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Author Topic: Points on a gradient?  (Read 352 times)

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Offline Papyrus

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Points on a gradient?
« on: May 17, 2019, 05:01:30 PM »
Slight setback with my slowly-evolving layout. I was a bit over-optimistic about the steepness of a gradient and, unsurprisingly, locos are struggling. I'm trying to work out ways of improving the situation without wholesale redesign. One possibility would involve putting a set of points on a slope, facing downwards. Is this a Bad Idea?? I suspect it probably is.

All comments welcome!

Cheers

Chris
"As I always say, it's a funny old world. Do you always say that? Oh good." (Jill Tweedie)

Offline port perran

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Re: Points on a gradient?
« Reply #1 on: May 17, 2019, 05:16:57 PM »
Can you give a bit more information as to how the points would help?
I have a set of points at the very bottom of a steepish slope and thatís fine as long as I donít get a separation of wagons part way up the slope. Then I get trucks running away very quickly and coming to grief on the points.
Engines cope fine with the points as long as speed is held right back.
If it looks right then it most probably is right.


Offline Papyrus

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Re: Points on a gradient?
« Reply #2 on: May 17, 2019, 06:35:53 PM »
The points are already in place at the bottom of the present slope but I need to make the slope shallower without moving the position of the points too far, so extending the gradient past the points might solve the problem. As you say, though, derailing is probably inevitable!

Cheers,

Chris
"As I always say, it's a funny old world. Do you always say that? Oh good." (Jill Tweedie)

Online zwilnik

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Re: Points on a gradient?
« Reply #3 on: May 17, 2019, 07:14:29 PM »
Can you give a bit more information as to how the points would help?
I have a set of points at the very bottom of a steepish slope and thatís fine as long as I donít get a separation of wagons part way up the slope. Then I get trucks running away very quickly and coming to grief on the points.
Engines cope fine with the points as long as speed is held right back.


That makes them catch points :) (unless it tends towards sending the runaways into the main line!)

Offline PLD

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Re: Points on a gradient?
« Reply #4 on: May 17, 2019, 07:42:53 PM »
One possibility would involve putting a set of points on a slope, facing downwards. Is this a Bad Idea?? I suspect it probably is.
A point on a constant grade should not be a problem. It is a change of grade part way through the point that should be avoided...

Offline Philip.

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Re: Points on a gradient?
« Reply #5 on: May 17, 2019, 08:25:20 PM »
I have 2 sets of points on a slope at the start of a 2% gradient, all my locos seem to cope ok

Offline Newportnobby

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Re: Points on a gradient?
« Reply #6 on: May 17, 2019, 10:06:54 PM »
One possibility would involve putting a set of points on a slope, facing downwards.

Facing downwards I can't see any problem unless your gradient is very steep.
Your diesels may require a brake tender for unfitted freights, though ;)

Online Bealman

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Re: Points on a gradient?
« Reply #7 on: May 17, 2019, 11:05:22 PM »
As PLD says, should be ok as long as the grade doesn't alter under the points (and, I suspect, for a little way on either side).
Vision over visibility. Bono, U2.

Offline Papyrus

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Re: Points on a gradient?
« Reply #8 on: May 18, 2019, 09:50:04 PM »
Thanks for the replies. It seems like points on a slope may be OK in principle, but I'm still not happy with the idea. After a bit of brainstorming I've come up with a solution. It doesn't require too much in the way of redesign but does involve the sacrifice of one storage road and a slight reduction in operating potential but it's worth it, especially as it solves a couple of other problems at the same time. Now all I need is a few evenings to do it...

Cheers,

Chris
"As I always say, it's a funny old world. Do you always say that? Oh good." (Jill Tweedie)

 

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