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).
Confirmation of a phone message detailing testing procedures for Kestrel connecting rods.
| Identifier | ExFiles\Box 179b\1\ img315 | |
| Date | 6th February 1933 | |
| -RG.{Mr Rowledge}) FROM R.{Sir Henry Royce} HS.{Lord Ernest Hives - Chair}) C...to CO. WDR. E.{Mr Elliott - Chief Engineer} BH. [Strikethrough] CONFIRMATION OF 'PHONE MESSAGE TO DERBY. ORIGINAL. [Strikethrough] KESTREL CONNECTING RODS. Please make the following test without delay: (1) You have 7 main bearings: arrange for 6 of these to feed the 6 crank pins, preferably separately, but grouped to avoid delay in the first instance. (2) The 7th. can be used to find the oil pressure in the adjacent crank pin which should be only a little less than that of the supply to its bearing. (3) My impression is that you will find this very much less. (4) Proceed to increase the freedom of the inflow into the inside of the crankshaft. (5) Measure the quantity of oil taken by this bearing before and after the modification (4). (6) The oil pressure inside the crank pin should be very nearly as great as the supply (gallery pipe) and the centrifugal force at the radius of the exit hole. Naturally this extra pressure will not shew in the above test. (7) Very useful information would be gained by changing the rod or rods from fork and blade to articulated, which I have pointed out should hold the oil better. R.{Sir Henry Royce} | ||