2nd flight was worse on higher headspeed like you said. Appeared to be oscillating on its elevator axis which is a manuals term for what we call nodding. I had this happen when switching to faster HiTec servos and solved the problem by turning the gain down in small percentages.
Just another thought, Does your receiver parameter settings allow either itself or the transmitter to control the heli behavior? I did switch to receiver control, still had to knock the gain down a little but not near what I did with transmitter control
Definitely worse on the second flight the first flight I didn’t teallu turn the head speed up because I had a bad tail gain issue. It’s oscillating on the elevator and aileron access almost like it’s jittering. It’s very strange. I just rebuilt the head and will test this weekend.
@@JoshKussman-pc6yt that’s a great thing to look at! I since figured out the issue.the servo HZ was selected wrong and since fixing it the problem has gone away!
That’s correct , recheck your set up and see which is a bit off on your setup , which I’m sure it is . I ended up taking the grip arm off and I noticed the aluminum key way is off very soft aluminum so I used ca glue on it and red locktite on the screw , It fixed my problem and have never had a wobble since .
I had the same issue with mine, no matter how much I changed the head gain it didn't fix it, a guy came up to me and asked to to slightly change the head speed, up or down it doesn't matter, I changed the head speed slightly higher and slightly lower and this stopped the wobble instantly and I could set the gains correctly then. It seems that only at certain head speeds this happens on the Oxy, I've also experienced it on my Oxy4 max.
Hmmm! Like a harmonic issue? The piuma does the same. Going up or down by 50 RPM can eliminate the wobble. But it’s almost like it’s jumping More then wobbling. I rebuilt the head and will test again this weekend.
@westhobbiesrc8051 It was like a full on low speed body shake, just like when the head speed is way too low with not enough gain, but this was at 2400rpm, if you continued it felt like it might shake itself to pieces, loading the head could stop it briefly but unloading would bring it back and gain adjustment did nothing. It's hard to see exactly what's going on in your video so I'm not sure
Hi, I had a tail wag issue which I could not solve with with any gain settings. It turned out to be the servo. When I pulled the servo off the heli although it felt smooth like butter, I did notice it felt a bit tight to move (compared with a same servo on another heli) I stripped it down cleaned and regreased all the gears. It solved the problem.
i suspect it might be the head locking up at higher headspeeds due to an issue with the thrust bearings. as the headspeed increases the thrust bearings have to work harder so i would look at them, for example if they dont have a washer between the thrust bearing to the regular bearing or if the thrust bearing races are the wrong way round (small id etc) this will cause binding.
I don’t know why the servo would act up more with higher head speed, unless you’re loading it more in transitions. After doublechecking the servo connections and loading the servo arms with your fingers, maybe somethings going on with the flybarless controller
That is a great point! And some thing I thought about. I have never seen a Servo ask different at higher head speeds unless of course it was a connection issue or vibration issue. I just rebuilt the head and going to try again this weekend. I’m also going to play with the HZ rate and see if that does anything.
Maybe rebuilding head will solve, but could be some harmonic vibration is affecting flybarless at high head speed….. You could even try another set of main blades as a process of elimination. I’ve definitely seen some jumping servos when the position sensor starts to fail
Is it shaking fwd to back (elevator) or side to side (aileron)? Because my Maverick did the same thing at higher headspeed. Changed the servos wasn’t it and also the head dampers. Also the FBL. Never figured it out. Eventually I sold the heli.
It’s more of a side to side jumping motion. I know it’s hard to see on camera but in person it gets violent after 30 seconds or so. Like one or two Servos are jumping up and down as it’s flying. Sorry to hear that on your Maverick, that is one I have not built, but I definitely want to.
So the guy that I purchased it from I know personally and he did crash it one time was it was more of a tip over then a crash but! The guy he purchased it from I have no idea lol
Hey Jeff, wherever you are flying today, needs to be your permanent field!
I wish! Maybe very soon 😉 it’s by my property. So if all goes well something new coming soonish
That is a gorgeous field.
Thanks!
Thank you for that!!
2nd flight was worse on higher headspeed like you said. Appeared to be oscillating on its elevator axis which is a manuals term for what we call nodding. I had this happen when switching to faster HiTec servos and solved the problem by turning the gain down in small percentages.
Just another thought, Does your receiver parameter settings allow either itself or the transmitter to control the heli behavior? I did switch to receiver control, still had to knock the gain down a little but not near what I did with transmitter control
Definitely worse on the second flight the first flight I didn’t teallu turn the head speed up because I had a bad tail gain issue. It’s oscillating on the elevator and aileron access almost like it’s jittering. It’s very strange. I just rebuilt the head and will test this weekend.
How did the head look?
I'd check wires between motoer and esc. I had two wires rub through the heat shrink at the connectors and made heli do some weird things.
@@JoshKussman-pc6yt that’s a great thing to look at! I since figured out the issue.the servo HZ was selected wrong and since fixing it the problem has gone away!
My Oxy 5 I had the same at high head speed I found that the main grip arm was the problem maybe try there
Great idea, where the blade grip arm bolts to the grip? What did you do to fix it?
That’s correct , recheck your set up and see which is a bit off on your setup , which I’m sure it is . I ended up taking the grip arm off and I noticed the aluminum key way is off very soft aluminum so I used ca glue on it and red locktite on the screw , It fixed my problem and have never had a wobble since .
I had the same issue with mine, no matter how much I changed the head gain it didn't fix it, a guy came up to me and asked to to slightly change the head speed, up or down it doesn't matter, I changed the head speed slightly higher and slightly lower and this stopped the wobble instantly and I could set the gains correctly then.
It seems that only at certain head speeds this happens on the Oxy, I've also experienced it on my Oxy4 max.
Hmmm! Like a harmonic issue? The piuma does the same. Going up or down by 50 RPM can eliminate the wobble. But it’s almost like it’s jumping More then wobbling. I rebuilt the head and will test again this weekend.
@westhobbiesrc8051 It was like a full on low speed body shake, just like when the head speed is way too low with not enough gain, but this was at 2400rpm, if you continued it felt like it might shake itself to pieces, loading the head could stop it briefly but unloading would bring it back and gain adjustment did nothing.
It's hard to see exactly what's going on in your video so I'm not sure
looks nice you will figure it out
Thank you! I think I did figure it out, will test this weekend!
Hi, I had a tail wag issue which I could not solve with with any gain settings. It turned out to be the servo. When I pulled the servo off the heli although it felt smooth like butter, I did notice it felt a bit tight to move (compared with a same servo on another heli) I stripped it down cleaned and regreased all the gears. It solved the problem.
i suspect it might be the head locking up at higher headspeeds due to an issue with the thrust bearings. as the headspeed increases the thrust bearings have to work harder so i would look at them, for example if they dont have a washer between the thrust bearing to the regular bearing or if the thrust bearing races are the wrong way round (small id etc) this will cause binding.
Try lower Integral gain or turn up/down style
Will do, just rebuilt the head and will try again this weekend.
@@westhobbiesrc8051 what head damper are you using?
I say turn up the giga watts and it will work itself out. 🤣JK hope you figure it out nice heli.
Thank you! I hope so too, I want to fly and enjoy this thing. Lol
I don’t know why the servo would act up more with higher head speed, unless you’re loading it more in transitions. After doublechecking the servo connections and loading the servo arms with your fingers, maybe somethings going on with the flybarless controller
That is a great point! And some thing I thought about. I have never seen a Servo ask different at higher head speeds unless of course it was a connection issue or vibration issue. I just rebuilt the head and going to try again this weekend. I’m also going to play with the HZ rate and see if that does anything.
Maybe rebuilding head will solve, but could be some harmonic vibration is affecting flybarless at high head speed….. You could even try another set of main blades as a process of elimination. I’ve definitely seen some jumping servos when the position sensor starts to fail
Hey jeff, I always love your videos, are you going to be getting the new Sab raw 420 competition soon? Can't wait to see a video on that
Thank you! I’m glad you enjoy the videos! I definitely plan to get a new 420 sooner or later. Hopefully sooner!
Is it shaking fwd to back (elevator) or side to side (aileron)? Because my Maverick did the same thing at higher headspeed. Changed the servos wasn’t it and also the head dampers. Also the FBL. Never figured it out. Eventually I sold the heli.
It’s more of a side to side jumping motion. I know it’s hard to see on camera but in person it gets violent after 30 seconds or so. Like one or two Servos are jumping up and down as it’s flying. Sorry to hear that on your Maverick, that is one I have not built, but I definitely want to.
I agree, seems like the head is the likely culprit.
I rebuilt the head and going to try again this weekend!
Put some pressure on the servos on the bench and see if it jumps
I did and can’t get the servos to move at all. Seems like a head or setup/gain.
Dans tes cablages, tu n'utilise jamais le condensateur des ESC HobbyWing fournit avec ? Un bonjour de la France.
I've wondered that too.
@chs2814 Pour moi ce condensateur élimine des parasites de l'electronique
Hello! No, I never use the capacitor. I personally don’t see how one single cap can/would do a anything to actually help.
Bro's having a bad flying day. Blames the servo! 😊
How did you know!?! You’re always supposed to blame it on the electronics never yourself
@@westhobbiesrc8051 ha! I can't do that. My flying is so bad, it's obvious!
Lol
Hi Jeff is the VBar becoming your new favorite radio .
Hello! Yes, it’s my go to now.
It's quite far , I couldn't see😂
Can I ask, where did you get those frame sticker?
Didn’t want it to stay near me if it is a Servo issue! A guy on Facebook made them a while ago
HI Jeff, Do you fly with the front boom clip? Did you glue it in?
Hello! Are you talking about the 3-D printed Insert that goes into the very front of the boom? If so, yes.
@@westhobbiesrc8051 ok, i was worried about it saying in, guess i should use it.
Willing to bet whoever sold the Oxy5 claimed it was never crashed!
So the guy that I purchased it from I know personally and he did crash it one time was it was more of a tip over then a crash but! The guy he purchased it from I have no idea lol