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Blade 500X Blade 500X Helicopters Information and Help |
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04-16-2014, 10:15 PM | #1 (permalink) |
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Join Date: Apr 2014
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tail wag=bad beast?
HELLO People. I bought a 500x and from the get go I've had really bad tail wag. Ive spun up the tail with no main blades and the tail is vibe free. I've gone up and down on the gyro menu on my dx9 with no help. I've changed out everything but the tail grips to aluminum (those will be in on Friday. Hh sent me a new servo to try and that didn't work. Could the beast x be bad? I added 72mm revo blades and like I said its super smooth on spool up no vibes.i added a thin washer to the end of the tail shaft to clear up some slop otherwise she's tight. Im calling hh tomorrow and will see if they will send me a new beast. Any other things to try?
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04-17-2014, 05:50 AM | #2 (permalink) |
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Give these Items a try....
I had a bad wag also on my new 500X!... After reading everything you have done to try to fix it, you might try to run your normal throttle curve to: 0-60-80-80-80, check that your belt tension is not to tight, and give it a good spray of silicone, run your main and tail blades just a little tighter, back off the tail case screws just a little,check the balance on both main and tail blades, let me know the out come, as doing this to mine really calmed down the wag a whole lot....
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Raptor 50 Titan,Align Trex 450 Sport V2, Blade 500X, Blade Mcpx V2,Blade 180 CFX,Traxxas Aton Quad,Blade 230S,Mia Microflight Gyro Copter,Jr 8103, Spektrum DX8,Spectrum DX7g2... |
04-17-2014, 07:04 AM | #3 (permalink) |
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Join Date: Apr 2014
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I will give the new throttle curve a try. I've backed off the screws on the plastic tail with no luck and with the aluminum Iddon't think that would be a good idea to leave those loose. I keep coming back to the beast x being bad. The slider is smooth. One thing I did notice when Ihad it apart is the plastic gear on the tail shaft looked like the teeth were slanted the opposite way the blades are. If you look at the teeth of the gear there not flat even if you added a level but slanted slightly away from the blades. I'm going to bring that up to hh as well when I call. If there is no vibes the beast x seems like is the issue. Has anyone else got a bad beast with there bnf?
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04-17-2014, 09:12 AM | #4 (permalink) |
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Join Date: Aug 2010
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A tail wag, as defined, is normally due to too much gain in the tail system. This can be both gyro gain and mechanical gain (dependent on the servo arm length, tail blade length.....)
Other possibility is that something is binding under a load-- the way to see this is to spool up the hell with the main blades off and the landing skids firmly anchored down. Unclip the control rod from the servo horn (before spooling up of course!), and then see how easy is for you to change the tail pitch. Some remaining slop is a possibility, but it sounds like you have looked at that. I suppose it could be the BeastX, but it would be the last thing to be suspicious of I think. Make sure any wires coming off it are not too stiff and tied down too close to the BeastX itself--you are trying to avoid any vibration getting into it. Finally you could always change the adhesive tape to the 3M 4011 tape, but AFAIK, people aren't having a lot of issues with the 500X stock tape. |
04-17-2014, 09:12 AM | #5 (permalink) |
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Really doubt it could be a Beast issue,check your front belt rollers, mine were tipped rearward a little, they must be exactly at 90 degrees...check balance on tail blades...
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Raptor 50 Titan,Align Trex 450 Sport V2, Blade 500X, Blade Mcpx V2,Blade 180 CFX,Traxxas Aton Quad,Blade 230S,Mia Microflight Gyro Copter,Jr 8103, Spektrum DX8,Spectrum DX7g2... |
04-17-2014, 10:19 AM | #6 (permalink) |
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Join Date: Apr 2014
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I've checked the rollers and there fine. I've moved the beast to the top block behind the servo. Switched to the Greg 3m tape. Talked to hh and I said I would wait tell my aluminum grips come and try that first before I send in the beast. Im going to try raising the throttle curve and going to take apart the stock grips tonight. Has anyone replaced the crappy 3 piece bearing and replaced them with shielded bearings? Has anyone played with d/f in the setting from where the stock settings are in the manual?
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04-17-2014, 01:08 PM | #7 (permalink) | |
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Join Date: Aug 2010
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Quote:
You should make the assumption that the actual design is ok, and that you have some mis-adjustment somewhere. Did the wagging exist before you moved the AR7200BX? |
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04-17-2014, 03:56 PM | #8 (permalink) |
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Join Date: Apr 2014
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Yes it existed before I moved the beast
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04-17-2014, 04:47 PM | #9 (permalink) |
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Join Date: Apr 2014
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I took apart the the grips and everything seems fine. I then spooled it up and by hand moved the slider. I would say it moved really hard. Without the motor going its silky smooth. What should I look at to make it not so hard to move under power?
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04-17-2014, 08:11 PM | #10 (permalink) |
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Join Date: Feb 2013
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OK. I'd go with ahahns assumption, and I might add that from experience over the last 3 years, a BeastX just doesn't wiggle when it starts to dislike the machine it is stuck on. It will go the mustang way rather and roll the entire horse, not just the tail.
Instead, on the 500x, there is usually a good amount of slop in the tail blades; they can be moved around 1-2 mm without actually moving the rest of the mechanics, and I think it is this degree of freedom that can lead to tail wag. This will always be irregular, and mild. No shaking up, just a bit of going to and fro again, with a second of delay in between. I do believe that you spent a good deal of time checking the mechanics. However - could you verify that the tail slider disc, the one where the two little notches run in, is the "loose" point? I thickened those notches by adding a small dab of CA glue (ugly, but it works) and my wiggle was gone. I did that on two of my 500x's with the same result. Since the slider discs are free to revolve around the tail spindle, it is OK if they bind a bit with those notches. In short, find the place where the tail blades get their freedom in movement, and eliminate that slop. |
04-17-2014, 08:11 PM | #11 (permalink) |
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Join Date: Apr 2014
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I took apart the blade grips and they look ok. I spooled it up without the slider attached and it was pretty hard to change the pitch.
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04-18-2014, 03:07 AM | #12 (permalink) |
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Join Date: Feb 2013
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OK, I'm out. Don't know what it is.
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04-18-2014, 09:27 AM | #13 (permalink) |
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nothing is making any since whatsoever!...
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Raptor 50 Titan,Align Trex 450 Sport V2, Blade 500X, Blade Mcpx V2,Blade 180 CFX,Traxxas Aton Quad,Blade 230S,Mia Microflight Gyro Copter,Jr 8103, Spektrum DX8,Spectrum DX7g2... |
04-18-2014, 09:30 AM | #14 (permalink) |
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Join Date: Jan 2006
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What TX?
Can you tell, by the lights, if the tail gain in the BeastX is changing when you change the gain from the TX (the LED's will change)?.
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04-18-2014, 09:55 AM | #15 (permalink) | |
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Join Date: Aug 2010
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Quote:
This bird has the chinese weights (the bolts that hold the tail blades on the tail grips) that should reduce the force needed from the servo to change pitch. However the force isn't going to be zero. Normally you still want a little back pressure to keep things tight, which is why a some slop can go away when the hell is running. So it is possible that what you feel is "normal" back pressure. However, assuming something really is sticking, I'd assume some bearing in the tail grip is most likely to blame. I suppose I'd try by pulling one of the tail blades (loading the bearings in that grip). and then twisting the blade to change the pitch. This is still with the control rod link off the servo ball! Then try the other tail blade. Compare that to what it feels like by twisting the blade without pulling on it (=unloaded). |
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04-19-2014, 05:40 PM | #16 (permalink) |
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Join Date: Apr 2014
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I was able to get the wag to stop but now I'm having another issue. During flight the tail servo will all of a sudden turn left(if your looking at it strait on) and will lock into that position. I was able to land it but had to fight it. I can move the stick and it will go to the right but once Iet off the stick it iimmediately goes all the way to the left. I did reset the end points (e). I also moved the ball on the servo arm to the closest hole on the servo. I swapped out the other tail servo they sent me and within a few mins of flying it happened to that oone as well. This doesn't happen right away but after a few minutes of flying.
To stop the tail wag I did install the aluminum tail grips and then I added super glue to the tail pitch slider pins. Not sure if both of them or one or the other solved it but huray that's fixed! |
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