They are small, only about 4 inches long and have a maximum resistance of about 5 ohms. Search for "Lionel rheostat" (without the quotation marks) on Ebay. You should be able to get them for $5 to $10 each. Some model numbers are 81, 88, or 95. They were used before the war with transformers whose output could not easily be adjusted.
Bob Nelson
Doug Murphy 'We few, we happy few, we band of brothers...' Henry V.
No. The problem is that the two transformers powering the track on either side of the gap are trying to enforce their own, different, voltages on the same train when the pickup crosses the gap. This produces a fault current that is very like a short circuit. It causes arcing at the pickup rollers, inductive voltage spikes, and, if the train happens to stop over the gap and you are using a single multi-output transformer, damage to wiring and transformer, which is not protected by its circuit breaker.
The problem is of course exacerbated when someone accidentally increases the voltage differences among the transformers.
The best solution I know of is to use a single transformer with a passive voltage-dropping element in series with each of the blocks (except for the highest-voltage, uphill, block). The most practical device for this is an old-fashioned rheostat.
WOW! I'm noticing all kinds of stuff after looking at these for awhile. Hope others are seeing these.
I see a Christmas kitty. That should be interesting. My cat likes to run off with my trees and chew them.
Also noticed two loops around the tree. A Christmas BEEP. And is that a K-line Christmas set? I think you've got it pretty well covered. Very impressive.
Just reread your original post. That is the K-line set. Looks nice.
Rob
Very nice set up. I like the way the Plymouth switcher looks pulling the Marx cars too! Great idea. The snow with the lites underneath looks really cool too.
But I think you are breaking the rules. No Christmas layouts before Thanksgiving, Man Law.
Our community is FREE to join. To participate you must either login or register for an account.
Get the Classic Toy Trains newsletter delivered to your inbox twice a month