I originally wanted to try the ARX-IR for a lightweight racer, but I may just keep it setup as a dragster. After I got a decent tune on it I realized how fast it was and threw some 5152 bi-blade props on it and I just couldn't believe it's speed and acceleration. I have a couple 6s Mericas and they feel so slow in comparison. I plan on flipping the motors around like a more traditional racing quad just to see how it flies. I would also like to try some higher kV motors, but the manual for the stack says not to use any motors above 1700kV. I assume this is related to current draw, as it is the quad draws ~42A in a punchout but it drops quickly as the props unload. I have a set of Hyperlite 2207 1922kV motors that I really want to try on it.

Overall I really like this frame, but it is a daunting task to build compared to anything else I've built. Most of the pieces interlock together and are then secured by four bolts in the center of the frame. I was skeptical at first but once it's all put together it is rock solid. I have a feeling changing arms will be a chore, but I haven't broken one yet. The battery mounting o-rings are more then sufficient to hold the battery and balance lead in place but they are a pain until you get used to them. They are convenient for holding the balance lead out of the way, and they send you a spare set with the frame. Unfortunately I was only able to use three standoffs as the back of the ESC gets in the way, and the USB port on the FC is blocked by the standoff on the opposite side. If I build another one of these I will probably try full sized components.