Hey guys, first post here.

Ive got a little xmas layout  with pretty much just an oval track setup. No crazy s turns or anything, just 18" radius and 2 18" radius switches for sidings.

My question is will a larger locomotive like a Bachman K4 4-6-2 Pacific run ok on 18" track. I hear crazy stuff about people running huge decapods and stuff on 18" but its just so hard to belive. This is about the biggest loco id be looking to run. Will this locomotive run smooth on these curves?

Thanks in advance guys!