Narrow and Standard Gauge
 

I'm building a OO gauge layout, and I'm contemplating adding a Romney Hythe and Dymchurch style narrow gauge line. If I was to use N gauge track and engines would it look alright, or would it be too out of scale?

Sorry, this is just not on. RH&DR is 15 inch gauge. OO is 4 mm = 1 foot.
So 15 inch gauge at 4 mm = 5 mm. N gauge track is 9 mm. The nearest ready made track is Z gauge at 6 mm.

How good are RTR locos for Z gauge? Sorry about asking all these questions, but I'm not knowledgeable on such matters.

Expensive and continental I'm afraid!

Well that idea well have to be abandoned, at least for the time being. Thank you for your help.

what about oo gauge track for the layout (main ? ) n gauge track ( ie 9mm)
as in oo-9 (example vale of rheidol and most if not all of the welsh narrow gauge lines ) hope i haven`t confused you

BB.