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CRAZY Bridge Of The Day !
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 Posted: Sun May 5th, 2019 02:55 pm
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Si.
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" Strange, for a re-release they changed it from 1/72 to 1/76  :)  [whack] :doh: "



Hi Cor  :wave:



Yes ... Very weird ?  L:



1:72 is, I think, the model-plane scale my friend Pat likes. 

&

1:76 is OO model-train scale ... Right ? 

(Geez, I should check my 'facts' before Posting !)  ;)



Anyone know how come we have TWO scales like these, really close together ?  L:

It aint exactly the only example of this of course.  :P



Def. 'weird' on the part of 'Airfix' though.  :Crazy:



:dt:



Si.




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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Mon May 6th, 2019 03:25 pm
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corv8
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Alwin wrote:
And why did they use ballast on the bridge?
The extra weight makes that the construction has to be extra heavy too.
There other solutions for that.


I understand that this is the way to go today.

A non ballasted bridge will cause a "dip" in the roadbed before and after the bridge,
because the ballast will settle and the steel or concrete bridge doesnt.

This may cause a high powered loco to slip its drivers momentarily,
and then cause stresses on the drive components when she grips the rails again.


Gerold


.... just noticed I commented to a very old message ....
anyway, maybe its still of interest.




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Gerold
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 Posted: Sat Aug 29th, 2020 07:01 am
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John Teall
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Bit of history on long ravine bridge(s) about a mile east of Colfax.

I grew up in Colfax,
and was living there when they built the freeway (I-80).

If you look at the other bridge and to either side of the piggy backing,
you see it's supported on these latice-work iron bents.

And while the NCNG had snaked through between them just fine,
the one on the closer bridge, was right smack in the middle of the way,
to put the freeway through under it.

So that support span,
replaced where the bent, that had been in the way, was.


Now the curve in the Opher bridge, west of Auburn.
 
The curve was there before the bridge so to speak,
and again, the piggy-backing, was a matter of creating a wider free span.

Auburn California is where I graduated highschool in 1966.
 
It was in '62 that the freeway was completed through Colfax.
Before that US-40 had been the main highway.




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themnax
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 Posted: Sun Sep 26th, 2021 01:34 am
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Si.
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I think I was looking to buy a CD, or some winter gloves, on eBay ...

... & yer know how it goes.  :P

;)

eBay :- "People who bought CDs & winter gloves ...

... also shopped for rusty ol' WWII folding-bridges"

:Crazy:










They want £5K BRITISH for it, but are open to offers !  :us:

Collection in person, is FREE !

Interested ?  ???

L:

Michaels wife, in a couple of years time :-

"About that folding WWII bridge in the garage !"  :java: :cool: [whack]

:doh:




____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Sun Sep 26th, 2021 08:11 am
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corv8
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Ahhh´.... love this.

Reminds me of farmers in the USA,
using surplus flatcars as bridges over their creeks...

Or certain cash strapped RRS burying old cars
(both automobiles and RR cars)
along riverbanks to slow erosion...

This all needs to be modeled.




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Gerold
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