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How to build a duckunder that won't kill anyone!

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  • Member since
    February 2004
  • From: Mile 7.5 Laggan Sub., Great White North
  • 4,201 posts
How to build a duckunder that won't kill anyone!
Posted by trainboyH16-44 on Thursday, April 23, 2015 7:42 PM

Bit of a cop-out, posting a link to my blog like this, but I need run!

This is my duckunder. Click the image to see what I did to make it injury-proof.

Go here for my rail shots! http://www.railpictures.net/showphotos.php?userid=9296

Building the CPR Kootenay division in N scale, blog here: http://kootenaymodelrailway.wordpress.com/

  • Member since
    January 2015
  • From: Kenner, LA
  • 124 posts
Posted by KEN MASON on Thursday, April 23, 2015 8:49 PM

Super. I did the same thing on one end section of our layout where my wife has a bean bag chair and an Ott light to do her cross-stitching under the layout while I work on the layout above. We call it her "girl cave". 

  • Member since
    July 2004
  • From: Weymouth, Ma.
  • 5,199 posts
Posted by bogp40 on Friday, April 24, 2015 6:06 PM

Yes a very good idea. And it will help to stop THIS!  Ouch!

Modeling B&O- Chessie  Bob K.  www.ssmrc.org

  • Member since
    December 2011
  • From: Northern Minnesota
  • 2,774 posts
Posted by NP2626 on Saturday, April 25, 2015 5:58 AM

Funny thing about Duck Unders, I built mine, when I was 38-39 years old and it seemed easy enough back then.  However, now that I am 65, I don't feel quite the same about it!

NP 2626 "Northern Pacific, really terrific"

Northern Pacific Railway Historical Association:  http://www.nprha.org/

  • Member since
    July 2004
  • From: Weymouth, Ma.
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Posted by bogp40 on Saturday, April 25, 2015 10:17 AM

NP2626

Funny thing about Duck Unders, I built mine, when I was 38-39 years old and it seemed easy enough back then.  However, now that I am 65, I don't feel quite the same about it!

 

I hear you, as a carpenter ladders/ staging, stairs and all sorts of crawling around used to be "easy". Now I'm not much behind you at 62, the body just doesn't like a physical day anymore. I just let those young Bucks take it on, I'll stick to the finish work! Duck unders? maybe easy getting down, but where's that crane to get up.

Modeling B&O- Chessie  Bob K.  www.ssmrc.org

  • Member since
    July 2006
  • 685 posts
Posted by Howard Zane on Saturday, April 25, 2015 10:32 AM

There is probably a mathematical formula depicting how duck-unders get lower each year.

My original pike had two duck-unders at 52" from the floor. I began layout when I was 42 which then was fine, but later on in 2006, I completely redesigned and rebuilt area removing both of them. Then at age 68 I could still bend fairly well, but visitors??? One incident was main reason for tearing them down.....

Enter "Sir Cumference", a vistor well endowed with an 86" waist line and close to 475 pounds  buck naked (what a thought!). I was in another part of layout when appearently he was advised to go to ramming speed to successfully navigate duck-under #1. Well it didn't go well for him or the layout, as after an hour of no less then four of us trying to extricate him (two pulling and two shoving on the caboose), we had to go drastic. The duckunder was lined with 1/4" Masonite  sides attacthed to vertical supports. We had a choice to either cut the 2.5 foot section above the duck-under, or somehow remove sides and supports. By this time, Sir Cumference was in pain, so out came the sabre saw.

The following day, several model railroad buddies came over with really big saws and pick-ups, and this 700 square foot section of the Piermont Division became history. Those who have visited my layout since and have my book...."My Life With Model Trains" notice immediately that something is different, as the re-do took place just after book was published.

Point......simple, just don't design layout with duck-unders. It can be done!!!!

HZ

Sir Cumference passed away last year, but he had lost damn near 100 pounds....just not soon enough! He was a fine fellow and his nick name was self inflicted.

 

Howard Zane
  • Member since
    June 2007
  • 8,864 posts
Posted by riogrande5761 on Sunday, April 26, 2015 8:57 AM

I was naughty and built my layout with a duck under, but it's a small 10x18 foot room and around the walls - too complex for a lift out.  But since the floor has carpet, its easy on the knees to crawl under.  Hopefully in a few years I'll be able to move to a house with a little more room for a layout and do it properly like some of you.  In the mean time, the suggestion from the OP looks like a good way to cushion the blow when getting up too soon before clearing the benchwork!

Rio Grande.  The Action Road  - Focus 1977-1983

  • Member since
    August 2013
  • From: Richmond, VA
  • 1,890 posts
Posted by carl425 on Sunday, April 26, 2015 10:37 AM

IMO, it is too easy to build a lift up/out or a swinging gate to have to deal with duckunders.  If I had to have a duckunder, I'd keep a stool with wheels nearby and make it a roll under.

I have the right to remain silent.  By posting here I have given up that right and accept that anything I say can and will be used as evidence to critique me.

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