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).
Recalibrating speedometers on the 20/25 HP chassis due to customer complaints about them reading too fast.
| Identifier | ExFiles\Box 165\4\ img200 | |
| Date | 11th July 1933 | |
| WST See me HS{Lord Ernest Hives - Chair} Hs.{Lord Ernest Hives - Chair} X1807 BY/Cgh.{W Clough}1/G.11.7.33. 20/25 HP. CHASSIS - SPEEDOMETERS. ---------------------------- We understand from the Repair Department that quite a number of customers complain about the speedometers reading 5% too fast on the mileage recorder, and we propose to correct the calibration figure of 810 revs. per mile to 840, and have the dials graduated similar to what we have in the case of the instruments for the 40/50 HP. chassis, so that the speed indicator does not read slow at the top speeds. The amount of correction we propose to make to the graduation of the dial would be 5% at 80 miles per hour. We would like to know if you are in agreement with the above. BY/Cgh.{W Clough} | ||