Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Comparison table of camshaft and valve performance data across various engine models.

Identifier  ExFiles\Box 17\6\  Scan297
Date  18th July 1934
  
-2-
Ha/Bath.3/KW.18.7.34

| Engine | Camshaft | Valve & Fittings | Actual Bouncing Speed | Theo. Bouncing Speed | Ratio Theo.Speed / Act.Speed |
|---|---|---|---|---|---|
| Phantom II | E.82448 | LOP E.83438 | 3500 | 4300 | 1.23 |
| Bentley | EB.1085 | LOP.EB.141 & Light Springs | 4350 | 4250 | .985 |
| Bentley | EB.1085 | LOP.EB.141 & Springs hs.{Lord Ernest Hives - Chair}1125 in Valve EX.12089. | 4400 | 4550 | 1.035 |
| Bentley | EB.1085 | LOP EB.141 | 4800 | 5300 | 1.10 |
| 20/25 HP. | E.59919 | E.55577. | 4100 | 4670 | 1.14 |
| Kestrel. | E.32801 | Springs E.29832/3 | 3200 | 3200 | 1.0 X |
| Kestrel | E.32801 | E.39728 | 3760 | 4060 | 1.08 X |
| Goshawk | Des.1734 | Des.1545 | 3900 | 4400 | 1.13 X |
| Goshawk | Des.1739 | Des.1545 | 3400 | 4050 | 1.20 X |
| 'R' Engine | | LOP. E.33672 | 3600 | 3740 | 1.04 |

X = Rig Tests.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙