As ADCX Rob pointed out originally, things are pointing at connections. Track
is just the most likely source.
How big is this loop? How many feeds are you using,? Can you change ones position a few inches? Add another? Type, and size of wire? Have you swapped/jumped those.
Move some pieces around. If you can, spin the pins, before you crimp it tighter. It should clean the i.d. of the pin holes a little too.
Look for ring like cracks around any solder points on the tender. Reseat plugs. etc. Don't do everything at once, or you wont know what worked.
A voltage drop, and amperage reading might be interesting.
As well as the rectifying/regulator circuit on the whistle board, if it has a can motor in the whistle it has a rectifier too.(new air whistles use can motors)
Have brushes and armatures, of the engine and/or whistle, been checked? Gap in the 3 armature plates dust free?
Originally Posted by Dave Garman:
Adriatic,
I agree with you about the PW "Sparkies" - Some of my best light shows come from the little Vulcan motorized units. I love those little critters and tery to "collect them all" as they say.
Best,
Dave
If I starting being a honest to goodness "collector" more than the runner I am. Critters would likely be first. That was the first "completed" section of my Grandfathers collection. And though I owned more than my share as a boy, I wanted the v-plow bad, and rotary plow the next worst. The fire cars was the best critter ever! The hand pumper car flew. Like 150smph, but never seemed to derail.
Worst sparky critters I remember in numbers: gang cars, trolleys, work platforms, or the executive inspection cars.
The worst sparky I ever saw was an early customized/detailed Williams chain drive AB.
I wasn't impressed, Grandpa was very impressed, and bought another.
PW Alco the worst for me though.
The coolest Sparky did it by design! Even with the power out.
The MARX Mercury streamliner, a windup!.
(I know I saw an electric one too! Plated front)