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If you are trying to match locos to run uncoupled around a layout, then it is complicated.
If the locos are coupled, it is easy.
When coupled, a mismatch is not too important, the faster loco will push(or pull) the slower one.
If you search on ebay for a;
High Power Wirewound Potentiometer,
you will find what you need.
However, selecting the correct ohmic value is difficult.
The coal dumper motor ohms could be a good starting point.
Better to use one of these...
I go to the recycle bin. Find thin strong plastic and cut a shape to fit in the frame, and cut holes for the motor mounts.
A semi-permanent isolation, unlike paint or rubber tape;
Look closely at the frame, also notice the spring tabs cut off the motor bottom.
Warmer and a little snow in NJ this morning.
Well, layout track testing came to an abrupt halt today.
I was using a Bachmann 4-6-0 as it is currently my most 'jumpy' loco and finds tiny imperfections in the rail.
I may put this aside for now, and get that decoder into another Varney Ten Wheeler.
Oh heck!
It's 11:00 am on the east coast of USA.
Been working for three hours trying to get a kink out of my 18" radius loop.
Three days now total, using every tool i own, trying multiple options, what a pain.
And the coffee got cold again:mad:
11°F this morning in Atco, NJ.
Stay inside today!
Still trying to get my track work done. I removed a 2% grade on 18" radius and trying to reuse the flex track. I may have to toss a small section and replace with new.
I'm driving a school bus. A kid was standing arguing with the kid behind him. I tapped him on the shoulder to get his attention. Got called into office same day for a reprimand!
Still perfecting my Varney upgrades