CP micro

[thawild1]

*decrease the pushrod length I meant

[Solitaire]

OK, I read the manual (well, parts of it) and forget the comment about reversing the gyro as it appears that the e-board handles everything. Correct me if you have a separate gyro, I couldn't see one in the pics or description.

If you have full travel each way on the pitch slider, then you should be set. You can adjust the "tail rotor extent" to get absolute full travel. You just need to make sure there is no binding in either direction. Lengthening the tail servo pushrod won't give you any more travel. That'll just make it bind one way. Now with the slider centered, you should have a few degrees blade offset to counter the main blade torque on startup. If you feel you're not getting this blade offset, then you can adjust the pushrod slightly making sure not to bind in any direction. Page 34 pretty well explains exactly that.

The gain adjustment is for tail authority. It won't eliminate a spinning problem. Ideally you want to adjust the gain up til you get a bit of an oscillation (or wag), then back it off slightly. If you're getting severe spinning, there is another problem.

And reading more of your prior post, that problem may be a reversed (or in your case not reversed) rudder. Easy enough to check. With the heli plugged in and initialized, throttle down, move the rudder stick to the left. The leading edge of the tailblades should rotate to the right (looking at the heli from the rear) and vice versa when you move the rudder stick to the right. If this isn't the case, then you need to reverse the rudder on the Tx. Also make sure the leading edge of the tailblades rotate up into the downwash of the main blades. In other words they should rotate anti-clockwise when looking at the heli from the right side.

Ok, that's enough typing. Keep us posted.

[thawild1]

I think you are correct about the E-board, I dont see a seperate gyro. I think the rudder is operating in the proper phasing, with the heli spinning CCW, I apply full right rudder and it will stop or slowly start turning CW. All of the blades are spinning in the correct direction and bolted on properly. I shortened the tail servo pushrod enough to make the heli stop spinning, but I lost very much travel. If I go into full scale mode I will get binding. So this is a no go.
So my last idea about this spinning is the main blades. I believe that this heli comes with foam blades from the factory and currently there are carbon fiber blades installed. With this extra weight, I think the required torque is going to be greater, thus the tail cannot keep up with the load since it is designed for the stock blades.

Any thoughts??

[Solitaire]

Ah, now that makes sense. The CF blades are likely too much mass for the tail to counteract. Maybe try some stock blades and see if things are more manageable.

[thawild1]

Back to basic physics right? Im gonna buy/install stock blades tomorrow, hopefully that will remedy the problem. But it makes me think, if that is the problem, then how do so many people fly the CF blades? Maybe a different tail blade is meant to go with them as well?

Ill keep you posted!

[Solitaire]

Well, doing some more thinking on this...
Even with the heavier blades, the heli should settle a bit once up to speed. If not, there's still something going on with the tail. Have you checked on any slippage in the tail mechanics? Perhaps the torque tube drive gear isn't secured solidly.

[r/c basher]

Sorry for this late post, Ive been extremely busy lately. Have you gotten the helicopter airborn with it spinning like this yet? When I start up my novus 125 cp it spins a half turn, sometimes 3/4 and then once in the air its normal. Im flying the stock foam blades.

It doesnt take much for the torque tube gears to strip, if you land and have a less then good landing, they can strip.

[thawild1]

After weighing the blades I was thinking the same thing. They arent too heavy and I think the gyro would still counteract them. I was feeling around for slippage in the tail and while I didnt feel any, I can feel the tourque tube twist some. I dont think the gears are stipped, but I will perform a closer inspection. I expect some rotational torque on startup, but this thing just spins madly. Def a tail problem. I have lifted it off the ground a few inches and it does settle somewhat, but I still have the pushrod shortened too much and cannot fly it this way with out binding. I will try to get some pictures and possibly video up sometime soon.
I really wanna fly this thing!

[thawild1]

So I took the entire tail apart again to reinspect everything much more closely. I guess this thing really is fragile, I discovered rounded teeth on the main rotor side of the torque tube After replacing the gear set I adjusted the pushrod back to where it needs to be and getting the correct angles in the tail once again. I may actually be at the stage where I can trim this thing and get some airtime with it! But my im tired of playing with thing for the day....time to go for a surf
Ill keep you posted about the flight status of this thing tomorrow!

[rtfheli]

May 9, 2011 17:42:29 GMT -6 thawild1 said:

I am looking to buy a 3d capable RTF micro for my next heli. So far I have really been fiending for the novus 125cp, seems to be affordable and durable at the same time. It also has dual rates which is something I find attractive as well. Would this be a good choice for my first CP? I plan on mostly indoor flying by the way.
Thanks guys!

If you like your the Novus 125CP (Walkera 4G6 Clone), consider looking at the new Flybarless version which is the Walkera V120D02 or V120D03. The "V120D03" version uses a brushless tail motor.

Below is the 2.4Ghz Walkera V120D02 --> The flybarless version of the Walkera 4G6 (Heli-Max Novus 125 Clone)



If you need more RPM power, consider getting the 2.4Ghz Walkera V120D05. All utilize the 3-Axis Gyro technology (Recently renamed to 3G Technology). We have mods for these small 6-CH CP helis including the X-Treme Carbon Fiber Blades and Tail rotors. Visit us at: www.rtf-heli.com