Interesting track laying discovery onto foam subroadbed

Interresting info. Brings a couple of questions to mind.

  1. If track on foam is noisier than track on plywood, does attaching the foam to plywood help deaden the sound?

  2. Has anyone tried attaching a plywood subroadbed on top of foam? Does it help reduce the noise?

Then I suppose one could always paint the cork with Krylon or Rustoleum textured paint, stick it down with laytex caulk and call it good.

Thank you,

Exacto knife. Been there, done that. I still use it for some things. The key is to use it sparingly. Don’t try to fill gaps with it.

Let us know what you find out Greg.
Maybe I’ll call a couple of fabric shops here and see if they know.

Ed

I have laid all my track (Peco) and roadbed (cork) on foam using caulk. I am very near the point of ballasting but have been aware of the noise problem using white glue etc. So I’ve hesitated (hmmm maybe procrastinated???). At any rate, before I begin I’m hoping someone will suggest a method that will minimize noise. Is there such a method out there?

I’ve read that matte medium is a better choice, but the old timers have used Elmers for years.

Joe

Hi Joe,
I’ve read that also.So is matte medium available at a crafts or art supply store?
There is a HOBBY LOBBY store in Ft Wayne that sales arts and crafts supplies, etc, and they also usually send me an email once a week with a discount coupon that can be used for anywhere from 15 to 40 percent off items in the store.
Is there anyone else out there reading these posts that has any knowledge or ideas to share???

Thanks guys!
Happy MRR’ing to all!

Ed

Ed,

Modge Podge is available at Michaels and I think that is what they are talking about. If I’m wrong we’ll surely hear about in in the next post or two! :slight_smile:

Joe

Ok, I was Hobby Lobby, and thought that I would check on the glue that they use to glue pieces of fabric together and is still flexable after it dries clear.

It’s called … Flexable Fabric Glue.

Go figure. It’s found in the fabric section near the bias tape and other sewless heming materials.

Hi Joe,

I was in a Walmart today and they had the Modge Podge glue also.I didn’t pick any up yet, thought I’d wait and see what comes up on this forum over the next few days.

Ed

Thanks Greg,
Next time I’m in Hobby Lobby, I’ll check it out.Did you notice what kind of thickness it is?

Or if it can be thinned out and used in a spray bottle, or an eye dropper?

Thanks

Ed

IIRC, it’s a little thicker than Elmers white glue, and it’s going to take some experaments to find out if it will thin - it does say that tool’s can be cleaned up with warm water and detergent.

I found out this little bit of information today, that may be of some use - Hoof glue does not become brittle when dry, it retains some flexability. The very thinned glue has been used on cordage ( such as bow strings ) to stiffen it and strenthen it.

Thanks Greg,

I think I’ll get some and experiment with it, and see how it thins out , if it even will, and test its adhesion properties also as it is thinned out.

Ed

Here is a different attack. My layout is built to be moveable (not portable) It is built of mostly 2’ x 8’ pieces of 2" blue foam. Each piece has a frame constructed of 1x4s under it. The cabeling and tortise switch machines are all installed so they do not stick down farther than the width of a 1x4, which is about 3 1/2 inches. I used WS foam roadbed on the mainlines with the spurs directly on the blue foam. I used Liquid Nails for Projects to stick the foam to the 1x4 frames, the roadbed to the foam and the track to the foam or roadbed as applicable. The ballast is WS fine grey and secured with the WS (Scenic Cement?) or what ever WS product is approriate. (I am at work, and I use alot of WS products so I get them mixed up sometimes. Perhaps it is age getting to me.) Just so you know the 2’ x 4’ foot sections are connected to each other by carriage bolts with doll pins for alllignment. The wires pass through holes drilled in the 1x4 frame and they are connected to barrier terminal blocks so they can be disconnected and pulled through if it is necessary to move the layout. I hope I never have to do that. BUT…

All this makes for pretty loud operations. My cure is 2’ x 4’ pieces of 1/4" paneling attached to the bottem of the layout with fiberglass insulation in the 3 1/2" dead space with all the switch machines and wireing. Be careful to leave room for the Tortises, but they are attached to a 3/4" thick piece of MDF about 6" square under the points of each switch. My layout is a fairly large 23’ x 20’ walk in L shape and my armpit fits just over the top of the layout, so it is relativly high. It is mostly 2’ wide against the two walls, and the 4’ wide where access it from both sides, so reach is no problem, and the finished look on the underside of the layout looks much better and the layout is much quiter. Of course on the top of the blue foam there is track, buildings, ground foam and other scenic elements, but the sound is not noti

It’s not so much the noise of model trains that I find irratating but the pitch - I can live with ‘Clank, Clack, Clunk, Rummmmbbbbel’ of prototypes - it’s the clicky, wrrrrr, russsshhh of the model that doesn’t sound right - like listening and expereancing the harmonics of finely tuned engines of a B17 fly by at only a couple hundred yards away[:D], and then having to put up with a little two cycle weed eater scream it’s head off [:(!].

Higher pitches also tend to be more penitrationg and appear to sound louder than they realy are, and it becomes it more irratating.

[quote user=“train18393”]

Here is a different attack. My layout is built to be moveable (not portable) It is built of mostly 2’ x 8’ pieces of 2" blue foam. Each piece has a frame constructed of 1x4s under it. The cabeling and tortise switch machines are all installed so they do not stick down farther than the width of a 1x4, which is about 3 1/2 inches. I used WS foam roadbed on the mainlines with the spurs directly on the blue foam. I used Liquid Nails for Projects to stick the foam to the 1x4 frames, the roadbed to the foam and the track to the foam or roadbed as applicable. The ballast is WS fine grey and secured with the WS (Scenic Cement?) or what ever WS product is approriate. (I am at work, and I use alot of WS products so I get them mixed up sometimes. Perhaps it is age getting to me.) Just so you know the 2’ x 4’ foot sections are connected to each other by carriage bolts with doll pins for alllignment. The wires pass through holes drilled in the 1x4 frame and they are connected to barrier terminal blocks so they can be disconnected and pulled through if it is necessary to move the layout. I hope I never have to do that. BUT…

All this makes for pretty loud operations. My cure is 2’ x 4’ pieces of 1/4" paneling attached to the bottem of the layout with fiberglass insulation in the 3 1/2" dead space with all the switch machines and wireing. Be careful to leave room for the Tortises, but they are attached to a 3/4" thick piece of MDF about 6" square under the points of each switch. My layout is a fairly large 23’ x 20’ walk in L shape and my armpit fits just over the top of the layout, so it is relativly high. It is mostly 2’ wide against the two walls, and the 4’ wide where access it from both sides, so reach is no problem, and the finished look on the underside of the layout looks much better and the layout is much quiter. Of course on the top of the blue foam there is track, buildings, ground foam and other scenic elements,

Ed,

The insulation is fiberglass with paper backing is just like goes into a wall. I cut squares to fit into the benchwork, with a cutout where a switch machine sticks out a little from the blue foam. I put the paper down against the thin paneling. I use small nails to attach the plywood to the bottem of the framework. You never know when you may need to remove the fiberglass and the panel to access for upgrades/maintenance, so do not use any kind of permanent attachment. Small screws would be great also. I would think about a #6 or #8 with a countersunk head (so there is nothing to put gashes in your noggin with) about 3/4" or 1" long.

The piece of paneling covers the entire bottem of the module, so It is usually 2’ x 8’. (I do not know why I said 2x4, I think the 4 was a typo.) Most of my modules are that size, but some are not as The sizes are made to fit into the available space, with 2x8 being the most commen.

So in a nutshell, pieces of wall insulation are put up into the recesses of the framework with the 2" blue foam on top and a sheet of panelling is attachedto the very bottem to hold the fiberglass up, and give the railroad a somewhat finished look.

There are also cut outs in the plywood for the legs to extend through in the places where necessary. Ducking under is no big deal as it is a high layout. If it were not so high I would have used the cheepest plywood I could have gotten for that task. Perhaps inexpensive sheets of masonite would be even be better as it is less resonate than plywood or perhaps an experiment with 2’ x 4’ sound deadning suspended ceiling tiles would be worth trying. I would think you could attach ceiling tiles with fender washers and screws.

So starting from the top you have roadbed, track, scenery, whatever, then 2" blue foam, then the 1x4 frame with the foam stuck directly to the top of that with Liquid nails for Projects. Tucked into the recesses of th

Hi Paul,

Thanks for the information.I now understand how you did it.I actually gave some thought to the idea of celing tiles before I read your latest post, thnking that between them and the fiberglass insulation, hardly any sound could resonate, and any that transferred through the 1x3 crosspieces, would be absorbed by the celing tiles.

My layout is high enough to easily roll around underneath on a small wheeled bench seat.The use of small woodscrews to attach the pieces holding the insualtion would be quite easy, and in the event of needing to do any undertable work, could easily be removed and set aside, plus giving a nice finsished look to the tables.
I am considering one other method also.On the bottom of my 1x3’s attaching pieces about 2 to 3 inches wide across the width of the table, with liquid nails, so the bottom will look something like an I’Beam, then on the bottom of these, attaching velcro strips, then velcro on whatever I attach the fiberglass to, and simply push them into place, and if need to remove for undertable work, they could easily be removed and reattached.
What do you think?

I noriginally designed my tables and layout this way, because I may move it from my basement to what is now my 3 car garage (attached) when I expand my 3 car garage further out, and place my garage doors to face the street instaed of being on the end of the house like they are now.The area that is now my garage, will be heated and cooled, and also give me the space to move much of my tablesaws, radial arm saw, band saw, etc into one side making my shop upstairs in one side of what is now my garage.
My tables can easily come apart, the legs removed, all the loose stuff on top taken off , tilted up on edge, and up the stairway and into the garage(later to become new train room, and alsp part of it a closed off workshop, giving me room downstairs to put a new family room with fireplace, big screen TV, etc, and making my future wife quite happy, giving her another room to

Acoustic ceiling panels primarily absorb the sound generated within the room they are located that impinges their surface. They are not so good at preventing sound transmission. They might help reduce some reverberant sound in the above location, but I wouldn’t count on it without an experiment.

ED,

If you had a flange to work with couldn’t you cut pieces of celing tile, plywood or whatever just a little bit wider than the distances between the flanges and then put the fiberglass bats in with a panel pushed all the way in above one flange, then put the other edge above the other flange and let gravity hold the thing in place. But that does sound like a good idea with the flanges on the 1x3s

I am leaving for school in Norman Oklaholma for a month on the 11th. I am not always quick to respond to these while I am at school. I work as an Electronics Tech for the USPS and every time we get a new piece of equipment I get sent to some school for awhile, usually on the outskirts of Norman OK, with limited transportation. I usually take craftsman car kits to build while there to occupy my time. So if I am slow to answer that is my excuse after the 11th. If you E-mail me I will get it sooner, but the bbs will work, but slower for me.

Paul

Dayton and Mad River RR