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A single-speed bicycle is a type of ... Using chain tugs with track ends ensures that optimum chain tension can be achieved with the wheel remaining centered ...
Tensioning can be implemented in all the same ways that single-speed chain drives can be tensioned. The fork ends for the rear axle are horizontal, in line with the belt, with or without chain tugs, which allows the distance between the rear wheel axle and the crank axle to be adjusted. The fork ends themselves can be moved, to change the ...
Chain boat tow on the Main (ca. 1896) Chain boat of the Mainkette-AG in front of the "Mainkai" in Frankfurt After navigation on the Main had lost more and more of its transport capacity to the railway and the use of wheeled steam tugs had failed due to the shallow navigation channel of the Main, Heino Held, owner of the Mainz-based forwarding and coal trading company C.J.H. Held & Cie., had ...
Chain boats revolutionized inland waterway transport, especially on rivers with strong currents. Compared with the hitherto standard towing method, a chain boat could haul many more and much larger barges. The possible load of a single barge rose five times in just a few years. In addition, the chain boat transport was much faster and cheaper.
Royal Navy World War II motor torpedo boat (MTB) planing at speed on calm water showing its hard-chine hull. Note how most of the bow of the boat is out of the water.. The scow in particular, in the form of the scow schooner, was the first significant example of a hard-chine sailing vessel.
The chain had to be replaced every 10 to 15 years, depending on the flow conditions of the river. [3] In the area of strong river bends, the chain will be pulled slightly towards the inside of the bend during towing. However, the downhill tug can correct the position of the chain in the river bed. [5] Drawing of a chain steamer from the Neckar ...
USCGC Tupelo WAGL/WLB-303, was a Cactus (A) Class 180-foot buoy tender vessel built by Zenith Dredge Company of Duluth, Minnesota.Her keel was laid 15 August 1942, launched 28 November 1942 and commissioned on 30 August 1943.
The majority of the world's cable ferries are indeed manually propelled either with a crank turning a chain wheel or by pulling directly on a cable. For example, the Saugatuck Chain Ferry taking up to 24 passengers is cranked by a single person at about 0.3 m/s.