Blueprint showing a modification to the breather connection on a Phantom II crankcase.
| Identifier | ExFiles\Box 102\1\ scan0120 | |
| Date | 30th March 1933 | |
| LEC3420 REFER TO LEC3354 FOR DESIGN OF BREATHER CONNECTION. TO CARBURETTER. E OF NO 4 CYL: CRANK WEB SECTION THRO A.A. .500 o {Mr Oldham} /D 20SWG (.036). REPLACED WITH .250 o {Mr Oldham} /D .5625 o {Mr Oldham} /D - 21SWG (.032) SWEAT IN SOCKET. E OF NO 5 CYL: MODIFICATION TO BREATHER CONNECTION ON PHANTOM II CRANKCASE CRANKCASE & SOCKET ARE AS SHOWN ON LEC 3354 SCALE 1/1 R.H.S. Ellay 21/3/33 ROLLS-ROYCE, LTD. PRINT ROOM MAR 30 1933. DERBY. LEC3420 | ||
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).