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).
Cost comparison for manufacturing different dynamo strap types.
| Identifier | ExFiles\Box 168a\3\ img275 | |
| Date | 3rd February 1936 | |
| PRIVATE v6'-2 WST See me Sft{Mr Swift}/ W.1/DB.{Donald Bastow - Suspensions}3.2.36. COST REDUCTIONS. 25/30 HP. & BENTLEY DYNAMO LUSTRES L.EC.4941. In reply to S/Lic.2/HP.31.1.36. regarding the above, we have estimated the cost of manufacturing and we find this to be lower than the Bentley single strap type. The comparative figures for the three types for material and labour cost are:- V/25 ID. two straps) LGP. D.61. ) 5s - 3d. Bentley (One strap ) LGP. D.B.88. ) 2s - 4d. Design to L.EC.4941. ) 2s - 0d. Sft.{Mr Swift} | ||