Page 1 of 3 123 LastLast
Results 1 to 10 of 23

Thread: Scratch building a wood trestle in N scale.....

  1. #1
    Join Date
    Mar 2008
    Location
    Spring Hill, Florida.
    Posts
    3,366

    Default Scratch building a wood trestle in N scale.....

    Well I have been kicking around what bridge type to use on my display layout. I have decided on a wood trestle type! I lookd at all the diffrent kits out there for a 11" radius curved bridge. I decided to make my own rather than buy a kit, this is my first wood structure. I made a Gig for the bents and made a rough draft. heres my first bent ever built for those of you with week stomachs don't look

    It looks pretty close to all the bridges I have seen. Question the span will be between 160 scale foot to 200 scale foot. How many bents and how far apart sounds right?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	100_4508.JPG 
Views:	560 
Size:	106.6 KB 
ID:	14248   Click image for larger version. 

Name:	100_4509.JPG 
Views:	528 
Size:	90.4 KB 
ID:	14249  
    Chris Hanson
    The Grass is always GREENER on the otherside of the tracks! Trust Me, I Know!...........I Mowed over there yesterday!

    Pasco County BoCC Parks and Recreation Park and Lowes Lawn and Garden Center.
    Spring Hill, Florida.
    My Photo Album: http://www.modelrailroadforums.com/f...php?albumid=33

    My Facebook page: http://www.facebook.com/profile.php?...ll&ref=profile

  2. #2

    Default

    That's a pretty nice looking trestle bent, Chris. Nothing to be ashamed of there. If the bents will be the only support for the trestle, they'll need to be quite close together, probably no more than the length of an F unit apart. Timber trestles that tall were pretty shaky and not all that strong. You'll need to add longitudinal stiffeners to each cross brace on the bents as you attach the bents together and to the track deck. You''ll also need to plan for concrete footings for each leg of the bent. You can use seom square styrene stock for this but you'll find you'll need to cut a bunch of them for a trestle that size.
    Regards, Jim
    _______________
    HO Scale Modeler

  3. #3
    Join Date
    Mar 2008
    Location
    Spring Hill, Florida.
    Posts
    3,366

    Default

    I have been thinking of One bent every 20'-30' and yes, I do plan on cross members hung from bent to bent to stiffen thinks up some so the train crews can turn down the pucker factor some!
    Chris Hanson
    The Grass is always GREENER on the otherside of the tracks! Trust Me, I Know!...........I Mowed over there yesterday!

    Pasco County BoCC Parks and Recreation Park and Lowes Lawn and Garden Center.
    Spring Hill, Florida.
    My Photo Album: http://www.modelrailroadforums.com/f...php?albumid=33

    My Facebook page: http://www.facebook.com/profile.php?...ll&ref=profile

  4. #4

    Default

    Chris, one thing I found out about trestle building during my research is there aren't any two trestles alike. Where some railroads had minimum standards and a general design, most trestles where overbuilt for strength. The most common reason of this was local carpenters and construction crews were the ones doing the work and much of the design was on site and on the go. i.e, don't worry about rivet counters trying to say something is wrong. Stick with a general design with the right supports and you got it right.

    I don't know if you want to fool with the itty bitty NBW (nut/bolt/washer) pins but they do add a lot of detail. This is tweezer work requiring a pilot hole, CA glue, and dipping each NBW in glue and inserting them. A real PITA but nice results.
    REX
    Blue Creek & Warrior Railways (circu 1950's)
    "Connecting the South"


    Click--> Sorry, Coming soon!

  5. #5

    Default

    Plus, dont forget about safety decks and fire water barrel decks. Wood trestles were always catching of fire in steam days so most had water barrels every 25 feet or so. The safety decks were for track workers to duck out on if they were doing track work and a train came by. Those nut and bolt washers would look cool but doing them in N scale would probably ruin what little eyesight I have left.
    Regards, Jim
    _______________
    HO Scale Modeler

  6. #6

    Default

    OOPS! N-scale...Nope you don't want to do NBWs unless you have a microscope LOL

    (that reminds me: I still haven't added my water barrels. Hmmm, I must make another note of that)
    REX
    Blue Creek & Warrior Railways (circu 1950's)
    "Connecting the South"


    Click--> Sorry, Coming soon!

  7. #7
    Join Date
    Mar 2008
    Location
    Spring Hill, Florida.
    Posts
    3,366

    Default

    Yes I got plans fer the deck and barrels. Rex after looking at tons of trestles your right no two are alike. I figured my bridge will contain about 14 bents at 20' spacing and verious lengths......I got to save up for the rest of the track fer the layout and Then I can attack this monster!
    Chris Hanson
    The Grass is always GREENER on the otherside of the tracks! Trust Me, I Know!...........I Mowed over there yesterday!

    Pasco County BoCC Parks and Recreation Park and Lowes Lawn and Garden Center.
    Spring Hill, Florida.
    My Photo Album: http://www.modelrailroadforums.com/f...php?albumid=33

    My Facebook page: http://www.facebook.com/profile.php?...ll&ref=profile

  8. #8

    Default

    Chris, that looks pretty cool! Do you have plans you are working from or are you just making this up as you go? If you are using plans where did you get them?
    Tony - New to the hobby

    Thinking about Freelancing the PRR, Reading, & B&O...& possibly some Western Maryland

    Stoogetopia

  9. #9
    Join Date
    Mar 2008
    Location
    Spring Hill, Florida.
    Posts
    3,366

    Default

    Quote Originally Posted by Screwjack View Post
    Chris, that looks pretty cool! Do you have plans you are working from or are you just making this up as you go? If you are using plans where did you get them?
    No plans Just looked at a few diffrent types of trestles, and just build it to fit! Just like the real railroads! It's actually easier than it looks just time consuming Just make a gig for your bents and go man go!
    Chris Hanson
    The Grass is always GREENER on the otherside of the tracks! Trust Me, I Know!...........I Mowed over there yesterday!

    Pasco County BoCC Parks and Recreation Park and Lowes Lawn and Garden Center.
    Spring Hill, Florida.
    My Photo Album: http://www.modelrailroadforums.com/f...php?albumid=33

    My Facebook page: http://www.facebook.com/profile.php?...ll&ref=profile

  10. Default

    Bent frame trestles builders generally spaced the bents about 15-16' apart.

    You'll find a lot of useful information here, including how to lay a curved deck.

    http://members.cox.net/sn3nut/trestles%20part%201.htm

    -Crandell

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •