Help mystery crashes
For those of you who like to solve mysteries. I have a good one.
I have a carbon cub s2 1.2m from Horizon Hobby. uses Electric 3cell 2200 . I have a new nx6 transmitter. I have flown it many times in the past with no issues. I crashed it nose down one day and had to order a new motor shaft and fuselage. I also replaced both aileron servos with new metal gear. After restoring it to like new condition I took it out to fly. First, I checked to make sure all controls and trims were set and the as3x was working . I tried to take of directly into the wind giving it throttle and a little up elevator. It became airborne and got about 4 feet into the air , at that point i gave it a little aileron and it immediately nosed up and dived to the right into the ground. I examined it and no damage. I tried again and the exact thing happened except this time it nosed up and dived into the ground on the left and broke the fuselage and bent prop. 2nd rebuild. I suspected maybe the gyro was bad and i believed the gyro to be in the controller . So i replaced the controller with a new one. All parts working again and testing out just fine for preflight. Once again it became airborne easily but as soon as i gave it any aileron it nosed upward and dived to the right. Damaging the fuselage again and needing repair. 3rd rebuild Once again i repaired foam cracks and double checked the Center of Gravity . I also made sure the battery is secured so it cannot shift. This time i had a friend who has been flying for 40+ years to help me with preflight check and also a range test. Everything passed inspection and test. As3x works, range test works, trims good. etc... My friend gave it a try to make sure it wasn't me causing the crash. He was able to get it about 8 ft. off the ground before giving it any aileron input . As soon as he did the plane nose dived into the soil. Not much damage . Just another crack in the fuselage and bent propeller. He and I both have no idea what it could be. Anybody out there have any suggestions? The only thing I haven't replaced it the receiver since it is separate and plugs into the controller. But the plane passed range test so i didn't suspect it. I tried takeoffs in both safe beginner mode and without safe mode. Nothing seems to help. ??? HELP PLEASE Tony |
I also replaced both aileron servos with new metal gear. |
I did not know this.
You are saying that as3x ignores the reverse servo setting? The new servos did NOT rotate the same direction and I did need to reverse the aileron servos to get them to move correctly. I thought that the as3x worked properly when i ground checked it. I will look at that again and see if as3x is moving the wrong direction. |
Originally Posted by ts_flyby
(Post 12668036)
I did not know this.
You are saying that as3x ignores the reverse servo setting? The new servos did NOT rotate the same direction and I did need to reverse the aileron servos to get them to move correctly. I thought that the as3x worked properly when i ground checked it. I will look at that again and see if as3x is moving the wrong direction. |
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