with THAT diameter you could send in kids to retrieve derailed trains…
Korm Kormsen said:
with THAT diameter you could send in kids to retrieve derailed trains…
Well, that idea did cross my mind at the time, but now the kids have all grown - even my youngest niece is a teenager.
Eric if you are thinking of using clay chimney flue paint it or seal it some how. A large scalier hear in New England used one and in 2 years just crumbled. Just my opinion.
Richard
Richard Beverly said:
Eric if you are thinking of using clay chimney flue paint it or seal it some how. A large scalier hear in New England used one and in 2 years just crumbled. Just my opinion.
Richard
Good to know. I’ve considered using flue pipe as a tunnel liner under masonry stairs at my front door to allow me to expand along the front of the house. That plan has been very low to develop and was nixed last weekend when I repaired the steps once again with 250 pounds of concrete mix. I’d really rather build a wooden deck and get rid of the masonry steps, but then ground clearance becomes an issue bringing the trains underneath.
Well, this whole project has just gone back to the drawing board. I did some more detailed measurements, and determined that a pipe that I can’t relocate runs about 6" above where the bottom of the tunnel would be. I’m going to have to go through a different wall, and that one is wood. So that’ll be easy, but the outdoor routing will be more challenging. Thanks for all the advice. Hopefully someone else will benefit from the discussion down the road.
Richard Beverly said:
Eric if you are thinking of using clay chimney flue paint it or seal it some how. A large scalier hear in New England used one and in 2 years just crumbled. Just my opinion.
Richard
I guess that depends on the type of liner, amount of ground contact, moisture and who knows what else. We have 3 of them set vertically in our front flower bed, as small planter boxes. They have been there, with their bottoms buried in the ground, full of soil and plants, for several years now, and they are still quite solid.
Richard Beverly said:
Eric if you are thinking of using clay chimney flue paint it or seal it some how. A large scalier hear in New England used one and in 2 years just crumbled. Just my opinion.
Richard
That one wasn’t fired. Chimney flue has to handle acids, heat, etc., so it is cooked terracotta type. I used a 9" ID flue (3 x 2’ pieces) in my garden in Maryland, near the water where it was always wet and had no problems with it.
“Tunnel tube minimum diameter” topic heading was initially registered by my brain as Tunnel tube minimum disaster. (http://largescalecentral.com/externals/tinymce/plugins/emoticons/img/smiley-laughing.gif)That too would make an interesting thread but railroading life would probably be happier without it, ya know.
The ones I have seen were all fired… hard to believe someone would sell unfired flues for a chimney… hmm…
Greg
Clearly anyone that has quoted me has not experienced the New England freeze and thaw, freeze and thaw, that is why i said NEW ENGLAND and the last i know Me. was part of New England. This was a fired flu. I know another G scaler that uses freeze thaw to crack large rocks into small rocks.
Richard
Well, if using the tile flue, which the ones I have seen are clay based, it surely could not harm anything to saturate it with sealer, would be cheap insurance, compared to the cost and labor involved.
Greg
Richard Beverly said:
Clearly anyone that has quoted me has not experienced the New England freeze and thaw, freeze and thaw, that is why i said NEW ENGLAND and the last i know Me. was part of New England. This was a fired flu. I know another G scaler that uses freeze thaw to crack large rocks into small rocks.
Richard
For sure Richard. Even reinforced concrete can disintegrate over time here in New England. All it takes is a small crack for water intrusion. I’ve re-poured my front steps with concrete twice since we moved here in 1990. Ice melter doesn’t help, but that is a necessity too unless you enjoy cracking your skull on the concrete. I use concrete stepping stones as weights on my boat cover. They are pretty porous and only last two seasons or so before they crumble.
That why I use the lasted rage in drainage… (http://largescalecentral.com/externals/tinymce/plugins/emoticons/img/smiley-wink.gif)
Sean McGillicuddy said:
That why I use the lasted rage in drainage… (http://largescalecentral.com/externals/tinymce/plugins/emoticons/img/smiley-wink.gif)
Yeah Sean that is what I have, but the stuff I have has a smooth liner grandson could crawl thru it.
Richard
One advantage of the flue liner, is that being available in a rectangular shape, it’s more optimized for trains, you could use a 12" flue pipe that was 6" wide if space was a concern, a perfectly round tube would need 14" or more because of the curve on top and whatever base you use to make the bottom flat… the track cannot sit exactly in the bottom.
Of course these are only distinctions when space is tight, or you don’t care you are excavating a ditch twice as wide…
Greg
Todd Haskins said:
I have 3 tunnels on the RR where I used 12x12 flue liners. They come in 2’ long sections. I have another where I used a length of black corrugated pipe. There is a spot on the RR that goes under our addition and it is pretty tight under there but I can crawl in if needed. I put together PT 2x4 to form a “T” beam and it has held up well for 10 years now.
Here is a youtube link to one of my videos that might inspire you a bit.
https://www.youtube.com/watch?v=G_fPQ0LlKhU&t=190s
Even if you are planning on modelling in 1:29 you will want to overbuild for additional clearance. I have a lift out girder bridge that was built to fit my widest train and it was all good until a friend brought over his large Bachmann loco and guess what, it didn’t fit.
Steve is so correct in saying that you need to make sure you can reach into a tunnel because if something bad is going to happen it will happen out of your reach ! LOL
You have an awesome layout. Any chance you know someone with a drone that could take an aria view of the whole layout?