How To Fix Tail Wag! 

thanks for posting this, its nice to see rc Helicopter fix video, instead of those drones thats been taken over rc helicopters.

Really appreciate you channel and set-up tips. I’m new into flying helis and am having all sorts of issues trying to get the right set-up. By watching your videos it’s helped me so much. Thank you for your hard work, wish I was in a better position to support you more.

This reminds me of Ray’s heli tech videos (on dvd) that I used to first become skilled with rc helis. His main message was make everything “kissy, kissy” which always made me laugh.But he was right. Also Finless Bob for being a great teacher on video. Great stuff!

Awesome stuff, I couldn't see a wag at all but this is great info thanks so much....keep stuff like this flowing on your page.

Some great advice here Jeff - good job and thank you for the contribution sir! I concur completely with your advice - 'Mech then Tech' for any problem like this.

Hey Jeff! I appreciate the good video, really helps alot! Greetings from Sweden

GREAT INFORMATION thanks for sharing

Thanks for the tip. I couldn’t eliminate the tail wag on my Raw420 and Logo550se, lowering the motor gains solved the issue 👌

Super informative thank you for this!

I’m getting a wag on my new max. I think my linkage is a lil tight being new and all. I did shorten the rod to get a lil positive pitch at center and that helped. Do you size your ball links? OMP links are really tight. Tail servo is cold on the few hovers I put on it, but the cyclic servos feel a bit warm… Thanks again for these great videos!

I built my Trex 450L back in 2014 and flew it a couple times. It has tail wag. It has the Align flybarless Gpro gyro. I thought this could be the issue so I bought an Ikon for it. The heli and the Ikon have been sitting for nearly 10 years. I am now in the process of swapping the gpro for the Ikon. I'm hoping that will help but I'll also double check mechanics as you recommend in this video.

hey there i am looking to add a fireball to go alongside my Kraken 700 and since there aren’t many good reviews and overview videos on the Fireball I would love to see you do a video on it! Love the channel and videos are always great!

Thanks for this I haven't flown mine yet to try the settings you told me to try . If that doesn't work I have a hobby wing 130a esc and the store.gov is default so are my p I gains what do I do if it still wags a bit with those gains thanks in advance from the uk .

You really offer a great wealth of information. Thank you so much for that! I just ordered my first tail belt driven heli (raw 420). How much flight time should I allow before the "new tail tightness" will be gone?

Awesome Video with many great tips! However, I have a different problem on my Kraken 580 - I have high tail vibrations and my belt flops around alot, no matter the tightness. It also happens with no swash and Head mounted. This (i think) startet happening after a crash, after wich I swapped all shafts and spindles, which are all confirmed straight now. It also happens with just the spindle for the tails and no grips etc. on there. All bearings seem to be fine, I checked them a couple of days ago. I also have high vibrations coming from the motor (Xnova Lightning 4025 560kv), which I got serviced. Results of that came back perfect - however, my Brain tells me that there are high vibrations coming from the motor - with just the motor running, no pulley on the shaft. I ruled out the governor (ran it without the governor), tested different timings on the esc (YGE Aureus 105A) - all with no change. The guy I sent the motor to, also said, that he observed similar issues with a brand new Xnova-Motor just a few weeks ago - where the vibration analysis of the brain showed high vibrations, but the motor ran perfectly on his testbench. According to him, the shaft of the motor is also perfect, with just a few micrometers of runout. I paid for the service, so him just refusing a warranty issue or something like that is unlikely imo. My current thesis is, that the vibrations from the motor cause the belt to swing, which in turn causes the vibrations on the tail. I currently have no way to prove that thesis tho. Any pointers would be highly appreciated, as I couldn't fly this thing for 4 months now...

Hey Jeff! Watched this video a few times chasing a tail wag of my own. You mentioned the esc gov potential causing a tail wag. When adjusting the gov gain would you adjust both the P and I gain or just one of them? Thanks for your awesome videos!

Not a wag question but a tail blade placement question. Since tail rotors turn CCW, shouldn't the thicker side of the airfoil, be the leading edge? I've seen them both ways but I thought I'd ask an expert. Thanks.

Thank you for this. I have a tail wag on a KSE that I haven't been fully able to get rid of I suppose the one difference with a three bladed head and tail is all the gains would be lower across the board? Including governor gains?

Hey Jeff! Hope you're doing okay, thanks for making this video as well. Will you be doing a build series on the new Raw 500 coming out? I'm really interested in that model and I want to know what your thoughts are on it?

Amigo o servo de calda deixando em 90graus já fica configurado?

I would lower the I gain if it wags like shown in the video. High P gain create fast and loud oscillation, high I gain creates slow wags. Either increase P gain or reduce I gain would eliminate the slow wag.

Okay, so please don't make fun of me for asking this and I am only asking because I'm trying to learn, but is this a solvable problem with a fixed pitch tail rotor? Direct drive motor with no actual physical linkage between head and tail rotors. The problem is most persistent when there is even the slightest of wind, and I suspect it is the gyro trying to compensate, but are there settings that I can input to the transmitter that might alleviate these symptoms? For context, this is a very nearly brand new helicopter (Blade 230S) straight out of the box, working with factory settings and running off of a spectrum DXs transmitter. I have been flying four-channel Helis for a number of years so I am sure I know the controls well enough but I can't get rid of that annoying tail wag. This is my first fully collective 3D capable helicopter. Thank you so much for your answer and your time

Great info! Mine wiggles on spool up, but if I push through it, it' flys stable without wag. Main blades seem to be equally tight in their grips. Lower gain?

Hey Jeff. Thanks for all the awesome videos. Give me your thoughts on this. 6s Kraken 580, tail setup all done correctly, flight characteristics on the tail normal in all 3 banks, rock solid on the punch out. I’ve never had this happen before on any other model but in very high speed forward flight I am getting a high speed tail fluttering. Surprised something didn’t break. Was the first 3 flights on the machine. Haven’t had time to get it in the air again yet. What do you think? Governor gain issue. Generally I’m not flying at top speed but have to test the limits of the machine. 12s Raw 580 hasn’t done this. Both on Vbar. I built the Raw the Kraken was purchased as a BNF.

Hey jeff, do u adjust the governer gain first or adjust the fbl tail gain?? How do i tell if the governor tail issues??

Hey can you tell me please what goblin 380 buddy tail gear ratio 21T what number for ratio do on ? Please thank

Friend, thanks for answering. Please tell me, when using V-BAR NEO, does the tail 🤏 wag a little when the helicopter 🚁 is hanging in place?

Hope this isnt a bad question. What flybarless unit are you using? How do you use your Tx to set gain . I use the software on pc for my iKON2 to setup, and Bluetooth app on my phone to adjust in the field. I’d rather use the TX.

On my power xl 550 it's not a wag issue I have it's more of the tail slowly moves to the right at mid stick im having a difficult time figure out what that could be. Tail will move to the right then when I hit right stick to center boom towards me it will slowly move right again with no input. I've tried increasing head speed no matter what it keeps doing it.

Thank you. Have you ever used V-BAR NEO?

Did you fix the porpoising on your other one that was running 14s?

@WestHobbiesRC Can a slow tail servo cause tail wag?

Stupid question, but what is your throttle/pitch curve in normal mode? I have never been able to setup that nice low speed headspeed hover.

Wow, what a hit. I have RAW 580, Brain2, HW 150 (and I use its governor), and a tail wag problem. Mechanics is fine. You said to try lowering internal governor gain - did you mean to lower gain in HW? Or did you mean the problem can arise if one uses Brain's governor?

Oh man my raw is still on the shelf. I’ve just finished crimping the wires and now i only needs batteries

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Eq3qLRQlcJIT.htmlhank you for the video. After 2 days of "arrogance" I couldn't get rid of the tail-wag on my Tarot 450 DFC... I skipped the first thing you did in the video, which was check for stickiness and binding. This particular tail doesn't have all the ball links like the larger helis, and I had the screws just a bit too tight. Redid them, let the Locktite dry, and just went into the perfect hover! I kept thinking it was the Vbar... lol.

I only get tail wag after i have completed my stick movement, its in my newest video. Let me know if you have any ideas