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› Align GP780 Question
10-12-2011 11:20 PM  6 years agoPost 1
Stephen Born

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USA

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I have an Align GP780 gyro on my T-Rex 700e. I hit the limit button on my gyro and made sure both ends didn't bind. The servo wheel is 90 degrees to the servo. However, when it binds, there is a slight Angle of Attack on the tail rotor. I started it up today, and it went into a piro before I even took off. Shut it down and took home.

How do I get the tail rotor straight?

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10-13-2011 12:51 AM  6 years agoPost 2
tommmy158

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las vegas nv

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it may need to be reversed either by the gyro or on your transmitter

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10-13-2011 01:01 AM  6 years agoPost 3
RappyTappy

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Traveling the USA

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You have to make sure that you put the 780 in rate mode so the servo is centered. You said you have the servo horn 90 degrees in center which is good, but you also have to have the tail rotor bellcrank 90 degrees to the rod as well.

The tail rotor shaft slider should be approximately in the middle of the tail rotor shaft at the point when the servo is centered and 90 degrees to both the servo horn and the tail rotor bellcrank. Then set your limits. If everything else is stock (tail grips, tail shaft, tail slider pitch arms) then it should be able to work fine.

Of course, doesn't hurt to check direction of the gyro sense and correct rudder direction.

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10-13-2011 01:19 AM  6 years agoPost 4
Stephen Born

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USA

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Thank you. Just when I think I got it down, something throws me wrench. This is a new gyro, cant find the manual. I have flown the 700e with it a lot, but did some maintenance on the tail rotor and bearings. Put it back together and something just isn't right.

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10-13-2011 01:54 AM  6 years agoPost 5
RappyTappy

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Traveling the USA

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10-13-2011 02:03 AM  6 years agoPost 6
Stephen Born

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USA

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Thanks RappyTappy. Here is the manual I've been looking for. Thanks a lot!

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10-17-2011 10:37 PM  6 years agoPost 7
Stephen Born

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USA

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Gyro is set and reverse is set. She is nice and stable now. Thanks guys!

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