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).
Characteristics and naming of an engine thud, suggesting it be called a throb or 'the Gilpin' trouble.
| Identifier | ExFiles\Box 65\4\ scan0339 | |
| Date | 21th May 1926 | |
| S/W. E.P. Copy to Hs.{Lord Ernest Hives - Chair} Hs.{Lord Ernest Hives - Chair} x8050 CWB4/GM/21-5-26. Engine thuds. Reference Hs{Lord Ernest Hives - Chair}3/LGS526. With reference to EP{G. Eric Platford - Chief Quality Engineer}4/H19526 on the above subject it is probably that, what I have described as a thud would be more properly described as a throb, and is what you have so described. I am referring to the noise which was formerly so pronounced on 87-LC Bell-Scott and which was much improved with the new engine. As you remark, the effect is a noise and not a sensation of feeling. It is totally different from the galloping horses effect which it has been suggested we should rechristen 'the Gilpin' trouble, which seems a very good name for it. I will discuss this matter with you further when I am next in Derby which I anticipate will be on Wednesday or Thursday next, but I will telegraph you the exact day. CWB. | ||