I got Grippity Gravity for Christmas one year. My father was an engineer. He didn't like the way it made noise when it went upside down so he balanced it by glueing pennies to it. Then he filed the wheels/gears so they ran smoothly. Then he an my uncle tried to rewire it to put in a stronger battery and make it go faster. I didn't get to touch it that first day, but some of my best memories were Dad and Uncle Carl and I laying on the living room floor tinkering.

I had several sets of Grippity Gravity. The first one was new, several of the others were garage sale pick ups. There was also another set of \\'cars\\', I assume the same company, that would work on the same size tracks. Instead of all dark blue (or was it grey?) track with space cars it had multi bright colored track with airplanes and trucks. When new the system worked quite well. It had culdesacs that the cars would turn around in. Intersections you could set so the cars would go a certain way. Almost all of it could be set in any direction, right-side up, upside down, side ways. On time I covered a quite large living room, and every piece of furniture in it with a \\'city\\' of track. After some years the plastic became very brittle. Even unused pieces became unusable... Not one to pass down the generations. All in all, one of my favorite toys.

I am looking for a "grippity gravity" for my brother who had one when he was 4, in the early sixties. He is now 48 and has cancer and I think it would make his day if I could find one for him. Thanks to anyone who has one.

I received one of these for Christmas, my best guess would be around 1971. What an incredible toy. It was all blue track with the moon-car type vehicle (not the earlier rocket). Within a few months the toy was on recall and I was heartbroken as my parents returned it to the company...never to be heard from again! They just don't make creavtive and inventive toys like that any more.

I got one of these for Christmas and have Super-8 footage of that day. Great memories. Only saw one on eBay and it was the space ship not the moon buggy like mine.

I had one of these that was disassembled in a paper bag in my closet as a kid. I remember the babysitter I had was upsetting my sister so I jumped in to save her. Needless to say he picked me up and chucked me into the closet and one of those damn blue tracks jammed me in the face and my pillow was soaked with blood in the morning. I wish it was set up on my desk that night!!!

i had one with blue see thru track went in the tub waterproof car was awesome anyone got any pictures?