RavensburgerGraviTrax Power Extension Interaction - Marble Run & GraviTrax Trampoline - Add On Extension Accessory Marble Run and Construction Toy For Kids Age 8 Years and Up - STEM

The boy loves it. About as close as you can get to pepetual motion.

If I had to use only one word to describe GraviTrx it would be consistency. They have great quality control of each product they make. One piece will always fit to another mating piece. The software is absolutely phenomenal. My 10 year grandson picked up my iPad just after I downloaded it. He was running every feature within minutes. He didn't have to read any instructions and just started to layout a track how he wanted it. I couldn't believe it. He built his first layout within 30 minutes. This is a great STEM tool that is truly a great way to think and visualize what he wanted to build and laid it out in a few minutes without any difficulty at all. I'm very pleased with the whole product line. There are a few things that can be a little bit harder to get to work successfully, but then he has to work through the thought process for what could cause the failure. It's a great way to get a background in the scientific process. This also teaches how to visualize a design in your head or in the app before you build it. Even issues that can come up can be seen in your mind before a layout is built. I for one love this entire product line. My hat is off to GraviTrx for making such a great product. He wants to be a structural engineer like his father and grandfather, yet building very different products.

A little pricey, but has added great features to our Gravitrax setup – it's wonderful to see (and hear!) the balls ascending, activating switches, changing gates and releasing new marbles. etc.. The accompanying app has improved hugely recently, with some great Power tracks on there now. Unfortunately, one of the switches in the box was defective, but whilst Amazon couldn't do anything, Ravensburger UK sourced a free replacement from Germany in around a week, so very good service from the nice people there, once again.

Good ideas. They work as described and are an excellent addition to the basic sets.be warned, you'll need 11 AAA batteries.

This is a really great addition to the gravitrax sets, my only complaint is that one of the pieces is defective out of the box and does not turn on. Since it’s the starter dome it makes the end piece useless as well. If this could be replaced I think we’d be very happy with this product, considering its hefty price tag.

Kit nuovo adatto a chi ha già la pistaMolto bello inserire pezzi con movimento

Precio es el mejor

Mes 2 enfants, 5 ans et 9 ans passent des journées à jouer à ce jeu… très ludique et de bonne qualité

Wir haben schon sehr viel Gravitrax - eine Herausforderung war immer, dass man wieder Höhe gewinnt damit die Kugel weiterrollen können. Das kann man jetzt mit der POWER-Erweiterung gut bewerkstelligen - es ist damit auch erstmals möglich ein Bahn zu bauen, die endlos weiterfährt ohne dass man selber eingreifen muss.Wenn man das mit den bisherigen Erweiterungen kombiniert, kann es allerdings auch sein, dass jetzt ein Teil der Strecke automatisch bzw. per Funk ausgelöst wird, und die "alten" Elemente nach wie vor manuell zurückgesetzt werden müssen (Gauß-Kanone, Jumper, Kaskade, etc.) - dieser Mischbetrieb wirkt dann etwas merkwürdig.Ebenfalls merkwürdig ist die Weiche, weil die beiden Ausgänge ein sehr hohes Gefälle aufweisen - warum hat sich uns noch nicht erschlossen.Aber grundsätzlich ist diese Erweiterung wirklich super und macht viel Spaß.