CYCLING.

Temuka Leader, Issue 3744, 25 May 1901, Page 3

CYCLING.

Tho announcement of tho Dunlop Tyro Company’s intention to establish largo rubber mills near Melbourne baa caused a stir throughout the cycle trade, who recognise the big advantage derivable from having tyres and other rubber goods manufactured according to Australian requirements. Vehicle solid rubber tyres is one item that tho big tyro company intends pushing Neglected lubrication, says Mecredy, the “ Irish cyclist,” is a disease many modern cycles are suffering from. He ia of the opinion that riders no longer give proper attention to this important matter The principal reason of this neglect is because tho modern cycle is so well constructed in the bearings that the want of oil is not so apparent as in tho old machines. But it is a gross mistake to think because the bearings do not squeak, or fire, or stick, no injury is happening. Ball bearings absolutely require oil, and, more important, they require good oil of special qualities, [u these bearings there is only one point contact; that is, a point on the surface of the ball is in contact with a point in the bearing cup. Pressure is therefore, greater than in a plain bearing where the weight would bo divided over a greater surface. c h-iy thick oil must ho used, consequently, m ball bearings, so that it may not he squeezed out from between tho bearing points when the pressure is upon them Most of the cheap oils gum or clog, thus interfering with tho free action of the balls ; and any action which causes the balls to boar unduly on any particular part of the cup or cone tends to cause wear at that point If this is allowed to go on the bearing may be mined or some of the halls bo worn flat.