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to be separated into smaller pieces, usually to facilitate packing and transporting. Couplings can be built into the frame by the frame manufacturer when the frame is made or can be added to a frame after it is finished. A special
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of a single-rider diamond frame. This enables the bicycle to be boxed small enough to avoid the extra fee most airlines charge to check a bicycle as luggage. They can also be installed in
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to 2 inches (16 to 51 mm) to match the frame tubing in which they are installed. They weigh about 8 oz (230 g) per pair, and arc as strong as uncoupled tubing. They use a
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frames. Santana manufactures a "triplet (or quad) that can be transformed into a tandem by simply removing the center section of the frame."
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The couplings are available in stainless steel, cromoly steel, and titanium and in different sizes, from
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of their tandems, they have developed their own oval couplers.
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is available for tightening and loosening the couplings.
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An S and S coupling equipped Burley packed in its cases
120:It takes a few minutes to separate the couplings.
352:Determining the placement of couplings in BikeCAD
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200:: CS1 maint: bot: original URL status unknown (
346:S and S Machine Bicycle Torque Couplings (BTCs)
266:"Stainless Steel "Classic" BTC Specifications"
75:The couplings are usually installed in the
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183:. Archived from the original on 2007-10-20
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241:"Santana When two seats are not enough"
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128:In order to support the ovalized tube
216:"Size regulation for checked baggage"
272:from the original on 11 October 2007
222:from the original on 11 October 2007
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291:"S&S Couplers at Co-Motion"
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344:http://www.sandsmachine.com/
316:"Santana: The Oval Solution"
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350:http://www.bikecad.ca/boxes
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45:Bicycle Torque Coupling
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134:bottom bracket shells
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322:on August 22, 2008
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181:"S and S Machine"
151:Recumbent bicycle
132:uses between the
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318:. Archived from
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293:. Archived from
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243:. Archived from
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43:also known as a
41:S and S Coupling
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247:on May 13, 2008
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161:Touring bicycle
146:Folding bicycle
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95:Characteristics
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26:touring bicycle
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338:External links
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156:Tandem bicycle
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130:Santana Cycles
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55:which enables
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366:Bicycle parts
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297:on 2011-06-15
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20:A BTC in the
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324:. Retrieved
320:the original
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295:the original
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124:Alternatives
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71:Applications
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111:Hirth joint
326:2007-10-19
301:2008-11-16
276:2007-10-19
251:2007-10-19
226:2007-10-19
187:2007-10-19
167:References
113:to resist
89:recumbent
81:down tube
22:down tube
360:Category
270:Archived
220:Archived
196:cite web
140:See also
77:top tube
53:coupling
115:torsion
104:⁄
65:spanner
57:bicycle
85:tandem
60:frames
51:is a
24:of a
202:link
87:and
79:and
49:BTC
47:or
39:An
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