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AUSS1E · 08-15-2013, 09:06 AM

Hi guys, I just recently upgraded to hitec HS-5065MG cyclic and HSG-5084MG tail servos with a fairly new install zyx-s on a blade 450.

First thing I noticed was piro in either direction caused a pitch up tendency. Made sure the tail shaft was completely straight so I will see if that helps.

The other issue is I have got the swash level and getting the correct amount of pitch, but when I roll right I get around -8 pitch and left gives +18. It is significantly more in a left roll than the right that it is visible on the swash. I cant figure out how to correct that.

Any help is appreciated.

Dr. M · 08-15-2013, 10:49 AM

Do you have you swash servo arms at 90* at mid stick? Correct swash type selected on the zyx? Is your pitch gauge zeroed properly? I haven't seen any heli that can throw 18* cyclic...

Piro problem: swashplate not level, cg off, or piro optimization direction reversed.

AUSS1E · 08-15-2013, 01:08 PM

Thanks Doc for the info. I re-90'd the arms today and did some work on the swash. When the blades are folded together they are nice and level all the way around. Also get 0* on the gauge. Swash type is set right. So I will try it again today and see if any of the changes help.

I will try the piro again and see if they changes helped. CG is pretty much perfect.

08-15-2013, 09:06 AM	#1 (permalink)
AUSS1E Registered Users Join Date: Dec 2012	zyx-s help...more roll left than right and piro help Hi guys, I just recently upgraded to hitec HS-5065MG cyclic and HSG-5084MG tail servos with a fairly new install zyx-s on a blade 450. First thing I noticed was piro in either direction caused a pitch up tendency. Made sure the tail shaft was completely straight so I will see if that helps. The other issue is I have got the swash level and getting the correct amount of pitch, but when I roll right I get around -8 pitch and left gives +18. It is significantly more in a left roll than the right that it is visible on the swash. I cant figure out how to correct that. Any help is appreciated.

08-15-2013, 10:49 AM	#2 (permalink)
Dr. M Registered Users My HF Map location Join Date: Jun 2011	Do you have you swash servo arms at 90* at mid stick? Correct swash type selected on the zyx? Is your pitch gauge zeroed properly? I haven't seen any heli that can throw 18* cyclic... Piro problem: swashplate not level, cg off, or piro optimization direction reversed. __________________ CopterX 450 Black Angel FBL "Night Rig" \| ZYX v4.0 PRÔTOS 500 FBL "Sky Whip" \| Robird G31 Audacity P6 FBL "Phoenix" \| MSH Brain \| 12s Goblin Speed \| iKon

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08-15-2013, 01:08 PM	#3 (permalink)
AUSS1E Registered Users Thread Starter Join Date: Dec 2012	Thanks Doc for the info. I re-90'd the arms today and did some work on the swash. When the blades are folded together they are nice and level all the way around. Also get 0* on the gauge. Swash type is set right. So I will try it again today and see if any of the changes help. I will try the piro again and see if they changes helped. CG is pretty much perfect.

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