I have a BCX2 with most aluminum upgrades, short fly bar, and stock motors..
what are the maneuverability limits of the Heli?...tried a broad sweeping
turn with some speed the other day and was blade clacked out of the sky..
fortunately was at low altitude with training gear...so what is this bird
capable of other than up, down, forward, and reverse, with some mild "u" turns
thrown in?....any modifications that help here, or are we limited by the co-axial
design?..thanks, John H.

The designers of this heli did a really great job. It does have some maneuverability but that is limited. It is a wonderful trainer for tail in, nose in etc. But that's about the limit. The fact that we can get this thing to zip across the yard at all is remarkable. When you get bored - DON'T sell the CX. You will miss it. I fly mine all over and I have yet to clack a blade. My heli never has a glitch other than very infrequent and very minor spikes. I can tune the pendulum effect out by messing with the flybar. Less stability equals more maneuverability. It's a tradeoff.

But certainly it's about time to consider whether you want to go with a fixed pitch single rotor or a collective pitch single rotor heli.
I am going with a fixed pitch heli next, as the controls work the same as with a CP heli, yet there is far less complexity. The FP helis don't compete well with wind. They do not have the pendulum issue that the coaxials have. But they do fly where you tell them to go, just like the CP rigs.
I expect less from a FP heli than I would from a CP heli. It's sort of a middle ground. I know that I am not ready to go CP yet. But that is a decision that each of us must make for ourselves.
In making the choice, consider;
online forum support,
local hobby shop support (advice and parts),
your personal capabilities as regards eye-hand coordination (I am not a natural athlete),
expense (CP helis break as cheaply as FP helis do - but there is a considerable difference in the repair costs) and the FP helis can be had for under $100 for a ready to fly all-in-one-box rig.
Be wary of buying from outside the US. If something runs amok, you have little recourse.
And remember, you fly a single rotor heli ALL THE TIME. They don't just hang there so you can think about what to do next.

Hmmm. You asked about the CX limits. I sort of took off on my own. But it's all stuff to think about on a rainy afternoon.

Soloboss

If you don't have the Boomtown Hobbies CF Tailboom get it. It makes a big difference.

[link]http://shop.boomtownhobbies.com/displayProductDocument.hg?productId=1&categoryId=2[/link]

I can easily do climbing/banking turns and descending/banking turns. I've found that the trick is to add more yaw than aileron (bank). Also need forward momentum at the same time.

I fly in a large open warehouse and can zip around at good speeds, spinning turning and banking. Piruets (sp?) are also pretty easy.

Check videos here and on youtube, there are some pretty aggressive CX2 flyers out there!
I know it doesn't compare to the 3-D acrobatic helis, but that's a different ball game .

Yo SB...thank you and all who replied...please keep us posted
as to your FP adventures....cheers, John H.