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 various cast iron and aluminium pistons.
| Identifier | ExFiles\Box 180\M3\M3.7\ img007 | |
| Date | 27th June 1919 | |
| 27.6.19. Heat Expansion Test on Cast Iron Pistons E.4237. Temp. Dia. at crown across Gudgeon Pin. right angle to G.P. Height at rt. angle to G.P. 16°C 4.4905" 0 4.496" 0 4.496" 0 4.4155" 0 4.4155" 0 50°C 4.492" +.0015" 4.498" +.002" 4.498" +.002" 4.4175" +.002" 4.418" +.0025" 100°C 4.494" +.0035" 4.501" +.005" 4.501" +.005" 4.42" +.0045" 4.420" +.0045" 150°C 4.496" +.0055" 4.503" +.007" 4.503" +.007" 4.422" +.0065" 4.422" +.0065" 200°C 4.499" +.0085" 4.505" +.009" 4.505" +.009" 4.4245" +.009" 4.424" +.0085" +.010" +.009" +.010" +.009" +.008" Heat Expansion Tests on Aluminium Piston E.6806. 20°C 4.486" 0 4.494" 0 4.494" 0 4.410" 0 4.411" 0 50°C 4.490" +.004" 4.498" +.0045" 4.500" +.006" 4.415" +.005" 4.415" +.004" 100°C 4.497" +.011" 4.505" +.011" 4.506" +.012" 4.420" +.010" 4.420" +.009" 150°C 4.503" +.017" 4.511" +.017" 4.511" +.017" 4.4255" +.0155" 4.425" +.014" 200°C 4.509" +.023" 4.516" +.022" 4.516" +.022" 4.430" +.020" 4.430" +.019" +.023" +.0225" +.025" +.022" +.019" Heat expansion Tests on Aluminium Pistons E.17764. 16.5°C 4.496" 0 4.496" 0 4.3982" 0 4.3980" 0 4.398" 0 50°C 4.501" +.005" 4.501" +.005" 4.405" +.0068" 4.4045" +.0065" 4.4045" +.0065" 100°C 4.507" +.011" 4.506" +.010" 4.412" +.0138" 4.411" +.013" 4.411" +.013" 150°C 4.512" +.016" 4.511" +.015" 4.417" +.0188" 4.416" +.018" 4.416" +.018" 200°C 4.517" +.021" 4.517" +.021" 4.422" +.0238" 4.421" +.023" 4.423" +.025" +.022" +.021" +.0248" +.022" +.023" | ||