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).
Maximum possible cylinder bore dimensions for the Peregrine engine.
| Identifier | ExFiles\Box 2\3\ B002_X 116 117 119 120-page47 | |
| Date | 16th November 1935 | |
| To Ha/Rn.{Mr Robinson} x 119 Ha/Bsth.10/KW.16.11.35. Peregrine. If the cylinder barrels were cast integral with the block, the maximum possible bore would be 2.900" with water between the barrels and 3.250" without. The present bore is 2.725". This allows .200" of water and barrels .200" thick in the first case, and a common wall .250" thick in the second. Ha/Bsth. | ||