MOTOR-CYCLING.

New Zealand Herald, Volume LXV, Issue 20028, 18 August 1928, Page 12 (Supplement)

MOTOR-CYCLING.

THE SPORTS CLUB,. The fixture of the Sports Motor-Cycle Club for this week-end is a whitewash trail. The course will be known only to those laying the trail, and, although no special prize has been alotted, the winning members will gain points, which will count for the Club Trophy at the end of tho season. Next week an averagespeed judging trial will be held over the Kumeu circuit. THE DUTCH T.T. The Dutch Tourist Trophy races run last month in Northern Holland have resulted in a triumph for British manufacturers in all classes. The placings wero: —175 c.c. event, Excelsior (British), 1; D.W.K. (German), 2; D.W.K., 3. 250 c.c. event, Excelsior (British), 1; D.W.K. (German), 2; O.K. Supreme British 3. 350 c.c. event, Norton (British), 1; Motosacocbe (Swiss); 2; Zenith (British). 3. 500 c.c. event, Rudge Whitworth (British), 1; A.J.S. (British), 2; Sarolea (Belgium), 3. An interesting feature was the victory of the new 2§ h.p. Norton in the 350 c.c. class. COOL ENGINES. A cool-running engine acquires carbon deposit in the form of a soft, powdery, dull black material which consists, for the most part, of pure soot. The carbon deposited in hot-running engines, however, takes on itself a different form. In these cases the carbon deposit is -hard, and of the new 2|- h.p. Norton in the 350 c.c. Further, it very often has to be removed in small hunks.' Carbon deposit of tho hard type is derived chiefly from the decomposition of the lubricating oil or of its vapour. It is not a pure form of carbon, for it contains a certain proportion of hard, tarry matters derived from the partially burned oil. HONOURS FOR NEW ZEALAND. The Auckland Motor Racing Club has received advice that the one-mile records established at the March meeting at Takapuna have been accepted overseas as official world records for grass track speeds. Certificates to this effect have been issued to P. Coleman 7 h.p. HarleyDavidson), 46 4-55., and C. Walker (2§ h.p. Rex-Acme), 50 4-ss. NOTES. A Sunbeam, ridden by an Italian, has won the Italian T.T. Race, the Circuito del Lario.

Valves and valve gear were responsible | for more failures in the recent T.T. races than any other mechanism. The smoke concert of the North Shore Sports Motor-Cycle Club, which was fixed for to-night, has been postponed. From January to December, 1927, 92 per cent, of the motor-cycles imported into East Africa were of British manufacture. The reliability of the small two-stroke in the recent T.T. races is to lead to the mass-production of three-wheeled delivery " forecars" using this type of unit. The Indian, Harley-Davidson, Ace, Excelsior, Henderson and Cleveland combined output for 1927 was 35,000 motor-cycles. This figure is expected to be exceeded by 5000 iu 1928.; To prevent acid from attacking the terminals and wire, shape a piece of cardboard round the terminal and cable end and pour paraffin wax into this former until the terminal is covered. The cardboard can be removed after the wax has hardened. In the 200 miles Brooklands Races high speeds were established in the 350 c.c. and 500 c. c. classes, the winners being W. H. Phillips Grindlay Peerless), 86.6 m.p.h., and H. Le Vack (New Hudson), 94.8 m.p.h. respectively. A new scale of motor taxes is in operation in South Australia, under which motor-cycles formerly taxed on a powerweight basis are now subject to a flatrate tax of 30s per year for solo machines and £2 for sidecar outfits.

The Auckland City Council is purchasing three motor-cycles for the use of its traffic staff. Following the load given by the A.A.A., ifc is calling tenders for British machines, ono condition being that the three machines at present owned by the council be taken as part payment.

The Auckland Automobile"'Association at its last monthly meeting decided to donate £5 toward the Sports Motor-Cycle Club fund to contest the pillion-riding by-law in the Supreme Court. The A.A.A. holds that a national regulation should over-rule a by-law, and on these grounds is supporting the Sports Club in its move.