EXHAUST GASES.

Hawke's Bay Tribune, Volume XXIV, Issue 234, 15 September 1934, Page 11

EXHAUST GASES.

Avoid resting the left foot, even lightly, on the clutch pedal while driving. This tends to slip the clutch, particularly when passing over uneven or corrugated roads, and wears it out rapidly. Avoid resting the right foot over the brake pedal except immediately before using the brake. Pressure is applied unwittingly at the wrong time, wearing the brake, and causing jerky running at low speeds.

The Austrian Government has decided that a certain minimum quantity ot alcohol must be used annually by mixing it with petrol. This will represent, with the current petrol consumption in that country, about 3 per cent, of alcohol in the petrol, a proportion that is relatively low in comparison with that required in some European countries.

The registration figures in England for May show that the higher-powered cars continue to obtain a larger share of the market. A year ago 8 h.p., 9 h.p. and 10 h.p. cars had oyer 60 per cent, of the market, but this has now been reduced to 55 per cent.

Among recently registered inventions there appear some new and apparently radically changed ideas relating to motor cars. From France comes the news that a new engine design involves no connecting rod, the piston engaging with the crankshaft by means of teeth like a rack and pinion. A carburettor is also quoted without a float, and sliding, instead of hinged, doors for coachwork.

Most car engines now weigh about 101 b. per brake horse-power developed.

For every IOOOFt. increase in altitude above sea level an engine develops about 3 per cent, less horse-power. In a typical six-cylinder car of medium size each stroke of a piston drives the vehicle forward a distance of B|in. The engine completes 3750 revolutions for each mile travelled in top gear, a figure which represents over 11,000 individual explosions.

When two second-hand cars were put tip in separate lots at a recent auction sale at Horley, Surrey, there were no bids. The auctioneer then offered them both together, and the response was a bid of 10/- the pair. There was no advance of 10/-, and the hammer fell.

Garage Man: The trouble is due to a short circuit.

New Owner Will it take long to lengthen it?

Fortune-teller: I see something big coming towards you. You must not try to avoid it. Client: What, and get run over by a lorrv? I’m a traffic policeman.