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).
Summary table of vehicle component complaints and resolutions for specific models over six months.
| Identifier | ExFiles\Box 130\1\ scan0227 | |
| Date | 14th May 1935 guessed | |
| - 4 - CLUTCH SLIPS. 25 HP. PH.II. TOTAL. AND TOTAL. REMARKS. March Quarter. C.C. 82 13 95) C.P. 8 12 20) 115 Slipping is often due to oil on the fabrics Depot Sheets Hd.{Mr Hayward/Mr Huddy}185, Hd.{Mr Hayward/Mr Huddy}196 and Hd.{Mr Hayward/Mr Huddy}205. Pressure ring serrations are being modified to prevent binding. See Depot Sheet Hd.{Mr Hayward/Mr Huddy}242. Depot Sheet Hd.{Mr Hayward/Mr Huddy}254 describes treatment for clutch slip. Previous Quarter. C.C. 83 16 99) C.P. 12 6 18) 117 Six Months. 185 47 232 232 DYNAMO COMPLAINTS. March Quarter. C.C. 39 9 48) C.P. 5 - 5) 53 These are mainly noisy ball races. Roller bearing now being fitted at one end of armature to replace ball bearing and a reduction in these complaints is anticipated. Voltage control on 20/25 HP. and 40/50 HP. should reduce complaints of undercharging etc. Previous Quarter. C.C. 30 7 37) C.P. 5 3 8) 45 Six Months. 79 19 98 98 TOTAL EXHAUST COMPLAINTS. March Quarter. C.C. 22 31 53) C.P. 32 20 52) 105 Previous Quarter. C.C. 19 51 70) C.P. 23 24 47) 117 Six Months. 96 126 222 222 EXHAUST MANIFOLD CRACKED OR BROKEN. March Quarter. C.C. - - -) C.P. - - -) - Early 20/25. Exhaust manifolds with cooling fins are now available. No failures of this type yet reported. Depot Sheet Hd.{Mr Hayward/Mr Huddy}229. PH.II. Flange bosses now thickened up to prevent cracking. Previous Quarter. C.C. - 1 1) C.P. - 1 1) 2 Six Months. - 2 2 2 | ||