First attempt at a maiden launch of my Quest Harpoon AGM-85 model rocket on a C6-5 engine. The engine ignited, spewing a fine orange flame typical of what you expect to see at liftoff. Only there was NO thrust whatsoever!! The flame super heated the blast deflector plate and melted the adjustable launch rod holder beneath it, in addition to the black plastic "launch rod stand-off". Luckily no damage was done to the rocket. But the launch pad is now unusable, as it melted the area where the launch rods are inserted. Video is from a Mate 808 camera that I angled upwards and stationed on the ground around 15' from the launch pad. And from my 808 #16 V3 D lens onboard camera. Also my car's dash cam video.