Salt Lake Telegram | 1917-11-18 | Page 14 | Horsepower in Automobile Quite Easy to Compute

HORSEPOWER ER IN AUTOMOBILE QUITE EASY TO COMPUTE Tile average car owner does docs not know liO how to d determine horsepower nor understand what It means Too Tile formula used in America is N dIvided di divided dI- dI vided by 2 which gives the horsepower horsepower horsepower horse horse- power at 1000 feet per minute of piston piston piston pis pis- ton speed D means the diameter of the cylinder N the number of ders This means menns that motors of ot the same number of cylinders of ot different differ differ- slit ent strokes but having the same lame bore will have hat the e same sam hOr horsepower power at 1000 feet per minute of piston speed However H er 1000 O feet per r minute pis piston piston pis- pis to ton Speed In itt a motor t of six inch h stroke I Is equivalent to 1000 revolutions revolutions revolutions per minute while in a a. motor with a inch four-inch stroke It equals 1500 revolutions per minute So a 3 by Inch 4 four cylinder motor is rated at horsepower er at 1000 feet teet per minute piston epe speed d or 1500 1900 revo revo- o IP per minute i ra and a 3 by Inch 6 four cylinder motor is also Is listed rt at horsepower at 1000 feet per minute minute min mm- ute or 1000 revolutions per minute