I've had my BCP for almost 2 weeks now...
I just upgraded it today with the following:
Thunder Power 3S 1320mah LiPo
8T pinion motor
Heat sinks
All I can say is WOW! It is a TOTALLY different machine. So smooth and less tail jitter, etc. It is A LOT easier to fly like this then it was with the stock motor/battery. I just flew it for about 20 mins on the first ever charge of this battery. I landed to recharge only because it had been flying so long, and I am paranoid about ruining my ~50.00 battery. It still had exactly the same power/response (and rudder trim setting) when I stopped flying as it did when I started. I'm sure I could have easily gone another 5 mins at least...
Of course part of the reason it flies so much better now is because while I was at it, I replaced my main rotor shaft/gear because my gear had a few mangled teeth, which made a clicking noise that bothered me
I also noticed yesterday that my collective was starting to get just a little sticky. When I took it apart tonight, I found that my spindle was ever so slightly bent from some previous crash I'm sure. I replaced it, and now my collective is smooth as silk. It will VERY gently float off the ground, and hover 2mm off the ground with no problem. Before, when it was bent, I would slowly increase throttle to take off, then it would jump up from the ground about 6cm up into the air. It would also occasionally !QUOT!surge!QUOT! up or down a bit while hovering. All of that is gone now.
Oh-yeah, I threw a new set of flat wood blades on it also 'cause the old ones were getting a little beat up.
After the above repairs and upgrades, I spent about 1 hour getting the gain and proportional set just right. Now, it flies like a dream... MUCH better then it ever did when it was new.
If you are a relative beginner to helis like I am, and you are still mostly just hovering and slow FF with the stock battery/motor setup, I strongly recommend you upgrade with similar equipment to mine. I promise you will be glad you did
I also put a new tail motor on it to see how long it lasts. I've heard that going to 11.1v Lipo causes them to burn through tail motors. If it does burn out, I'm going to replace it with the dual motor setup, I think...