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HelicopterRadio - Spektrum DSM › AR7100R with DX7 setup
03-21-2009 06:10 PM  8 years agoPost 1
aadams1278

rrApprentice

Wilson, NC - USA

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I just got a DX7 and i'm considering getting the AR7100R for my heli. right now i do not have a governor or limiter, but i plan to get one later.

i've been reading through the manual and i'm trying to figure out if there's a way for me to set it up so that i can control the limiter rpm AND gyro gain from the flight mode switch.

the manual doesn't say that you can do this, but i don't like the idea of having to use the aux 2 switch to control rpm. i think this is possible, but i can't quite figure out how. i'm thinking i could make a mix that ties the gear channel (it must use gear channel for rpm adjustment on the AR7100R) to the flight mode switch, but then i cant determine how i would set two different rpms that way. i would be able to set one rpm when the mix is active, but how can i define the gear channel ATV when the mix is inactive? also this would make it really tricky to set the rpm i wanted since i'm not getting a straight ATV number from the mix.

right now the input select is set Aux 2=gyro, and Gear=Aux 2. with the gyro sense in auto mode. i THINK this may be the best way to make this happen, but i'm open to changing it if someone has a better way.

anybody got any tips on this?

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03-21-2009 07:48 PM  8 years agoPost 2
baddynergy

rrElite Veteran

sierra madre, ca-​usa

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Yes but you must run a program mix. Here is an example:

instead of the mix reading aux2 it would read gear. Then notice the switch.

I am out of town and not in front of my DX7. THis could give you an idea of where to start. I am sure others have done this and I am sure there is a finless video at the other site describing this process.

**Unattended children will be givin a shot of espresso and a puppy**

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03-22-2009 04:35 AM  8 years agoPost 3
Machinehead01

rrVeteran

Lower Michigan

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Funny, you should ask...

Hey pick up the newest RC HELI mag. the question your asking is covered. I set mine up to it and it works like a dream.

Thomas

"You judge according to the flesh; I am not judging anyone."

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03-22-2009 04:37 AM  8 years agoPost 4
aadams1278

rrApprentice

Wilson, NC - USA

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haha, that would be great if i got a subscription to rc heli! could you give me a summary?

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03-22-2009 05:01 AM  8 years agoPost 5
Machinehead01

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Lower Michigan

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Programing the system

1. at the input select set aux 2 to gyro & gear to inh.
2. subtrim to 0 upper and lower to 100%(gear channel)
3. prog mix 1, master to gear, slave to gear. set upper rate to +85% lower to -85%. set the sw to f-nr offset 0. will instruct radio to limit close to 15,300 rpm in normal flight mode.
4. prog mix 2, master to gear, slave to gear. upper rate +98% lower to to -95%, sw set to f-s12, offset to 0 17,000 rpm for idle 1&2 modes.

Revlimit disables in TH.

May sure that your curves in idle up modes are above where the limiter will shut down (25% or lower)

For a stable speed set curves about 5% higher than your set limits. This will hold the speed at a constant rpm.

Thomas

"You judge according to the flesh; I am not judging anyone."

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03-22-2009 05:12 AM  8 years agoPost 6
aadams1278

rrApprentice

Wilson, NC - USA

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thanks

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