Digital Servo Singing

[Troy Newman]

digital servos are very good at finding center...and holding it 
there....This takes some power to do it...The hum that you hear with 
digitals is common....

I would suspect its OK...I don't know much about the Hitecs...but try a 
little subtrim or trim and you should be able to get the servo to 
stop.....Usually the weight of the surface is enough to get a little whine 
out a digital servo. But with all linkage disconnected...I would think you 
should be able to get it stop.

I would not be overly concerned...maybe the gear train is a little too tight 
or another option is perhaps when you have bolted down in the servo mounts 
its not straight and the case is slightly tweaked....I know this sounds 
funny but I have seen it happen. Loosen the servo mounting screw a little 
and see if it stops...then slowly tighten in an opposing pattern...till the 
servo is snug. DO this while the radio gear is turned on and you can find 
out if it stops the buzzzzzzz

Another option...perhaps you Pot is worn an is send a changing signal....Say 
step 1024 and 1023 and the and the servo is fighting itself to get in 
between...to check for this try another channel on the RX...usually a 
throttle...as the throttle TX pot doesn't get worn at center....

But I think you may be OK...these are just precautions...and I bet you'll 
find it....If it is one of these two little things...not too much to worry 
about.

TX pots can be serviced...and the servo mounting twist can be fixed easy....


>From: "Keith Hoard" <khoard at midsouth.rr.com>
>Reply-To: discussion at nsrca.org
>To: "NSRCA Mailing List" <discussion at nsrca.org>
>Subject: Digital Servo Singing
>Date: Sun, 16 Nov 2003 21:39:39 -0600
>
>Guys,
>
>     I've just installed my first digital servos. . . Hitec's.  One of them 
>"sings" continuously even when it is not under any load.  Is this normal??  
>I'm using a 4-cell 1200Mah Nicd pack (if that makes a difference).  
>Thanks!!
>
>
>Keith L. Hoard
>Cordova, TN
>khoard at midsouth.rr.com
>

_________________________________________________________________
>From Beethoven to the Rolling Stones, your favorite music is always playing 
on MSN Radio Plus. No ads, no talk. Trial month FREE!  
http://join.msn.com/?page=offers/premiumradio

=====================================
# To be removed from this list, send a message to 
# discussion-request at nsrca.org
# and put leave discussion on the first line of the body.
#