Im thinking of doing this myself, so im defiantly interested in how you go about this...
is it as simple as figuring out which is the -ve and +ve for each winding and connecting the -ves together, using the +ves as each phase?
For example, in the pic in the op, if we go in a clockwise direction lableing each pair Y+Y- B+B- R+R- would you simply join each of the YBR negatives and use each +'ve as phase wires? (ignoring the fact that these aren't the actual positive/negatives for each winding)
looking at lebowski's method for figuring out windings for delta,
Lebowski wrote:ok, the clue is to connect everything in a triangle.
Take one winding (lets call this one 1), this is your reference. Spin motor (drill press ?) and measure AC voltage accross this
winding using normal multimeter (in the AC setting !!!!).
Take another winding (2 ?) and connect it to the first one in series. Measure the total series AC voltage. I know it sounds a bit
strange but the total series AC voltage should be equal to the AC voltage of a single winding. If you measure around 1.7 times the
voltage of a single winding then reverse the connections of winding 2 to end up with an AC voltage equal to that of a single winding.
Now connect the third winding (3) in series with 1 and 2 and measure the AC voltage again. If you measure 2 times the voltage
of a single winding, reverse the connections of winding 3. If the total AC voltage of the three series connected windings is 0 then
you've connected everything in the correct order. You can now short the start of winding 1 with the end of winding 3 (remember,
the voltage was 0 so this is no problem).
Now you got your 3 windings connected in delta.
then can we use the same method to find each + and - for each winding? ie in the above example we'd take the 1st wire of each winding and use them as phase wires, and short the 2nd wire of each winding to get wye rather than delta?