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).
Instructions document detailing the failure of the original TG3 coil during testing.
| Identifier | ExFiles\Box 45\4\ Scan149 | |
| Date | 28th February 1923 | |
| ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C Order No: P.B. 82 Customer's No. X4079 Failure of N°1 T.G.3. Coil. This coil is the original T.G.3 coil made by Mr Brock, and upon which several tests have been carried out on the car. It is called number one to distinguish it from two others of its kind which have since been made. The failure occurred whilst putting the coil through a series of tests for the purpose of settling up a specification of test for this type of coil, and is in the form of a high tension breakdown on the secondary winding. It actually broke down on the open circuit test, after it had been cont'd Signed This Sheet must be filed on completion of the work. | ||