PageF5             June 1936                    NEWNES PRACTICAL MECHANICS                        502
Guide for gear rod.
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Making a Hand Brake
If you are unable to purchase a hand brake you may easily make one as shown in the sketches. Bowden cables are used for the foot brake, the accelerator, and clutch. The gear change, of course, must be a rod, and a guide plate should be attached to the side member as shown in one of the sketches. The. rear suspension springs may conveniently consist of very strong motor-cycle front-fork springs, although Messrs. Herbert Terry & Sons, of Redditch, are supplying special springs for the job. If you are able to pick up a. pair of springs and find them too short for the job you may make use of them as shown in one of the diagrams by fastening a piece of angle-iron to the rear cross-member and anchoring them by means of an eyed extension bolt.
Blueprints for the car are now ready but are limited in number. They cost 10a. 6d. per set of four
sheets, and show the general and detailed arrangement of the parts..
It will be noticed that regarding some of the details the reader win be left to his own devices, since I cannot issue drawings applicable to all of the engines,gearboxes, and other parts which are being used by constors of this car. The general arrangement must, however, be followed; theshapes will remain and details will differ only as to dimensions. In no case should a twin-cylinder engine be used. since these are of greater cubic capacity and will impose strains and stresses for which the ear is not designed.
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Cellulose Spraying
I have mentioned that readers will decide upon their own. There are,  however, the general methods to be employed. I recommend cellulose spraying since no amateur can hope to get a professional finish in any other way. There are several excellent brands of brushing enamel on the market, it is my experience that amateurs will never go to the trouble of preparing  the work ; most of them presume that a coat of paint will hide a rough surface; it will not. It is always wise to rub down the the woodwork, to fill up any depressions, sscratches or defects with a suitable woodfiller such as plastic wood, to give a co priming (which must be of a lighter colour than the final coat), and then to finish either by brushing on enamel or spraying on cellulose. Remember that, as purchased the latter is intended to to he applied by means of a brush and a reasonably satifactory   job can be made in this way. You can obtain for 1s  or so a spray-on gun, by means of which you can obtain quite a professional finish, although the cellulose will need to be thinned with cellulose thinners uaing 50 per cent. of each. These guns have a container at one end in which the thinned cellulose is placed. A pump arrangement   similar
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