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Old Apr 08, 2011, 09:31 PM
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how to set blade pitch?

got my very first CP CopterX 450 Se V2 RTF with CopterX TX

got my pitch gauge, watched all the videos i can find online and i'm still lost.
please help!

i followed the CopterX 450 preflight blade check video but was very confusing.

PLEASE tell me if this is how i should be doing it:
unplug the motor
set the throttle stick to middle
all trim tabs at center
set left VRB knob to center
slide gauge on blade
set pitch to 0 degrees by adjusting the long links

this video says to set at -2 degrees at 0 throttle by adjusting the VRB knob. can this be right?
Preflight Checking for CopterX CX450 AE V2/ SE V2/ ME RTF Helicopter - Chapter 6 (2 min 3 sec)


thanks for your patience
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Old Apr 09, 2011, 08:36 AM
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You should really be plugging your radio into your computer and setting up the heli properly with pitch curves, throttle curves, and swash mix etc. Your radio has most of the settings available that more expensive radios have, so you should learn how to use them.
Using the VRB knob to adjust pitch is a really bad idea. Either turn it off or leave it centered. Turning it off completely is preferable.

Once set up properly, for 'normal' mode you should have 0 pitch when your throttle is centered, and about -2 degrees when it's all the way down.
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Old Apr 09, 2011, 11:13 AM
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what he's tellin ya! is you want -2 deg.s at bottom stick in normal mode!

its a good place ta start when learning!


always make shure flybar is level when checking pitch!

with all sticks centered and flybar level you should have 0 pitch!
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Old Apr 09, 2011, 12:26 PM
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I was in a bit of a hurry when I replied earlier actually. The idea of negative pitch is so that you can bring the heli down in a strong wind. The -2 pitch should happen when the stick is slightly below mid position not just all the way down. Depending on the pitch curve, it might go down to -4 or 5 at 1/4 stick and stay that way all the way down to full down on the throttle.

In any case, in order to set things up properly, you need to know what the pitch curves are, and to do that you need to hook up the CopterX transmitter to a computer.
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Old Apr 09, 2011, 03:33 PM
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i'M gonna AssUMe that he got his heli RTF!

in which case, the Trx. should be pre-set at the factory, and the whole point of checking the pitch, is ta make shure it was done rt. at the factory!

not being familier with the copterx rtf, I'm thnkng that the pitch/mix knob, is ta make up for any minor discrepencies in the factory set-up!
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Old Apr 09, 2011, 08:10 PM
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thanks for everyone's input.

i am beginning to understand how the pitch angle works.
i just wanted to know if i was doing the right measurements and adjustments.

so, back to the question, am i doing it right? as stated from above.

for a beginner like me, is the -2 degree a good starting point?
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Old Apr 09, 2011, 08:19 PM
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Quote:
Originally Posted by jabooty View Post
thanks for everyone's input.

i am beginning to understand how the pitch angle works.
i just wanted to know if i was doing the right measurements and adjustments.

so, back to the question, am i doing it right? as stated from above.

for a beginner like me, is the -2 degree a good starting point?
-2 to -5 degrees negative pitch at full low stick is a good starting point for a beginner. Its enough to bring the heli down in some wind without the risk of "slamming" the heli down in a panic stick drop which is common for new pilots. You would only need full -10 degrees negative at low stick for 3D flying.
I usually suggest -5 full low to +8 to +10 maximum full high stick with 0 degrees center for starters. You can then adjust the pitch curve transitions in between those points to your liking and feel that is best for you.
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Old Apr 09, 2011, 08:51 PM
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thanks. i'm gonna try that.

i'm guilty of that panic stick drop. lol

i have alot of learning to do.
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Old Apr 09, 2011, 09:33 PM
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http://www.dream-models.com/eco/flying-index.html

if your that new! I highly recomend the radds system, worked for me!
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Old Apr 11, 2011, 02:00 AM
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I'm fairly new to flying with my CX450SE.

So new that after 8hr (73 flights) I just had taken off my training gear.... yes I'm taking is very slow.

Anyways.. I have rebuilt the head and set the pitch for a beginner hover mode and also setup the TX via the software.

Have a look at finlessbobs ccpm vids and

get this software to program your TX.
http://www.rcgroups.com/forums/showthread.php?t=1390731

Also disable the VR.B pitch switch and set throttle kill to either switch A or B.

Good luck and happy flying
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Old Apr 11, 2011, 05:09 PM
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what is throttle kill switch?
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Old Apr 11, 2011, 05:46 PM
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Quote:
Originally Posted by jabooty View Post
what is throttle kill switch?
When you enable Throttle Kill on your TX via the software it will allow you to switch on/off the power to the motor.

I good example in use is when you plug in the flight battery. Make sure the throttle kill is on and it will assure you that when you plug the battery the blades will not automaticly come to life.

I set up my point 0 on the throttle curve to 5% so when I have plug the battery in, walk away to my standing area, flick the Throttle kill switch off and then the heli does somewhat a soft spool up. Then I use the sticks to give me more power.
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Old Apr 15, 2011, 04:34 PM
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ok. im finally beginning to understand this.
thanks very much for your help.

why should i disable the VRB adjust knob. on the stock settings for the CT6B tx, the VRb knob is the pitch adjust and the VRA knob is the headlock gyro
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Old Apr 15, 2011, 05:52 PM
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>why should i disable the VRB adjust knob. on the stock settings for the CT6B tx, the VRb knob is the pitch adjust and the VRA knob is the headlock gyro

Unless you actually use the hover pitch adjustment, and I don't think many people do, then there is no sense in having it. It's just one more thing you have to keep checking at each flight. Also, if you are setting up your heli for zero pitch at mid stick, then your settings are going to be all wrong if the knob is not exactly centered while you are doing so. Therefore, it's best to just turn it off...at least during setup.
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