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I agree with other posters: You will rue the day you decided to put a grade in the yard. I think you may not be able to get a single loco to pull 40 cars up a 1% grade. A forty car train in HO is at least 21 feet long. MY question is, do you have room for 20 foot trains on your layout? Maybe some selective compression is in order here. <br /> <br />Your layout must be huge. A one percent grade will take 100 feet of mainline to climb one foot. How long is your run??? I wrestled with these issues and ended up making the deal with the devil and putting in a helix. My room is fairly small (13' x 22'), so I didn't have a lot of options. Sounds like you have more space. <br /> <br />Guy
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