Chris wrote :-
" Good luck as this might tax your limits depending on the age of the loco's. Should not be to much trouble with Hornby as they had a dry run with Zero One. The hardest I have found is Wrenn locos which required replacing one of the brush sleeves with an insulated one.
When you are talking about harness are decoders you have ones with plugs on are they wires only ? "
I can rebuild a PC no problem but some of my son's loco's are causing problems.
The Hornby Class 25 was no problem, good design to me as it has twin pick up points !
Then onto his Hornby HST Midland Mainline which appears to have an earth 'built in' to the motor so having difficulty isolating the motor.
His Lima Class 20, what are the two coils of wire that look like home made electromagnets that come between the pick ups and the motor ? Can they be discarded for DCC operation or do they provide some sort of assist when starting the loco ?
He's also got a number of 0-4-0 loco's i.e. Percy, Smoky Joe and a Virgin shunter that have the X8987, 59 or 61 chassis assembly. These have no wiring at all, just pick ups that rise up within the body to contact with the motor pick up points directly. Tried to isolate these and connect the track pick up wires from the decoder directly to them but whilst the decoder will make the motor turn the gearing tolerance is so small it slips and the loco will not move.
He also has a R357 with the X.337 motor which I have to repair with a new armature, will I have similar problems with that ?