HCD for an N scale layout.

PRR1957 Oct 13, 2011

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  1. PRR1957

    PRR1957 TrainBoard Supporter

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    I'm told that the insulation actually amplifies sound instead of deadening it ... because your track is in direct contact with it, akin to wood and paneling ... sounds aren't as loud if separate from it, but strike a tuning fork and press it's base against the wood and it conducts, and even amplifies, the sound. I can understand this argument because I'm a finger-style guitarist (since 1969) playing an acoustic guitar. But it's been said to use cork as your roadbed on top of that for the actual sound deadening. The foam board is mostly used for allowing you to sculpt (for landscaping, making ponds, ditches, etc.) I'm almost positive someone else will chime in on what I just typed.
     
    Last edited: Aug 6, 2017
  2. Hardcoaler

    Hardcoaler TrainBoard Member

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    Hmmmm, very interesting. When I was young, my Dad placed a sheet of Homasote on top of the plywood. It appears to be made of compressed paper sheets, is dense and it also holds fasteners well. It's heavy though. I might see if Lowes or Home Depot carries it.

    Perhaps foamboard might work okay with Kato Unitrack because the ties and rails are held above the baseboard instead of directly upon it and the area under the rails and ties is open. This might reduce resonance.

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    Last edited: Aug 7, 2017
  3. Hardcoaler

    Hardcoaler TrainBoard Member

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    Ends up that Homasote must be special ordered in my area from an independent lumberyard. I find on Homasote's website that a 1/2 IN Sheet weighs 1.2 LBS/SqFt, which would add ~ 25 LBS to my largest table. That's not too bad, but if my HCD weighs 35 LBS, I'm at 60 LBS before anything else is added. I need to be conscious of total table weight because I plan to move someday.
     
    Last edited: Aug 7, 2017
  4. Point353

    Point353 TrainBoard Member

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    Have a look at the T-Trak layout that was set up as part of the Kato booth at the recent NMRA show.
    See photos 11-24 here: http://www.pbase.com/atsf_arizona/national_train_show_2017&page=all

    A layout that size can be set up on a standard folding banquet-type table.
    The modules are small, light and can be easily disconnected and moved.
    Kits are available for the basic modules, eliminating the need to do any woodworking.
    Would something like that appeal to you?
     
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  5. Hardcoaler

    Hardcoaler TrainBoard Member

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    Thanks Point353. That's some fine work there. I've bookmarked that T-Trak website to learn more. Again, thank you!
     
  6. BoxcabE50

    BoxcabE50 Staff Member TrainBoard Supporter

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    I have never encountered a situation where foam board amplifies sound. That is interesting to read. Hmmm. I have built T-Track modules using both Unitrack and old fashioned cork with Atlas flex atop it. Never noticed any differences or problems.
     
  7. Hardcoaler

    Hardcoaler TrainBoard Member

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    That's good to know Boxcab; thanks for your thoughts on this. I was looking at foam board at Home Depot yesterday and am impressed with it. The 9/16 IN thick sheets seem just right to me, solid and likely easy to cut. Thicker sheets are available, but are probably overkill in N Scale.
     
  8. Kriegwulfe

    Kriegwulfe New Member

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    I have started my N Scale HCD project on a 36" X 80 " door. I purchased a few 1" X 3" furring strips and mounted them as a border giving a bit of stand-off space for the bottom wiring and a rim for the top. I placed a 3/4" thick piece of insulation foam on top held down with cheap $2 a tube latex caulk. My elevations were layers of left-over blue foam again glues with latex caulk. I did have to use some Woodland Scenics incline/decline sets for my two grades, a 2% 80" long and a 4% grade 48" long. My track is KATO Unitrack complete using a NCE PowerCab DCC system.

    If PRR1957 is hitting a lick then I am more than happy for him. It may not be at the planned pace..but it is steps forward. These days time, effort, money, and availability all have to gel in one instant to get some projects off the ground. I am just happy to read yet another is off and running.
     
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  9. Hardcoaler

    Hardcoaler TrainBoard Member

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    Thank you as well Kreigwulfe -- your engineering mirrors what I am thinking of. The good news in these posts is that there are a lot of options for success. You are spot on with your statement about getting projects off the ground. I have a student who will soon be off to college, which will put a bit of a crimp in the hobby budget. Modelling the PC would match my future financial state. :D [Jade Green smiley]
     
    Last edited: Aug 8, 2017

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