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).
Proposal to replace bonnets with shutters with louvered or plain bonnets.
| Identifier | ExFiles\Box 171\1\ img102 | |
| Date | 11th May 1927 | |
| RR 755 REVISED (IOH) (DE 649 9-12-26) 5M. 2/1162. ORIGINAL COMPLETED 11.7.27 STANDARDISATION of CHASSIS PARTS. Description of Parts. BONNET WITH out SHUTTERS. FHR Origin. Considered unnecessary. Experimental Test Report. It is proposed to fit only louvered bonnets or plain bonnets. The present shutters are very rarely used and detract from the appearance of the bonnet. Louvred bonnets will be fitted for hot countries. Road Test Report. with front shutters only The gain in cooling efficiency with the shutters open is 4 to 5%. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ 2. 18. 3 Cost of New Part. £ 1. 9. 3 Difference per Car. £ 1. 9. 0 saving. Signature from Cost Dept. that above is correct. My/Rb.{R. Bowen} 17.5.27 [Right hand side box] 8260 X No. 1085 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..........£......... [Approval Table] INITIAL | DATE | REMARKS BJ. | 11.7.27 | Agreed. B.Johnson. R.{Sir Henry Royce} | 12/5/27 | Agreed FHR WOR.{Arthur Wormald - General Works Manager} | 24.5.27 | Agreed. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 13.5.27 | Agreed. Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 13.5.27 | Agreed. Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 12.5.27 | Agreed. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 11.5.27 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 12-5-27 | Agreed CEElliott PN.{Mr Northey} | | CWB. | | Hs.{Lord Ernest Hives - Chair} | 11.5.27 | Agreed. Hs.{Lord Ernest Hives - Chair} [Green stamp overlaying document text: ACTION] | ||