best track super loop

Mar 30, 2014
450
4
18
11
has anyone had any experience with these, Im thinking of getting one to play around with at scout races
 
The guy that did my boys race had one and the kids got to play with it after the race. You have to have an extended wheelbase or the cars won't make it through the tight radius and most cars will end up falling out of it onto the floor. I think about 10% or less made it.
 
Chris, thanks for the response
I was wondering what the "success" percentage might be... may not be a good idea