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).
Frame channel and cruciform member discrepancies and instructions for investigation.
| Identifier | ExFiles\Box 113\5\ scan0044 | |
| Date | 29th January 1937 | |
| -3- RHJ.12/MJ.29.1.37.Cont'd.{John DeLooze - Company Secretary} (2) Messrs. Rubery Owen were instructed to cut the frame to length, with the result that both channels are .125 short at the front end and .175 at the rear end. Since we do not wish to trim to length at Derby Mr. Turner was requested to look into the question of providing Messrs. Rubery Owen with suitable checking equipment so that they can determine the correct length and cut to suit. It was emphasised that the front end should be both of the correct length and square to the top of the frame. (3) The 41.840 width between channels at the rear end is +.150 We are to investigate whether this really matters and it was here suggested that we should mark up the drawings on all the points mentioned so as to provide a guide. (4) The cruciform member is .100 forward of its true position. It was stated by RHO. that any error in the position of the cruciform was likely to involve clearance of brake mechanism, gearbox, etc., and it was important to work from a datum representing back of dashboard. It was also considered advisable to make a form of template to work off the jig to prove that there is clearance for the gearbox. (5) Both channels are offset .150 towards the near side of the frame from a point level with the front engine feet as far back as the battery crossmember. Mr. Buckley agreed to look into this, as one side only is affected, and it is therefore obviously a question of assembly. (6) The righthand channel is not upright between the cruciform feet. HPS.{Horace Percy Smith - Experimental Factory Mgr} stated that the channel was inclined .100 from the vertical. Mr. Buckley was therefore instructed to investigate. (7) The lefthand channel is inclined from the vertical throughout its whole length. Mr. Buckley will also investigate this point. (8) The lefthand channel is .350 low of the rear end and .100 high at the top of the arch at a point over the centre of the rear axle. It was stated that whilst we do not mind a little increased clearance in the arch the position at the lower end is important because it determines the location of the rear dumbiron. | ||