NEW MODELS AT OLYMPIA, The manufacturers have gauged the public
demand for 1928 to be for light six-Cylinder models, and -there must be at least a roundzdozen which are making their debut at Olympia. There are also a few straight-eights making their first appear- ance. Some moderately priced engines are fitted with super- chargers, while a number of sports models with speed guarantees attached are also being shown. There have been recent improvements in design which have " conduced to increasing engine efficiency, higher compression ratios and a general advance in carburation and induction. Among the advantages gained is economy in petrol consumption, and to this end, and for generally improved running, devices for controlling the temperature of the engine are almost universal. Overhead valves still predominate, but side-by-side valves are regaining much of the favour they recently lost.
An innovation from the United States is the use of air and oil purifiers. Various types of vacuum and hydraulic braking systems are shown.
Engine design generally is clean, and the various components Which require attention are accessible. There is still room for improvement in this respect, and often it is quite a job to unearth the battery, which after all should be particularly
accessible as it requires frequent care and attention. It
would be a great convenience if there were fewer different sizes of nuts used on a .cllassis No two nuts seem to be the same size at prompt, and the spanner one has in one's hand is always just wrong‘
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