MTH Scale Wheels / 072 Fastrack Switches

Well, the 072 term in 3-Rail is actually only 36 inch radius, i.e. half of the 072 inch diameter circle.  Thus, a radius of 50 inches would then be a 100 inch diameter circle.

Thanks Hot Water

Then the MTH site says 042 on both the scale and high rail versions.

So I wonder which is correct.

Dave

From experience, that model 4-8-4 needs 072 in 3-Rail (I have one), and there is no way in he%% that version with scale wheels (all wheels flanged too), will operate on 042 diameter curves, i.e. 21 inch radius.

if there is run time on the loco, i wouldnt expect the dealer to take it back,since its no longer a new product...Jim

I have not run the engine for that very reason.

Tempted to try it as it sits here in front of me.......... !

I like the look of the scale wheels but without any knowledge of weather it would run properly on 072 track and switches (Fastrack) I am not going to try it.

I'll post pics.........it really is a great looking beast!

Thanks

Dave

I have a bigger engine, the C&O Texas type. I have a curve on my 2 rail mains that is 5' radii (10' diameter) and that engine won't do it. Like HW said that model has all wheels flanged and that makes it not work for small layouts.

 The fact that you have fast track 3 rail track, makes me think there's no way! I wouldn't expect it to run on less than stated of 50". Maybe it can  go slightly less on two rail for short curves?

 The look of the scale wheels on that engine would make me want to switch track. Most of the time the large 3 rail pilot wheel(s) and main driver's flange size, looks too far out of scale.

 I was thinking that if you did run it and can't send it back, I would trade you for it. I just got this 3 rail engine, although it's a different road,

http://mthtrains.com/20-3188-1

Kanawha Southern Berk (+ some cash?)