Scattered vs Layered

"Scatter-wound" is just another sales slogan like "aged magnets". A more accurate term would be "random-wound," and any multi-layer winding of wire, finer than 38 AWG, is more or less random-wound. Electricity doesn't distinguish between layered and random-wound coils -- what matters is the count of turns-per-square and the relation between the length and cross-section of a coil.

Tensioning

Even the most advanced coil winders need modification to wind elongated pickup bobbins. Oblong bobbins pull different lengths of wire during the phases of each rotation. This requires synchronized changes in tension during each rotation to avoid pressure points at the narrow ends of the bobbin. These pressure points can cause shorts in the coil which create eddy currents.

Hand vs Machine

Do you really believe someone hand-guides 8000 turns of copper wire that is as thin as a human hair on a bobbin to complete, maybe, 30 coils per day and can guaranty any consistency? A well-wound coil is a well-wound coil regardless if it's wound with professional equipment, or if somebody's great-grandmother winds it to an old French recipe with Napoleon's modified coffee grinder and chops off the wire after a mile with an antique guillotine!

Copyright © 1996-2010 Bill Lawrence