MODERN CARBURETTOR DEVELOPMENT

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The latest mod.0 of this make is the U type, which incorporates many ingenious and desirable features. Great care has been taken in the streamlining of the interior passages, while accessibility has been studied and the whole instrument can be dismantled for inspection or cleaning in a matter of seconds without tools.

A compensator jet with special atomising device ensures full vapourisation of the fuel while the extra supply of fuel for instant acceleration is supplied from a well round the jet.

The downdraft model of this instrument should be of special interest to sports car owners as this type has now been adopted as standard equipment on Talbot cars, whose performance speaks for itself.

The R.A.G.

fore as a result of experience ,on racing cars of various makes. It is an instrument of normal design in many ways but with several ingenious details. For instance, instead of the normal needle valve a hardened ball is used and complete immunity from leakage is claimed as a result.

The very important feature of accessibility has been well dealt with, and the main jet requires no special keys for its removal, and the job can easily be done in the dark. There is a special mixture regulating ball valve which is easily adjusted, and

entirely automatic in action. A novel filter, which is praccically self clearing, is fitted. Acceleration is catered for by a reserve supply in a special tube which is delivered on opening the throttle, while the mechanical details of the whole instrument are extremely robust, and it is characterised by a very desirable simplicity. Experience of this instrument has shown that smoothness and good pulling at low speeds are combined with really remarkable

acceleration, which make it Very suitable for sports car use.

The Mex.

The outstanding feature of this make has always been a remarkable simplicity in design and construction which makes it one of the easiest instruments to tune of any on the market. The latest type incorporates the usual features of simple main and pilot jet, with a special connection between the two ensuring absence of fiat-spots, but has in addition a special arrangement giving good starting from cold.

This consists of an auxiliary carburettor in, the main instrument, avoiding the use of a strangler, and automatically ensuring good pick-up irrespective of engine temperature. Both economy and acceleration have always been excellent with this make.

The A mal.

This instrument is of special interest in being the result of the combining forces of Amac, Binks, and Brown and Barlow, names well known to all old time motorcyclists. When, a few years ago these three firms amalgamated under the auspices of Imperial Chemical Industries Ltd., the experience of all three firms was utilised in the production of the very successful instrument which is used today on nearly all motorcycles and by an increasing number of car firms.