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).
Points requiring attention for the 4-Speed Goshawk Gearbox model.
| Identifier | ExFiles\Box 6\4\ 04-page015 | |
| Date | 12th March 1924 | |
| To BY.{R.W. Bailey - Chief Engineer} } FROM AJS. HS.{Lord Ernest Hives - Chair} } c. to R.{Sir Henry Royce} c. to CJ. X5310 AJS1/M3.12.24. RE. 4-SPEED SIDE CHANGE SERVO X.5770 DRIVE GOSHAWK GEARBOX. X.5310 X.5370 The following are a few points requiring attention on the model of above brought here yesterday by HS.{Lord Ernest Hives - Chair} Some of them we realise may be partially corrected in the final fitting together. (1) STUDS FOR SLIDER GUIDE FLANGES. We have shewn on LeC.1897. a thickness of metal for these studs to screw into of .350 whereas the casting has .400 only. We consider these studs should have at least .500 of thread in the aluminium, and would rather add .050" to the facing in order to give more casting clearance inside the box than have less than the .500 of thread for these studs. (2) CHANGE SPEED LEVER. (a) Owing to the unplated exposed portion of the reverse catch operating rod near its lower end probably becoming rusty and unsightly, will you please try this rod in nickel silver. (b) The surface of the inner side of gate used as an abutment for the rounded portion of reverse stop was not used as effectively as was intended (see LeC.1914) owing it appeared to the excessive length of the reverse catch operating rod not allowing the reverse catch to be pushed high enough by the spring plunger. We would ask you to particularly note this point on product-ion boxes as otherwise the edge of slot for re-verse stop is likely to get burred up. (c) Will you please arrange to lengthen the press button on top of lever by .125 beyond that shewn on LeC.1914. (d) The gate we note is held on by 2.BA bolts .250 were asked for on LeC.1914 and we do not think this size should be departed from. (3) SPIGOT ROLLER BEARING. In this connection we ask you to try the latest type Hyatt bearing in which the pins holding cage and plates together pass through the rollers, the number of rollers having been considerably increased. Mr. Royce thinks these would be quieter, in addition to having other virtues. contd :- | ||