Minimum radius Niagara

Lionel lists a 054 minimum, MTH 072. You may consider starting with the Lionel and work with the swing on the front and rear trucks. I suspect the centipede tender may be a limiting factor. You may want to consider having flanged wheels only on the front/rear.

Frequently, minimums are established based upon turn-outs.

Thanks Gilly.  I know the Williams say 72 wasn't sure if MTH had done a Railking that would do 42.

The original introductory video of the Lionel Niagara stated the minimum track curve of O-72 was dictated by the tender, not the steam engine.

Tender will for sure be the issue. I de-railed my VL Niagara twice on 072’s in reverse.    

Check this video up close.....my O54 curves

https://ogrforum.com/...29#81959972765751929

As you can see. it's a pretty close run thing......

Peter

coach joe posted:

Thanks Gilly.  I know the Williams say 72 wasn't sure if MTH had done a Railking that would do 42.

There have been no under-sized Niagaras in 3RO produced by anybody. I hope that it stays that way, for some reason. 

jeremy ferrell posted:

Tender will for sure be the issue. I detailed my VL Niagara twice on 072’s in reverse.    

I haven't tried that detailing-while-in-motion method yet. 

Sorry. It was there.

The MTH Niagara with  the wired tether does 0-54. The wireless will not. 

jeremy ferrell posted:

Tender will for sure be the issue. I detailed my VL Niagara twice on 072’s in reverse.    

****!  My bad.  

Lehigh Valley Railroad posted:

The MTH Niagara with  the wired tether does 0-54. The wireless will not. 

I would compare the engine to tender gap on both. A longer wireless drawbar might make a difference.

Pete

My CCII Niagara does handle 054's just fine.  Even manages 072 "S" curve as well.

Fred

Not gonna happen. The biggest thing with 8 drivers on 0-42 is gonna be a mikado. Even if a niagara could, it would look absolutely rediculous with the two center sets of drivers hanging in mid air off the rails.