CARS NOW LAST LONGER

Sun (Auckland), Volume II, Issue 534, 11 December 1928, Page 7

CARS NOW LAST LONGER

DECREASED ENGINE VIBRATION The smooth action and long, useful life of the modern automobile is due in no small part to the war that has been waged against vibration by the car manufacturers. Although it is impossible to eliminate this destructive agency entirely, lt« damaging effects have been greatly minimised by improvements in design and construction. Crankshafts have been made stiffep and mounted more rigidly in their bearings. As an additional step, th® use of a greater number of bearings holding the shaft at more points has been found effective. Reciprocating parts have been made lighter and sets of connecting rods and pistons more carefully balanced. Combustion chambers have been mad© uniform in size to equalise explosion forces. Closer fitting of bearings and pistons has taken up the play that results in premature wear. Engines have been more securely mounted, frames made stiffer and reinforced to withstand the twisting strains set up by the forces acting on the crankshaft. Valves, camshafts, and gears have come in for their share of consideration. More careful design of cams and gear teeth have made these parts function more smoothly.