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).
With sketches discussing designs for crankshaft balance weights and stud fixings.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan034 | |
| Date | 11th March 1931 | |
| BY.{R.W. Bailey - Chief Engineer} FROM R.{Sir Henry Royce} HS.{Lord Ernest Hives - Chair} ) (At Le CanadelHenry Royce's French residence.) ORIGINAL. R1/M11.3.31. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} P. 2. BALANCE WEIGHTS - LeC. 2874. X7 O/D.{John DeLooze - Company Secretary} I do not like the temporary single stud job because it looks like weakening a crankshaft (ultimately scrapping) but if it is the best we can do we must accept it. DOUBLE STUD PERMANENT TYPE. One would not expect that it was necessary to pin the studs as you are not using split pins but plate washer lock, but we shall soon know if the balance weights are possible and worth the trouble. We think they must be if the master period permits. Several other schemes have occurred to me, such as: Serrations, or a single one, or circular. Many engineers like short bushes on the studs for locating. Either one on each stud or central independent short dowel very tight on outside diameter. Suppose solidly forged with crankshaft not possible because of boring pins, but central ones could be. Master period may try to pull endways at balance weight: suggests double tight collars best. R.{Sir Henry Royce} | ||