4 Kidz 2

Great for kids. The 3 rotors bind against the stairs a bit therefore not allowing them to rotate smoothly.

A pretty straightforward one 4 kids...Thanks for sharing @D.S.Masters

Nice level 4kids... I won't rate it as an adult.
Thanks!

@gmacpro That's the problem with motors - they only want to rotate one way.

I really like this one for an introduction to the spacing needed with zappers. There is sufficient room that you don't really risk getting Zapped. Like the other one, I will let you know how my grandson takes to them.