Just to touch on what Campy said regarding the user friendly .46 bb engines. I have both the Tower RTF, & the NexStar RTF. Both come with a .46bb engine. The Tower engine required about 3 minutes of tuning by an experienced person to achieve a nice smooth idle & good transition and has been a good running power-house of an engine ever since! I'm really surprised at just how well that cheaper engine runs. The NexStar comes with the OS .46AX (probably a much better engine quality wise) this one comes somewhat pre-tuned for ya, it has a plastic stop installed on the needle valve that allows you some adjustment but not enough to get out of the safe range for the engine, can't get too lean or too rich. It's really just a matter of finding the sweet spot within that small range of needle valve travel. I was able to achieve this by myself in just a couple minutes of warming up the engine & proceeded to break it in, in the air, no deadsticks, it ran flawlessly right out of the box. I love this engine!


Mark