Hi Willy,


Fred Krafft gave a paper at Indianapolis in 1979. It was titled "Single-Twist Bunching" and the abstract is as follows:

"Evaluation of desired strand quality, production cost, and savings of insulation is required for choice between single-twist and double-twist bunching for production of flexible conductors smaller than about #4 AWG. Single-twist and double-twist bunching, product quality, construction differences, and economic factors are considered. One advantage of single-twist bunching is the savings in insulation due to the smaller diameter smooth strand."

The paper is classified at WAI as Paper Number 3184 and it can be purchased here: www.wirenet.org/technical/abstract/Abs_Detail.cfm?ID=3184

Is this the paper you are referring to?

Cheers and best regards,
Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com

Howar..

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