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T-REX 500 › Align gyro question
01-18-2010 02:45 AM  8 years agoPost 1
just4fun

rrApprentice

utah

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Is it normal to have the gain at 30 in heading hold mode if it's any higher the tail wags any tips thank you

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01-18-2010 07:37 AM  8 years agoPost 2
Dale M

rrApprentice

Lakewood Ca USA

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Are you using Gyro sense menu or Gear channel? I usually use Gear channel and have values as low as 17 (jr770).. So a value of 30 would seem o.k. if it feels like it's working well.

AMA #99382

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01-18-2010 12:37 PM  8 years agoPost 3
Melnic

rrElite Veteran

Columbia, MD,USA

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is the tail holding? Hover? Crosswinds? Flip? Backwards flight?
That's the most important thing.

How high you can set the gain can depend on:
Ball position on the servo arm
Gyro
Servo speed
Servo torque
Slop in the tail and linkages
resistance in the tail and linkages
Headspeed
resistance to the tennis raquet effect

I like to have the ball moved in far enough so that I get full slider travel w/ as close to 100% servo travel as possible. To far in and you lose speed. Too far out and you lose servo resolution and torque.

I run a chinese weight mod to reduce load under rpm due to the tennis raquet effect.

If you use gyro sense, then the gain% is a value need to calculate from your setting cause the value is not linear to a % scale. Gear mode is kinda the same thing but many people reference gear mode value as the gain. That's what Dale is mentioning. Finless Bob has a video mentioning this somewhere.

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01-18-2010 09:30 PM  8 years agoPost 4
just4fun

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utah

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Ok I will try that and thank you for help

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