The National Model Railroader Association or NMRA has these standards. It's about the only thing the NMRA is good for. ------------------ RAILROADING-TO-THE-MAX! Brent Tidaback, Member #234 and a N-Scaler to boot!
More about my hump yard. Remember it is only a small yard with five tracks about one yard each (+ a three tracks sidings, and a small roundhouse). The space needed is only 7´ by 2´. The height above the ground at each 100 mm uphills (-) and downhills (+) counted from the center of the uncoupling device is as follows: -200(41 mm), -100(40), 0(37), +100(31), +200(25), +300(20), +400(15), +500(11), +600(8), +700(6), +800(4), +900(3), and (2 mm) to the end at about +1200. Before the uncoupler is the sloop 1 %, just after it is 6 % decreasing from +300 to 5, 4, 3, 2, 1, and 0 %. Note that one inch is 25.4 mm. ------------ Enjoy, Helge Sandy River and West Forrest Railroad http://members.tripod.com/hkri1938
Hump Yard in N scale? Now that's dedication! I'm guessing tolerances would have to be really tight considering how a breeze can blow those little cars off the track! Keep us informed though...
<BLOCKQUOTE>quote:</font><HR>Originally posted by tunnel88: ...considering how a breeze can blow those little cars off the track! Keep us informed though...<HR></BLOCKQUOTE> It's not just the little cars that are affected by the breeze. I was watching the BNSF hump at Northtown, Minneapolis, when the sirens went off and 2 cars - a 50' boxcar and 68' centrebeam - came cruising along the bowl pushed by a slight wind. Stopped the hump yard dead. They had to fire up the second slug set (SD38P/TEBUC6) and zig-zag their way from outside the tower, up the hump, then down to the errant cars shoving them back to the line. Then they had to reverse the move to park the locos. About 30-35 mins was lost. Gary. ------------------ Gary A. Rose The Unofficial TC&W page N to the Nth degree!
I just dug it up the other day. It is in the N SCALE magazine July/August 1994 issue. Pretty neat setup, but to much work for me. I have to many engines and cars and need to finish my layout before even thinking about this. Take a look at it! Dave
Sorry Dave, I have not the slightliest idea of how to get that N scale magazine July/August 1994 here in Sweden. ----------- Helge
You right tunnel88. There is not much room for big tolerances especially on hump yards and in curves. I´m soldering all rail joints even to switches. There is a lot talking about that at the topics "Flexi track" and "Kato Unitrack" ------------ Helge
If it's any help, you might want to check out the summer sale at Pentrex Video. They have a Southern Pacific Double Feature (for $10 + S&H!) that includes a video by Southern Pacific that covers the Colton Yard construction from start to finish, and shows cresting, speed retarder operations, and the computer network that runs it all. Sure it's the prototype, but it could help when working on the model. Ed Harrison [This message has been edited by ten87 (edited 24 July 2000).]
I've had a small hump made from bridges on a older N scale layout of mine once and my suggestion for kadee or similar couplers is to put the uncoupler magnet on a flat track sighly downward angled but not too steep that there is no slack in the coupler (If you get what I mean that its slope enough to roll almost weightless to push with finger but flat enough to slowly stop itself). This should be the best idea and the next track piece can be steeper to make the wagons roll away without going back & forth to get it uncoupled as the small slope creates slack in the coupler that it alway uncouples. This works unless you have a heavy-weighted car that refuse to slacken in the coupler on that small slope. This had alway worked unless that car is damn long its middle is almost scrapping the track-slope bends (Espically my car carrier and passenger coaches but then these are a rare to hump at real yards anyway) Yuri........
Finally I managed to take some pictures of my Hump Yard. There are still a lot of work to do with the electricals and details around the yard. The track and turnout density is relatively high on this small yard compared with the rest of the layout. The yard has 19 meter of track and 13 turnouts, while the other part of the layout has about 67 meter of track and 28 turnouts. I will show two pictures under the "Favorite Layout Picture" ------------- Helge SR&WF RR
Now, I just came across this topic as a new post was added, sorry to jump in late. As for uncoupling MTs on top of the hump, it's pretty simple. Just keep shoving the train at a nice slow pace (about 5 scale mph). The actual hump never flattens out. It's up and then right back down (kind of parabolic). An uncoupler starting on the top and heading down the yard side would uncouple the cars with the force of gravity as the couplers open. I'd use Electro-Magnetic uncouplers so you can cut more than one car or push a Do Not Hump car over, then retreat, and continue to hump. My favorite hump yard to visit is CSXT's Selkirk Yard in NY. A few interesting facts about the Hump there: Height: 26 feet Grade: 3.1% front, 1.9% back, 5.0% Master Retarder, 1.2% or 1.0% group retarders Yard has 70 tracks fed by 11 receiving tracks. ------------------ Corey Lynch Pres - Rensselaer Model RR Society NEB&W RR http://www.rpi.edu/~lynchc/Railfanning/railfanning.htm - My Site http://www.union.rpi.edu/railroad/ - NEB&W
Finally I have manage to build my Hump Yard. There are still much more to do, but I send some pictures to "Favorite Layout Pictures" to show the progress. --------- Helge
I look forward to seeing the pictures Helge. ------------------ Paul Cassar-# Member number 50 SPAD Investigator #1 ICQ 61198217 http://users.bigpond.net.au/railroad2000
<BLOCKQUOTE>quote:</font><HR>Originally posted by HelgeK: There are still much more to do<HR></BLOCKQUOTE> Nice page. Check out our links page for information on exchanging links with TrainBoard.com ------------------ Ship It On The FRISCO! | IAMOKA.com
Heck, do like I did, I made a hump yard by accident! Where a newer phase of yard is added to an older part of my layout, there is a slight height difference. sometimes I can get my cars to roll nicely down the "hump", it is only the height difference of a cork roadbed to no-cork roadbed height that is needed to get them rolling about 8 inches ------------------ espee2 Home: www.tunnel13.com layout: SP's Newberg Branch in N scale
I will continue with my hump yard progress on a new topic "Hump yard" started Nov 16, 2000 by Conrailrad. It is no use for several topics with same content. ------ Helge SR&WF
Helgek, I have just spent the last two hours visiting your Family and your Rail Empire! It has been a delightful time. I especially enjoyed the music and your wife's artistic ablity. The cats must love all the cat litter!Ha! If you look on the "How To Tip" forum, you will see a method my father and I use to operate our uncoupling ramps, switches, and access hatches on our layouts. It should look familiar to you! We do it the same way!Ha. Works great, doesn't it? Thank you for a grand tour. I didn't sign in, but I will go back and do that. ------------------ Watash
Watash, thanks for your visit at both of ours sites. My wife especially liked the pic of you sleeping . About cats and cat litter. Ones one of our four cats sneaked into the railroad room without I seeing it. After a while I heard a noise and found the cat standing between the engine shed and the furniture company. He has not yet marked "his area". You can imagine how fast I reacted. Now it is absolutely forbidden for cats to entry that room. ----- Helge SR&WF I forget to tell that I looked at "How To Tip", and found some interesting tip. The fishing line example was a good one. [This message has been edited by HelgeK (edited 23 November 2000).]
