I have built my own very cool and awesome jet engine bike!!!
The engine I used is the Swiwin B60. This produces 60N of constant power. It runs on diesel and kerosene. Since kerosene is very hard to get where I live, I used diesel instead. I rode the bike on a very long bike lane in the middle of nowhere, where I reached a top speed of 60 km/h!!!

I also built my very own safety controller. It has a gas handle, an arm switch, a gyro, and an Arduino. The Arduino waits for the arm switch to be toggled, and then it will arm the engine. After you give it full throttle and then none, it will automatically start up and reach temperature.
Once it’s running, I prepare myself and push in the throttle. Once I am at full speed, the engine runs at 150,000 RPM!!! This is insanely high. Just think about it—your car runs at around 4,000 RPM (depending on the car).
The gyro was used to track my motion. If I happen to fall, the gyro will detect it and shut down the engine immediately.
I used 1L of diesel, which I had in small fuel tanks. At full throttle, I had around 2–3 minutes of driving time before it was drained.
Video link: https://youtube.com/shorts/7kXFUPD_AwQ