Subject:
|
Re: Reversing Loop without Insulated Tracks
|
Newsgroups:
|
lugnet.trains
|
Date:
|
Wed, 11 Aug 2004 02:43:45 GMT
|
Viewed:
|
1481 times
|
| |
|
|
In lugnet.trains, Paul S. D’Urbano wrote:
| |
In lugnet.trains, Larry Pieniazek wrote:
| |
In lugnet.trains, Ross Crawford wrote:
| |
That, as I see it, is the idea. The point B is always set straight. There
may be momentary short(s)
|
Note that these deliberate, if momentary, shorts may *possibly* have a long
term negative effect on your controllers. This would probably not work well
with regular Model Railroad gear, but then it’s not designed to take the
abuse that kids give LEGO trains.
|
Hi Larry and Ross,
I want to be sure I’m understanding this correctly:
The simple act of pushing through the points won’t cause the short. In other
words, if you push a car with regular wheelsets through the points it won’t
cause the electrical connection to switch from the straight to the curve or
vice versa. The problem is only when the motor pushes through. This is
because the motor has two wheels on each side that are directly connected to
each other inside the motor. When one of these wheels makes it to the
straight part while the other is still in the curve you’ll end up with a
momentary short inside the motor. This is caused by the fact that the two
wheels on each side are directly connected.
Is this correct? I recently tried a similar setup for a reversing loop that
worked on the same principle as this one. I thought I could always avoid a
short by careful switch settings but hadn’t realized this issue with the
motor causing the short until I read this thread. I think I’ll stop doing it
now since I’m not interested in shorting the life of my motors.
|
Yes, that is correct. The electrical contact is not made by the switching
section of rail. I doubt you would cause any damage to the motors - any damage
would be to the controller. They seem to be pretty tolerant electrically, but as
Lar said, continued shorting, even if momentary, may eventually cause damage.
ROSCO
|
|
Message has 2 Replies:
 | | Re: Reversing Loop without Insulated Tracks
|
| (...) Ha, I knew I'd get something wrong. Of course it would be the controller getting stressed and not the motor. Either way, I'm not interested in stressing anything I don't have to. Thanks ROSCO (and thanks Mat for your reply as well) Regards, (...) (20 years ago, 11-Aug-04, to lugnet.trains, FTX)
| | | Re: Reversing Loop without Insulated Tracks
|
| (...) I'm not a big Train-head, so I'm trying to figure out where the problem is from various bits of this discussion. Is the problem that one pair of wheels is connected to power flowing in one direction and the other is connected to power flowing (...) (20 years ago, 11-Aug-04, to lugnet.trains, FTX)
|
Message is in Reply To:
| | Re: Reversing Loop without Insulated Tracks
|
| (...) Hi Larry and Ross, I want to be sure I'm understanding this correctly: The simple act of pushing through the points won't cause the short. In other words, if you push a car with regular wheelsets through the points it won't cause the (...) (20 years ago, 11-Aug-04, to lugnet.trains, FTX)
|
25 Messages in This Thread:
 
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
