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Discussion Boards => HO => Topic started by: Santa Fe buff on June 09, 2008, 05:15:42 PM

Title: Should it be less steep?
Post by: Santa Fe buff on June 09, 2008, 05:15:42 PM
My friend's layout is at an angle to were about 90% of his engines can't pull 5 cars up the hill, plus it is a cuved incline. It appears to posbaby be an 6.0 or 6.5, or even 7.0 grade. Should I lower it? I can't make and major improvments because of the tight space.
Any help?  ???
Title: Re: Should it be less steep?
Post by: Pacific Northern on June 09, 2008, 05:27:22 PM
The grade you are referring to should be for geared engines only.
Title: Re: Should it be less steep?
Post by: kevin2083 on June 09, 2008, 11:38:49 PM
3% should be the max
Title: Re: Should it be less steep?
Post by: Bill Baker on June 10, 2008, 09:30:30 AM
What Pac NOrth and Kevin said is true.  If you have room only for a small layout, try, try, try to avoid any grades.  There is simply never enough room to make a proper inclined elevation.

Bill
Title: Re: Should it be less steep?
Post by: Daylight4449 on June 10, 2008, 05:02:35 PM
my devils loop has a long curved incline at 3/8ths of an inch a piece of 18 inch radius track.
Title: Re: Should it be less steep?
Post by: Pacific Northern on June 10, 2008, 06:14:30 PM
Quote from: Daylight4449 on June 10, 2008, 05:02:35 PM
my devils loop has a long curved incline at 3/8ths of an inch a piece of 18 inch radius track.

Check out the Woodland Scenics site

http://www.woodlandscenics.com/

note the recommended incline for most layouts is
Title: Re: Should it be less steep?
Post by: Daylight4449 on June 10, 2008, 06:32:41 PM
yes, what is it
Title: Re: Should it be less steep?
Post by: Pacific Northern on June 10, 2008, 06:56:10 PM
Quote from: Daylight4449 on June 10, 2008, 06:32:41 PM
yes, what is it


As you indicated your rise is 3/8 " per piece of track. Track is 9" in length. Your rise is 1/2" per foot of track. Therefore a 4" rise would take you 8' of track, a 2% rise takes 16'.

Title: Re: Should it be less steep?
Post by: japasha on June 10, 2008, 10:18:02 PM
I you use a typical over-and-under set for a figure 8 with 18 inch radius, you will have a grade of about 5.2%, about the same as the Saluda grade on the Southern Railway, a very difficult piece of railroad to operate on.

22 inch radius lowers this to 4.5%; still steep but easier on the rolling stock.
Title: Re: Should it be less steep?
Post by: ebtnut on June 12, 2008, 03:46:03 PM
Here's a shorthand for figuring grades:  1" in 24" = 4%; 1" in 36" = 3%; 1" in 48" = 2%.  It is not exact, but usable enough for most model railroad planning.  As noted, anything above 4% is pretty much geared engine territory, or usable only for very short trains. 
Title: Re: Should it be less steep?
Post by: Daylight4449 on June 12, 2008, 05:56:21 PM
Cool and, why do you think i call it "Devils Loop". ;D
Title: Re: Should it be less steep?
Post by: Santa Fe buff on June 13, 2008, 02:08:08 PM
Well, he is thinking on making it bigger, so I'll just expand it to make a better grade then. Thanks for all the help.