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Reply to "L Rotary Coal Tipple"

Good news!  Sort of.  While laying in a bazillion pieces, I got the thing to work!  For those wanting to understand how to get one of these sick puppies to work, here's what I did:  After getting the clutch gears unlocked, and figuring there is usually only one thing that goes wrong at a time with stuff like this, using clip leads, I shorted out all the micro-switches and put 16VAC power to the unit.  Nothing.  Then, remembering that the rotating part with its red LED was not in the circuit, I figured that the two car-positioning micro-switches must be in series, and, when both are closed (that is, the bathtub gon is in its correct position for dumping), this part of the electro-mechanical circuit, along with four spring-loaded connectors that provide power to and from the circular metal strips on the geared, rotary end-pieces, form a giant dark web of series-connected parts to get continuity up to and back from the rotating part of this unit.  Very clever...but mighty complicated!  (BTW, a fifth spring-loaded connector, with it's own circular metal strip on just one of the rotary end-pieces, sends ground to the LED, and also feeds the outer track rails...but I digress.)

So when I attached another clip-lead to the two side points on the base, to bridge the up-and-back part of the circuit (the actual part the rotates), and powered up the unit, still nothing...until I bridged the 'Start Switch'. terminals.  Then...PRESTO!...the unit came to life!   Which is another way of saying that the motor turned on, and maybe more importantly, when I removed the micro-switch clip-leads, it also reversed itself at the end of its trail.  I then removed the clip-lead bridging the "SS" terminals, and then bridged them momentarily with my screwdriver, the unit started up, and ran until the 'forward turn-off micro-switch was engaged.  Another quick screwdriver bridging and the unit reversed itself and ran again until its "reverse turn-off" switch was closed.  Finally, the unit now worked as advertised...while still in pieces!  So now, the next major hurdle (actually, the part I am dreading), is putting this hummer back together again.  More on this later.  JP

 

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