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).
Requesting to test a 25 HP car to observe the exhaust boom and fish tail hiss.
| Identifier | ExFiles\Box 104\2\ scan0134 | |
| Date | 14th May 1935 | |
| 4523 To JLE.{J. Lee Evans - Chassis Test Manager} c. to Cx.{Major Len W. Cox - Advertising Manager} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}18/KW.14.5.35. 20/25 HP. Exhaust Snout. Thank you for LE4/C.13.5.35. We should like to have the opportunity of trying one of these 25 HP. car with the exhaust boom at 30 m.p.h., and also of observing the fish tail hiss at high speeds. We should be glad, therefore, if you would let us know when a car is available, and we will come to Park Wards to try it. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||