From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Heat expansion test results for Cast Iron and Aluminium pistons.
| Identifier | ExFiles\Box 35\2\ scan 085 | |
| Date | 27th June 1919 | |
| 27.6.19. Heat Expansion Test on Cast Iron Pistons E.4237. Temp. Dia. at Across Gudgeon Right angles Height at Height at rt. crown. Pin. to GP. G.P. angles to G.P. 18°C 4.4905" .0 4.496" .0 4.895" .0 4.4155" .0 4.4155" .0 50°C 4.492" +.003"4.498" +.002" 4.498" +.003" 4.4175" +.002"4.418" +.0025" 100°C 4.494" +.002"4.501" +.003" 4.501" +.003" 4.4200" +.0025"4.420" +.002" 150°C 4.496" +.002"4.503" +.002" 4.503" +.002" 4.422" +.002"4.422" +.002" 200 C 4.499" +.003"4.505" +.002" 4.505" +.002" 4.4245" +.0025"4.424" +.002" +.010 +.009" +.010" +.009" +.008" 2 HEAT EXPANSION TESTS ON ALUMINIUM PISTON E.6806. 20°C 4.486" .0 4.494" .0 4.496" .0 4.410" .0 4.411" .0 50°C 4.490" +.006"4.4985" +.0045" 4.500" +.006" 4.415" +.005 4.415" +.004" 100°C 4.497" +.007"4.505" +.0065" 4.506" +.006" 4.420" +.005"4.420" +.005" 150°C 4.503" +.006"4.511" +.006" 4.511" +.005" 4.4255" +.0055"4.425" +.005" 200°C 4.509" +.006"4.5165" +.0055" 4.516" +.005" 4.430" +.0045"4.430" +.005" +.025" +.022.5" +.022" .020" +.019" HEAT EXPANSION TESTS ON ALUMINIUM PISTONS E.17764. 16.8 C 4.495" .0 4.495" .0 4.3982" .0 4.3980" +.0 50. C 4.501" +.006" 4.501" +.005" 4.405" +.0068" 4.4045" +.0065" 100°C 4.507" +.005" 4.506" +.006" 4.412" +.007" 4.411" +.0065" 150°C 4.512" +.005" 4.511" +.005" 4.417" +.005" 4.418" +.005" 200°C 4.517" +.006" 4.517" +.006" 4.222" +.006" 4.421" +.005" +.021" +.022" +.025.8" +.023" | ||