. The steam-engine and other heat-motors . Fig. 38. Steam Pressure 105 PoundsRevolutions 250Spring 60. Figs. 39 and 40. STEAM-ENGINE INDICATOR AND ITS CALIBRATION. 67 they occur at uniform arc distance apart. This shows that thesudden impingement of the steam on the indicator piston pro-duces an harmonic vibration similar to that just described.(Figs. 39 and 40.) All cards from high-speed engines should show some ten-dency to wave as it is a natural effect. If it is taken out byfriction, the cards are surely in error. At the same time a largewave motion should be avoided by using heavier sprin
. The steam-engine and other heat-motors . Fig. 38. Steam Pressure 105 PoundsRevolutions 250Spring 60. Figs. 39 and 40. STEAM-ENGINE INDICATOR AND ITS CALIBRATION. 67 they occur at uniform arc distance apart. This shows that thesudden impingement of the steam on the indicator piston pro-duces an harmonic vibration similar to that just described.(Figs. 39 and 40.) All cards from high-speed engines should show some ten-dency to wave as it is a natural effect. If it is taken out byfriction, the cards are surely in error. At the same time a largewave motion should be avoided by using heavier springs. was taken from the engine giving card, Fig. 39, at the same
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