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).
Weight comparison of brake gear components between the 25/30 HP and Wraith models.
| Identifier | ExFiles\Box 10\5\ 05-page037 | |
| Date | 15th February 1937 | |
| BRAKE GEAR. 15.2.37. COMPARISON OF 25/30 H.P. AND WRAITH WEIGHTS. 25/30 H.P. WRAITH. lbs. ozs. lbs. ozs. Front Brake Assembly ........ 23 6 unknown - say 22 - Rear " " ......... 76 10 29 - Front Drum ................ 13 12 13 - Rear " " ......... 26 - 15 8 TOTAL = 139 12 79 8 Saving ........... 60 4 | ||