What could casue this? (crash of ultra sport)
10-07-2007, 03:36 PM
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What could casue this? (crash of ultra sport)
Hi
well i jsut crashed a kit plane i have a few questions,
9 channel pcm jr
ds821 elevator servo
The servo died, it just would not reply in a turn to approch it came back online (now im wondering that the h*ll is going on ) as i do my approch i loose it again and the plane goes in,
The rx never went into failsafe.
What cause cause one channel to die and not the rest i had controle of the ail and trotal alol the way down...
After recovery servo works again
what could cause this?
Steven
mods- i didnt knwo were this could be posted so i put it here feel free to move it to the radio mfg forum or the crash and rebuild.
well i jsut crashed a kit plane i have a few questions,
9 channel pcm jr
ds821 elevator servo
The servo died, it just would not reply in a turn to approch it came back online (now im wondering that the h*ll is going on ) as i do my approch i loose it again and the plane goes in,
The rx never went into failsafe.
What cause cause one channel to die and not the rest i had controle of the ail and trotal alol the way down...
After recovery servo works again
what could cause this?
Steven
mods- i didnt knwo were this could be posted so i put it here feel free to move it to the radio mfg forum or the crash and rebuild.
10-07-2007, 04:00 PM
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RE: What could casue this? (crash of ultra sport)
I would check your servo lead out. At times, the metal connectors within the plastic connector case get worn out. When this happens it will cause intermittent failure like you are describing. I've had it happen too -- sucks big time when you're having to land at full throttle...
See, the servo lead end(s) work on friction fit, the lead itself is a female end -- the RX end is a male end (little needles sticking up). When the female end loosens up there tends to be slop created.
See, the servo lead end(s) work on friction fit, the lead itself is a female end -- the RX end is a male end (little needles sticking up). When the female end loosens up there tends to be slop created.
10-07-2007, 04:04 PM
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RE: What could casue this? (crash of ultra sport)
Thanx,
il check that out.. the elevator had no extensions to get it to the rx it was direct into the rx
il check that out.. the elevator had no extensions to get it to the rx it was direct into the rx
10-07-2007, 04:25 PM
#4
RE: What could casue this? (crash of ultra sport)
Also check both the servo connector AND the receiver for any corrosion/oxidation. Either a loose fit , corrosion/oxidation or a combination of the 2 could cause this. A fully charged battery would have enough juice to go through the corrosion/oxidation, but later in the flight a less than full charge may not be able to get through any stuff there, or only intermittantly.
10-07-2007, 04:39 PM
#5
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RE: What could casue this? (crash of ultra sport)
Once in awhile the servo motor itself will quit usually intermittently at first. Then sooner or later it will quit completely. see if you can hold the servo while you try and work the servo simulating a load on the servo and see if it quits. It may continue working and if it does to bad. if it quits at least you know what the problem was.
Couple of the other ideas previously posted could have caused the problem also. such as bad connection, low battery, possibly a stall.
Couple of the other ideas previously posted could have caused the problem also. such as bad connection, low battery, possibly a stall.
