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 of 33' x 6' tyres for the 20 HP chassis.
| Identifier | ExFiles\Box 53\3\ Scan059 | |
| Date | 21th March 1927 | |
| RR 755 REVISED (10M) (DE649 9-12-26) 5M. 2/1187. 4565 COMPLETED 22.6.27 STANDARDISATION of CHASSIS PARTS Date 21.3.27 Description of Parts. 33' x 6" TYRES - 20 HP. Origin. Request from Sales. Experimental Test Report. These tyres fit on the existing well based rims. They will only be fitted when specially demanded by a customer. Road Test Report. We have run these tyres over 10,000 miles on experimental cars without any trouble. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £21-18-8 Cost of New Part. £22-13-8 Difference per Car. £ 15/- increase Signature from Cost Dept. that above is correct. My Rh{R. Hollingworth} 21/4/27 X No. 5820 No. 4565 Drawing No. Part List A Scrap and replace at all costs, including Chassis already delivered to Customers. B Scrap and replace on Chassis in Works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Cost of Parts in Works which will be scrapped if commenced on :- Series.........£....... Series.........£....... Series.........£....... INITIAL | DATE | REMARKS BJ. | 22.6.27 | agreed H R.{Sir Henry Royce} | 24.3.27 | Agreed. FHR. but think they should be the regular standard recommended by us. WOR.{Arthur Wormald - General Works Manager} | 28.3.27 | Agreed. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 27.3.27 | Agreed. Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 22.3.27 | Agreed. Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 30.3.27 | Agreed. BY.{R.W. Bailey - Chief Engineer} This means modified rear carrier and grid. It will necessarily reduce lock. EP.{G. Eric Platford - Chief Quality Engineer} | 22.3.27 | Agreed on cars with front hydraulic shock absorber and friction pivots on cross steering tube. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 24.3.27 | Agreed. E.{Mr Elliott - Chief Engineer} Recommend always fit. PN.{Mr Northey} | | CWB. | 22.3.27 | Agreed. CWB. HS.{Lord Ernest Hives - Chair} | 21.3.27 | Agreed. Hs.{Lord Ernest Hives - Chair} [STAMP] H.P. CHASSIS | ||