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).
Proposal for a hydraulic test rig for connecting rods and other components requiring alternate stress testing.
| Identifier | WestWitteringFiles\T\March1929-December1929\ Scan287 | |
| Date | 2nd December 1929 | |
| HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} [Struck through] Copy to SC. [Struck through] Copy to WOR.{Arthur Wormald - General Works Manager} [Struck through] Copy to BY.{R.W. Bailey - Chief Engineer} handwritten: hvr. johnson stamp: ORIGINAL re. CON. ROD & OTHER TESTING. handwritten: 83859 X4486.. 83269.. We handed to you at the meeting in London on Thursday last, the 28th ult., a suggestion for the hydraulic test tackle for con. rods, and other pieces requiring similar alternate stress. One would imagine it could be applied to a model crank of any proportions, or modifications such as lightening. We understand that you have a pump, so that our rough drawing for the pump to give you the hydraulic supply does not need to go any further. We are now making for you a design for the belt driven distributing valves of piston type and reduction valves, so as to give two pressures, and for it to be delivered alternately above and below the piston in the hydraulic cylinder, which we suggest should take place at about 30 complete periods a minute. We have assumed that you will use an inexpensive lubricating oil for this hydraulic system, and arrange to catch all that leaks away. We think it would be better to make the parts a close fit, than to attempt to use leathers and glands. We are however arranging the test cylinder so that hydraulic leathers can be fitted. The leakage area of this part might be so great that it would be difficult to maintain the oil pressure. Theoretically however we have only to supply hydraulic energy to cater for the leakage. R.{Sir Henry Royce} | ||