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).
Weights of various Terraplane 6 engine and gearbox components.
| Identifier | ExFiles\Box 21\6\ Scan218 | |
| Date | 15th March 1935 | |
| To Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} from RHC.{R. H. Coverley - Production Engineer} x4217 RHC.{R. H. Coverley - Production Engineer}10/MS15.3.35. TERRAPLANE 6. We give below the weight of various Terraplane units as requested in your Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}22/KW.29.1.35. PISTON Weight of 1 Piston (bare) - 10 ozs. " " 4 rings - 2 ozs. " " 1 Gudgeon Pin - 2 ozs. WEIGHT COMPLETE - 14 ozs. CONNECTING ROD Weight of Connecting Rod at large end. - 1 lb. 5¼ ozs. Weight of Connecting Rod at small end. - 7¾ ozs. WEIGHT COMPLETE - 1 lb. 13 ozs. FLYWHEEL & CLUTCH Weight of Flywheel. - 16 lbs. 9 ozs. " " Clutch - 17 lbs. 0 ozs. WEIGHT COMPLETE - 33 lbs. 9 ozs. GEAR BOX Weight of complete Unit. - 62 lbs. ENGINE Weight of complete Unit. - 490 lbs. TOTAL WEIGHT OF ENGINE & GEAR BOX - 552 lbs. (RHC{R. H. Coverley - Production Engineer}) | ||