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HelicopterMain Discussion › Lockout
01-24-2007 05:24 AM  10 years agoPost 1
philthewrench

rrApprentice

Westchester Co. NY

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Any ideas?

It's a raptor 30 with a jr pcm rec., fresh batteries(i checked with a meter after crash) and a 9303. I was in a stationary hover, just off the ground a few feet for maybe 30 seconds when it wen 90 deg. right and then i was locked out. Nothing. Just rolled right and slipped into the ground, watched my first chicken dance.

I went up and put a foot on the skid and again tried the stick and t-hold but nothing again! So I pulled the fuel line, noticed the 401 blinking and the voltage minder green, but sill no movement. Snapped the power switch on the heli off and on now all working fine.

I was kinda cold this morning, about 25 deg. but I've flown colder, and on the bench i was working the sticks pulling wires and such but no failure.

Now I'm worried. Will i put it together to have the same problem? Is this normal for PCM?

Thanks

Phil

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01-24-2007 05:33 AM  10 years agoPost 2
dkshema

rrMaster

Cedar Rapids, IA

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Stick the radio (all of it) in the fridge for awhile. Get it cold. See if you can get a repeat performance with a cold radio.

The blinking gyro LED is a bit of an odd clue.

And how did you set the failsafe feature to respond when it is needed? Did the receiver actually respond correctly if it were going into failsafe mode by sending the servos to their pre-programmed position?

If the RX didn't command the failsafe settings on your servos, then there's a very good chance you didn't have a "lockout" but have other problems to track down. Bad cell in your battery pack, broken weld in the battery pack, a wiring problem, a cracked component or cold solder joint somewhere in the bowels of your receiver, a temperature sensitive component in the electronics somewhere, broken switch...

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-24-2007 12:35 PM  10 years agoPost 3
brianbruff

rrApprentice

ireland

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lockout

Had a raptor70 lock out on me once in the same way, my fault, never checked her over a few screws has come loose, mechanical noise was my problem... learned from the mistake.
have to admit the R30 has not as much metal to worry about but could still happen.

binking light on 401 may not be a problem if you know what you were doing and have tail setup correctly and quicked trimmed and start that gyro in normal mode, but i'm not going to get into a discussion on that here, it's been beat to death on different threads.

regds
Brian

I smile, cause I've no idea what's going on.

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01-24-2007 12:49 PM  10 years agoPost 4
Nightstalker

rrElite Veteran

UK (BEDFORDSHIRE)

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might sound silly mate but check to see if the exhaust is tight on the engine,
reason why i say this im running a hyper with TT pipe and i came in to land the other day and just as i about to take off again i saw a glitch and thought it was me so i went higher and then it glitched really bad, so i dropped her down and shut her off,
i got back to the pitts and found my exhaust was lose and rattling, so i tightened it back up and tried again and she was fine,
I was told a lose exhaust can cause a glitch or even a lock out being metal to metal

worth a check

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01-24-2007 02:33 PM  10 years agoPost 5
philthewrench

rrApprentice

Westchester Co. NY

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I did leave the radio and heli outside for a few hours after the crash and looked for a failure when cold but it seemed ok. I thought that i was gonna find a problem there but i can't see anything to blame there. The 401 was blinking and it was started in hh. I do think it was in failsafe, I have them all set to hold(now I think I'll put cutting throttle) and it stayed in hover for 2 or three seconds while i stirred the sticks and flipped th untill it rolled over on it's own. But i think i found the problem. I checked for loose bolts/screws and everything was good but where the frame meets the skids there was a bit of that oil/metal mix. The nut/bolt were tight but when I pulled the skids a piece of the metal base plate I have was cracked off with the edge wedged between the skid and the frame i could see where it was grinding itself away.

So now I hope one of you always nice and helpfull people will agree with me and say "oh yea, that's it"

But I am still unclear about the gyro lite, should it blink like that in a lockout?

I gotta say, I don't like crashing but i have learned to deal with it but that was the first time the sticks did nothing and I REALLY didn't like it!!

Thanks again, I think I'm gonna go beat that baseplate with a hammer now

Phil

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01-24-2007 02:45 PM  10 years agoPost 6
HELILAB

rrApprentice

Sunny Miami Lakes, Florida 33016

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lockout

How old is the switch, I would get a new one just in case. I dont use switch any more Im using deans plug, one less thing to worry about

Mario

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01-24-2007 09:04 PM  10 years agoPost 7
JuanRodriguez

rrProfessor

The Villages, Florida

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The nut/bolt were tight but when I pulled the skids a piece of the metal base plate I have was cracked off with the edge wedged between the skid and the frame i could see where it was grinding itself away.
What in heaven's name are you doing with a metal plate between the skids and the frame ?? (aluminum, I assume) If anything, use the intended carbon plate or make one out of G-10..... much more resilient to vibration....

http://runryder.com/helicopter/t312686p1/

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01-24-2007 10:35 PM  10 years agoPost 8
teamdavey2001

rrApprentice

Sunnyvale, California, USA

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I hate to rain on your parade, but if you had to cycle the power to get the radio back alive it was not a classic hold. The radio should have come back as soon as the noise source went away. Something else is going on.

Jim Davey

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