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).
Technical memorandum with annotated sketches discussing design improvements and weight-saving measures for Super Sports pedals.
| Identifier | WestWitteringFiles\R\January1928-March1928\ 25 | |
| Date | 23th January 1928 | |
| DA{Bernard Day - Chassis Design}/IDY. FROM R.{Sir Henry Royce} HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} (At Le CanadelHenry Royce's French residence.) C. to BJ. WOR.{Arthur Wormald - General Works Manager} REC'D.{John DeLooze - Company Secretary} R2/M19.1.28. & DESPATCHED FROM WW. 23.1.28. SUPER SPORTS - EAC.10. PEDALS - N. SCH. 2449. Y7470 I am not sure I am right in asking for entire support from the frame, but I feared any slight movement might make the pedal rub on the pedal plate, so we will go on, and if we don't like it we will try a more orthodox scheme of supporting inside end on gearbox. N. sch. 2531. is the preferable design, but one thinks the pieces might be better proportioned, starting with a wider fork. This N. sch. 2531. makes many pieces alike: so good for manufacture. I am wishing to save weight material and length of drilled holes and bolts. You say clearance holes for bolts used as pins, but you mean push fit clearance (i.e. closest fit that will go together without special reaming.) I prefer tube inside socket: we have good design fork ends somewhere. [Diagram annotations] Top right diagram: Nearer. Shorter boss. Lower bolt rather than cut washer. Between diagrams: Shorter boss brazing and pinning only requires short length to equal strength of tube. Two bolts instead of three. Bottom left diagram: Short. Length of boss & dia. of tube same. Close as possible. Reduce to minimum. Increase this to save weight. R.{Sir Henry Royce} | ||