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).
Body rattles and frame stiffness, detailing defects found in Goshawk body brackets on 40/50 and Goshawk frames.
| Identifier | WestWitteringFiles\K\October1923\ Scan117 | |
| Date | 12th October 1923 | |
| TO [illegible] FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} c. to [illegible] HS.{Lord Ernest Hives - Chair} RE. BODY RATTLES, AND FRAME STIFFNESS. We visited Messrs Hooper's Works on Wednesday last, and made some tests on both 40/50 and Goshawk frames on lines illustrated in the sketch below:- [Sketch of a frame bracket test setup] Labels on sketch: W, Poor Heel, ISB, DISTANCE TUBE 20 H.P 40/50 H.P We found that the Goshawk body brackets had apparently the following defects:- (1) That they diaphragm the web of the frame. (2) That there was not sufficient heel between the bolt and the end of the bracket allowing the latter to dig into the woodwork. (3) That the bearing area of the bracket was small and would eat into the bottom of the runner. (1) | ||