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).
Daily report on performance tests and modifications for a Paulin Bentley II, vehicle B-27-LE.
| Identifier | ExFiles\Box 160\3\ scan0068 | |
| Date | 18th January 1939 | |
| 1379 To. Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} Levallois. Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}I/JAB.18.I39. DAILY REPORT. Paulin Bentley II.- B-27-LE. With standard induction system and air silencer complete. 166.793 KPH. 103.61 MPH. No filter in air silencer and no fan. 168.633 KPH. 104.71 MPH. LB.I needles set flush and control over full strong. 171.150 KPH. 106.25 MPH. LB.I needles shortened 1/8" on shank in order to insert further into piston and jets lowered on control 1/8" to 1/4" to enable maximum strength of mixture. 173.088 KPH. 107.5 MPH. Rear wheels and tyres changed to 5.50 x18" Dunlop Racing, conditions as previous test. Maximum engine speed 4,450 RPM. 169.255 KPH. 105.17 MPH. Changed oil from Castrol "XL" to "CW". 3 laps easy, 1.1/2 laps F.T. 168.633 KPH. 104.71 MPH. Engine failed at the end of the 5th lap. (5.30 P.M.) Car returned to Depot for inspection. LB.I needles as fitted standard are far too weak at maximum speed on this car. Will OTS. please note also, that when set for correct idling they are weak on part throttle, running light. 150 to 200 r.p.m. being gained by strengthening up on the control 4 to 5 notches from 1,000 to 2,500 r.p.m. Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} | ||