Therefor we must change the main track polarity while the train is on the loop track. Automatic polarity reverser units are possible with dcc due to the highconstant voltage on the rails.
Dc Motor Reversing Switch
Automatic polarity reversing switch. If you are using a snap motor you can use a switch with two more poles to reverse the polarity when you activate the turnout. Industec toggle switch 3 position polarity reversing dc motor control maintained 12v 250 quick connect 6 pin double pole double throw spade plug wwires 50 out of 5 stars 2 1480 14. Enjoy and leave me. To make my instructions a little more easy to. As you can see every time a train travels around the reversing loop the track polarity must be changed and the track switch must be set. If you throw both switches simultaneously you can do both while the train is in motion.
However all is not necessarily lost. Amazons choice for reverse polarity switch industec wired 20 amp 12v dc motor polarity reversing rocker momentary automatic reset switch 49 out of 5 stars 35. Analog does not maintain a constant on rail voltage varying voltage level being the inherent speed control and therefore cannot do auto polarity switching. Get it as soon as tue jul 21. If we changed the polarity of the loop power while the train is in the loop the train would suddenly change direction. Use a double pole double throw switch to manually allow for reversing.
Industec wired 20 amp 12v dc motor polarity reversing rocker momentary automatic reset switch. Use one digitrax booster set for automatic reversing and another set for normal operation. The toggle switch will reverse the polarity of the rails in the reversing section once the train is in the loop. 45 out of 5 stars 100. Industec toggle switch 3 position polarity reversing dc motor control maintained 12v 250 quick connect 6 pin double pole double throw spade plug wwires 50 out of 5 stars 2 1480 14. You need to decide if you want to purchase a switch or salvage one from something else.
49 out of 5 stars 35. Gama electronics 30 amp toggle switch 3 position polarity reversing dc motor control momentary. Wiring for this switch is deadly simple. If you are using ground throws you will need to make it a two step process. To keep the train moving forward you must also change the direction on the throttle. Simple polarity reversing switch step 1.
A dpdt switch to reverse the polarity in the loop and then throw the ground throw. When this happens the train will also reverse direction.
Gallery of Automatic Polarity Reversing Switch
