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).
Blueprint comparing designs for a continuous oil system in Allison and Kestrel crankshafts.
| Identifier | ExFiles\Box 173\2\ img040 | |
| Date | 6th February 1934 | |
| ALLISON CRANKSHAFT CONTINUOUS OIL SYSTEM DRILL KESTREL PIN DRILLING ARRANGED AT CONVENIENT ANGLE TO DRILL THROUGH PIN BORE DRILLED ON ANGLE ALTERNATE THROWS. MOD KESTREL CONTINUOUS FLOW SOME PLACES WHERE TWO HOLES DRILLED FROM ONE JOURNAL MAKING LARGE HOLE HERE COOLED ALLISON SCH. BE ADOPTED THINK ANGLE TOO ACUTE, BUT COULD BE DRILLED AS SHOWN FOR TEST. R.H.C. 6-2-34 | ||