Home Open Account Help 253 users online

Model Railroading > largest radius curve on 5 X 9 ho layout


Date: 09/10/20 06:52
largest radius curve on 5 X 9 ho layout
Author: bluesboyst

Anyone know the largest radius curve I can have on a 5' X 9' HO layout?  

Thanks



Date: 09/10/20 06:57
Re: largest radius curve on 5 X 9 ho layout
Author: Rmosele

Math is your friend: 5 ft X 12 in = 60 in. less 2 in. assuming you want to have at least an inch from the outside rail to the edge of the layout on each side leaves you 58 inches for trackwork to make a half circle. Divided by 2 = 29 inch radius.



Date: 09/10/20 07:08
Re: largest radius curve on 5 X 9 ho layout
Author: bluesboyst

Thanks....



Date: 09/10/20 09:50
Re: largest radius curve on 5 X 9 ho layout
Author: ts1457

Rmosele Wrote:
-------------------------------------------------------
> Math is your friend: 5 ft X 12 in = 60 in. less 2
> in. assuming you want to have at least an inch
> from the outside rail to the edge of the layout on
> each side leaves you 58 inches for trackwork to
> make a half circle. Divided by 2 = 29 inch radius.

I always assumed that the radius was measured from the track centerline. Have I been wrong for years?



Date: 09/10/20 09:56
Re: largest radius curve on 5 X 9 ho layout
Author: jimleighty

Actually, it would be a maximum 28" radius (to the center of the track) if you want to keep the track edge 1" in from the edge of the layout. I am allowing a 2" ROW width, not just track tie width.

Jim



Date: 09/10/20 10:03
Re: largest radius curve on 5 X 9 ho layout
Author: jsnoy

If you can, try to expand the layout so that the mainline would be 30".  I have found that operations seemed much, much less troublesome after I moved to 30" (and #6 turnouts).  I had trouble with 24, 26 and 28 inch radii when running long wheel-base locos and rolling stock.  GP locos don't seem to mind tight radii.  Passenger cars and autoracks get finicky on tight radii.



[ Share Thread on Facebook ] [ Search ] [ Start a New Thread ] [ Back to Thread List ] [ <Newer ] [ Older> ] 
Page created in 0.0182 seconds