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).
Modification details for Phantom II rear road springs, comparing specifications before and after fitting an extra 2nd plate.
| Identifier | ExFiles\Box 16\7\ Scan309 | |
| Date | 18th October 1930 | |
| y7410 To BY.{R.W. Bailey - Chief Engineer} C. F.{Mr Friese} Dept. RE. PHANTOM II ROAD SPRINGS. 18.10.30. We have modified to Scheme 1364 one pair of rear Phantom II road springs, by fitting an extra 2nd. plate. Particulars of these springs before and after modification are appended herewith. 1st. Spring. Before Mod. After Mod. Actual Increase in lbs. etc. Drawing No. F.79439. F.82910. -------- Piece No. F.79444. - -------- Lubrication No. F.80879 - -------- Type 1200 lbs. 1300 lbs.+ -------- Loaded Lbs. 1218 lbs. 1364 146 lbs. Loaded Camber Flat. Flat. -------- Loaded Length 66" 66" -------- Initial Camber (After Test) 8.25 8.625 0.375". 2nd. Spring. Before Mod. After Mod. Actual Increase in lbs. etc. Drawing No. F.79439. F.82910. -------- Piece No. F.79444. -- -------- Lubrication No. F.80879. -- -------- Type 1200 lbs. 1300 lbs.+ -------- Loaded Lbs. 1225 lbs. 1330 lbs. 105 lbs. Loaded Camber Flat Flat -------- Loaded Length 66" 66" -------- Initial Camber (After Test) 8.25 8.700 0.450 (As per BY/EM4/J.23.9.30.) Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} | ||