Popular science monthly . milar cases where it is difficult to startthe car for lack of tractive power on onewheel. How to Make a PendulumSwing Easily THE uneven swinging of clock pendu-lums is generally due, not to incorrectbalancing of the pendiihnn weight, but to atin>- kink in the feather-spring from whichthe pendulum is suspeniled. If the laceof the clock is taken olT. the feather-sjiringmay be twisted slightly in the right direc-tion with a pair of tweezers or small]iincers. This will correct the unsightlywobble and help to maintain the perfectbalance.— W. TiLLOTSON. Lifted Tre
Popular science monthly . milar cases where it is difficult to startthe car for lack of tractive power on onewheel. How to Make a PendulumSwing Easily THE uneven swinging of clock pendu-lums is generally due, not to incorrectbalancing of the pendiihnn weight, but to atin>- kink in the feather-spring from whichthe pendulum is suspeniled. If the laceof the clock is taken olT. the feather-sjiringmay be twisted slightly in the right direc-tion with a pair of tweezers or small]iincers. This will correct the unsightlywobble and help to maintain the perfectbalance.— W. TiLLOTSON. Lifted Tread Sections in MakingAutomobile Tire Repairs Ml (11 been said about the liftedtread method of making a sectionallire rei>air, but man>- Nulcanizcrs are stillfollowing the wasteful practice of cuttingolT the old rubber and throwing it awa\.(lit across the tread well to one side ofthe injury and iicel it back. .After llicsection has been built in, cement the (1 l,i\ il k in place. A Moto^pycle Bob. VredericB. Hart Convert Your Motorcycle intoan Inexpensive Power Bobsled IX designing this motor-bob it is assumedthat the building will be done by motor-cycle owners having limited facilities,therefore everything is made in the simplestform, of materials casiK- obtained. Exceptthe woodwork, nothing is required beyondsome pieces of i-in. gas-pipe, a small pieceof boiler-plate for the kingbolt support,some 3^-8-in. outside diameter brass tubingand steel wire for the ignition and throttlecontrols, and some ^ g-m- rod and heavystrap-iron for the clutch-control and gear-shift. Many dimensions will have to bevaried to conform with the motorcycleused for the power plant, so only generaldimensions that are applicable to any ma-chine are given, and c\en these may bechanged to meet the requirements of thebuilder. Only a general outline is suggested for atwo-passenger seat and a hood for themotorcycle. If such a hood is used itshould be open in front or covered with aw
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
