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Old 01-01-2009, 09:03 PM   #1
xptical
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Default DX7 Dual Rates

Can someone explain Dual Rates on the DX7 to me? I have Mode 0, Mode 1 and INH.


Could I set up NORM for Mode 0 of, say 50%, ST1 in Mode 1 of, say 80% and then have ST2 in INH which would be full deflection?


Reason I ask is that I'm thinking of doing some AMA Class 1 and I want to make hovering and FFF smooth using dual rates but still have ST2 for stick-banging.
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Old 01-01-2009, 09:23 PM   #2
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Ask and tho shall recieve.....
Did this as part of my JR770 vids.

Dual rates 101
http://video.helifreak.com/?subpath=...alrates101.wmv

And here is what Expo is about:
http://video.helifreak.com/?subpath=...me=expo101.wmv

Bob
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Old 01-01-2009, 11:29 PM   #3
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I need to watch the video a few more times, but here's what I found.

On a DX7, you have P-0, P-1, and INH. I expected INH to be "no dual rates" at all. Unfortunately, INH seems to default back to P-0.

See, I set P-0 to 50%, P-1 to 75%.

NORM was P-1, ST1 was P-1, ST2 was INH. I moved to full deflection and stepped through the flight modes. The servo would start at 50% (P-0), move to 75% (P-1), and then drop back to 50% (INH).


So, on the DX7, there seems to be no way to have three dual rates on the flight mode switch.
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Old 01-02-2009, 02:19 AM   #4
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Hey Finless, would you recommand expo and dual rate set-ups for noobs?
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Old 01-02-2009, 03:02 AM   #5
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I don't think it's a good idea for most people. If a noob wants a slower cyclic, it's best to use flybar weights and just generally turn down the swash menu.


The reason I want dual rates is so I can practice hovering patterns for AMA Class 1 but still be able to fly my heli all out if I want.
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Old 01-02-2009, 06:41 AM   #6
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Quote:
Originally Posted by Finless View Post
Ask and tho shall recieve.....
Did this as part of my JR770 vids.

Dual rates 101
http://video.helifreak.com/?subpath=...alrates101.wmv

And here is what Expo is about:
http://video.helifreak.com/?subpath=...me=expo101.wmv

Bob
I can't thank you enough for the info in these 2 videos! Like I say everytime I get on Helifreak.com - "Now I get it!"

Thanks tons...
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Old 01-02-2009, 09:51 AM   #7
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Bob
Were is the video on setting up dual rates and expo on idle up switch on DX 7 that you talk about in the second video on this post?
Thanks
Don
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Old 01-02-2009, 11:23 AM   #8
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Quote:
Originally Posted by oppie View Post
Bob
Were is the video on setting up dual rates and expo on idle up switch on DX 7 that you talk about in the second video on this post?
Thanks
Don
It's there! Watch again. Thats what P0 and P1 do.

Bob
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Old 01-02-2009, 11:27 AM   #9
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Thanks Bob I'll watch it again I just thought there was some more info on another Vid as you made some reference to it at the end of the second vid.
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Old 01-02-2009, 11:31 AM   #10
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Oooops wait..... I did do 4 videos on this subject. They are in the JR770 Gyro setup videos but here are the links.

Dual Rates 101
Video Link ->Dual Rates 101! (71 Megs)

Exponential 101
Video Link ->Exponential 101! (45 Megs)

How to setup Dual Rates and Expo on the X9303 (most radios like Futaba can also use this)
Video Link ->Setting up Dual Rate and Expo on the X9303! (50 Megs)

How to setup Dual Rate and Expo on the DX7
Video Link ->Setting up Dual Rate and Expo on the DX7 (65 Megs)


Bob
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