Heli_KV Veteran Location: Ottawa, Canada
My Posts This: Topic Forum | I can say just from my experience.
I fly Walkera 4#3A and 4G6 with the following upgrades: 4#3A - installed Bell-Hiller from Xtreme. This is not required at all, it just makes it way more agile, but this is FP.
4G6 - glued tail slider by a tiny bit of CA - not reqired, but highly desirable. Soldered motor directly to ESC - better HS, but hotter motor. Motor bogs on punches and flips have to be 'soft', not overloading motor. I plan to install new motor ($45). Factory reports that it will work 90% of cases with stock ESC. If it will not work, then I need to carry additional expenses as another motor and another ESC, which should be modified. Oh and good idea to install plastic head, due to weight savings, not required though.
Not that motor change is required, but stock one is hot and weak for 3D and punches.
Both are quite twitchy and require careful setup - balancing, etc. Relatively cheap in support. Roughly: Blades - $5 Shaft - $4 Battery - $10 - best battery, even less really.
Overall I am happy with Walkera small helis. Not everybody are happy though. 4#3 can go through brushed motors quite fast. It depends how lucky you are. Some motors lasted for me 10 flights, some significantly more. Looks like latest generation is quite good or maybe I just got good batch. Motor is $5.
Walkera CB100 is reported to be more stable, although 4#3 is stable as well being tuned (not modded, but tuned). Fast for sure, due to size, but hovers stable. (I was never believed in this even on this forum, despite videos).
HBK2: I kept modifying it and now it is a monster, very powerful and agile. For sure less stable than 450 class. Looks to me, that only Doug can fly stock HBK3 (correct me if I am wrong). All others, looks like, went through mod stage and people on this forum are not generally happy with stock HBK2 (at least I got that impression).
I personally like HBK2 due to it's size. Maybe I liked 250 size more, but I never tried, so cannot say.
Overall, looks like I have tendency to small helis, due to flying space required. Just grab and go.
Trex 450 for sure has better support in parts, bigger, thus more stable, but requires more space. I do not have Trex 450, but I have other 450 models. |