ANSWERS TO QUERIES.
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Assistance in Pressing Claims, Can I Get Petrol for Coal Delivery ?
[4402] (Wales).—There is no association membership. of which will give you .the right.to a petrol licence., but the Cammercial Motor Users Association, 83, Pall Mal], London, S.W., will take up the case of any of its members, and by presenting it pro'perly and patting forward additional arguments which the association know to be valid, assist a member to secure a petrol permiagif he,is entitled to one. If you ithink you-have a g'ood case, but that you have . not had a chance of presenting it properly, it might be worth your while to take advantage of the assistance which membership of the above association offers.
Seeking a Fitter's Job.
[4403] (Sutton).—You would' be ill advised to consider taking up a job as a fitter if you have already proved that your health will not allow you to take up munition work. We think .you would be far better advised to take up a position again as a driver of an agricultural motor.
As regards hooka on fitting and turning. As you are probably aware, the claseal work on this subject is "Turning and Mechanical Manipulation," bY.
Charles Holtzapffel. This, however, runs into six volumes, a-mid is a_ fairly expensive publication. We do not know its price, but should anticipate that probably half a .guinea, per volume would meet it. Others are The Principles Of Fitting," by J. C. Horner, 58. ; " Vractical Leaaons in Metal Turning," by Pereeva[ Marshall, 2s. ; -" Serew Threads and Methods of Proclueing Them," by Paul ITasluck, is. Or!.; " Turning for Beginners," by J. Lakin, 1s. .6d. These, all but the Floltzapffel, are ,publisheal by Perceval.Marshall and Co. The Ifoltzapffel. is published by Holtzapffel and Co., 64, Charing Cross Road, London, W.C.
Do the Wheels Come Off the Ground ?
[4404] ("PIunistead).—You ask, taking the Ordinary conditions of live-axle drive, is there any tendency for the front wheels to come off the ground' and so reduce the.. adhesion available for steering. A plain answer toi that query is simply : No f There is no such tendency in actual practice. If, however, the quesa tion is put purely from the theoretical and scientific standpoint, then the answer is exactly the opposite, and perhaps the best way of answering is by taking two simple examples : A motor boat being driven forward with a single propeller turning -clockwise will tend to lift over under the reaction of the engine to the opposite side. An aeroplane drawn through the air by a single tractor screw would, under the reaction of the engine, tend to rotate in the air in the opposite direction to that under which the propeller is rotating. A motor vehicle, therefore, lbeing driven forward by live axle drive Would terig, as the crown wheel is rotated, to climb up the crown wheel through the action of the bevel pinion, so that, if the front of the chassis were infinitely light, the differential would remain still and the chassis would -rotate round ; in ether words, the tendency for the front wheels would be to lift off the around. • [4405] (Gateshead).--Under the new Petrol Reeariction Order' you ought to be able to apply for petrol, as it is put in the Order, for the purpose of driVing a motor vehicle which is constructed or adapted fee use and is used Floiely for the conveyance of any goods or burden in the course of trade or husbandry. You can obtain a forth of application at the post office.
Wages of Drivers.
[4406] (City).—The rate of wage for the driver of a four-ton aletrol lorry is 50s. per week for a 72-hour week of six days, overtime to he paid for at the rate of ad. an hour. This, however, is Subject to two recent awards, in which a driver may Oahu £1 55. a week more than was customary io the district before the war. He should receive payment for overtime in prdportion to the rate as it .stands when increased to the extent of 25s. a week. If arrangeinents have been made,to pay the man a wage which is already more than 2§s: a week over and above what he was receiving -before the war, ad employer may not reduce that war.
_Lubrication Trouble on d. Converted Ford.
[4407] (I-Twist Hill).—The source of the trouble with the .lubrication on your Ford is rather clearly indicated by your own wards,," We have been carefulto note that oil is only just -spouting from top tap." The oil level has been carried far too high, the engine having long since been thoroughly well run in. The level should only be as high as that when the engine is new, and while it is being run in by the first 500 to 1000 miles driving. After that, the oil level Should be near, that of the bottom eock—alightly above it.
The best way is to open the bottom cock at night (after the day's work is done, and while the oil is still warm), and let it drip all nigklt (Preferably into Some receptacle, to save the floor !),. to close it in the morning, and pour in„ via the breather pipe, from pint to 1 pint of new oil. The supply should then be good for, at all events, 50, if not 75 miles. Test (by Opening bottom cock) after 50 miles, when, if there is no drip, pour in a little more Oil till the drip comes.
A little-experience and observatieri will show how much oil ahould be poured ia each morning, after the all-night .draining. 'If one pint has 'been poured in at the morning 'start, and aacopious quantity pours out during the following night's draining, it is clear that the oiling has been excessive, and the daily supply should be reduced. If only a little (less than -I pint, say) drips out during the night, the oiling has been about right. No hard-and-fast rule can be laid down, much depending upon mileage, load and con
tour of country travelled. , • .
The principle is to keep the level at all times just above the lowet cock, and neither to swamp the sump nor to starve it. As y:ou cannot keep the level iust there, you must legislate so that it is never lower than the bottom cock after any mileage.