744 kmh 462 mph the world´s fastest rc model turbine jet / guinness new world re

[Sferrin]

https://www.youtube.com/watch?v=YVNIWuLs_7E

 

[Richard N]

505 mph without an engine:

https://www.youtube.com/watch?v=hFPJ6DUAY10

https://en.wikipedia.org/wiki/Dynamic_soaring