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).
The parts list for separating the Bentley Tachometer Drive from the Dynamo to prevent oil leakage.
| Identifier | ExFiles\Box 168a\3\ img432 | |
| Date | 26th September 1937 | |
| 6142 c. M/BG. BT{Capt. J. S. Burt - Engineer}/RR.3/B.26.9.37. Bentley Tachometer Drive - D.CD.16. In order to separate the Tachometer Drive from the Dynamo to ensure that in the event of oil leakage, the oil will not get on to the commutator, we have prepared Scheme D.CD.16. Will you please put one dynamo in hand to the following new pieces :- Sec.8080. DB.{Donald Bastow - Suspensions}1471 - Bearing Bracket - Tachometer Drive. 1 off. DB.{Donald Bastow - Suspensions}1472DC - End Cap - Ball Bearing - Tacho.Drive. 1 off. DB.{Donald Bastow - Suspensions}1473DC - Bearing Bracket, C.L. 1 off. DB.{Donald Bastow - Suspensions}1474DC - Oil Retaining Plate - Tacho.Drive. 1 off. DB.{Donald Bastow - Suspensions}1475 - End Cover. 1 off. DB.{Donald Bastow - Suspensions}1478 - Washer - Oil Retaining. 1 off. DB.{Donald Bastow - Suspensions}1479 - Rod - Dipstick. 1 off. DB.{Donald Bastow - Suspensions}1480 - Head - Dipstick. 1 off. DB.{Donald Bastow - Suspensions}1481 - Assembly of Dipstick-Tachometer Drive. 1 off. DB.{Donald Bastow - Suspensions}1482 - Idler Wheel Support. 1 off. DB.{Donald Bastow - Suspensions}1551 - Assembly of Cover - Dynamo. 1 off. KB.206 - Stud. 6 off. Standard Parts not required :- E.35332 - Stud - Bearing Bracket. 6 off. DB.{Donald Bastow - Suspensions}1079DC - Bearing Bracket, C. L. 1 off. DB.{Donald Bastow - Suspensions}1081 - End Cover. 1 off. DB.{Donald Bastow - Suspensions}1090 - Assembly of Cover - Dynamo. 1 off. DB.{Donald Bastow - Suspensions}1084 - Idler Wheel Support Tachometer Drive. 1 off. DB.{Donald Bastow - Suspensions}1211 - Breather Plug. 1 off. DB.{Donald Bastow - Suspensions}1213 - Plug. 1 off. DB.{Donald Bastow - Suspensions}1214 - Adapter - Breather Plug. 1 off. The remainder of the parts for this section are to LOP. DB.{Donald Bastow - Suspensions}1101. -Contd- | ||