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 20' rims and 6' tyres for the 20 HP model.
| Identifier | ExFiles\Box 58\1\ Scan077 | |
| Date | 24th July 1928 | |
| RR 755 REVISED (10M) (D.C. 777 - 29 - 2 - 28) Mc C. LTD X5820 COMPLETED 27.10.28 STANDARDISATION of CHASSIS PARTS. Date 24.7.28 X No. 5820 527 Drawing No. Part List Description of Parts. 20" rims and 6" tyres. Origin. To give better riding on the 20 HP. Experimental Test Report. We have run 21" rims with 6" tyres and 19" rims with 6" tyres and have run into no trouble. Road Test Report. We shall have done 10,000 miles before any have been delivered to customers as we can run an existing car. 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. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £2-17-6 Cost of New Part. £3-0-3 Difference per Car. £0-2-9 Handwritten Note: Applies to the first 130 chassis only. Subsequent chassis difference will be negligible. Wbd 23/10/28 Signature from Cost Dept. that above is correct. GRL 22/10/28 Cost of Parts in Works which will be scrapped if commenced on :- Series.........£....... Series.........£....... Series.........£....... INITIAL | DATE | REMARKS BJ. | 25.10.28 | agreed BJ R.{Sir Henry Royce} | 27.7.28 | Agreed. FHR. This matter is too urgent to await long months of trial. They are not at all likely to be wrong: they are hardly part of the chassis, and they are easily replaced if found wrong. We shall have these for present std. and the smaller ones will be tried for India 3. WOR.{Arthur Wormald - General Works Manager} | 26.7.28 | Agreed. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 26.7.28 | Agreed. RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 26.7.28 | Agreed. DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 24.7.28 | Agreed. BY.{R.W. Bailey - Chief Engineer} (Sheet returned 21.9.28 BY/Mtn) EP.{G. Eric Platford - Chief Quality Engineer} | 27.7.28 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 27.7.28 | Agreed. E.{Mr Elliott - Chief Engineer} PN.{Mr Northey} | 8.8.28 | Agreed. PN.{Mr Northey} CWB. | 26.7.28 | Agreed. CWB. Rear spare wheel carrying arrangement must be amended to suit. HS.{Lord Ernest Hives - Chair} | 25.7.28 | Agreed. HS.{Lord Ernest Hives - Chair} Stamp: 20 H.P. CHASSIS RECEIVED 22 OCT 1928 | ||