. Automotive industries . and F-20 for the front. Theyare similar in most respectsto the smaller models R andF-15. The housing, housingspiders and hubs are madefrom electric steel worm and worm wheelare of generous ratios of , are standard formodel R-20. The differentials are of thebevel type and the side gearsare splined to receive theends of the axle shaft. Thepinion, spider and side gearsare all made from alloy steel,hardened and ground, for thebearings and splined fits. Nobushings are used. The axleshaft, brake cams, brake sup-ports and ot
. Automotive industries . and F-20 for the front. Theyare similar in most respectsto the smaller models R andF-15. The housing, housingspiders and hubs are madefrom electric steel worm and worm wheelare of generous ratios of , are standard formodel R-20. The differentials are of thebevel type and the side gearsare splined to receive theends of the axle shaft. Thepinion, spider and side gearsare all made from alloy steel,hardened and ground, for thebearings and splined fits. Nobushings are used. The axleshaft, brake cams, brake sup-ports and other importantparts subject to stress aremade from electric furnace,chrome molybdenum steel,heat treated and ground tosize. Concentricity of the drum is secured by grinding on the inside braking surfaceand at the same time, grinding the center hole to size. Thebrakes are dual, internal expanding, of the wrap-up brake has an expanding and centering member, thelining and brake bands being separate pieces. With this. The Dunkirk model F-20 front axle for trucks feature it is possible to remove the brake lining rapidly forrelining purposes without the use of wrenches, tools, etc.,and also without the necessity for removing the entirebrake shoe. The brake levers are forg-ings from high carbon steeland are splined, giving an ad-justment of about 6 deg. Onthe R-20 the levers are 8y2in. long. The axle is pro-vided only for Hotchkissdrive and the spring pads foi2*/2 in. springs. A feature axle, however, is the pro-vision for adjustment of thecenter distances by slidingthe spring pads along theseat provided for the pur-pose. The rear axles are of thesemi-floating type and areball bearings of all the movingparts is automatic from thesplash within the housing,the wheel bearings are alsolubricated from the samesource. The brake cams andbearings are lubricated bywick feed and need attentionbut once a season. Anotherfeature of the axle is the oil retaining pac
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
