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).
Letter detailing modifications and additions to the J.3. crankcase.
| Identifier | ExFiles\Box 179\1\ img026 | |
| Date | 15th October 1931 | |
| FROM E.{Mr Elliott - Chief Engineer} C. to S. W.H. MS. EA/15.10.31. J.{Mr Johnson W.M.} 3. CRANKCASE DETAILS. X5009 We send you herewith LeC. 2964. showing some modifications and additions which it has been considered advisable to make. We would draw attention to the ribs added for stiffening the joint under the wet liner flange and the modification to the water hole connections to the head. The slight changes made to the cored pockets for feeding the side water holes should also be noted. This drawing shews in addition the portways through the transverse webs for longitudinal passage of the cooling water along the block, and a drain boss at the lowest point of the cylinder. This latter is not intended for normal use as we consider the .7" of water not dealt with through the pump is not likely to cause trouble. E.{Mr Elliott - Chief Engineer} | ||