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" RADIUS CURVES FOR N SCALE LOCOS"

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  • Member since
    December 2005
  • From: west of Portland Oreg.( the city of Roses
  • 557 posts
" RADIUS CURVES FOR N SCALE LOCOS"
Posted by TrainsRMe1 on Friday, September 17, 2021 11:45 PM

 Hey All,                                                                                                                      I"m curious I will be running a modren era loco's on my layout, they all will be six axel locos and one steam loco the UP Big Boy, the question I have is, what's the smallest radius I can go before I start have problems with derailments??                            Thanks for the help

  • Member since
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  • From: A Comfy Cave, New Zealand
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Posted by "JaBear" on Saturday, September 18, 2021 12:44 AM
From the Athearn N scale Big Boy brochure. “Pivoting front and rear engines for negotiating 11” radius curves -15” radius curves recommended.
 
I would suggest that the Big Boy will set the radius for the diesels.
 
Cheers, the Bear.Smile

"One difference between pessimists and optimists is that while pessimists are more often right, optimists have far more fun."

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  • Member since
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  • From: Northeast OH
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Posted by tstage on Saturday, September 18, 2021 3:19 PM

TRM1,

I would look at it another way: What's the largest radii curve you can fit on your mainline for a 4-8-8-4?  I would then strive to maximize your curves rather than minimize them - even if it means less trackage.  It will look and operate better.

Tom

https://tstage9.wixsite.com/nyc-modeling

Time...It marches on...without ever turning around to see if anyone is even keeping in step.

  • Member since
    October 2018
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Posted by Bigjim7 on Tuesday, September 21, 2021 10:12 AM
I would not let one Loco or engine determine my radius or layout design even if I had to not use the Big Boy,
  • Member since
    February 2002
  • From: Mpls/St.Paul
  • 12,413 posts
Posted by wjstix on Wednesday, September 22, 2021 4:40 PM

If you already have the engines, I would do a 'real world' test by getting Kato Unitrack sections in different curve radii and a power track and try running the engines thru them. The manufacturer's minimum radius info is usually correct, but I like to try it out to be sure.

Stix

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