I have several friends that are into the jet r/c planes and the engines that I am familiar with are the same brand but are about 75% the size of those he has there. Those things pack a hell of a wallup even sitting static on a driveway, throttle it up and one of them will clear it completely of leaves for about 100 feet. Once airborn and getting air rammed in the intake, their power increases dramatically.

He can climb - at the end of the video it specifies the rate. I don't remember the climb rate (and don't have time to watch it again) but he could climb at 100km/h at, I think, 100 meters a minute. His limitation is fuel - he's limited to a 5 minute run in the current configuration.