Clopay Torsion Spring System
The Clopay torsion spring system is also referred to as EZ-set springs because they are installed easier than standard torsion springs. They don't actually need winding bars for their installation but only a drill. The most distinct feature of Clopay torsion springs is their gapped coils. Since the coils must keep their distance, there is also a spacer along the shaft which keeps the spring stretched in full length. In a different case, the spring would bind. This is also the main reason why a standard torsion spring wouldn't be right for doors, which take Clopay springs. If a standard torsion spring would be stretched so that its coils would be gapped, it will be pulled off the winder.
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Another main characteristic of Clopay torsion springs is they possess a winder cone at one end which is attached to the winder found at the end bracket. Actually, Clopay torsion springs are always installed at the two ends of the shaft (if there are two). Even if there is only one torsion spring, it would occupy the one corner of the shaft. That's why Clopay springs bear a mark L or R indicating whether the spring will go on the left or right hand side of the door. At the other end, there is a stationary cone. In the case of a Clopay torsion spring system, this is often called a winding cone. In contrast to standard torsion springs, Clopay ones use this winding cone to secure the torsion spring before it is wound.