MOTOR – CYCLING

Star (Christchurch), Volume XLIV, Issue 143, 18 June 1931, Page 15

MOTOR - CYCLING

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"MAGNETO”

(By MAGNETO.) sir <rr wtti,r In spite of the non-recoenitlon of a class for engines of o#er 1000 c.c.. the problem of the big engine is an interesting one. If a supercharger is used, the "thousand” engine becomes tne equivalent of a fifteen hundred, or thereabouts, owing to the increased amount of gas consumed, and as a matter of interest one would like to know which is the more reliable and economical method of using fuel —the packing of more gas into an engine of given capacity by a large and weighty auxiliary item which absorbs quite a lot or engine power, or an Increase of cylinder capacity to the extent of the extra gas used by the supercharged engine. in the present stage development ana other considerations apart, one places more faith in the big engine. « :: T.T. IACZS. South African Sntries. This vear South Africa will be represented at the Isle of Man T.T. races by J. G. Lind and J. Sarkis. Unfortunately Don Hall, who has been very consistent in these races and collected a few replicas since he first went over to represent South Africa, will not be availabSouth Africa has been the most consistent of the overseas territories to be represented at the Isle of Man. Commencing with Percy Flook in 190 S, some twenty South Africans have entered, and nearly all have done well; In fact, several times have they been within measurable distance of winningLast vear Sarkis, followed by Hall, led the light-weight class for three laps, setting up such a pace that their engines crocked up. Hall was also tne first machine home after the first three Rudges in the Junior Race, thus bringing the Visitors’ Cup to South Africa for the second time in succession. Lind also set up a new record by winning a replica in all three races in which he rode, a wonderful performance for a newcomer to the Island. This year Sarkis will be mounted on O.K.’s in all the races he has entered, while Lina will probably be riding his old favourite, the A.J.S., in at least two events. lfoisy When it Is difficult to obtain quiet valve operation owing to the wear which has taken place in the tappet-heads, giving them a concave formation, the best way to overcome the trouble Is to remove the tappet heads and grind them to obtain a level surface. When ground, it will be possible to obtain the correct adjustment, as previously, although the clearance may be set right according to the gauge; it is simply because the gauge rides over the concave formation, leaving a space below, which cannot be accommodated in the normal way of adjusting. 3 3 3 Kotos. The football match between Cheviot and the Pioneer Club will take place next Sunday. The Pioneer team will leave the club rooms at 2.15 p.m. on Saturdaj’. and will arrive at Cheviot :il*out five o’clock. So far as is known, the team will comprise: A. Haden, T. Ball. H. Burrowes. L. E. Evans, A. E. Hawkings and G. A. Hayman. Messrs R. IT. Parker, C. R. Hayward anrl T. R. M’Cleary will accompany the team. j.; j.; The result of the junior T.T. race was no great- surprise. Nortons have been trying bow for many years, and, although comparative newcomers to the junior race, have been concentrating on the nippy 350 c.c. The result of the senior race should be available soon. Very little has been heard of Charlie Blacklock. The latest Information is that he has had one ride, but had the misfortune to. break a chain.

Many consider that the engines used on the speedway are not particularly

fast, even when geared correctly for high speed. Information comes to hand that in England recently a. standard speedway Rudge, with special gearing, attained over ninety miles an hour on the Brooklands track. 3 3 3 The football practice on Saturday wa* a huge success, and all enjoyed themselves. Tire tide was very high on the Pleasant Point Spit, so the riders Adjourned to a paddock kindly lent by Mr A. Buckley. 3 3 SC Canterbury Club. The Canterbury Motor-cycle Club held a successful paperchase during the weekend. The trail started at Church Corner, and finished at Preston's Road, Marshland. Q. Bligh and R. Newton were the hares. The event resulted: L. R. Shields (34 Douglas) 1, L. G. Archer (34 O.K. Supreme) 2, G. Bryenton (3J Ariel) 3.