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).
Modifications for chassis 8-EX for a 10,000-mile test.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan235 | |
| Date | 14th September 1925 | |
| R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. ORIGINAL EXPERIMENTAL REPORT. Expl. No. REF: Hs{Lord Ernest Hives - Chair}2/LC14.9.25. C To a.{Mr Adams} Frommer. c. to CJ. BY.{R.W. Bailey - Chief Engineer} c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} X8770 X8940 RE: CHASSIS 8-EX - BEING PREPARED FOR 10,000 MILES TEST. (B. TYPE) The above chassis is fitted with the following new experimental parts. All other sections in accordance with standard specification. A complete specification of chassis will be issued later. 1. Connecting rods (3 in N/S and 3 in M/S) with improved white-metalling to LeC.2081. 2. Modified main bearing oil pipes using brazed steel nipples instead of flanging pipe to Derby scheme 656. 3. Cover to oil gallery in crankcase - flywheel end (similar to Goshawk Derby scheme 680). 4. Smaller dia. induction pipe and bend (water heated) to LeC.2058. 5. Improved lubrication to tappets to Derby scheme 634. 6. Carburetter throttle spindle location to LeC.2064. 7. Stainless steel filter stud .150 mesh - monel filter to LeC.2127. 8. Ignition tube with steel centres to Derby scheme 611. 9. Calorised exhaust downtake pipes E.72868-9-70. 10. Water pump and water pipes with corrugated instead of plain connections - BY/SS{S. Smith}6/DB{Donald Bastow - Suspensions}27.8.25. 11. Lightened clutch to LeC.2067. Weights - { Standard 181 lbs. 12 ozs. { Lightened 152 lbs. 8 ozs. { DIFF: 29 lbs. 4 ozs. 12. Simplified clutch stop to LeC.2080. 13. Hardy multiple disc fabric coupling to LeC.2054. 14. Torsionally free 1st. and 2nd. speed pinions with std. splines to LeC.2021. contd :- | ||