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).
Alteration to part G.73149, changing its length to reduce front braking from 40% to 33%.
| Identifier | ExFiles\Box 171\1\ img084 | |
| Date | 9th December 1926 | |
| RR 755 REVISED (10H) (DE 444 6-10-26) BM. ORIGINAL COMPLETED. 25.1.27. STANDARDISATION OF CHASSIS PARTS. Date 9.12.26 X No. 8430 (crossed out) 8420 Drawing No. G.75418 Description of Parts. ALTERATION TO G.73149. ORIGINAL LENGTH 3.00. PROPOSED LENGTH 4.00" Origin. To reduce front braking. Experimental Test Report. This alteration to the lever length reduces the percentage braking to the front to 33%. The present front braking is 40% of the total. Road Test Report. This alteration is considered desirable to prevent the steering being affected when braking on corners. It can be applied retrospectively if considered desirable. Part List A Scrap and replace at all costs, including Chassis already delivered to Customers. B Scrap and replace on Chassis in Works. (Ticked) 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. £ Cost of New Part. £ Difference per Car. £ Negligible. Signature from Cost Dept. that above is correct. MV/RB{R. Bowen} 7.1.27 Cost of Parts in Works which will be scrapped if commenced on:- Series.........£....... Series.........£....... Series.........£....... INITIAL | DATE | REMARKS BJ. | 21.1.27. | Agreed. BJ. R.{Sir Henry Royce} | 11.12.26 | Agreed. F.H.R. now braking of front will be a slight more change than I had imagined i.e. from 40% to 33%. WOR.{Arthur Wormald - General Works Manager} | 9.12.26 | Agreed. RG.{Mr Rowledge} | 9.12.26 | Agreed. RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 11.12.26 | Agreed. DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 10.12.26 | Agreed. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 11.12.26 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 12.12.26 | Agreed OE PN.{Mr Northey} | | CWB. | 19.1.27 | Agreed. CWB. HS.{Lord Ernest Hives - Chair} | 9.12.26 | Agreed. HS.{Lord Ernest Hives - Chair} STAMP: PHANTOM | ||