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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).
Standardisation sheet for a 40/50 HP chassis, listing parts not yet fitted to production.

Identifier  ExFiles\Box 29\2\  Scan129
Date  1st February 1927
  
X30GG.
1st February 1927.

40/50 HP. CHASSIS - STANDARDISATION SHEETS.
PARTS NOT YET FITTED TO PRODUCTION CHASSIS.

Date Issued | Title | Date Completed | Series where brought in | Chassis to Test
--- | --- | --- | --- | ---
6.7.26. | Aluminium Induction Pipe and Bend in place of Cast Iron. (?) | 10.8.26. | C-2-B | 26.3.27
6.7.26. | Carburetter made in Alum. instead of bronze. (OK) | 10.8.26. | C-2-B | 26.3.27
22.9.26. | Servo Balance Links 25* (strikethrough) (?) | 29.10.26. | C-2-B | 26.3.27.
22.9.26. | Oil Relief Valve (OK) | 20.10.26. | D-2 | 4.6.27.
23.9.26. | Ignition Governor - Oil Relay Piston using Metal Packing Rings. (OK) | 20.10.26. | D-2 | 4.6.27.
23.9.26. | Fan with Duralumin Blades (OK) | 18.10.26. | D-2 | 4.6.27.
23.9.26. | Solid Key Type Bottom Tappet (OK) | 19.10.26. | C-2-B | 26.3.27.
22.9.26. | Thermometer with electrical contact (OK) | 22.12.26. | C-2-B | 26.3.27.
24.9.26. | Front Silencer (OK) | 19.10.26. | D-2. | 4.6.27.
1.10.26. | Gear Box to suit Plunger controlled Selectors - torsionally free 1st and 2nd pinions, and sliding wheels re-arranged to give definite end clearance. (O.K) | 27.10.26. | D-2 | 4.6.27.
24.9.26. | "D" type C.H.N.S. Keyed Type Change Gear Shaft - Modified bush and spring. (O.K) | 19.10.26. | D-2 | 4.6.27.
24.9.26. | Main Bearings with Steel Shells (O.K) | 27.10.26. | Not known. | 4.6.27.
1.10.26. | Rear Hydraulic Shock Dampers (OK) | 6.12.26. | D-2 | 4.6.27.
  
  


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