Hornby O gauge DC motor

There are no field wires since this is a permanent magnet DC motor. According to the Dallee instructions you should just connect the orange and yellow wires together.

Did you check with Dallee whether this should work; the Hornby loco needs 20V DC and I wonder whether the Dallee unit can supply that. 

Did you try the loco at DC? Some of these have lost their magnetism and need even more volt to run (and then run hot).

Regards

Fred

Hi Fred I did have the yellow & orange wires soldered together.  I did run it on DC  about 18 or 19 volts (as high as my DC transformer will go) not real fast but at a reasonable pace. I'll give Dallee a call tomorow to see if he can help, Thanks  for the input

Because there is only one brush wire; rectification and polarity change for reversing has to be done before power gets to the track.

That board counts on both brushes being isolated feeds.

You'd use a diode(1/2 wave) or bridge rectifier in the engine for one direction only operation fed ac... Or off-engine; 1-3 toggles for reversing and/ or choosing ac/dc; mounted between transformer and track. 

I guess you could also use the board vs one or two toggles; put between transformer and track.

When I talked to the gentleman at Dallee he said he was not familiar with that motor. But he said to check the brushes. I did & found 1 grounded to the frame I took apart the motor & put some heat shrink over the 1 brush well & fiber washers on both sides where it goes thru the brush plate. I than checked for ground Now both are isolated (fortunately the brush wells have a nut on either side making it easier to remove the brush wells, but you still have to remove the armature) Engine is running fine forward & reverse on AC  low amps but still higher voltage  16 or 17 v   Thanks again to  Fred & Adriatic & Dallee electronics