A true antique (Latin antiquus; old, ancient) is an item perceived as having value because of its aesthetic or historical significance, and often defined as at least 100 years old (or some other limit), although the term is often used loosely to describe any object that is old. An antique is usually an item that is collected or desirable because of its age, beauty, rarity, condition ...A straighttwin engine, also known as an inlinetwin, verticaltwin, or paralleltwin is a twocylinder piston engine where two cylinders are arranged in a line along a common crankshaft.. Straighttwin engines are primarily used in motorcycles; other uses include automobiles, marine vessels, snowmobiles, jetskis, allterrain vehicles, tractors and ultralight aircraft.
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