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-   -   Shuttle Z Troubleshooting (https://www.rcuniverse.com/forum/hirobo-support-forum-477/10382651-shuttle-z-troubleshooting.html)

mike79 03-06-2011 01:11 PM

Shuttle Z Troubleshooting
 
Good Afternoon everyone,

Let me begin by stating i have searched my heart out for an answer before posting. I hope I do not repeat a post as I have seen it is looked down upon by the veteran members. I have a Hirobo Shuttle Z...obviously. I am not a rookie pilot, but I'm not fully experienced yet either. It starts and run fine. The concern I am having is that the heli spins left. Nose left tailright. I have tried fullright trim, I have even loosen the tail rotor and moved it so the pitch was max right turn, meaning it could mechanically go no further even with the radio command. It was forced right. The heli still spins left.... http://www.rcuniverse.com/forum/js/f...used_smile.gif . I know about ground wash and just the fact the heli spinsbecause of p-factor. This isnt it. I have a mechanical gyro installed. Ihave tried with the gyro turned on and off. No change. I haveordered a HK401B to replace it but I seriously dont think the gyro is involved. What am I missing. I cant even hover with the heli spinning leftasfast as the rotors.http://www.rcuniverse.com/forum/js/f...eeth_smile.gif I have attempted some pics that are on photobucket and IMG link them here...hope they work. Thank you for any replies.
http://i952.photobucket.com/albums/a...i/SDC10726.jpg
Gyro
http://i952.photobucket.com/albums/a...i/SDC10728.jpg
http://i952.photobucket.com/albums/a...i/SDC10729.jpg
Full right trim
http://i952.photobucket.com/albums/a...i/SDC10731.jpg
Force rotor to push right no matter what.
http://i952.photobucket.com/albums/a...i/SDC10730.jpg
Thank you!

im_a_rcav8r 03-17-2011 04:22 PM

RE: Shuttle Z Troubleshooting
 
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman" size="3">Hard to tell by looking at the photo of the tail what way the blades are pitched.</font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt">

<font face="Times New Roman" size="3"> </font></p></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman" size="3">First a few qualifying questions:</font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt">

<font face="Times New Roman" size="3"> </font></p></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman" size="3">Did you fly this helicopter without this problem and then suddenly this left spin began to happen?</font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt">

<font face="Times New Roman" size="3"> </font></p></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman" size="3">Have you tested your gyro with the radio on but the helicopter not running (move the nose left, gyro moves tail input for right correction?</font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt">

<font face="Times New Roman" size="3"> </font></p></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman" size="3">Is your gyro reversed?<span style="mso-spacerun: yes">  </span>Is your tail servo reversed?<span style="mso-spacerun: yes">  </span>Is your tail servo stripped? (test by holding some counter pressure on the control arm while moving the servo to full left and right)</font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt">

<font face="Times New Roman" size="3"> </font></p></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman" size="3">Is the belt driving the tail in good working order?<span style="mso-spacerun: yes">  </span>Is it slipping under load?</font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt">

<font face="Times New Roman" size="3"> </font></p></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman" size="3">This is a very odd thing to happen – especially since you said you locked the tail rotor in a position that should cause the helicopter to spin right and it still goes left.<span style="mso-spacerun: yes">  </span>Are you sure the tail is spinning the correct direction?<span style="mso-spacerun: yes">  </span>The belt can be installed in such a way that the tail spins clockwise or by giving it a twist and replacing it on the pulley, the rotor will spin counter-clockwise.</font></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt">

<font face="Times New Roman" size="3"> </font></p></p><p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font size="3"><font face="Times New Roman">Good luck and when you find the problem please post it so we all can know the answer.<span style="mso-spacerun: yes">  </span></font></font></p>

AKPhill 04-29-2011 08:24 AM

RE: Shuttle Z Troubleshooting
 
Have you tried to reverse your gyro
I had similar problem and that cured mine from fast rotations
then I put a gy401 futaba gyro on and the tail is rock solid now

Kaos 04-29-2011 02:14 PM

RE: Shuttle Z Troubleshooting
 
Looks like you need to reverse your servo. In your picture, the tail rotor blades appear to be pitched for left yaw. I believe they should be the opposite.

-Kaos

mike79 04-29-2011 05:08 PM

RE: Shuttle Z Troubleshooting
 
Hello Everyone! Sorry for the delayed response,work, kids, work,we all know. Soo, I failed to state I got this heli free. Yep it was given to me. So after I posted, I reset the radio... yep. Dont know what was in it but it didnt like it. Soo knowI have a fixable concern. The famous gyro spin. Before I went any further I took it to a local flying field and had the guys look it. I joined the AMA and their cub as well. The fixed it right up. Well...it is a Shuttle with a mechanical gyro and s5101 servos. They did their best. =]. Thanks for the replies.

Kaos 04-29-2011 05:53 PM

RE: Shuttle Z Troubleshooting
 
Glad your local club could help you. What was wrong with your Shuttle? I own a Shuttle ZX, which is basically the same thing, and I can see that your tail rotor linkage was way off. Did your club members show/teach you what was wrong with your helicopter?

-Kaos

mike79 04-29-2011 05:58 PM

RE: Shuttle Z Troubleshooting
 
They didnt sit down and show me. They did it in a way of....fixing it but did not leave me behind. If I had to do it again, I could up to the pitch curve, throttle curve part in the new radio. The problem with the heli....pretty much everything. It looks to never have flown in that state, and would have never have floe if I tried. It was pretty much a complete setup fromt the beginning. If it could be adjusted or reversed ...it was.

Kaos 04-29-2011 06:10 PM

RE: Shuttle Z Troubleshooting
 
Well, bummer they didn't fully explain what was wrong with your Shuttle. You do need to learn this stuff and mentoring at your local RC field is a good place to gather valuable information. If I were you, next time out there I would ask what was done to your helicopter to make it work.


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