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).
Brake drum contraction, cooling efficiency, and potential improvements using Ferodo material.
| Identifier | ExFiles\Box 26\4\ Scan014 | |
| Date | 12th May 1914 | |
| A.{Mr Adams} 235A. (150 H) (W.W. 276. 12-5-14) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0547. Wor{Arthur Wormald - General Works Manager}/HyS/BLC714. 2. The drums quickly contract however on releasing the brake and after running about a mile the clearance is normal again. I am now anxious to try the air cooled drums which I requested a week ago. If these drums are efficient as regards cooling the Ferodo should make a good brake. I would like the Ferodo to be pressed much harder than at present. This may entail making smaller sections but there is no objection to this. I think broader brakes would give better results with this material as it is inclined to spread slightly. | ||