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Maths genius help and concrete

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  • Member since
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  • From: West Australia
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Maths genius help and concrete
Posted by John Busby on Saturday, June 4, 2005 4:56 AM
Hi all
Two questions
1 what is the diference as a % between US "O" scale and 1/19 why would I want to know this in a Classic Toy Trains mag I have is a loco shed and I want to know how much to blow up the drawing to get it to the right size for what I want.
also
2 is any on familliar with concrete casting for garden railway structures
and can tell me how to go about it a large ruind Cathedral seems like a good idea.
regards John
  • Member since
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  • From: Rockville, Maryland
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Posted by van buren s l on Saturday, June 4, 2005 6:16 AM
John
Sometime over the past couple of years Peter Jones had an article in Garden Railways about a ruined abbey that he built of concrete. He gave a pretty detailed account of the construction. If you wish, I can dig through my back issues and let you know which one has the article.
Regards
Bob
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  • From: West Australia
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Posted by John Busby on Saturday, June 4, 2005 7:25 AM
Originally posted by vbsltco

John
Sometime over the past couple of years Peter Jones had an article in Garden Railways about a ruined abbey that he built of concrete. He gave a pretty detailed account of the construction. If you wish, I can dig through my back issues and let you know which one has the article.
Regards
Bob

Hi Bob that would be handy if you can find it I dont think I have that one
but knowing the date a friend of mine can probably track it down
regards John
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Posted by RhB_HJ on Saturday, June 4, 2005 8:35 AM
Hi John.

US "O" scale = 1/48

48:19=2.52

Enlarge your drawing by 252%.
Cheers HJ http://www.rhb-grischun.ca/ http://www.easternmountainmodels.com
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Posted by van buren s l on Saturday, June 4, 2005 9:27 AM
John
The article is in the August 2003 issue. The article inspired me to go measure the ruins of an old stone cutting mill not far from my house. Unfortunately, the ruins in 1/29 scale measured about six by three feet. The project would have overwhelmed my railway as well as my wife and me.
Good luck
Bob
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  • From: Northwest Montana
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Posted by Rastun on Saturday, June 4, 2005 10:41 AM
John,

For the concrete building especially in the old stone cathedral idea I would probably look into http://www.jigstones.com/ Thier patter set PPK-1 has plans in it for a chapel. Look around and explore thier site a bit some really neat looking buildings in the gallery section.

Take care,
Jack
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Posted by John Busby on Sunday, June 5, 2005 8:50 AM
Hi RhB_HJ
Thanks for figures
Hi Ratsun a translation into English as to what they are casting would be handy.
I note they spesificaly say not to use cement products which could be a problem
Cement would weather nicely
regards John
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Posted by Anonymous on Sunday, June 5, 2005 9:23 AM
John- Iandor makes loads of cement/concrete things with the jigstones moulds.
Have a word with him about it.
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  • From: Northwest Montana
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Posted by Rastun on Sunday, June 5, 2005 9:28 AM
John,

Try this page http://www.jigstones.com/images/PDFmaterials.pdf Basically from what I understand you want to look for concrete items that are packages in anything but bags. That page should give you a few ideas and read the discriptions of each because some items are really not made to go outside. At the bottom of that page they do give a listing of the specific items not to use. Iandor uses this system it is what his viaduct and the little tombstones are made from.

Take care,
Jack
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  • From: West Australia
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Posted by John Busby on Sunday, June 5, 2005 9:51 AM
Hi Ratsun
The reason I asked for Engli***ranslation.
Is the list is as far as I can tell all US product Brand names, I need the English Or Australian product Brand names So I can see if I can get the stuff to cast in the moulds
regards John
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Posted by Anonymous on Wednesday, June 8, 2005 7:35 PM
John I cannot agree to what you are taliking about to do with scale, this rivet counting in my opinion takes all the fun out of it. If it looks good then go with it I say, if it doesn't don't.

However on casting concrete, i am a virtual authority on the subject, and my wife Doreen knows a bit more than i do.

We have sevral thousand bricks in arches, pylons, portals, bridges etc in our layout, as we bought a "Jigstones kit.

Have you seen my 5 m long viaduct, made out of concrete blocks?


Send me an email and i will send you some pics.


Rgds Ian

Better still why don't you hop over and have a look; a trip to Queensland Sunshine Coast never hurt anyone.
  • Member since
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Posted by John Busby on Thursday, June 9, 2005 5:17 AM
Hi iandor
I have Two locomotives of a known scale and a locomotive shed drawing of a different Known scale, if you want one to fit in the other it helps a lot if they are the same nominal scale there is a big diference between scale and rivet counting..
You have reminded me of what a friend of mine did, deliberatly picking a specific locomotive because it had a different no of rivets on one side of the tender to the other, he then built it to annoy the rivet counters who said that's not right when it was..
I dont think a 16mm scale locomotive will fit in a US "O" scale locomotive shed some how no mater how much I want it to.
the shed was chosen because I like the look of it and with a tin roof it will look the part ERR!! I hope and not be too big
Would love to come over and see your line liked QLD last time I visited
so will bear it in mind for my long service leave.[:D]
regards John
PS will be in touch in due course
My Email should be on the LGB club list If You are still a member
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Posted by RhB_HJ on Thursday, June 9, 2005 7:02 AM
Hi John,

You got that right!

Ask anyone who tried to make some of the 1:20.3 stuff negotiate the 1:22.5 clearances on their layout.
Interestingly this includes some LGB fans who just had to have the Saxon Meyer engine and then found out that the rear truck assembly is scaled approx. 1:17 with the corresponding overhang and a real snag-ability.[;)][}:)][:)][:D][:D]

On those "rivets"; those guys couldn't have been "real rivet counters" or they would have know that the particular proto had two dissimilar sides.[;)][:I][:I][:D]
Cheers HJ http://www.rhb-grischun.ca/ http://www.easternmountainmodels.com
  • Member since
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  • From: West Australia
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Posted by John Busby on Thursday, June 9, 2005 8:39 AM
Hi RhB_HJ
My friend deliberatly chose the class member of the locomotive class because it was the odd one out
His pet hate is rivet counters and critics who critisize just because they can.
He feels encouragement works better.
regards John

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