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).
Standardisation proposal for 895mm x 150mm tyres to replace the 895mm x 135mm tyres on the 40/50 chassis.
| Identifier | ExFiles\Box 81\1\ scan0062 | |
| Date | 6th March 1919 | |
| R.R. 755 (5 H) (S.A. 325. 25-2-15) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0961. STANDARDISATION OF CHASSIS PARTS. Description of Parts. 895mm x 150mm Tyres. Origin. Mr. Royce's Suggestion. Experimental Test Report. By10/P24219 Road Test Report. Mr. Royce suggests that what was know in pre-war days as the 895 Oversize tyre, that is a tyre 895mm x 150mm which actually fits on the same rim as the old standard 895mm x 135mm, should be made standard for production on the 40/50 chassis. Signature of Exp. Dept. that above is correct. (Sgd) E.Hives. Weight of Old Part. Cost of Old Part Dunlop wire wheel fitted with Dunlop groove tyre 895mm x 135mm - 68lbs. Wheel £4/4/4 Tyre £6/19/7 Total £11/4/11 (15/12/16) Weight of New Part. Cost of New Part Rudge-Whitworth detachable wheel with Dunlop Magnum tyre 895mm x 150mm - 72lbs. Wheel £5/1/8 Tyre £7/15/- Total £12/16/8 (16/11/18) Difference per Car. £ 3/16/8 Cost of Parts in Works and Stores which will be scrapped if commenced on:- Series........£.......... Series........£.......... Series........£.......... Storekeeper advised re above. Storekeeper's Signature. Signature of Mr. DeLOOZE that above is correct. SIGNATURES DATE REMARKS Mr. JOHNSON. 3 IV [Signature] Mr. ROYCE. 2.4.19. Agree FHR Mr. WORMALD. (Absent) Mr. NADIN. (Absent in U.S.A.) Mr. PLATFORD. 17 3.19. Agreed. EP.{G. Eric Platford - Chief Quality Engineer} Mr. NORTHEY. Mr. Bailey. 6.3.19. Agreed. BY.{R.W. Bailey - Chief Engineer} | ||