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).
Comparison of the Kismet Junior tyre pump and tyre tester against the Nesthill Compact pump and Schrader gauge.
| Identifier | ExFiles\Box 149\5\ scan0134 | |
| Date | 22th April 1931 | |
| 8993. To By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} c. to Roy.{Sir Henry Royce} Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey}16/KT.22.4.31. KISMET JUNIOR TYRE PUMP AND 31. TYRE TESTER. We have carried out tests on the Kismet Junior Tyre pump submitted to us under cover of Roy{Sir Henry Royce}/C7312/EB10.4.31. This pump is in no way superior to our present standard Nesthill Compact Pump. It requires exactly the same number of strokes (viz 750) of each make of pump to inflate a 33 X 6.75 tyre from flat to 50 lbs/sq.in. pressure. The Kismet pump is considerably larger and is therefore more difficult to stow away in a car than the Nesthill. KISMET JUNIOR. NESTHILL COMPACT. Weight. 8 lbs. 7 lbs. Max. closed height. 3.500" 2.750" Max. width. 5.00" 4.0" Max. length. 13.750" 14.0" In view of the above particulars and in addition because the Kismet pump is more expensive than the Nesthill Compact we see no reason for us to interest ourselves further with it. The Kismet 31 Tyre Tester appears to be quite good. Our experience of the Schrader gauges is that they vary considerably from gauge to gauge and cannot in any sense be called an accurate instrument. The Kismet Tyre Tester works on exactly the same principle as the latest Schrader gauge, but is easier to read, cheaper and is British. We cannot say now how reliable it is, but it appears worth while to obtain some more of them for test use, it should not be any less reliable than the Schrader. Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} | ||