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 from Joseph Lucas Limited discussing issues with lamp reflectors and dipper units.
| Identifier | ExFiles\Box 167\1\ img160 | |
| Date | 14th July 1937 | |
| HEAD OFFICES & WORKS: GREAT KING ST.{Capt. P. R. Strong}, BIRMINGHAM. CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, AIR MINISTRY, INDIA OFFICE, G.P.O. AND LEADING RAILWAYS 6116 JOSEPH LUCAS LIMITED GREAT KING STREET BIRMINGHAM 19 TELEPHONE: NORTHERN 5201 (12 LINES) TELEGRAMS & CABLES: "LUCAS, BIRMINGHAM" 14th July, 1937. "KING OF THE ROAD" LAMPS, HORNS, "CYCLEALITIES" MOTOR-CYCLEALITIES "MAGNALITIES" IGNITION, BATTERIES ELECTRIC LIGHTING & STARTING SYSTEMS Codes: A.B.C. 5th & 6th EDITn & BENTLEY'S 1st & 2nd SERVICE DEPOTS BELFAST 3/5, CALVIN STREET & 2, LITTLE PATRICK ST BIRMINGHAM, 18 GREAT HAMPTON STREET BRIGHTON, 4 85, OLD SHOREHAM RD, HOVE BRISTOL 345, BATH ROAD CARDIFF 54A, PENARTH ROAD COVENTRY PRIORY STREET DUBLIN PORTLAND STREET, NORTH NORTH CIRCULAR ROAD EDINBURGH, 11 60, STEVENSON RD, GORGIE GLASGOW 22/22A, ST GEORGE'S ROAD LEEDS 64, ROSEVILLE ROAD SERVICE DEPOTS LIVERPOOL, 13 450/456, EDGE LANE LONDON DORNRIDGE ROAD, ACTON VALE, W.3. LONDON 757/759, HIGH ROAD, LEYTON, E.10 LONDON 319, REGENT ST.{Capt. P. R. Strong}, W.1. (SHOWROOMS & OFFICES) LONDON 155, MERTON ROAD, WANDSWORTH, S.W.18. MANCHESTER, 3 291/293, DEANSGATE. (DEPOT & SHOWROOM) MANCHESTER TALBOT RD, STRETFORD NEWCASTLE-ON-TYNE, 2 64/66, ST MARY'S PLACE. WHEN REPLYING PLEASE REFER TO Messrs. Rolls Royce Limited, DERBY. RLN/IB. For the attention of Mr. H.{Arthur M. Hanbury - Head Complaints} E.{Mr Elliott - Chief Engineer} West. Dear Sirs, In reply to your letter of July 13th we would say that the pair of lamps to which you refer were fitted with the more powerful Dipper unit and stronger reflector return spring. Actually in this case a force of 20 ozs. was necessary to move the reflector from its stop as compared with 16 ozs on your original samples. Although we had hoped that this increase would be sufficient to meet your requirements, - we explained to your Mr Waller, when he took delivery of the lamps, that we had not had an opportunity of testing them on the road and that if he experienced trouble with the reflectors fluttering it would be of mutual assistance if he would progressively increase the strength of the existing spring by shortening it until the symptoms disappeared. As you well know we are a little limited with the power of the Dipper unit and we thought that the latest model with the conical air gap would be able to operate against a Cont'd... | ||