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| | |-+  Elevating a section of track on HO
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Author Topic: Elevating a section of track on HO  (Read 2422 times)
sloan

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« on: July 24, 2008, 09:49:34 PM »

What is a good % grade for  Ho ?
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Jhanecker2

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« Reply #1 on: July 24, 2008, 10:51:17 PM »

Probably in the range of 1.5 to 2 % would be acceptible ; any more  starts leading to slippage and reduced towing capacity.
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Paul M.

T&P Railway in the 1950s


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« Reply #2 on: July 25, 2008, 10:51:22 AM »

3% is considered maximum.
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barrowsr

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« Reply #3 on: July 29, 2008, 08:33:44 AM »

Most grade situations are driven by layout size.  You grade will be the a function of the length of track needed to cross over another section of track.  You can save a little space by using a shallow bridge vice plywood and roadbed at the crossover point.  A figure 8 layout on a 4x8 sheet of plywood will probably have more than a 4% grade yet many folks make this work by using few cars and keeping train length at a minimum.  Be sure to make the transition from flat to grade (up or down) a gradual one or you'lll get a shoestring effect and derailments.  Most home layouts have between 2% and 6% with the really largest able to have less than 2%.

Hope this helps,

Robin
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ebtnut

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« Reply #4 on: July 29, 2008, 02:08:47 PM »

Kind of a rule of thumb: 

Main Line operations; long trains - Keep to 2% or less

Branch Line/Short Line; fairly short trains - Up to 3%

Logging, Mining, special operations - Up to 4%; logging maybe 5% with geared locos. 
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Yampa Bob

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« Reply #5 on: July 30, 2008, 12:16:08 PM »

The only grades I have are the transitions from mainline to the freight yards.  I have gradual tapered beds made of balsa for the drill leads, so the grade is only about 2%. Moving several cars around with the short switcher presents no problem.  I would prefer a lesser grade, but I'm limited with the 4 X 8 layout.

As mentioned, avoid abrubt elevation changes.
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