On Thu, 26 Feb 2009 11:13:47 -0000, "N_Cook" wrote:

Does anyone know of a source of data for the traverse spacing, turns per mm
or mil, for the smallest wire gauges of say 45 to 50 SWG or 40 to 45 AWG.

If wire is 0.05 mm thick, say, then the traverse should lay down at
something marginally wider than that. I appreciate it is dependent on
drawing die imperfections/ enamel thickness/ chaffing etc but at least a
starting value and then suck it and see with a trial run or 2 with the
actual wire. Or a formula for the general case.

I am not sure if an allowance was made?
Looking at the table for travers on the Avo Douglas machine on page 21 of this
pdf:-
http://www.g1jbg.co.uk/pdf/avowave.pdf
Taking, for example, a 10 thou traverse, the table gives gears of 30,40 and
48,36 which fit precisely into the formula at the bottom of the table for 10
thou wire diameter. Similarly for 20 thou wire diameter.

--
Geo