True... I just like to use mine for Aerobatic stuff... If you want speed... I promise ya when I had that FX 46 in there it hauled tail, big time, did you beef you fuselage up, I added some wood triangles to the back of the firewall just to be sure with the 46... With the 46 on it would have probably made a good pylon racer... But with 25 she is whole lot lighter, and is a real joy to take for a aerobatic fly... And still lots of power mind you... Supurised me... till I found out that OS 25 FX I have on it, has about the same power as a LA 40.