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HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsV-Bar › Vbar on Trex 550 with Align DS650 tail servo...Tail gain question??
12-04-2012 07:15 AM  5 years agoPost 1
BladeStrikes

rrElite Veteran

Shelby TWP,Mi

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Just wondering if 64% tail gain is too low with the Vbar on Trex 550 with Align DS650 tail servo?I started with 80% and she wagged really good.Turned it down to 71% for the 2nd flight and she had a tiny bit of way.Didn't fly yet but plan on tomorrow so turned it down to 64% but not sure if thats too low?Should I move the ball on the servo horn in one hole or is 64% fine?
Ball is 13mm out from center like the manual says.Thought I would ask before flying so I can change it if I have too..
Thanks...

BTW,
I was always close to 80% with all my tail gyros and other FBL units,just not sure with the Vbar?

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12-04-2012 09:01 AM  5 years agoPost 2
coolice

rrKey Veteran

Northamptonshire, England

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Hey.

I run a shorter arm than the manual states to allow me to run my gain value higher. I can't check my 550's vbar to check yet, as its residing in my half built 550DFC, but I think I was around the 80%+ mark.

In the vbar setup what percentage is you tail travel limits set to?

On the 550 I mount the tail servo on the underside of the tail servo bracket. This then allows me to fit the control ball on top of the servo arm, closer to centre, without fouling the servo. With the servo as per the manual you need a longer arm to stop the control ball fouling the servo case as it moves.
.

Ian Contessa
Team Robbe SchluterUK
Midland Helicopters

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