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).
Instruction sheet with a hand-drawn diagram and specifications for a piston.
| Identifier | ExFiles\Box 22\5\ Scan062 | |
| Date | 29th November 1910 | |
| R.R. 258 (2M B (P. 125. 10.6.10) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 87) ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: M Platford Order No. Customer's No. Minute on piston & clearances Diagram Dimensions: Top clearance: .018" Top land: 6 7/m First ring groove: .010 Second land: 5 7/m Second ring groove: .006 Third land: 4 7/m Third ring groove: .006 Skirt top to gudgeon pin centre: 20 7/m Gudgeon pin boss: (20 7/m) Bottom of skirt clearance: .006 Overall height: 105 7/m Gudgeon pin height from bottom: 23 7/m Notes: Gudgeon pin held by french screws, peg to prevent same turning Weight 2 3/4 lbs Piston clearances vary .004 Tho the tops Lock as chequered by hand Signed: CSH This Sheet must be filed on completion of the work. | ||