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).
List of modifications and component updates for the 3 1/4 Litre Bentley and 20/25 HP chassis.
| Identifier | ExFiles\Box 30\4\ Scan234 | |
| Date | 14th July 1934 | |
| 3 1/4 LITRE BENTLEY CHASSIS. -9- BY.1/G.14.7.34. N.Sch. 4067 Modfn. to Front Axle Frg. to Reinforce it at mouth of Brake Tunnel ....... Recd. 30.5.34. Detail drawings completed and issued ..... 7.6.34. N.Sch. 4069 Modfn. to Front Road Springs .............. Recd. 14.6.34. Detail drawings not required. N.Sch. 4095 Modfn. to T. and 3rd. S.M. Sleeve to prevent Rattles (Exp). ............... Recd. 19.6.34. Detail drawings will be put in hand as soon as possible. N.Sch. 4101 Mod. to T. and 3rd. S.M. Sleeve. Alternative to N.Sch. 4095 (Expl.) ................ Recd. 19.6.34. Detail drawings will be put in hand as soon as possible. RR.Sch. 695 Mod. to prevent brake levers fouling Battery X-member. Detail drawings completed and issued ........ 7.6.34. LeC. 3984 Mods. to Phase Changing Mechanism ...... Recd. 14.6.34. Detail drawings will be put in hand as soon as possible. 20/25 HP. CHASSIS. ----------------- LeC. 3843 1 1/4" Horizontal Carburetter ........... Recd. 29.5.34. Detail drawings completed and issued ........ 23.5.34. RR.Sch. 685 Dipper Switch Control applied to Steering Head. RR.Sch. 686 Mixture Control on Instrument Board. RR.Sch. 687 Mixture Control operated from Instrument Board. These schemes will not be detailed until we are requested to fit RR. automatic controls to hydraulic shock dampers on customers cars before D.Z. series. RR.Sch. 693 Buffer for Bonnet Side Plates. Awaiting approval. LeC. 3891 Centrally Mounted Radiator ........... Recd. 14.5.34. Detail drawings completed and issued ........ 1.6.34. LeC. 3893 Cantilever Pedals ................ Recd. 14.5.34. Detail drawings completed and issued ........ 15.6.34. | ||