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 comparison between standard brakes and side by side brakes, detailing component weights and total weight saved.
| Identifier | ExFiles\Box 66\5\ scan0141 | |
| Date | 1st May 1928 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/RHC.{R. H. Coverley - Production Engineer} C. to BJ. WOr.{Arthur Wormald - General Works Manager} C. to R.{Sir Henry Royce} BY.{R.W. Bailey - Chief Engineer} C. to OA. 48360 Hs{Lord Ernest Hives - Chair}/RHCL/LG3. 5. 28. RE. COMPARATIVE WEIGHTS OF STD: AND SIDE BY SIDE BRAKES. We give below the above weights :- Complete Weights Standard Brake to G.74003....... 115.00 lbs. Axle tube....................... 63.50 " G.74002 Driving shaft - long.... 31.00 " " " " - short... 28.75 " Rear hubd without road wheels to G.74928............... 128.00 " 366.25 lbs. Side by Side Brake Gear to G.76350......................... 98.00 lbs. Axle tube....................... 61.00 " G.76479 Driving shaft - long.... 31.00 " " " " - short... 29.00 " Rear hubs complete without road wheels to G.76341............... 100.00 " 319.00 lbs. TOTAL WEIGHT SAVED BY FITTING SIDE BY SIDE BRAKES = 47.25 lbs. Hs{Lord Ernest Hives - Chair}/R.H.Coverley. | ||