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).
Weight analysis blueprint for Packard hubs.
| Identifier | ExFiles\Box 127\1\ scan0291 | |
| Date | 1st January 1929 | |
| WEIGHT ANALYSIS PACKARD HUBS 1929 12 RIVETS 5 RIVETS 12" 3 1/4" 3 8/10" 6 9/10" 10 2/10" 11 9/10" 17/32 SECTION 1/4" SECTION 1/8" SECTION 1 1/2" 2 1/4" 3 1/2" WEIGHT REAR HUB & DRUM: 16 LBS 9 OZS. WEIGHT FRONT HUB & DRUM: 15 LBS 7 OZS. WEIGHT SMALL ROLLER BRG. FRONT HUB: 4 1/2 OZS WEIGHT LARGE ROLLER BRG. FRONT HUB: 8 7/8 OZS. WEIGHT SMALL ROLLER RING: 2 7/8 OZS. WEIGHT LARGE ROLLER RING: 5 5/8 OZS. WEIGHT OIL RETAINING RING: 2 1/2 OZS. | ||