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).
Setting up and fitting a carburetter.
| Identifier | ExFiles\Box 66a\1\ scan0031 | |
| Date | 1st January 1925 | |
| R.R. 493A (50R) (D.B. 175 25-9-24) J.H.D. SECRET. Expl. No. REF: Hs{Lord Ernest Hives - Chair}/ACL/1029.1.25 EXPERIMENTAL REPORT. Ex. A.{Mr Adams} G.{Mr Griffiths - Chief Accountant / Mr Gnapp} SETTING UP AND FITTING OF CARBURETTER. See Arrt. Doc. E.72226. FLOAT CHAMBER UNITS :- Needle and collar. The float needle and collar should be checked for length from under the collar to the tip of the needle. See drawing E.70412/3. The conical face of the needle should be examined to see that it is not rough or ringed. Valve Seating. The needle seat should be examined to see that it is smooth and free from rings. The valve seating has a metal face joint and it should be seen that this is screwed home correctly into the float chamber so that it does not allow petrol to leak passed the joint. It should not have any burrs round the petrol feed holes which would be likely to impair the petrol flow or the correct functioning of the needle valve. Float chamber cover and float weights. These should be within the limits given on E.70341, E.70375 and E.22124. The float weights pins are locked in position by a piece of No.19 S.W.G. copper wire. When assembled, the needle valve should work quite freely - on no account should there be any tendency for the collar to bind with the float weights. The distance between the top of the valve seat and the top of the float chamber should be checked. It should be from 3.120 to 3.085". On no account should a washer be placed under the contd : | ||