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 made to the Goshawk clutch mechanism to reduce cost and pedal load.
| Identifier | WestWitteringFiles\I\July1922\ Scan40 | |
| Date | 19th July 1922 | |
| To By.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} c. to Cdr.{W. J. Chandler - Chief Clerk} Wor.{Arthur Wormald - General Works Manager} c. to Hs.{Lord Ernest Hives - Chair} Bp. FC ORIGINAL RECEIVED JUL 21 1922 R8/119.7.22. GOSHAWK CLUTCH. X4244 Referring to section 8 of R2/M15.7.22., dealing with the above unit, we now send herewith drawing No. LeC 1607 - improvements in Goshawk clutch mechanism - in which we have shewn modifications that should reduce the cost, and also the pedal load required for declutching. We have stiffened up the levers in the clutch it-self making the deflection less than half that obtaining previously, also considerably increased the stiffness of the operating shaft by now making it's outside dia. 1", and thickness .125". To allow ample clearance for revolving parts on clutch and at the same time incorporation of the simplified withdrawing mechanism shewn on LeC 1489, it has been necess-ary to lower and move to the rear the clutch operating shaft. This shaft is now located longitudinally by the right hand bush between the pinned on collar and outside lever. It is intended that the pinned on collar be fixed in position on the bench, the Woodruff keys being afterwards seated in pos-ition to form a unit which can be easily assembled into posi-tion, the split taper pins used previously having given place to the keys. On the pedal shaft distance piece F50087 has been eliminated altogether, and the length of pedal lever boss slightly decreased. This allows shortening of clutch shaft by .325". (1) | ||