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Crankshaft bearing clearances for a Phantom III Unit Nº3, with wear measurements taken before and after a 10,000-mile road test.

Identifier	ExFiles\Box 91\3\ scan0047
Date	5th August 1936

PHANTOM III UNIT Nº3 CRANKSHAFT BEARING CLEARANCES. BEFORE & AFTER 10,000 MILES ROAD TEST. CRANKSHAFT: E.86615 - Y.C.M. (VK.2888) MAIN BRGS: E.84771 - WM/T BIG END BUSHES: E.84683-4 - WM/T PLAIN CONN-RODS: E.86118-SIN (MARINE TYPE) Vertical text on right: 11044 TABLE: BRG Nº \| WHEN MEASURED \| JOURNAL MAIN BRG DIA. \| JOURNAL MAIN BRG BORE \| JOURNAL MAIN BRG CLEARANCE \| CRANKPIN BIG-END DIA. \| CRANKPIN BIG-END BORE \| CRANKPIN BIG-END CLEARANCE \| OUTER DIA CONN ROD BUSH \| BORE OF PLAIN ROD \| CLEARANCE ---\|---\|---\|---\|---\|---\|---\|---\|---\|---\|--- 1. \| BEFORE \| 2.7488 \| 2.7513 \| .0025 \| 2.2489 \| 2.2513 \| .0024 \| 2.7486 \| 2.750 \| .0015 \| AFTER \| 2.7486 \| 2.7515 \| .0029 \| 2.2488 \| 2.2517 \| .0029 \| 2.7484 \| NIL. \| .0016 \| WEAR. \| .0002 \| .0002 \| \| .0001 \| .0004 \| \| .0001 \| \| 2. \| BEFORE \| 2.7488 \| 2.7513 \| .0025 \| 2.249 \| 2.2513 \| .0023 \| 2.7485 \| 2.750 \| .0015 \| AFTER \| 2.7484 \| 2.7523 \| .0039 \| 2.2489 \| 2.2516 \| .0027 \| 2.7483 \| 2.7501 \| .0018 \| WEAR. \| .0004 \| .001 \| \| .0001 \| .0003 \| \| .0002 \| .0001 \| 3. \| BEFORE \| 2.7488 \| 2.7513 \| .0025 \| 2.2491 \| 2.2513 \| .0022 \| 2.7485 \| 2.750 \| .0015 \| AFTER \| 2.7485 \| 2.752 \| .0035 \| 2.2489 \| 2.2518 \| .0029 \| 2.7485 \| 2.7502 \| .0017 \| WEAR. \| .0003 \| .0007 \| \| .0002 \| .0005 \| \| NIL. \| .0002 \| 4. \| BEFORE \| 2.7489 \| 2.7513 \| .0024 \| 2.249 \| 2.2513 \| .0023 \| 2.7485 \| 2.750 \| .0015 \| AFTER \| 2.7486 \| 2.7517 \| .0031 \| 2.2489 \| 2.2516 \| .0027 \| 2.7485 \| 2.7502 \| .0017 \| WEAR. \| .0003 \| .0004 \| \| .0001 \| .0003 \| \| NIL. \| .0002 \| 5. \| BEFORE \| 2.7488 \| 2.7513 \| .0025 \| 2.249 \| 2.2513 \| .0023 \| 2.7485 \| 2.750 \| .0015 \| AFTER \| 2.7484 \| 2.7516 \| .0032 \| 2.2489 \| 2.2517 \| .0028 \| 2.7482 \| 2.7501 \| .0019 \| WEAR. \| .0004 \| .0003 \| \| .0001 \| .0004 \| \| .0003 \| .0001 \| 6. \| BEFORE \| 2.7488 \| 2.7513 \| .0025 \| 2.249 \| 2.2513 \| .0023 \| 2.7485 \| 2.750 \| .0015 \| AFTER \| 2.7483 \| 2.752 \| .0037 \| 2.2489 \| 2.2517 \| .0028 \| 2.7484 \| 2.7501 \| .0017 \| WEAR. \| .0005 \| .0007 \| \| .0001 \| .0004 \| \| .0001 \| .0001 \| 7. \| BEFORE \| 2.749 \| 2.7513 \| .0023 \| \| \| \| \| \| \| AFTER \| 2.7487 \| 2.752 \| .0033 \| \| \| \| \| \| \| WEAR. \| .0003 \| .0007 \| \| \| \| \| \| \|

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).