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Old 15-07-2018, 09:06 PM   #11
Walkingthedog
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If you go down the DCC non sound or DC route there is no need for soundproofing either.
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Old 16-07-2018, 12:43 PM   #12
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Forgive my ignorance, but if the layout is a light railway / tramway, surely the locos will be going slowly enough that soundproofing wouldn't be needed anyway? It's not like you'll have express trains roaring along.

Something else to remember with foam is that it doesn't hold track pins very well. They'll go in really easily, but they'll also come out really easily. If you're using thin enough foam that the pin will go through to the wood underneath you should be fine, although of course (my comment above aside) you'll then be transferring any vibrations from the track to the wooden board underneath and will get more sound than if it were just vibrating the foam.
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Old 16-07-2018, 02:04 PM   #13
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The method Dave's Model Railway suggests is not to use track pins at all - just brush the sleepers underneath with Copydex and press the track down.
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Old 16-07-2018, 03:00 PM   #14
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Track pins mean you can move the track if necessary and sometimes itís just a few mm. It gets stuck down when all is well and the ballast is added.
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Old 16-07-2018, 08:30 PM   #15
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On the latest Everard Junction layout, the track is stuck down using Copydex on a 3-4mm thick cork underlay.
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Old 16-07-2018, 10:19 PM   #16
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I'm reluctant to stick permanently to anything as I know I will want to change it quickly no matter how much I like it NOW! My layout, like many here, is an evolving beast and will never be finished.

I'm currently screwing track on the edges to the bases board to fix them in position, much as people do with pins on flexi track. It seems to be working so far. I've also used screw in the centre of the track but that causes a problem with a few locos and their couplings so they're being moved to the outer edges of the tracks. (I use set-track pieces at present.)
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Old 17-07-2018, 08:07 AM   #17
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I pinned then ballasted when everything ran well. I could have then pulled out the pins but I didn't. Next time I will. I have just removed a short length of track/siding as I am extending onto another board - I sprayed the old track/ballast with warm water, waited a couple of minutes and the track could be taken up no problem.
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Old 17-07-2018, 08:30 AM   #18
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Same method as me Michael. I could have removed the pins but canít find them.
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Old 17-07-2018, 02:34 PM   #19
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For temporary fixing, I've used drawing pins pushed in so as their head spans two adjacent sleepers or holds just the one sleeper!
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Old 17-07-2018, 09:00 PM   #20
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Quote:
Originally Posted by Steam Train Dave View Post
Timbersurf your comment that no ballast touches the ply suggests that you may have covered all your baseboard's surface with closed cell foam and everything is on top of that - would I be correct in that assumption?
You are correct, the theory is not to "reconnect" the track mechanically (no pins, no touching ballast to base, etc)



I did a huge amount of research on the net, including vids of actual tests on test beds with each method. The conclusion is that my adopted method gives the best results. But be warned, there are quite a few other theories out there (with some merit) about adding mass. Things like adding rigidity directly underneath the track with 2x1 batons glued to the underside. Similarly, track layout outside on concrete is whisper quiet! Hornby's foam underlay is soft and should disconnect the track from the board, but achieves the opposite effect, by allowing the track to resonate at higher frequencies which makes it be perceived to be louder!
I can speak from experience with 6mm ply, that all my efforts seem to have been in vain, my layout is very loud when trains are at full tilt, but I think that may be a lot to do with the fact I have little support underneath, meaning that 2ft square unsupported board acts like a drum skin!

The worst generator of noise is having metal shod wheels! (not that I am advocating going back to plastic ones). At best all of these techniques will attenuate (reduce) noise but not will eliminate it.


There is no "Golden Bullet" solution I am afraid.
The best you can do is to experiment yourself and take on board some of the principles from above
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