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).
Carburetter silencer noise and steering concerns on the Phantom II Continental cars.
| Identifier | ExFiles\Box 13\4\ 04-page132 | |
| Date | 18th March 1933 | |
| Hs.{Lord Ernest Hives - Chair} C.BY. Silencer. [strikethrough] x7090 EP{G. Eric Platford - Chief Quality Engineer}6/H18.3.33. re. PHANTOM II. NEW TYPE CARBURETTER SILENCERS. Further to ours EP{G. Eric Platford - Chief Quality Engineer}13/H23.12.32. and yours Hs{Lord Ernest Hives - Chair}1/MJ.28.12.32, Sales are complaining of the suction noise and roar on the Phantom II. 'O' Series Continental Cars, which are now coming through from Coachbuilders as complete cars. We do not think fixing inlet silencers necessary on such cars, but referring to the last paragraph of your memo, we are now delivering chassis (non-Continental type) with new type carburetters fitted and still without inlet silencers. With such cars, even for ordinary touring speeds (11 tooth axles) the roar and suction noise is objectionable. We have just accepted for delivery Sg{Arthur F. Sidgreaves - MD}'s new trials chassis (104-MY), which comes under this heading. Apart from the suction noise (Sg{Arthur F. Sidgreaves - MD}'s present car, 58-GN has carburetter silence fitted) the chassis is not fitted with the non-resonant silencer, and is inclined to have "boom periods" which have so far been absent on the Phantom II "O" Series Continental models (non-resonant silencer). The matter of fixing improved silencers, inlet and outlet, as standard and possibly retrospectively, appears to require urgent consideration. We also fear Sg.{Arthur F. Sidgreaves - MD} will not like the steering for high speed work on his new chassis, although quite standard, after his experience of the steering on 58-GN (Marle type), which to me seemed particularly good.for absence of joggles, a stability. [Handwritten] present PII with [strikethrough] low rated springs for high speed work are very unstable. Above are chosen impressions, hope to confirm otherwise when bodies fitted. EP.{G. Eric Platford - Chief Quality Engineer} EP{G. Eric Platford - Chief Quality Engineer} | ||