I bought a Bensen B-8M gyrocopter. This should be all I need to write, but I'll finish the story. I didn't have a pre-rotator so I had to whip the rotor around by hand to get it fast enough to start windmilling while I taxi. I got it up to speed, and without delay, rolled out on the runway for my first flight ever in a 90HP two stroke McCulloch drone engine aircraft. It had a wood pusher prop. I was worried about losing rotor speed, and the only advice I got before flight from the seller was to get it up and going before the rotor speed decayed. So - I nailed the throttle to the stop, and that drone two stroke spun like an angry wasp and I was off the ground and climbing HARD into the wind.
This all worked fine for about 40 seconds, and then the prop decided to leave the aircraft, it had had enough of this high torque spit. My first landing was going to be an autorotation(the gyro is always in autorotation of course). I pulled the power back, switched the engine off and pushed the stick fwd to the stop. Which - was my second mistake of the day, as that unloaded the rotor. Which means rotor speed decayed QUICLY. So, I pulled back some, kept the craft semi-level, got some rotor speed back, and flared just in time to touch down on the opposite numbers of the runway. It rolled a few dozen feet and then I ****ed all over the seat - which is also the gas tank full of 9 gal of two stroke fuel.