Radii on your layout.

What is the smallest radius on your layout?

286mm - 11.26" (standard BTTB for example)
2
17%
310mm - 12.2" (standard Tillig for example)
1
8%
353mm - 13.9" (standard Tillig for example)
3
25%
396mm - 15.6" (standard Tillig for example)
3
25%
Bigger or smaller than the above
3
25%
 
Total votes : 12

Radii on your layout.

Postby ConducTTor » Tue Jul 27, 2010 4:20 pm

When coming up with designs for new models (like the Society's GP-38 or the SD45 or my own wagons or whatever may be coming down the road), an important factor is the turn radius. It would be useful to have an understanding of what people use.

So, what is the smallest radius on your layout? Regardless of whether the restriction is space or turnout radius.
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Re: Radii on your layout.

Postby CSD » Tue Jul 27, 2010 6:29 pm

631mm.
Mark
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Re: Radii on your layout.

Postby AstroGoat760 » Tue Jul 27, 2010 6:53 pm

286mm, as we still have a lot of BTTB, and BTTB track is used on our portable layout.
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Re: Radii on your layout.

Postby areibel » Tue Jul 27, 2010 7:10 pm

CSD wrote:631mm.


Dang! I'm jealous!
Mine are about 17", but that's just a test loop on a piece of foam. It handles all
the bigger locomotives I have and the longer rolling stock doesn't look like a
Lionel O27 set running onder a Christmas tree.
I'm hoping for 22" minimum on my permanent layout, when it gets built.
Al
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Re: Radii on your layout.

Postby ctxmf74 » Wed Jul 28, 2010 12:07 pm

My new harbor side switching layout has 18 inch with one 15 inch into a small industrial area. These correspond to 25" and 21"in HO which are pretty common. An 18 inch TT radius equates to 180 feet on a real railroad which is feasible for industrial trackage as the Harlem Transfer terminal had 90 foot minimum radius.....dave
here's photo, the hoppers are on the 18inch radius mock up into the coal yard. The loco and caboose are in the yard the team track is beyond the hoppers.
Image
Last edited by ctxmf74 on Thu Jul 29, 2010 1:51 am, edited 3 times in total.
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Re: Radii on your layout.

Postby CSD » Wed Jul 28, 2010 1:52 pm

areibel wrote:Dang! I'm jealous!...
Al


I went with minimum EW2 turnouts, which have a 631mm radius on the curved leg, and just carried over that to set my standards. Having a point to point layout makes the larger radii easier to achieve.
Mark
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Re: Radii on your layout.

Postby CaTTwoman281 » Thu Jul 29, 2010 10:32 pm

It looks like the minimum for our North American proto mainlines will be 353mm, due to the module standards, although some industrial areas will be less, and those will be the domain of Lindsey (our Lindsay 0-4-0T) and our PVM 25T four-wheelers.
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