In checking your link, it appears this plane comes with no motor and can be set up as either an electric powered plane or an internal combustion (glow powered) plane. Which did you do? What motor or engine size, if electric what motor, what battery, what ESC etc. If electric and your battery was fully charged, are you sure you put the prop on facing the right direction? Some electric props are hard to tell which is the front, look closely at the embossed size on the prop, it should be on the forward direction. If the prop is put on backward, it still pulls in the proper direction but at a much weaker force. If electric powered, the connections between the ESC and battery are quite critical. If using a cheap connector, you can lose a high percentage of the power in the connector.