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).
Sizing of ignition wire tubes for large bore Bentley and 25/29 HP models.
| Identifier | ExFiles\Box 168\1\ img233 | |
| Date | 19th November 1935 | |
| BY.{R.W. Bailey - Chief Engineer} c. Hs{Lord Ernest Hives - Chair}/Wst. WST 86117 E.{Mr Elliott - Chief Engineer}/JNR.{Charles L. Jenner}2/HP.19.11.35. Ignition Wire Tubes. In regard to the decision to make the wire tubes larger on the large bore Bentley and the 25/29 HP, we notice that at the moment the Bentley is .937" o/d and the 25-HP. 1.075" diameter. The larger size is ample for the 5 H.T. wires and this size should be used on both cars. It may be possible to use the wiring tube E.57530 exactly as it stands but with new brackets. The elbow above the distributor should be also made 1.075". E/JNR.{Charles L. Jenner} | ||