near the top in this class. In 1928 the Northern Pacific’s first 2-8-8-4, the 5000, was built by Alco, and after very successful trials 11 more of this type were ordered from Baldwin’s. *NOTE:This is just a quick calculation and someone fix a flaw if I made one without too much criticism. 58 miles every minute so that means 3062 feet and the wheels are 68 inches*3.14=214/12= 17.83 feet in circumference so that means 172 strokes per mile times 2 for double acting.ġ50*32*443*344=731481600/33000= 22000 IHP per cylinder at peak performance, correct me if I am wrong but that is one powerful engine, and has a combined IHP of 88,000 at 35MPH (But 2 of the cylinders actually are low pressure feeding on the exhaust of the other 2, a compounding system) I did the calculations for a Big Boy,based on a 300 PSI(/2=150) normal working boiler pressure, and using the optimal speed of 35 mph (Found on Wikipedia) I figured out that it goes. The Big boy also produced 6000 draw bar horse power. Or the Union Pacific Big Boy's with 4 Cylinders each 23 3/4 inches by 32 inches. CB I wouldn't call a locomotives engines small, they just look small compared to the actual monstrosity of the engine size but Just look at Pere Marquette 1225's engines, she has 2 of them each at 26 inches by 34 Inches, much bigger than most engines that we on the forums own.
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