St. Charles, Missouri
My Posts: All Forum Topic
I have a XPS equipted JR 9303 and 5 receivers. One 6 channel on a foamy, one 10 channel on my 8 foot Telemaster Senior, one 10 channel on a 90 sized electric Raptor heli, one 8 channel on my Trex 450 Pro and last but not least a 8 channel on my Raptor e550 helicopter. On the e550 I had what I thought was a lockout way back and had a crash. Lost all control! After reading about "brownouts" I played with the heli sticks and made the receiver light turn to yellow (I think, I kinda forget what color it was!) and that made the servo's stop for about a second so I just figured my UBEC was not keeping up to the task at hand. I then added a second Castle Creations BEC at 6 volts and 10 amps. Got some 30 flights and then it happened again. I lost all control like the last time. Like the radio was turned off. When I got to the heli the battery had come loose and killed the power. I assumed that for some reason the two BEC just wouldn't work together. I finally said no BEC and went to a 2s1p a123 pack. Today was the maiden flight but also with a Rondo flybarless unit. I did this on my driveway to get the basic settings right and was going to wring it out tomorrow at the field. After about 2 mins of hovering a very wierd feeling heli (this is my first try at flybarless with no supervision! No guru's around here!) all of a sudden it started to drift to the right toward my fence. Again I had no control....nothing. I started moving all the levers and sticks but nothing helped. I even fliped the power off and on and nothing! All of a sudden it went full negitive collective and slamed onto the concrete but stayed on the skids. I still had no control. As I walked up on it spin 550mm blades at 2100 rpm (yea it was way freaky!!!) I could see the green light was still bright on the receiver and the blue like was solid on the Rondo but I had no control still. I stood there wondering what I could do and finally decided to grab a broom stick and try to unplug the main battery. As I walked up to it would jump a bit or the tail would spin a bit. This thing sounded like a pissed off hornet and every time I got close it did something to scare me off. After about 8 to 10 mins the battery started to give out and I was able to disconnect the main battery. I took the heli to my bench with the receiver pack still plugged in and the TX still would not operate anything. I noticed that the tail gyro was still controling the tail servo and it was working, the aileron and elevator gyro/servo's were working also. How can this be? I have no control but the receiver light is still on, the 3 axis Rondo gyro is still controlling the 4 servo's and I can't do anything from the TX???
So here are the facts,
This happened 2 times with the original receiver so for this flight I pulled the receiver out of the telemaster so that rules the receiver out...I think. The a123 pack was fully charged before this flight and after checking with my Watt meter I was still at 6.9 volts, almost nothing was used for this "flight"! The 9303 has a Zippy 2500 mah lipo battery that was charged at the same time as the receiver pack....it is at 12.5 volts. The model is a Raptor e550 6s electric helicopter. I bought it this last Feb to be my 3D machine. All of the components were bought new for it in March. It has 3 DS20xSMD servo's on cyclic and 1 DS20GMD on the tail. The power comes from a stock TT OBL43/11-30H and ACE BLC-75 ESC. At this point I seem to think the only thing that could be the culprit is either one of the 4 servo's or the ESC since these are the only things that have been there all 3 times. I have flown the trex 450 Pro, the 90 Raptor and the foamy since the other lockout/problems and they work fine. I don't believe it's and XPS issue other than the fact the light stays green and I have no control over the model.
How do I check these? Here are the strange things. The Rondo gyro was controlling the servo's when I moved it around. Could the servo's cause a problem and then work normally? The ESC has the ferrit ring on the line to the receiver but is this a fix all? Can interference cause a XPS problem and keep it locked out while the light stays green? The only thing I forgot to check that I wish I had was the back of my 9303 to see if that light was green. What do I do now? What ever is causing this has cost me a couple hundred in parts and I really don't know what to do. I don't want to just toss the servos and ESC I'd like a way to CSI this. I've since pulled on the servo's while moving them and nothing strange seems to happen. I'm clueless as to how I can check the esc.
Married with 2 kids, I am no stranger to pain!