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CP PRO Head speed

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Old 04-09-2008 | 09:07 PM
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Default CP PRO Head speed

I have a CP PRO with a DX6i and was setting my pitch with a gauge. I got the pitch right on and was testing the blade tracking and noticed when I had the throtle all the way up the head speed seemed to bog down. Is there A setting in the DX6i to help this.
Carl
Old 04-09-2008 | 09:37 PM
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Default RE: CP PRO Head speed

You proabaly have too much pitch for the motor. What is your pitch and throttle curve like? Also what is your top end pitch?

Nick
Old 04-09-2008 | 10:52 PM
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Default RE: CP PRO Head speed

My normal Pitch Curve
33 42.5 50 75 100

Normal throtle curve
0 25 50 75 100

Stunt pitch curve
0 25 50 75 100

Stunt throtle curve
100 75 50 75 100

Is something ther to high to make it bog in normel at full throtle
Carl
Old 04-09-2008 | 11:57 PM
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Default RE: CP PRO Head speed

Those are fine. How is the gear mesh? Are you hitting the top of the head at full throttle? Is there any binding? With your pitch gauge what do you get at top stick?

Nick
Old 04-10-2008 | 07:30 AM
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Default RE: CP PRO Head speed

I just found that in norm at low stock I have -2 and at high It is off the pitch gauge at about
15+. How do I lower the high stick without messing up my 2- at low stick. Also on my D/r and expo I have it set at .

Aile 0 100% +5%
Elev 0 100% +5%
Rudd 0 100% +5%

In Idle up mode the pitch low 12- mid 0 high 12+ so that looks ok.

If I hit the Rudd D/R switch will it make it easer to fly with that setting. Would that setting mess up my high stick pitch.
Carl
Old 04-10-2008 | 12:28 PM
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Default RE: CP PRO Head speed

Why can't you just bring down the pitch curve in the normal pitch curve settings? Example:
Norm ptich curve: 33 42.5 50 75 90

That would bring your top pitch down to something more acceptable, you can fiddle with the top 2 pitch curve settings in the normal mode to make your pitch curve anything you want. I do mine with the motor unhooked and just leave the pitch guage on and lower the settings to get my desired pitch range in normal mode.


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Old 04-10-2008 | 02:17 PM
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Default RE: CP PRO Head speed

The +15 degrees is way too much pitch for that motor and would bog it down a lot. I have my pitches at -3 to +11 in normal and -11 to +11 in idle up mode. I dont' know why you are getting a different pitch reading in idle up and normal. With your settings you should get the same top pitch in idle up and normal mode. Does it look like you have equal distance on the main shaft under the head to swashplate and from the swashplate to the retaining collar in idle up at half stick? Does your servos start making different noises than normal at the top and bottom limits? I have my swash mixes at 60%. I tried what arrownaughtic was talking about with the pitch curve, but by the time I got +11 degrees the pitch curve was at 52ish. So I had to use travel adjustments to get +/- 11 degrees and keep the swashplate level at bottom and top stick.

Nick
Old 04-10-2008 | 02:35 PM
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Default RE: CP PRO Head speed

Ok I figured it out, I did it the swash menu,i lowered the swash pitch and got all the pitch settings set right.

Now all I need now is to figure out the D/R COMBI what is that for and i realy need to know
How to set up the D/R and EXPO so I can tame it down to fly it.
Aile 0 ?% + %?
ELVE 0 ?% + %?
Rudd 0 ?% + %?
What settings shoud I set them to to tame it down.
I see ther are 3 switches ,two top of DX6i outer and one on the front right. Do I have to move those 3 to get into EXPO after I find out what the settings are.
Please HELP
Carl
Old 04-10-2008 | 07:16 PM
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Default RE: CP PRO Head speed

Hey Carl,

I am at about the same stage as you, a couple of weeks ago, I was also trying to "tame" my CPP Pro as well...now I've finally managed to hover my first entire battery in a 6x6 area! Don't get discouraged, it'll get easier!

The biggest two things I did to tame my CPP was to put in some exponential, (I'll get to that in a sec) and to add one flybar weight to each side, it really helps slow down the response of the cyclic inputs quite a bit. You don't have to use the Eflite ones, I just got some DuBro ones, much cheaper, I think they were 1/16 collars, they worked fine.

Now, the other thing is the EXPO...if you put some exponential into the elevator and aileron, it will help to deaden the response of the right cyclic stick on-center quite a bit...I started off with about +25% on each. You can put that in without using any of the D/R switches, if you want. Just go to your menu for D/R + EXPO, and the expo settings are the ones on the right of the D/R, on the same line. Yours probably say INH, unless you have adjusted them already. Just highlight the expo, and raise the setting to about 20-25% on both the aileron and elevator settings, that will calm the on-center feel of the right stick quite a bit. Of course, you'll have to experiment, and find what works best for you, you may like more, or less that that.

You can actually play with that without flying the heli, just unplug the main and tail rotors, and watch the results as you change the settings...

Hope this helps, I hopefully helped someone for once, instead of ASKING all the questions!

Good luck with your CP Pro, I am having a blast with mine, now that I have it all set up!

Glenn
Old 04-10-2008 | 11:22 PM
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Default RE: CP PRO Head speed

Glenn
The expo setting is that + or - 25% and the numbers on the left should I just leave them at 100%. And the rudder expo did you change that also. I have a G90 and it worked good with the stock TX but I am haveing a hard time finding the right setting.
I was haveing a hard time with my pitch it was like 15 deg with the stick up in norm flight mode. I tried lowering the throtle high end down but i had it down to like 50 and I figured that was no good so I went into the swash mix and lowered the pitch to +33 to get it to 12 deg at high stick. Not sure if that was a good move or not. Mabey the travel Adj would do it ,I have the throtle adjust at +100%. That is what teck support gave me for my travel adj.
Thro +100
Elev +80
Gyro + 100
Aile +80
Rudd +80
Pitch +100
Not sure if thats correct or not.
The thing is driving me baty but I guess once i get the settings correct it will be worth it.
Carl

Old 04-10-2008 | 11:38 PM
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Default RE: CP PRO Head speed

The + on EXPO makes it less sensitive around the center and - makes it more sensitive around the center. You are going to have some very slow response of the pitch with 33%. Do you have two settings for the travel adjustment for each option? There should be one for the servo going down and one for the servo going up. I used the travel adjustment to limit the pitch and kept the swash mix up to 60% and it is pretty stable.

Nick
Old 04-11-2008 | 07:26 AM
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Default RE: CP PRO Head speed

Do I have to change both numbers in the D/R EXPO settings or is this ok like this.
Aile 0 100% + 25%

Or do I change both to 25%.

I put my swash back to 60%. I bent a shaft last night and after I get that changed I will mess with the travel adj to try to get my pitch set up .
Carl
Old 04-11-2008 | 02:04 PM
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Default RE: CP PRO Head speed

That is fine. Just leave it at 100%D/R and +25%EXPO.

Nick

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