CX2 problems (newbie ?'s inside)
 

Hello, im brand new to the site and to the intense world of RC heli's. I just purchased a Blade CX2 kit and im having some problems.. Excuse me but i do not know the proper terms for all parts yet but my Heli will not fly back. I had my heli about 15 feet in the air it ran into a tree and fell to the ground it did not fall to hard but enough that i cant go back anymore. I attached a couple pictures of what i think is the problem... It seems to me the heli will not go backwards because theses 2 bearings?? being out of this slot they go into. and im getting a bad connection between the gear for the top blade and the motor. Can anyone offer me some help ?? please ? i can add more pics if needed... Thank u in advance.

RE: CX2 problems (newbie ?'s inside)
 

Ive tried placing the battery in different spots and that does not help.... as soon as its close to taking off it drifts FWD.

RE: CX2 problems (newbie ?'s inside)
 

Yep, it looks like the upper bearing for the outside shaft has popped out of the frame and that the collar that's supposed to hold it in place has slipped, which is preventing the swashplate from tilting backward. The bearing needs to be completely inside the tube on the frame with the collar butted up against the bearing. Make sure when you resecure the collar that it's not pressing down on the bearing, merely resting against it, or else you'll put too much strain on the motor.

RE: CX2 problems (newbie ?'s inside)
 

And with the collar being gone is that also why im getting a bad connection with the motor and the gear ??? It seems the whole shaft that the blades are on is loose. but i get the collar also helped keeping that in place ???

could someone tell me the part number for the collar ? i am not find it in the owners manual

i see EFLH1214 but i dont think thats what i need.

RE: CX2 problems (newbie ?'s inside)
 

The collar is #20 (EFLH1214) and the bearing is #27 (EFLH1215) on the exploded view in the back of the manual. Having the collar slipped up the shaft like that could definitely cause the shaft to slide up and down, engaging and disengaging the gear; the collar's job is to keep that from happening. My guess is that the top rotor head was jammed against something during the crash.

The collar is still there (the upper of the two metal rings between the frame and swashplate in your photo; the lower ring is the bearing), so you shouldn't need to replace any parts, nor should you have to disassemble anything else: just loosen the set screw on the collar, slide it down the shaft -- pushing the bearing into the frame's tube, making sure that the gear on the bottom of the shaft is resting against the lower bearing and meshed with the motor gear -- and retighten the screw. To reiterate what I said in my previous reply, the gear on the bottom and the collar on the top should be barely touching the respective bearings so that the shaft doesn't bind up.

Edit: Corrected the reference numbers and part numbers.

RE: CX2 problems (newbie ?'s inside)
 

OK now i see how that all works. i took it all apart before reading i didnt have to. lol. i got everything in place but i shreaded up one of the gears. I can turn it on and at least now see the bottom blades goin up and back. but the top blade hardly spins from the bad gear... I will go to hobby shop sunday AM and report back. Thank you for the help !!!

RE: CX2 problems (newbie ?'s inside)
 

Glad to be of assistance. The gear only comes with the shaft attached, so you'll be getting a new outer shaft too. The part number on the unit is EFLH1213. All in all, it's a relatively inexpensive repair, especially compared to a 4-in-1 unit and the motors, which I've already had to replace as a result of the same crash.

RE: CX2 problems (newbie ?'s inside)
 

I dont need the gear with the shaft attaced its the other one that is bad. Should i order a couple of each? are gears something u burn up in this hobby ?? In my RC cars i need gears once a week.

RE: CX2 problems (newbie ?'s inside)
 

So, the lower gear (connected to the inner shaft) is bad? Even better, i.e. cheaper. It may have gotten damaged when the upper gear jammed against it.

RE: CX2 problems (newbie ?'s inside)
 

yeah not knowing the damage i was doin i was trying to run it with that bearing sticking out and that had the entire shaft loose. so the gears were just slipping against each other. happy to see the one with the shaft is only 8.95 and the other i think is 2.95.

RE: CX2 problems (newbie ?'s inside)
 

The only things I've had to replace thus far other than the 4-in-1 and motors are blades and skids. I would heartily recommend the skids from boomtownhobbies.com; they'll take much more abuse than the stock skids.

The gears are not something that break often. Something you might want to do to prevent damage to the upper rotor head is to remove the screw that goes through it. Your flybar will probably pop out during a moderate crash, but it's easy to pop back in and the alternative is a broken rotor head.

RE: CX2 problems (newbie ?'s inside)
 

The screw in the upper rotor head is that in one of the pics i posted ? if so could u point it out to me..

RE: CX2 problems (newbie ?'s inside)
 

It's out of the frame in the photos. If you look at the very top of the upper rotor shaft where the flybar attaches, you'll see a tiny screw that runs through that gap. That's the one that I've seen several posts recommend removing and my LHS even suggested it. My rotor head is still intact after several crashes during which the flybar popped out; a colleague of mine did not remove it and ended up having to replace the rotor head and inner shaft after a crash not long after he purchased his CX2, so there must be some merit in removing it.

RE: CX2 problems (newbie ?'s inside)
 

Before you go to get parts, take a good look at the inner shaft. It is easily bent. If you are very careful, you may be able to straighten it. Removing the flybar screw may also keep you from bending the inner shaft.

Chris