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).
Modifications to the Goshawk crankcase bolting at the rear end.
| Identifier | WestWitteringFiles\I\June1922\ Scan91 | |
| Date | 23th June 1922 | |
| To By.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c.c. to CJ. Wor.{Arthur Wormald - General Works Manager} c.c. to Hs.{Lord Ernest Hives - Chair} Bv. GOSHAWK - CRANKCASE BOLTING AT REAR END. X4220 We send you herewith drawing No. LeC 1602 shewing the above. You will notice that we have put 2 very long bolts right through the upper and lower halves of the crankcase, at the junction of the side and cross walls. These bolts are .375 in diameter. The two 5/16 bolts which originally did the clamping near this point have been cancelled. The clamping bolts on the sides of the fly wheel casing have been increased in diameter to .375 - one of them has been made a stud so as to be more securely anchored to the casting, instead of as with the present bolt being carried by a shallow overhung boss. The drawing shews a modification that is necessary to the magneto control shaft bracket to allow of the presence of the clamping bolt on the left hand side of the engine. One of the bolts holding on the gearbox to the crankcase has had to be moved out of position also. You will notice finally that the 2 long clamping bolts pass right through the taper sockets for the engine suspension tubes at the rear, and that it will be necessary to mill a-way semi-circular clearance recesses in the said tubes to allow the bolts to pass through. E.{Mr Elliott - Chief Engineer} | ||