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).
Scheme for four balance weights for the Phantom engine, comparing two-stud and single-stud designs.
| Identifier | ExFiles\Box 14\2\ Scan097 | |
| Date | 16th February 1931 | |
| R.{Sir Henry Royce} FROM E.{Mr Elliott - Chief Engineer} C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} C. to HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} X7010 E3/M16.2.31. P. 2. BALANCE WEIGHTS. Please find herewith LeC. 3874. shewing the scheme for four balance weights for the Phantom. We have shewn the balance weight held on with two studs as you request for a permanent modification, but to enable HS.{Lord Ernest Hives - Chair} to make a preliminary trial on an existing engine a single stud scheme is also shewn to suit existing crank webs. We think the two stud scheme will require some means of locking the studs in the crank and it looks as if these will have to be pinned as shewn in pencil unless we can find a more economical scheme which we will endeavour to do. E.{Mr Elliott - Chief Engineer} | ||