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).
Test results table comparing bonnet ventilation and radiator performance under different conditions and configurations.
| Identifier | ExFiles\Box 29\3\ Scan270 | |
| Date | 1st September 1930 guessed | |
| Condition of Bonnet ventilation 19-EX | | Sq. tube rad. All out Std. fan, belt choc-o-bloc | Sq. tube rad. All out Altered fan Belt choc-o-bloc. | Sq. tube rad. 75 M.P.H. Std. Fan Belt Choc-o-bloc. | Sq. tube rad. 80 M.P.H. Std. Fan Choc-o-bloc. | Sq. tube Rad. 60 MPH. Altered Fan. | |---|---|---|---|---|---| | Shutters closed. | | | 85°C. (79°C.) | 81°C. (74°C.) | | | Shutters open. | | 83°C. (75°C.) | 81°C. (74.2) | 77°C. (69.2°C) | | | Louvred bonnet. | 80°C. (72.5) | 78°C. (71°C.) | 78°C. (71.8) | 72°C. (66) | 69° (68.0) | Atmospheric temperature 20°C. Figures in brackets, bottom water temperature. | | Square tube radiator. | Standard 6 m/m.{Mr Moon / Mr Moore} 7 1/2 m/m.{Mr Moon / Mr Moore} round tube. | |---|---|---| | Weight of matrix empty. | 132 lbs. | 129 lbs. | | Weight of matrix full. | 173.25 lbs. | 174.5 lbs. | | Qty. of water in matrix. | 4.125 galls. | 4.55 galls. | | ||