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The Porsche-Diesel Standard 218, also known as N 218 is the third generation of the two cylinder Standard tractor model series manufactured by Porsche-Diesel Motorenbau GmbH in Friedrichshafen am Bodensee. The Standard 218 was produced in four different variations. It succeeded its predecessor, the Porsche-Diesel 208 in 1957. From 1957 to 1963 the Porsche plant produced more than 12,000 ''Standard 218'' tractors.〔 == Characteristics == The tractor is built using a frameless block construction. The rear axle is a portal axle, the front axle is a swing axle. The wheelbase is 1668 mm.〔 The track of the front wheels can be increased by turning the rims on the vertical axis.〔 The internal expanding brake brakes the back wheels only. It can also act as a steering brake.〔 The steering gear and the gearbox were produced by ZF Friedrichshafen.〔 All Porsche-Diesel 218 tractors have a six gear gearbox with a crawler gear.〔 The clutch is the single-disk dry clutch K 200 Z by Fichtel & Sachs. It operates with an oil hydraulic clutch by Voith. The exception is the Standard V 218, which has a five gear gearbox only. It also lacks the oil hydraulic clutch.〔 Porsche-Diesel offered a three-point-linkage as an optional equipment. It can lift up to 550 kg〔 with a torque of 3850 Nm.〔 The second optional equipment is a mowing bar. It was offered for DM500.〔 The weight of the tractor is 1625 kg including the linkage, the mower bar and the extra weights. The maximum weight is 2300kg. The paint is RAL 3002 Karminrot for the body and RAL 1014 or 1015 Elfenbein for the rims.〔 The Standard 218 doesn't have a fuel tap due to tightness problems.〔 Four different variations of the Porsche 218 have been produced: *''H 218'' :The base model: six gear gearbox, oil hydraulic clutch, chrome decoration trim. ''H'' for ''hydraulic'' clutch. *''V 218'' :The simplified model: five gear gearbox, no hydraulic clutch, no trim. ''V'' for ''vereinfacht'' (simplified). *''S 218'' :The narrow gauge model. Like the H 218, but with a track of 840 / 1240 mm and a wheelbase of 1620 mm. ''S'' for ''Schmalspur'' (narrow gauge). *''U 218'' :The shaft switching model. Like the H 218. The extras are a switchable gear shaft and a switchable power take-off shaft. It was offered with a cab and extended front wheel mudgards. ''U'' for ''umschaltbar'' (switchable). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Porsche-Diesel 218」の詳細全文を読む スポンサード リンク
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