Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

3% grade problem solved

740 views
4 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    April 2006
  • From: greenville,south carolina
  • 297 posts
Posted by dwhitetop2 on Tuesday, October 31, 2006 6:49 PM
Again many thanks guys. ARTHILL you are so right we learn every day of our lives. Ive been an automobile technician for 35 years and every day I learn somethig new. thanks again everyone ill be calling on you again very soon.      Dave
  • Member since
    July 2006
  • From: Jones County, Georgia
  • 1,293 posts
Posted by GearDrivenSteam on Tuesday, October 31, 2006 1:03 PM
Good for you. Typically, grades larger than 2.5% are pretty rare. Logging lines used much steeper grades, but had special locomotives to handle them. 12% and greater was not uncommon. For a standard freight/passenger service though, 2.5% was generally about the steepest you'd see.
It is enough that Jesus died and that he died for me.
  • Member since
    March 2005
  • From: New Brighton, MN
  • 4,393 posts
Posted by ARTHILL on Tuesday, October 31, 2006 12:12 PM

Well done. I am sure you are aware that one good loco will not pull as many cars up a 2 % grade as on flat ground, though more than a 3%. Those great stories of long trains are on flat surfaces.

As far as learning a lot, I have only been doing this for 60 years, and I am amazed but how much I don't know.  Each day I seem to learn something I did not know before, in fact I did not even know I did not know it.

If you think you have it right, your standards are too low. my photos http://s12.photobucket.com/albums/a235/ARTHILL/ Art
  • Member since
    February 2005
  • From: Vancouver Island, BC
  • 23,330 posts
Posted by selector on Tuesday, October 31, 2006 12:07 PM

Okay, Dave, good for you.  Just a quick reminder that your 2% grade will take considerably longer to generate the 3" clearance you'll need typically between the rail tops below whatever passes over them if you have tracks crossing each other.  If you intend to have nothing over the tracks, no tunnels or overpassing tracks and roads, then you can simply lay the 2% grade.

If you do have an overpass where one track crosses over another, don't forget that you also need a grade length to yield enough height to get a supporting structure under the upper track and still have clearance to the lower rails.

  • Member since
    April 2006
  • From: greenville,south carolina
  • 297 posts
3% grade problem solved
Posted by dwhitetop2 on Tuesday, October 31, 2006 5:47 AM
Good morning all!  thanks for all the great suggestions on my grade problem. I went down to the train room last night and started dismantleing the 3% grade, going to put in a 2%. from all the suggestions i think this will work much better. I have only been in mrr for 2 yrs. so im still learning a lot. i didnt think about adding extra engines or pushers. thanks again for all your valuable info.     Dave

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

There are no community member online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!