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 showing experimental wide base rim contours for passenger car tyres.
| Identifier | ExFiles\Box 156\3\ scan0251 | |
| Date | 25th October 1940 | |
| WIDE BASE RIM CONTOURS FOR PASSENGER CAR TYRES EXPERIMENTAL PRACTICE. Diagram 1: 4 1/2 ± .063" 4 1/2-K.{Mr Kilner} .022 MIN 2° .910 MAX .780 MIN .156R MAX 20°±5° 5°±1° 5°±1° .375R 1.000 MIN .750 R .250 R .250 R 1.000 MIN 13.983 DIA. MAX. .512 MIN 2° .031 R MIN. .156R MAX .406 .420 R .770 +.047 -.016 15.968 ± .015 DIA. .078 ± .031 .618 .633 DIA. Diagram 2: 5" ± .063" 5-K.{Mr Kilner} .022 MIN 2° 1.422 MAX .780 MIN .156R MAX 20°±5° 5°±1° 5°±1° .375R 1.000 MIN .750 R .250 R .250 R 1.000 MIN 13.983 DIA. MAX. .512 MIN 2° .031 R MIN. .156R MAX .406 .420 R .770 +.047 -.016 15.968 ± .015 DIA. .078 ± .031 .618 .633 DIA. Diagram 3: 5 1/2 ± .063" 5 1/2-K.{Mr Kilner} .022 MIN 2° 1.933 MAX .780 MIN .156R MAX 20°±5° 5°±1° 5°±1° .375R 1.000 MIN .750 R .250 R .250 R 1.000 MIN 13.983 DIA. MAX. .512 MIN 2° .031 R MIN. .156R MAX .406 .420 R .770 +.047 -.016 15.968 ± .015 DIA. .078 ± .031 .618 .633 DIA. DIAMETERS SHOWN ARE FOR 16" RIMS. APPROVED OCT 25-1940 TR{Capt. F. W. Turner - Finance}-10-30-40-K.{Mr Kilner} | ||