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).
Specification chart detailing vehicle clearances and measurements under normal and loaded conditions.
| Identifier | ExFiles\Box 92\1\ scan0318 | |
| Date | 18th November 1936 | |
| Copy for File NORMAL ||Buffer Clearance|GROUND & CENTRE OF TOP REAR SHACKLE BOLT.|Front Pan to GROUND.| |---|FRONT|REAR||| ||TOP|BOTTOM|||| |32 EX|1.9|1.9|4.6|NS{Norman Scott} 15.125|9.75"| | |2.0|1.75|4.75|OS 15.000| | |36 EX|2.2|1.45|3.0|NS{Norman Scott} 13.85|9.25"| | |2.45|1.0|2.8|OS 12.6| | |37 EX|2.3|1.42|4.25|NS{Norman Scott} 14.5|9.15"| | |2.42|1.23|4.15|OS 14.2| | LOADED ||Buffer Clearance|GROUND & CENTRE OF TOP REAR SHACKLE BOLT.|Front Pan to GROUND.|LOAD DESCRIPTION| |---|FRONT|REAR|||| ||TOP|BOTTOM|||| | |2.05|1.75|3.1|13.000|9.5"|4. PASSENGERS. 2. CWTS LUGGAGE.| | |2.25|1.55|3.0|13.000"| | | | |2.3|1.3|1.0|10.200"|9.05"|6. PASSENGERS. 2. CWTS. LUGGAGE.| | |2.6|.9|.7|10.000| | | | |2.4|1.18|2.75|12.500"|8.75"|4. PASSENGERS. 2. CWTS. LUGGAGE.| | |2.46|1.06|2.50|12.25"| | | Rm{William Robotham - Chief Engineer} / F.D. 18.11.36. | ||