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).
Magneto drive slip and camshaft drive failure, including proposed solutions.
| Identifier | WestWitteringFiles\P\2October1926-December1926\ Scan016 | |
| Date | 16th October 1926 | |
| J.{Mr Johnson W.M.} R2/M16.10.26. X8070 X8090 X8100 ORIGINAL TO HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} C.c. to BJ. RG.{Mr Rowledge} BY.{R.W. Bailey - Chief Engineer} (text is struck through) MAGNETO DRIVE SLIP & CAMSHAFT DRIVE FAILURE. The camshaft drive we have decided to make solid. The magneto drive coupling should be tested for holding powers, and if any advantage can be gained by additional plates. We believe however that both troubles have been caused by errors in setting up the spring drive. It would appear that the friction damper should have clearance in disc 'C' shewn on LeC. 2184. of at least .1" on each side of the pin. Furthermore we are doubtful whether the damping springs are producing the best friction upon the damper. If on inspection the spring drive is found to have insufficient torsional clearance the holes should be elongated. If on the other hand the spring drive is found to be correct and with sufficient clearance, then the shaft should be smaller in dia. We suggest grinding this shaft down from .375 to .3. R.{Sir Henry Royce} | ||