Hey guys, what is the smallest radius that one would want to run on n scale. I need to set up a layout on maybe a 4x6 for my grandson and he will want as much track, sidings, turnouts etc, as i can put on it. thanks, david
It really depends on the equipment you plan to run. If you want to run large steam or modern 6 axle loco's, the absolute minimum is 11 1/4" but most will recomend somewhere around 14".
I have built layouts with as small as 6"R but they were built with specific equipment in mind.
If you want to be able to utilize the greatest variety of locomotives and rolling stock a minimum radius of around 15" or so will allow you to use most items.
Hi rookie,
IMO
11.25r is a good minimum, but its tight on the main.
Go 15r + wherever possible.
For really tight sidings, yards, etc., my absolute minimum is 9r.
Have a look here for some layout ideas;
http://www.carendt.us/index.html
...and here for transitions (a good read)
http://www.trackplanning.com/easements.htm
Good Luck
Edit; fixed link
Rookie,
I'm a grandpa too, but I'm running my own N scale layout (used to be in HO a long time ago). I'm running Bachmann's EZ track system in 12.5 and 11.25 radii. The two complement each other and make for a nice double track layout. I run fairly long diesels (Bachmann Dash 8-40s) and they run very well on either radius. Is it prototypical? Probably not, but in N scale the overhang on the curves is really not very noticeable - at least to my old eyes. Also, instead of a 4x6 piece of plywood, you may want to consider a hollow-core door. I'm running mine on a 32"x80" door and even with the 12.5 inch radius, there is plenty of space left for sidings, etc. Lot of times, you can pick up a door that has some imperfections (mine has a couple of small holes punched in one side) for very little money. IIRC, I paid $10 for mine.
Hope this helps,
Fred Klein
Okeechobee, FL