if you want a simple loop of great track that is small radius (that small tank engines can negotiate) then I recommend this. It is super quick to set up and take down and stores in it's packaging to keep it safe and is very reliable high quality track.
http://www.ebay.com.au/itm/New-Kato-Unit...19f039fb00
Here I have that loop but I am running HO narrow gauge engines on it
http://www.ebay.com.au/itm/New-Kato-Unit...19f039fb00
Here I have that loop but I am running HO narrow gauge engines on it