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HelicopterAerial Photography and Video › Hitec Eclipse 7 and AP2000i
01-25-2007 09:37 PM  10 years agoPost 1
AceBird

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Utica, NY USA

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Has anyone succeeded in getting the AP2000i stabilizer to go to calibrate mode? If you have could you spill the beans?

Ace
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01-26-2007 02:15 AM  10 years agoPost 2
keithm

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Ocala, FL

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Just set the gain so that it is at minimum. Decreasing gain below zero takes the AP-2000i to OFF then CAL.

Keith

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01-26-2007 02:22 AM  10 years agoPost 3
46Taylorcraft

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AZ

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both of mine go into CAL mode as designed. gain slider has ATV set so that low end just barely places the unit in OFF mode and then a program mix with another channel/switch drops gain below this value activating CAL mode. Easy.

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01-26-2007 05:10 PM  10 years agoPost 4
AceBird

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Utica, NY USA

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Do either of you guys use the Eclipse 7?

I know what the requirement is for Cal, Off and gain setting for the AP2000i. Getting the Eclipse 7 to do it is my problem.

Part of the problem is I have the only two programmable mixers used to vary the gain on the stabilizer when I move the elevator and roll sticks. I used this scheme on the FS8. It gives you full stabilization just by centering the sticks, no switch to flip. Yet if you move any stick it takes off the stabilization the more you move them. The feel is like expo and I think it would be great for AP. Just move the heli where you want and then let go of the sticks. No fumbling for a switch.

However if I am not careful where I set maximum gain, the extreme ends of the elevator or roll stick could cause a calibration while the heli is 90 degrees and then when I center the stick the stabilizer would surely put it in! If I have to I can prevent this by setting CAL off on the AP2000i.

Another problem is the way Hitec sets up the ATV’s for switches. You don’t have the full range of the channel. The switch is split in two halves. In one position the switch is 0-50% and the other way is 50-100%. So if I want the switch to go from OFF to some percentage of stabilization I have to use the lower position as OFF and then the stabilization setting must be above 50%. Actually I can reach 46% but no lower.

So my question is what are you guys actually using for a gain setting? Is 46-100% a good enough range or do you sometimes use less than 46%?

Ace
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01-26-2007 07:04 PM  10 years agoPost 5
rerazor

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Mich.

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I know I have mentioned this before and I do have a Hitec eclipse 7 tx but I don't use it with my Api. Since you don't have a knob/slider I would use the gyro gain % setting. Yes you have to keep the tx in the menu/prog/gyro function but you could control the Api gain the same as if you were adjusting the gyro gain from 0-100% with the increase/decrease buttons. Yes, you will have to be careful that you don't push the wrong buttons etc... However that is the only way you can adjust the gain in a 0-100% increments with your Tx.

Or you might be able to set different fixed gain % depending on flight modes.

Or set the gain to 80% and just CAL with the gear switch etc..

Either way set it for higher then 46% if you have to. I think DJ uses close to 100% with good results.

Thats my 2 cents.

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01-26-2007 07:21 PM  10 years agoPost 6
46Taylorcraft

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AZ

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I think DJ uses close to 100% with good results.
I run 60-100%. Much of the time I'm at 90% or higher. But that's with a Logo. On my Raptors I can't go over 75% or it oscillates

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01-26-2007 09:32 PM  10 years agoPost 7
AceBird

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Utica, NY USA

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Yes you have to keep the tx in the menu/prog/gyro function but you could control the Api gain the same as if you were adjusting the gyro gain from 0-100% with the increase/decrease buttons.
That's the kind of thing I want to avoid. But if I were to do that then what do you use for your gyro gain? Can they be Y-connected? But that would make them both the same. No?
On my Raptors I can't go over 75% or it oscillates
What about 46%, is that low enough to start? If I can run with the gain 46% or above I might be golden. I will just calibrate on the ground. That's what I planed on doing anyway. I don't have the nerve to be monkeying around with calibrating the stabilizer while it is in the air.

Thanks for your help guys.

Ace
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01-26-2007 09:48 PM  10 years agoPost 8
46Taylorcraft

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AZ

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yes 46% worked but I usually had it at about 65% if I recall correctly. CAL on ground is fine if you're in wide open space, but if any buildings, cars, trees, etc nearby the CAL will not be correct. Better to put it in the air, trim it out and CAL.

Otherwise youre going ot have to trim anyway at which point it's pointless to perform a CAL.

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01-26-2007 10:08 PM  10 years agoPost 9
AceBird

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Utica, NY USA

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Otherwise youre going ot have to trim anyway at which point it's pointless to perform a CAL.
I could be wrong but to me the purpose of calibration is to align the sensor to the rotor plane electronically. I can do that very easily on the ground, like you say in a wide open field. Once that is done you never have to do it again, as long as you don't move the sensor.

If you calibrate in the air and then fly next to a building your calibration is meaningless. So what is the difference? Trimming is something you will always have to do with IR sensors. I don't see that as a problem. Fooling with trim buttons on a heli that is NOT stabilized is a problem for me. I would rather do it with the help of stabilization.

Ace
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