HS-7955 Has the Jitters
06-18-2009, 06:47 AM
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HS-7955 Has the Jitters
Ihave a NIB7955 that Iinstalled in a new 35% plane on the rudder. Isoldered in a 3-4' extension. On powerup the servo "jitters". Ireset the servo & tried again, same problem. Itried another new 7955 with no extension & the same thing. Tried a 56xx series servo & all is quiet, no "jitters".
Iam using a A123 battery thru a Smart-Fly power Expander.
Whats going on with these servos? Anybody have have a clue....?
Ithought these servos were suppose to be the cream of the crop. Gimmie back my 5955's....
Stan
Iam using a A123 battery thru a Smart-Fly power Expander.
Whats going on with these servos? Anybody have have a clue....?
Ithought these servos were suppose to be the cream of the crop. Gimmie back my 5955's....
Stan
06-19-2009, 04:14 AM
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RE: HS-7955 Has the Jitters
ORIGINAL: Whymee Ihave a NIB7955 that Iinstalled in a new 35% plane on the rudder. Isoldered in a 3-4' extension. On powerup the servo "jitters". Ireset the servo & tried again, same problem. Itried another new 7955 with no extension & the same thing. Tried a 56xx series servo & all is quiet, no "jitters". Iam using a A123 battery thru a Smart-Fly power Expander. Whats going on with these servos? Anybody have have a clue....?
Ithought these servos were suppose to be the cream of the crop. Gimmie back my 5955's.... Stan
Ithought these servos were suppose to be the cream of the crop. Gimmie back my 5955's.... Stan
"Servo - alterations, calculators, databases, repairs, convert to an ESC or winch & FAQ" at Alan's Hobby, Model & RC FAQ Web Links
Twisted wire leads were added to many of the Hitec servos in 2002 in an effort to prevent RF noise from long servo leads feeding back into the servo causing unnecessary servo "jitter". High power digital and analog servos need plenty of current to deliver massive power. Recognizing this, Hitec increased the size of the wires from 24 to 22 gauge to provide the power these servos need to perform at the highest level. Hitec items which may assist:
#54651 is a light weight 160 mm servo wire with plug for micro servos.
#54652 is a light weight 160 mm servo wire with Female "S" Connector.
above 2 items can be soldered together to make a lightweight extension lead of up to 315 mm, long lengths are not available.
#57417 is a standard weigth 50'(15.2m) length of 24 gauge servo lead.
#54804 is a heavy duty 50'(15.2m) length of 20 gauge servo lead.
Regards
Alan T.
06-19-2009, 06:14 AM
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RE: HS-7955 Has the Jitters
Thanks for the reply Alan T.
While Iagree 200% with what you are saying, Ihave taken the possible problem with the extension out of the equasion when Itried the second servo with a stock length lead.
Please reread my origional post.
Nice try though!!!
Stan
While Iagree 200% with what you are saying, Ihave taken the possible problem with the extension out of the equasion when Itried the second servo with a stock length lead.
Please reread my origional post.
Nice try though!!!
Stan
06-21-2009, 06:59 AM
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RE: HS-7955 Has the Jitters
Not sure if this will get through, or answer your questions, but here goes -> http://www.flyinggiants.com/forums/f...s-buzzing.html
Email me if the link doesn't work
Bob
Email me if the link doesn't work
Bob
06-21-2009, 04:11 PM
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RE: HS-7955 Has the Jitters
ORIGINAL: bob_nj
Not sure if this will get through, or answer your questions, but here goes -> http://www.flyinggiants.com/forums/f...s-buzzing.html
Email me if the link doesn't work
Bob
Not sure if this will get through, or answer your questions, but here goes -> http://www.flyinggiants.com/forums/f...s-buzzing.html
Email me if the link doesn't work
Bob
I am already all over that post. As a matter of fact, I am post #50...
If Ihad to make a guess (from all Ihave read) I have blown amps in the servos in question. Idid reset the deadband to 3. That helped tremendously. A band aid, not a cure..
As far as the helping out a fellow flier. Ipersonally appreciate the help. Even iffin ya did not digest all Iwrote in my origional post.
Kids!! Hurmph...
Stan
