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HelicopterAlignOther › Tail Rotor Setup
12-01-2007 05:01 PM  10 years agoPost 1
T-ster

rrNovice

Allen, TX

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What is the correct way to set up the tail rotor? I would assume when the throttle is at idle the blades should be at 0 pitch. Is this correct?

Should the servo arm be 90 degrees at this point as well? If I have it set that way it appears the control will bind in one direction and not the other. So, I was guessing I want the pitch at 0 at idle and locate the servo arm as I need to to get the end points at each full rudder throw to not bind (and adjust the gyro limit to not allow binding either). Am I close?

Also, why does the last 1/4 of my rudder stick do nothing. It moves the tail rotor until the stick gets to 3/4 then it seems to max out at that point, even though the control isn't binding yet.

Thanks.

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12-01-2007 05:51 PM  10 years agoPost 2
techchris

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allen,TX USA

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no you dont want 0 pitch.you need pitch in the tail to maintain the tails position during hover.set it up in the mechanical center of the tail slider with the servo at 90 deg. then set you end points with your gyro not the radio atv.then you need to hover in rate mode and make linkage adjustment.thus is why you need help.

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12-01-2007 06:00 PM  10 years agoPost 3
techchris

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allen,TX USA

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i just wanted to add that your gyro needs to be in rate mode during all of your set up otherwise your end points,and center will be false like you are seeing

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12-01-2007 06:20 PM  10 years agoPost 4
casper7

rrApprentice

UK southeast

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If you set all the push rods to the length stated in the manual for the rudder and the servo arm and rear arm at 90 deg you will almost be there.

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12-01-2007 08:05 PM  10 years agoPost 5
T-ster

rrNovice

Allen, TX

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I've set up the linkage where the servo, bellcrank and tail rotor linkage is centered. When I adjust the limit on the gyro (in normal mode), I have full throw both directions with no binding. I have the control rod per specs from the servo to the bellcrank. The rear linkage is short by 3mm. I assume you check the adjustment by going to normal mode and hovering. If the tail holds that means you are on the money. If it drifts, adjustment to the linkage is necessary, corect?

By the way, I have had the heli flying, but the servo arm was not centered so I reworked it (and forgot to check the blade orientation prior to messing with it.)

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12-01-2007 08:47 PM  10 years agoPost 6
techchris

rrNovice

allen,TX USA

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you are correct

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HelicopterAlignOther › Tail Rotor Setup
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