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 report on engine and blower performance, noting issues with temperature, noise, vibration, and gaskets.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page204 | |
| Date | 16th July 1932 | |
| -2- Hs{Lord Ernest Hives - Chair}/Ru.1/1A.16.7.32.Cont'd.{John DeLooze - Company Secretary} Boost Temperature. At higher speeds the induction pipe temp. rises rather rapidly when maintaining full throttle, we are getting figures. Plug Suitability. We ran on Standard Aviation fuel. K.1. plugs were not cool enough for the work but A.2 plugs functioned without preigniting. Blower Drive. The blower was driven through a long flexible shaft which E.{Mr Elliott - Chief Engineer} was considering as the actual drive flexibility; the half period at 2700 R.P.M. was difficult to pick out, its intensity being less than when the blower was not there, but another period of slightly greater intensity was noticed at 200 R.P.M. Both would probably have easily been eliminated if the blower motor had been used as the inertia for a damper, this E.{Mr Elliott - Chief Engineer} had proposed. Blower Noise. The blower intake noise was very little up to about 2000 R.P.M. but above this became noticeable and at one or two periods had a distinct and piercing wail but at no time was more noisy than the Rootes. Blower Vibration. There was a certain amount of vibration to be felt on the blower casing but its magnitude was difficult to determine since the blower was bolted directly to the test bed. Gasket Failures. We blew a gasket in the first run up supercharged, possibly this is because C & A gaskets are not good enough for supercharging but we are watching the point. There is a slight tendency for the automatically controlled extra cyl lubrication to the cyls to oil up plugs on the road, we are issuing a separate report on this item later. | ||