there is lots of room in the reaction fuse, 3.5 liters of fuel and I had 1.5 of smoke until I needed the smoke system for something else. Chad shot some good footage of my reaction and its on youtube under seflyer flying reaction 54. fun jet to fly in most any conditions with no bad habits. just depends on what your looking for, scary fast and smooth, Flash or semi fast and smooth, Reaction.

Kevin