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 log comparing radiator and floorboard temperatures for Standard and Zimmerman type components over a 60-minute period.
| Identifier | ExFiles\Box 75\4\ scan0012 | |
| Date | 12th October 1911 | |
| Header Text: Type R (circled) Radiator Left | Floor Board Temp | Temperature of atmosphere [Strikethrough: Standard] Type | [Strikethrough: Zimmerman] Type | [Strikethrough: Standard] Type | [Strikethrough: Zimmerman] Type | with Standard Type | with Zimmerman Type X819 500-R 3500 Table Data: Time | Radiator Left (Standard) | Radiator Left (Zimmerman) | Floor Board (Standard) | Floor Board (Zimmerman) | Atmosphere (Standard) | Atmosphere (Zimmerman) 0 | 16.2 | 19 | 16.2 | 22 | 16.2 | 19.5 5 min | 41 | 41.3 | 16.2 | 22 10" | 59 | 56 | 17 | 22 15" | 67 | 64 | 17.4 | 22.2 20" | 72 | 68 | 18 | 22.5 25" | 76.5 | 72.2 | 19.3 | 23 30" | 78 | 74 | 20 | 24 35" | 80.5 | 75.5 | 21.5 | 24.3 40" | 81.7 | 77 | 23 | 26 45" | 82 | 77.5 | 24 | 26.6 with engine accelerated 50 min | 82.5 | [Strikethrough: 79.5] | 25 | 27 55" | 85 | [Strikethrough: 82.5] | 26.5 | 27.1 60" | 85.5 | [Strikethrough: 82.5] | 26.5 | 28 Handwritten Notes: - [Green ink, center]: Practically no difference - [Right side]: Test of Zimmerman radiator as compared with standard on (Orme trans) car. Standing. Fixed ignition. Speed 500 revs (about). on 6 hours. 1686. - [Center-right]: see other records EP{G. Eric Platford - Chief Quality Engineer} 12/10/11 - [Bottom]: (The temperatures are centigrade) | ||