| Author |
 Topic  |
|
|
bill1947
New Hire
12 Posts |
 Posted - 07/24/2011 : 3:38:25 PM
|
Hello. I want to connect 2 loops with each loop on separate xformers. On each loop the outside rail is hot side and inner rail is negative or ground. I show 2 tandem turnouts connected across the inside and outside loop for access to each loop for any train. At the center of each tandem turnout both rails (plus side and ground side) are broken to segregate inside power and ground from outside power and ground.
Link below goes to a diagram of the above. Am I ok to go or will I burn my barn down as is? We like your advice. Thank you.
http://img.villagephotos.com/p/2011-7/1368219/wiringquestion.jpg |
A farting horse will never tire and a farting man is the one to hire. |
|
|
Dave Silvernail
Section Hand
USA
61 Posts |
Posted - 07/24/2011 : 5:24:27 PM
|
There are a couple more bits of information needed. First is this DC, DCC, or High Rail AC? Are you trying to run two trains in the same direction or opposite directions? How and when do you plan to change tracks with trains running? It may be easier just not to interchange the two loops.
Dave Silvernail |
 |
|
|
bill1947
New Hire
12 Posts |
Posted - 07/24/2011 : 5:46:46 PM
|
Yes. Case 1 - Two trains on separate loops as if no crossover. Case 2 - To run 1 train across both tracks. To set both transformers same direction and same speed. As engine crossed gap it would use "the other power".
As engine hits the transition, the wheels would bridge the gap between power sources as I have it illustrated or not?
I have Atlas electric book but it is not conclusive. I have reviewed dual cab control and find it more than fun. As you say, it might be simplest to leave off the crossover.
|
A farting horse will never tire and a farting man is the one to hire. |
|
|
|
bill1947
New Hire
12 Posts |
Posted - 07/24/2011 : 5:48:26 PM
|
| This simple HO dc and not DCC |
A farting horse will never tire and a farting man is the one to hire. |
|
|
|
Dave Silvernail
Section Hand
USA
61 Posts |
Posted - 07/24/2011 : 6:55:38 PM
|
The Atlas electric book while confusing to you is correct. With the dual throttle control, one rail is always the "Common Rail". This rail is wired to both throttles, it really does not matter to which rail wire on the throttle. The second wire from each throttle is wired Tha Atlas Selector. Throttle A to the top and throttle B to the bottom. The selector acts like a single pole/double throw/ center off toggle switch. When the switch is thrown for that block and a train is there, the throttle has a complete circuit and the train can move. The other throttle does not have a complete circuit and has no effect on the train. A second train in another block can be switched to the other throttle and can be controlled. If both trains are going the same way and the blocks are not switched the trains will pass from one throttle to the other with very little change. If the trains are heading opposite directions and the turnouts run one trian into the second throttle, then there will be a shorted circuit and everything will stop. There are other components that can be added to stop a complete melt down. Your diagram of your track needs five blocks to run trains as you would like. The inner circle would have two blocks, it would be divided between the turnouts and directly across for there. The outside loop would have both turnouts in one block, and the rest of the loop divided into two blocks. Study the Atlas electrical book, if you have more questions you can shoot me an email. Remember there is no such thing as a dumb question.
Dave Silvernail |
|
|
|
Neil M
Fireman
Australia
2173 Posts |
Posted - 07/25/2011 : 07:25:08 AM
|
Dave is correct in what he says. I would just add, most train controllers nowadays have a cut out on them so that if there is a short circuit they will turn off and you won't set fire to anything  |
Built a waterfront HO layout in Ireland http://www.railroad-line.com/forum/topic.asp?TOPIC_ID=22161 but now making a start in On30 in Australia |
|
|
| |
Topic |
|
Wiring question
