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).
Table comparing radiator performance and specifications under various bonnet ventilation and fan configurations.
Identifier | WestWitteringFiles\U\August1930-November1930\ Scan020 | |
Date | 28th February 1921 guessed | |
Top Table: | Condition of Bonnet vent-ilation 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. 60 M.P.H. Std. Fan Choc-o-bloc. | Sq. tube rad. 50 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. (71.3) | 72°C. (66) | 69° (63.0) | Atmospheric temperature 20° C. Figures in brackets, bottom water temperature. Bottom Table: | | Square tube radiator. | Standard 6 mm. 7 1/2 mm. 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. | | ||