
I have added two wipers to the 2-8-0. both made from .015 phosphor bronze wire; which is a good size for Ho. as the size increases the stiffness does as well and the springiness decreases. I'm not fully satisfied with the fit of the wipers, but they are close. from here I will need to drop the axles, and fine tune them with the wheels out, so there will be the right amount of contact when the wheels are reinstalled. a tricky process, but electrical pick up is the Achilles heel of many locomotive mechanisms.
I want good contact without causing too much drag, and this is a pretty good size for a compromise. on lightweight HOn3 locomotives, where drag is more of a problem, I am likely to use .010 wire. This locomotive is has a good strong motor, and a good drive system, so drag won't be much of a factor.
The front wiper picks up off of the front insulated driver, and the second picks up off of the two center insulated drivers. I'm studying to see if there is room to add a third wiper for the rear insulated driver.
I have also found a way to re route the wire off of the cover plate (My addition- I like to get the electrons into wires as soon as possible), so that it is both much less visible and is tucked safely away
The white and brown striped vertical wire next to the motor is the frame wire. the bare copper wire off of the rear wiper pad is the insulated wire (there is a jumper to the front pad). If I don't add a wiper for the rear insulated driver, then all I have to do is to experiment to find out which way to hook up the motor termianls so that the locomotive runs in the same direction as my others; add the two wires and a plug that will go to the tender, which will eventually be wired for pick up off of the insulated side as well (can't have too much electrical pick up ). I like to get as much of the electrical path as possible into wires, my theory old brass doesn't conduct electricity well!
Should I wish to add DCC at a later date a decoder could be placed in the tender, and the power wires to the motor could be run with a separate plug. The brass castings for the headlights on this locomotive are primitive solid chunks, so If I want to make provisions for lighting I need to replace them or drill them out.
This locomotive has some real potential, it is very handsome, has a good mechanism, and I have packed a lot of extra lead into it, so it will be a heavy SOB, and hopefully will be a good performer on the 3.3% ruling grade on my valley division.
Bill Nelson