Recent content by Dub

ModelRailroadForums.com is a free Model Railroad Discussion Forum and photo gallery. We cover all scales and sizes of model railroads. Online since 2002, it's one of the oldest and largest model railroad forums on the web. Whether you're a master model railroader or just getting started, you'll find something of interest here.


  1. Dub

    American Flyer S gauge model 7 transformer problem

    The bulb could be a lower voltage. There are screw adjustments but have no idea how.
  2. Dub

    American Flyer S gauge model 7 transformer problem

    No it should not. The button should work easy and break the connection which is ideal for reversing the engine. When tripped the center bar touches the top which I presume gives the red light. All you can do is check the bar positions and check the wiring.
  3. IMG_20250320_162116397small.jpg

    IMG_20250320_162116397small.jpg

    • Dub
    • Media item
    • Comments: 0
    • Category: Wiring and DCC
  4. IMG_20250320_161806903small.jpg

    IMG_20250320_161806903small.jpg

    • Dub
    • Media item
    • Comments: 0
    • Category: Wiring and DCC
  5. Dub

    American Flyer S gauge model 7 transformer problem

    I found the problem. I removed the case and shorted the transformer and noticed the position of the circle piece on the left. If you look above the bar is inserted into a step on the wheel. That is the set position of which you are not in. The bar if you look at yours extends beyond the step...
  6. Dub

    American Flyer S gauge model 7 transformer problem

    It should not do that. With the cover I see the disconnection of a set of points It is only at the reset after power loss that something else is moved. Here is the sketch of the 7B
  7. IMG_20250318_145837349.jpg

    IMG_20250318_145837349.jpg

    • Dub
    • Media item
    • Comments: 0
    • Category: Wiring and DCC
  8. Dub

    American Flyer S gauge model 7 transformer problem

    The bulb I have is 18 volts screw base. The power shuts off under load with no light. I did notice the reset button untrips something when it trips. So untripped the power cuts off, and resets when the breaker is tripped. I suggest tripping the breaker and then reset it.
  9. Dub

    The U.S. Navy's weirdest new locomotive

    Here is one of the old ones.
  10. IMG_20250318_143214039small.jpg

    IMG_20250318_143214039small.jpg

    • Dub
    • Media item
    • Comments: 0
    • Category: Wiring and DCC
  11. Dub

    American Flyer S gauge model 7 transformer problem

    The reset button kills the power by separating contacts. It does not take a lot of effort to do that. If you force it down it make another contact. Just a guess. All I have is a 7b and I am not sure of the difference. It is not very complicated so you could draw out the connections. A few...
  12. Dub

    The U.S. Navy's weirdest new locomotive

    Thanks for posting.
  13. Dub

    Need bearings for old Lionel motor

    Another approach is remove the bearing and use red Permatex to set it in place. Red is used for engine studs.
  14. Dub

    Need bearings for old Lionel motor

    One guess, is measure the shaft diameter and see if it matches any brass tubing.
  15. Dub

    Lionel KW Transformer Problem

    To go any further a meter would help. Check that all the coils for voltage output. I suspect the circuit breaker. Maybe a couple of jolts will reset it. Check the wiring is where it is suppose to be. Circuit breaker is #1. The terminals do break away from the riveted bars. Check all of those...
See more




Affiliate Disclosure: We may receive a commision from some of the links and ads shown on this website (Learn More Here)

Back
Top