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HomeAircraftHelicopterAerial Photography and Video › time for a new t/r servo
02-07-2006 02:38 AM  12 years agoPost 1
bell-230

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sonoma, ca (currently milano italy)

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my tail has been acting up as of lately and i've been thinking it's the servo. it seems as though the tail is really starting to kick and its really worrying me, and whenever i move the rudder, and you feel the pushrod, you can feel it really moving in steps(you can almost see it) so i'm thinking it's more so the servo then the amp.

any ideas on a good t/r servo? i saw a while back some prefering something other than a 9254.

one more thing, the servo has always had the feeling of moving in steps since i got my joker, and well the kicking began when i was finishing up flying the heli and taking it to the car and it began pouring down and i noticed the amp did in fact get wet(as did the servo and everything else.

this left me very worried, and so my first flight after the rain incident was in tahoe and the tail was really kicking, so something is definently broken.

any suggestions? is it the servo or would you think it to be the amp?(this is also my first time having anything other than a 401)

thanks for your time,

ian brooke
k2shots.com

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02-07-2006 02:55 AM  12 years agoPost 2
DANNO

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St. Petersburg, Florida

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funny you should ask about water getting into stuff....

2 days ago we the most rain in a day for many years...12" in some spots!!

anyway, i had my maxi on my bed so the usb cable could reach the ap2000i and didnt realize that the hatch above the bed was leaking and dripping right on the 401!

i dried it out with a hair drier. today when i flew, the tail kept drifting to one side......i wonder if it was just windy or if it was the water on the 401

www.skypiximaging.com

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02-07-2006 02:57 AM  12 years agoPost 3
pilatus turbo

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Brandon, MS

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Amp?
Ian,
What do you mean by Amp?

Hector

I have a dilema but I can not decide

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02-07-2006 02:58 AM  12 years agoPost 4
bell-230

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sonoma, ca (currently milano italy)

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hmm hopefuly angelos or one of the electronics people will chime in to helps us out

hector, the amp is that box with the lcd display that the actual gyro and servo plug into.

glad to see you're back hector

ian brooke
k2shots.com

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02-07-2006 03:04 AM  12 years agoPost 5
pilatus turbo

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Brandon, MS

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Ian,
So what gyro are you using the 502? with the 9254?

Hector

I have a dilema but I can not decide

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02-07-2006 03:05 AM  12 years agoPost 6
bell-230

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sonoma, ca (currently milano italy)

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exactly

ian brooke
k2shots.com

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02-07-2006 03:07 AM  12 years agoPost 7
pilatus turbo

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Brandon, MS

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Ian,

I am not an expert but I think you may need to move up to a better servo. Not sure the number but all the people I see using the 502 have a futaba servo with the cooling fins on it...

Hector

I have a dilema but I can not decide

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02-07-2006 03:13 AM  12 years agoPost 8
bell-230

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sonoma, ca (currently milano italy)

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hector, you're most likely talking about the 9251 or new 9256

9251


9256

ian brooke
k2shots.com

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02-07-2006 03:15 AM  12 years agoPost 9
pilatus turbo

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Brandon, MS

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Ian,
Yeah... one of those,, but you may want to double check before expending the money...

Also, did you try replacing the foam under the gyro? just in case...

Hector

I have a dilema but I can not decide

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02-07-2006 03:17 AM  12 years agoPost 10
bell-230

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sonoma, ca (currently milano italy)

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hmm never thought of the foam, i should definently check that. although i still want to replace the servo just because of the strange notch/step movement/feel of the servo

ian brooke
k2shots.com

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02-07-2006 06:37 AM  12 years agoPost 11
shootfromabove

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Eagle River, Alaska

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I have had an experience with my heli getting wet, really wet.
I had my Xcell gasser in an inverted hover over a pond at about 10' when the motor quit! I got it right side up and within three feet of the edge of the water, but alas it went for a swim
I fished it out, tore all the electronics apart and rinsed them with distilled water and let them air dry for a couple days. Lubed all the bearings etc, and I am still flying this setup to this day!

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02-07-2006 01:37 PM  12 years agoPost 12
mojojo

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Shrewsbury Massachusetts

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I don't think you can use the 9251 or 9256 servo with the 502 unless you do the 502-601 conversion.

Joe Miller

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02-07-2006 06:19 PM  12 years agoPost 13
aambrose

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Pana, IL

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I have had an experience with my heli getting wet, really wet.
I had my Xcell gasser in an inverted hover over a pond at about 10' when the motor quit!
Too funny -- not that you got your equipment wet -- the description made me laugh.

Ian,
I had the same tail twitching with a 401/9254 and it turned out to be some bad gyro tape. Replaced the tape and no twitching. Does your pushrod move "notchy" when you move your rudder stick with the heli on the bench?


Tony

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02-07-2006 06:47 PM  12 years agoPost 14
bell-230

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sonoma, ca (currently milano italy)

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yeah the tail moves very notchy(i said it was in steps) and that was one thing that concerned me.

tony, do you know what the cause is of the notchyness?

but after seeing what many were saying about the reciever and how i should open it up to dry off more thoroughly, and i was thinking the same should be done to the amp?

ian brooke
k2shots.com

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02-07-2006 07:25 PM  12 years agoPost 15
aambrose

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Pana, IL

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I was just curious to know if the servo moves in steps on the bench. If so, does it do it while moving the Tx stick or from input from the gyro or either? If it's smooth with stick movement but notchy from gyro input, then I would suspect it has something to do with the gyro or the connection. It probably wouldnt hurt to open things up and let them dry out. Water and electronics usually don't mix well.

When the tail was twitching on my GSR, I inspected the gyro and noticed the tape was deteriorated enough to allow the gyro to tilt several millimeters one way. New tape fixed the twitching.


Tony

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02-08-2006 02:26 AM  12 years agoPost 16
bell-230

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sonoma, ca (currently milano italy)

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just an update,

tony, i tried plugging the servo directly to the rx, and the notchyness went away! i checked the gyro, and no slop....

so i think this narrows it down to amp damage or i didnt program it properly... actually i never did program it, i just took it as it was from tony.

ian brooke
k2shots.com

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02-08-2006 03:24 AM  12 years agoPost 17
aambrose

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Pana, IL

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Looks like you've got it narrowed down.


Tony

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