A Curtain Call with a Drum Roll and Applause to all Responders to my Initial Posting ...
This afternoon I performed test runs on all three trolley lines with my MTH bump-and-go Santa Handcar on the rails of each line in rotation. Using alligator clips, I temporarily attached a small starter set HO transformer (with 16 VDC, 7 watts output) to each line and opened the throttle to the max.
The handcar ran smartly back and forth on all three lines, but made a hesitation at one section of O27 track on Line 1. Upon close inspection, I discovered that track section had deformed rail ends and loose pins, so I replaced it. Presto -- hesitation problem solved.
I also test-ran the larger two-truck trolley (made by Industrial Rail) on the longest trolley line of the three using the same HO transformer as the power source. Same song, second stanza.
I initially toyed with the idea of using three HO starter set hobby transformers (each one not much bigger than a pack of cigs) for this trolley adventure for individual control of trolleys on each line. But that seemed like an inelegant solution with unknown long-operating-sessions outcomes; i.e., over-heating and possible burnout.
Your suggestions will provide "head room" in the control system and offer a much more elegant solution. The pieces suggested are now on order, and I expect them to arrive at Mottler Station in a few days. I'll mount the pieces in a project box and then apply for an Honorary Technician Certificate.
Mike (ritrainguy)
Old dog learning a new trick with thanks to sagacious friends who are generous with good advice.
