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).
Increase in the number of bolts on the front exhaust expansion box flange from 4 to 8.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan214 | |
| Date | 16th July 1930 | |
| FROM DA.{Bernard Day - Chassis Design} Copy to HS.{Lord Ernest Hives - Chair} P. 2. EXHAUST SYSTEM - FRONT EXPANSION BOX. DA{Bernard Day - Chassis Design}1/M15/30 ORIGINAL x 7230. With reference to HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}1/MJ11730., we suggest that the flange connecting the down pipe with the expansion chamber should have 8 bolts instead of 4. This brings it more into line with the rear flange which has a great many bolts and should ensure better heat connection and reduced blows. [Stamp: RECEIVED DA.{Bernard Day - Chassis Design} 16 JUL 1930 HS{Lord Ernest Hives - Chair}] | ||