RUBBER FOR ONE CAR

Hawera Star, Volume LIII, 30 September 1933, Page 12

RUBBER FOR ONE CAR

INCREASING USE FOR PARTS OUTPUT OF MORE THAN 30 TREES With the increasing use of rubber parts in car manufacturing the yearly output of from 30 to 40 rubber trees is required to supply 7 tyres, tubes, and parts for each modern car. In 1925 the average car used about three pounds of rubber parts in acldi-

! lion to the rubber in tyres and. tubes, : while 1933 models carry from 30 to 60 )b of rubber parts, according to research engineers of the Goodyear Tyre, and Rubber Co. More than 90 per cent, of modern cars use at least 30 to 401 b of rubber made up into 11 or 12 classes of parts, ranging from spark plug caps and door bumpers to torque spring insulators and engine mountings. The improvement m engines and. fuels, together with the introduction of new silent running tyres making for extremely quiet operation, have necessitated the use of rubber insulation to reduce body noises formerly drowned out by the engine and tyres. Rubber, insulation is also important in breaking up the synchronisation of vibrations and noises between the engine and body, caused by high speed performance and the use of all steel bodies. COMMON USES. Prominent among the uses for rubber in automobiles other than in tyres and tubes are floor mats, fan belts, spring bumpers, window channels, body shims and hydraulic brake hose. Unlimited possibilities for additional rubber parts in the automotive field are seen by the engineers. In a few j years, they believe, more and more • rubber will be used in body and fender I construction. It is quite possible that there will be more replacing of solid ! steel parts with rubber, perhaps replacing the car’s entire spring mechanism with rubber.