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HelicopterAlignOther › 401 w/9254 gyro problem with 600N Pro
08-10-2007 01:04 PM  10 years agoPost 1
grimthenoble

rrApprentice

Ketchikan, Alaska

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Hey guys, Ok I have a GY401 with a 9254 servo in my 600N pro. Ive noticed that everybody has their tail linkage hooked on the farthest or almost farthest hole on their tail servo arm. Well when I do that its so sensitive it cause the tail wag really fast. So I put it on the first hole and it seems to be good enough to fly but once in awhile it will do a fast tail wag while in flight.. the gyro is set at the following, delay 0 limit 130 Digital ON and DIR Norm. The heli seems really smooth to me the blade tracking is perfect, everything on the head looks to be great all nuts and bolts tight the engine was in a different heli so it was properly brok in and is tuned good. I dunno any suggestions will be appreciated.

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08-10-2007 01:08 PM  10 years agoPost 2
ringram2077

rrApprentice

Birmingham, AL

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Have you tried reducing the sensitivity ? You should be able to use the outside hole. Assuming the gyro is initializing properly it should be easy to get working.

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08-10-2007 01:09 PM  10 years agoPost 3
BarracudaHockey

rrMaster

Jacksonville FL

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You want the servo linkage setup to give you slightly above 100 on the limit pot, thats probably going to be around 14mm, but I'm not sure about the T600.

Once you're there set the gain for about 50 to 60 percent to see how it holds.

You're running too much gain, in your case both mechanical and probably electronic.

Andy
AMA 77227
http://www.jaxrc.com

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08-10-2007 01:16 PM  10 years agoPost 4
grimthenoble

rrApprentice

Ketchikan, Alaska

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I have the delay set at 0 which they reccomend right out of the box with the 9254 servo. my delay is my gain/sensitivity correct? It is set at zero so I thought the only way to correct the tail wag is be shortening it on the servo arm right? thanks for ur help, Ill take it to the field to day to play around with it some more should I increase the delay to see what it does or no? Thanks

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08-10-2007 01:19 PM  10 years agoPost 5
ringram2077

rrApprentice

Birmingham, AL

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There is a gyro gain setting in the transmitter setup that determines how the gyro holds. What transmitter do you have ?

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08-10-2007 01:32 PM  10 years agoPost 6
BarracudaHockey

rrMaster

Jacksonville FL

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http://www.futaba-rc.com/team/team-tip-002.html

What radio do you have?

Do you have the single wire plugged into the gear channel or a channel that you can control the end points?

Sounds to me like you are running at 100 percent gain.

The gain is controlled from the transmitter, the delay should be at 0, that has nothing to do with the gain.

Also make sure you have DS to ON.

Andy
AMA 77227
http://www.jaxrc.com

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08-10-2007 01:34 PM  10 years agoPost 7
grimthenoble

rrApprentice

Ketchikan, Alaska

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I am using a Dx7 but I dont have that function activated so I just do it manually on the gyro itself. Or maybe I should use that function so I can fine tune it? Thanks for ur inputs

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08-10-2007 01:55 PM  10 years agoPost 8
captrlp

rrVeteran

Spanish Fork, Utah -​USA

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If you have the gyro on channel 5 of your receiver, then you will need to change the DX7 settings for "gear". Go into your "travel adjustments" and select "gear". As mentioned, lower to 60 for starters, both high and low. This is accomplished by throwing your HH switch.

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08-10-2007 02:19 PM  10 years agoPost 9
BarracudaHockey

rrMaster

Jacksonville FL

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You dont set the gain manually on the 401 itself, there is no such function.

http://www.raptortechnique.com/gy401-dx7.htm

Same concept as the Trex.

Andy
AMA 77227
http://www.jaxrc.com

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08-10-2007 02:56 PM  10 years agoPost 10
grimthenoble

rrApprentice

Ketchikan, Alaska

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Thanks Barracuda, that link helped out alot I finally got a good understanding of how to set it up. Now time to go fly it Thanks guys for ur inputs.. Ill start a new thread for another question I have

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HelicopterAlignOther › 401 w/9254 gyro problem with 600N Pro
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