Comments on: Minimum HO Turn Radius

By: frank feagan

frank feagan — Wed, 21 Jun 2023 14:23:49 +0000

Thank you. As I said, my trains are of the 1870 steam era (old cowboy west). Most of my track is Bachman (Not the snap track) and probably some other brands from random eBay purchases. Since they are a mixture, I guess I’ll make some circles with each type of track and measure the radius of each. I’ll experiment with the various track radii and see what I can figure out.

By: frank feagan

frank feagan — Wed, 21 Jun 2023 14:14:05 +0000

In reply to Nigel. Thank you. I'll try and translate into American from your English advice. frank

By: Frank B

Frank B — Mon, 01 May 2023 03:07:24 +0000

Test the loco of a sufficient length of the curved track you intend to use.
If it works, make a note of which of your locos works on which minimum radius.
Then buy more of the track that works. Keep the track that doesn’t for shunting yards, or lines with smaller locos. (Or just for testing.)
Manufacturer’s websites should state the mininum radius each loco is suitable for.
If they don’t, hit the “Contact Us” button and ask them.

By: Joseph Tillman

Joseph Tillman — Mon, 01 May 2023 00:40:57 +0000

For HO scale, the 4-4-0 and 4-6-0 will handle 18″ radii curves with ease. You mentioned the locos were from the 1980s so they might well be old Tyco or AHM models. Those could usually do a minimum of 16″ radii curves pretty well and possibly 15″ if you are not running at too high of speed.

For locos of that era, stick with Code 100 track as the flanges might hit the heads of the plastic spikes molded onto the ties of Code 83 or smaller track.

By: Nigel

Nigel — Wed, 12 Apr 2023 08:17:48 +0000

Being British, I can only speak for 00 scale although it uses the same track as H0.

The general recommendation seems to be a minimum radius of 438mm (sometimes referred to as second radius by the likes of Peco & Hornby). Your 4-4-0 may cope with less but the 4-6-0 may struggle with less, particularly if all of the driving wheels have flanges.