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).
Test report on a modified S.S. starter motor pinion, concluding no improvement over the standard design.
| Identifier | ExFiles\Box 64\4\ scan0246 | |
| Date | 19th April 1929 | |
| RR 23B (150 BKS.) (DB{Donald Bastow - Suspensions} 481-8-12-24) MP 306975 X7655 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.7.C. Order No.: WD{Mr Wood/Mr Whitehead}56 Customer's No.: X-7625 19-4-1929 S.S. starter motor pinion We have tested on our bench rig, the completely rounded off pinion by trying a considerable number of engagements at different voltages. No improvement was noted over the standard arrangement viz sharp engaging rounded disengaging and backed off teeth pinion. Jamming on engagement was just as frequent and at low voltages more frequent. Signed: H.E.W. This Sheet must be filed on completion of the work. | ||