My favorite Q 500 is the Viper, but it's far from problem free. Just look at the threads. I don't know the Dominator that well, so search the threads on RCU to find and correct any short comings. The ailerons are so small, it just isn't worth the effort to do spoilerons, the room is limited and you don't want to add more weight. Most Q 500 fly nearly as slow as trainer for landings with the engine stopped anyway. My viper will fly knife edge no problem, so I don't see why the Dominator cannot do it too, but expect it to knife edge over a 100 to keep it from slipping down. For the first few flights go with the stock muffler and a 9X7 then, by all means get the Jett muffler. I would try the 9X8 too.
If this is your first speed plane K.I.S.S. don't put too much effort with added features in it, for it may not last long.
No hart ache makes it easier to go out and snag another $140 ARF. Build it. Fly it. And grin!
