Issue with brand new 9188

2TOFLY · 05-25-2012, 05:39 PM

Hello all,
I purchased a 9188 from helidirect this time last year. I finally got around to installing ( I'm in the military....time is hard to come by) and I believe I got a dud. I plugged it into an AR700 into the rudder port along with my cyclic servo's just so I can get the servo wheels centered, using a 4.8 volt receiver pack. Cyclics worked but got nothing from the rudder. So I figured maybe not enough juice. Plugged in a 2s lipo and still nothing. Nothing still in the rudder port.Moved the servo to AIL and got a little bit of movement if I went full right cyclic. Is there anything else I can do? Or is DOA. I just took the wrapper of tonight!
Andre

saeed09 · 05-25-2012, 06:08 PM

The 9188 needs a proper specified frequency to work. Check the specs of the servo. If you connect it directly it wont work i believe.

I use same servos in my helis but via gyro (spartan ds 760 & quark). The gyro lets me to select the right pulse and frequency to feed the servo in order to make it function. With a bit of gain from the tx the servo will start to work.

Hope some one else can explain it better in other ways.

Sent from my GT-N7000 using Tapatalk 2

2TOFLY · 05-25-2012, 06:19 PM

Okay..makes sense. I'll continue with the set up with the SK 720.Thanks
Andre

Jamesppp · 06-01-2012, 01:49 PM

The Sk720 doesn't have that tail sevo listed in the setup tab so be sure to select the 540us that is paired with the 333 even though it is not exactly right it works well

backburner1955 · 06-02-2012, 01:32 PM

Plugging the tail servo into a receiver port would subject it to a 1520us center pulse at 200hz, the tail servo needs a 720us center pulse at 560hz.

05-25-2012, 05:39 PM	#1
2TOFLY Registered Users My HF Map location Join Date: Jul 2008 Location: Germany	Issue with brand new 9188 Hello all, I purchased a 9188 from helidirect this time last year. I finally got around to installing ( I'm in the military....time is hard to come by) and I believe I got a dud. I plugged it into an AR700 into the rudder port along with my cyclic servo's just so I can get the servo wheels centered, using a 4.8 volt receiver pack. Cyclics worked but got nothing from the rudder. So I figured maybe not enough juice. Plugged in a 2s lipo and still nothing. Nothing still in the rudder port.Moved the servo to AIL and got a little bit of movement if I went full right cyclic. Is there anything else I can do? Or is DOA. I just took the wrapper of tonight! Andre __________________ Outrage Velocity 50 Outrage Fusion 50 RCA EC-145 600 size...Coming Soon

05-25-2012, 06:08 PM	#2
saeed09 Registered Users Join Date: May 2010 Location: Msct mde	The 9188 needs a proper specified frequency to work. Check the specs of the servo. If you connect it directly it wont work i believe. I use same servos in my helis but via gyro (spartan ds 760 & quark). The gyro lets me to select the right pulse and frequency to feed the servo in order to make it function. With a bit of gain from the tx the servo will start to work. Hope some one else can explain it better in other ways. Sent from my GT-N7000 using Tapatalk 2 __________________ Trex 700N, Velocity 50 FB, Velocity 90 FB, TORQ servos,Futaba servos,JR servos,Spartan ds760, Quark, Dx7se, AR8000.

05-25-2012, 06:19 PM	#3
2TOFLY Registered Users Thread Starter My HF Map location Join Date: Jul 2008 Location: Germany	Okay..makes sense. I'll continue with the set up with the SK 720.Thanks Andre __________________ Outrage Velocity 50 Outrage Fusion 50 RCA EC-145 600 size...Coming Soon

06-01-2012, 01:49 PM	#4
Jamesppp Registered Users Join Date: Feb 2008 Location: Carrollton,Georgia	The Sk720 doesn't have that tail sevo listed in the setup tab so be sure to select the 540us that is paired with the 333 even though it is not exactly right it works well __________________ Compass7HV,Sk720HeliJive120HV Pyro 700 52L allHV Outrage 550: Scorpion 4020-1390,CC125A ESC,WR ESC Logo 5003D Scorpion Sk720 4020-1100, Blade130X MCPX TT E-620 SE x 2: Scorpion 4025-740 CCHV85 ,770/8900

06-02-2012, 01:32 PM	#5
backburner1955 Registered Users Join Date: Mar 2010 Location: Fresno, CA.	Plugging the tail servo into a receiver port would subject it to a 1520us center pulse at 200hz, the tail servo needs a 720us center pulse at 560hz. __________________ *To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.* AMA# 982814 To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. *To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.* *To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.*

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