![]() ![]() (This is on a rigid frame - on a swing arm you weld them to the 'side plates'.) When the two pieces that make up the wishbone tubes are welded together they are shaped like a wishbone. They get welded together and then to the top tube at one end and the bottom rails. These two tubes are bent to make space for the seat. The Wishbone Tubes that run along the top and the back of the bike.Recently, Royal Enfield has adopted this frame for its popular product – The Continental GT.The parts made of tubing that make up the special shape of each bike are: In fact many hybrid custom motorcycles like TriTon, NorBsa, NorVin etc., were made using Norton’s frame. The featherbed frame became a standard for Norton’s production motorcycles and has been widely implemented by many motorcycle manufacturers. It delivers excellent manoeuvrability, especially during cornering at high speeds. The featherbed frame is extremely stiff and provides excellent resistance to the stress developed due to road conditions, direct load and torque developed by the engine. The patent claims a frame for a motorcycle comprising two parallel rectangular loops each formed from a single length of tubing, the ends of the tube which forms each loop crossing and being welded to each other at the top front corner of the loop and the free ends of the tube which extend beyond the crossing point being welded to an inclined head tube adjacent to the top and bottom thereof respectively. The Patent GB664667 A entitled, A new or improved frame for a motorcycle, discloses the features of the featherbed frame. He declared that it was like, “riding on a featherbed” when compared with riding the “garden gate” frame. Harold Daniell (an elite Isle of Man TT racer who won several trophies during his era) after trying out the new frame developed by Rex. The term Featherbed Frame was coined by Mr. Rex developed the Featherbed Frame for the Norton Motorcycle Company, primarily for improving performance of their racing motorcycles for the Isle of Man TT, as several of Norton’s Garden Gate frame buckled under the extreme stress of racing. Richard McCandless aka Rex, in the year 1949 for UK based Norton Motorcycle Company. The Featherbed Frame is a type of full duplex cradle or double down-tube frame, and was invented by Mr. ![]() There are different types of motorcycle frames such as single cradle, half duplex cradle, full duplex cradle, perimeter, beam, trellis etc., Though single cradle or single down-tube cradle frame is the simple and most commonly found frame on motorcycles, it is quite inferior to its counterpart in terms of handling. It is like a skeleton that defines the shape of the vehicle and holds all the associated components of the vehicle together. The chassis or the frame is part of a vehicle that is of paramount importance. This post was first published on 16th October, 2014. ![]()
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