450 Ar7200bx Complete Initial Setup For The Align 450 Dfc

ssoaos

New Member
Hi, I am new here.

I found the Youtube video from Tony for the AR7200BX initial setup for the Align 45o DFC. I found it very helpful and straight forward. Does anyone know if there is one for using the parameter menu?

Thanks!
Stanley
 

Tony

Staff member
Hey Stanley, welcome to RCH! I did create a Parameter menu video as well. Hope this helps.

 

ssoaos

New Member
Hi Tony,

Thanks again for the help.

Here is a little background on me. I have been building and flying RC heli for about 20 years but I still consider myself a novice. I have a Thunder Tiger Rapture 50, Align 450 V2 and a 250. Until two months ago I acquired a used 450Pro DFC on eBay for a decent price. I just finished rebuilding it with a new head assembly and all new servos. As you can see, as far as DFC goes, I am a DFC idiot.

I found your video straight forward and clear. I am curious after the parameter setting video, do you have video on transmitter set up for AR7200BX, and on? I understand that for AR7200BX setup you leave the transmitter alone, all the trims and limits are set on the AR7200BX, and that is all different from conventional CCPM birds that use swash mix on the transmitter. I notice you do have video on DX9 setup but that is for conventional, non BeastX/AR7200 setup. It would be nice if you have a list of the series from building the bird to maiden flight if you have it made. How do I search for it on the site?

Thank you!
 

Tony

Staff member
I have actually not made those videos because I have already covered it in other videos. You are correct, I use the DX9 and on my birds with a BX gyro, I set them up as follows. No mixing, use 1 servo 90º swash, or normal, depending on the Tx being used. Go into the flight mode (after setting up helicopter model type, name and so on) and turn the hold switch on. From there, enter into the main menu and turn the tx on.

In here, first thing you will do is follow the steps in the video to program it. With a new model, you have everything linear which is where you want it when setting up. Once you complete all setup, go into the Tx and set your DR/Expo. I know, it says to do it on the gyro, but I still do it in my Tx. Just make sure you don't limit it too much where you can control it. For me, on a 3 position switch, I set it at 70/+35, 86/+35, 100/+35. This is just my DR/Expo settings, change them to fit your flying style.

Then I set the pitch curve. I only mess with Normal and I change that to 46-48-50-75-100, the other 3 are left at linear.

Throttle curve, I set normal (with a good ESC mind you) to 0-75-75-75-75, idle-1 to 87-87-87-87-87 and idle-2 to 100-100-100-100-100

Gyro on the DX9 on a 3 position switch I set to +45/0/-45 for high, middle, and low on the switch. This allows me heading hold, no gain and rate mode. no gain and rate will allow me to center my tail blades before taking off.

And that is about all I do. DR/Expo and tail gain controlled by the Tx, the rest by the gyro. Hope this helps.
 

ssoaos

New Member
Hi Tony,

Thanks for your prompt reply.

In understood most everything above but could you elaborate your throttle curve setting? You recommend 0-75-75-75-75 so head RPM will be blocked down when pitch is increasing. Normally you would try to keep constant RPM, right?

Regards,
Stanley
 

Tony

Staff member
The reason I always run a flat curve is to help get a more stable tail. If you run, lets say, a linear curve, when you do a punchout, you are not only adding collective pitch, which puts drag on the blades, but you are also adding torque from the motor because you are telling it to ramp up the RPM's quickly. By running that flat curve, it takes one of those out of play and the tail can hold much better. And most importantly I can't stand the sound of the motor constantly going up and down in pitch lol.

It will also help with the "bobbing" up and down because you are only increasing pitch, and not RPM. And the 0 at the beginning is so you can shut your motor off. But, only run that curve if your ESC has a soft start on it. If you don't have a soft start, then do something like 0 30 75 75 75 so that you can gently ramp up the head speed. As long as your pitch curve is linear from mid stick on up, you will always be above where it finally settles into the 75% throttle and you will be able to maintain a constant head speed while flying.
 

ssoaos

New Member
Hi Tony,

Happy President's day!

I have my 450 DFC off the ground! Thanks for your help. I set up the tail in rate mode by adjusting the linkage first, like the old days. it offs the ground and straight.

I don't know how to setup the gyro sensitivity. I have the DX7s. By default the Gyro sensitivity was set by the front three position switch labeled 'Flap/Gyro'. The can change the mode by flipping through the position. But where do I set the %? The AR7299Bx internally router the Gear channel to the Gyro sensitivity. But the Gear switch on the DX7s is not affecting the Gyro and its the Flap switch. Do you have a old link explaining this?

With my other bird using the JR9303, the gyro sensitivity was set by the Gear channel and it seems more straight forward, at least for me.

Best,
Stanley
 

Tony

Staff member
In your Tx, go into your menu and you should see a Gyro menu. In there, it probably says Inh or Inhibit. Just click it and set the values. Let me know if you have any issues.
 
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