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).
Table detailing exhaust system tests, comparing power output (B.HP) and power loss for various systems relative to a standard system.

Identifier  ExFiles\Box 38\4\  Scan066
Date  5th April 1924 guessed
  
(2)

EXHAUST SYSTEM TESTS -

POWER OUTPUT OF STD. SYSTEM AND LOSS IN B.H.P. OF THE OTHER SYSTEMS RELATIVE TO STANDARD SYSTEM.

| R.P.M. | B.H.P. with std. exh. system. | Loss in B.H.P. relative to std. system. |
|---|---|---|
| | closed. | open | West WitteringHenry Royce's home town 2 1/4" dia. down pipe | West WitteringHenry Royce's home town 2" dia. down pipe. | Derby exhaust scheme. | Closed and open refer to the cut-out. |
| | | | closed. | open. | closed. | open. | closed. | open. |
| 1000 | 48.8 | 50.6 | --- | 0.3 | --- | .9 | 0.6 | 0.7 |
| 1250 | 60.0 | 62.3 | .6 | 1.1 | .6 | .9 | 0.5 | 0.6 |
| 1500 | 68.8 | 72.5 | 1.2 | 1.8 | 1.2 | 1.8 | 0.7 | 0.9 |
| 1750 | 74.4 | 80.3 | 1.4 | 2.8 | 1.4 | 2.0 | 1.0 | 1.6 |
| 2000 | 78.25 | 85.7 | 1.7 | 3.3 | 1.25 | 2.0 | 1.1 | 1.5 |
| 2250 | 78.8 | 87.2 | 1.4 | 3.2 | 0.5 | 2.2 | 1.5 | 1.4 |
  
  


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