600 Rudder Servo

[putang]

I had some time to day to work on my helicopter. but ran into a problem the rudder would only turn into the boom side. but from a neutral point it will not turn out away from the boom . thought maybe it was binding . so I disconnected the rod . the servo arm or star shaped wheel would only rotate about 15/30 degrees. went into the transmitter and open the instruction manual , tail menu tail type 760 tail frequency 333 tail sub trim 0 all checked out . tail limit A 235 could only get 200 + - tail limit B never did find that or dir-rud sensor . or dir-pir sensor , what am I missing or doing wrong . really appreciate any help.

 

[putang]

Oh this is a thunder tiger raptor 550 E

 

[murankar]

Not sure, if your not getting full travel look at dual rates and see if that's affecting the travel. I don't think expo would help here.


Make sure the gyro sees full stick input. Not sure about your setup on how to check.

 

[Rob Lancaster]

First I'd like to know if its the servo or the gyro that's causing the problem. If the TX is all centered out, with the servo travel set at 100% in both directions, then bypass the gyro and plug the servo into a servo tester or if you don't have a tester, just plug the servo directly into the RX and test the travel there.
If it travels good there then I think the gyro's end points need to be set.
Good luck and let us know what happens...

 

[putang]

good morning rob . I know that the gyro is part of the receiver . it is the falcon 12 hott by graupner . yes the tx is all centered out 100 +,- .I am not sure of the end points . the servo horn seems to only turd approx. 15 deg which is enough to move the tail rotor its full travel . but now it seems to bottom out and the servo buzzes . if you move the stick slightly it stops I will have to look at the gyro end points when I get home from work . thank you for the reply .

 

[Rob Lancaster]

Oh! The gyro is part of the RX..
Do you have a servo tester?

 

[putang]

yes I bought the vgeby motor servo tester multi function and the HJ digital motor tester . from amazon. good time to find out how they work .

 

[putang]

I hope that it is not the servo . at one time I could not even get it to work seems that I had to change the frequency to 760 us . so I thought it was bad and searched for 1 it seems they only sell them in Europe and they will not ship to my address in the USA . graupner has a servo find section on there web page .and that's where I left it . graupner USA where I bought this stuff from does not like to return there telephone calls there's 3 hrs. difference between the east coast and west coast I live on the east side . there must be 4 hrs. between the east coast and you in Hawaii.

 

[Rob Lancaster]

If the servo you are using is a 1520uSec at 333Hz, setting it to 760uSec 560Hz won't solve the problem. Make sure you match the servo to the RX's out-put...

Heck I think we're 5 hours back on the clock now here in Hawaii .. We don't do that Day-light Savings thing here.

 

[putang]

I will have to Waite till I get home from work 5:00 pm est. to find that out . not many people can help me with this graupner tx/rx . popular in Europe like spectrum is here in the USA.

 

[Rob Lancaster]

Nite-tee night.. See you on the flip side....

 

[putang]

the servo for my thunder tiger raptor tail rotor is ds0606n

• Weight: 60g

• Torque (Kg-cm): 4.8V: 4.5 / 6.0V: 5.5

• Transit Time (sec/60°): 4.8V: 0.073 ; 6.0V: 0.058

• Voltage Range: 4.8V / 6.0V

• PWM Pulse: 760μs
  • Torque: 8.5kg/cm @ 4.8v. 10kg/cm @ 6v
  • Speed: 0.19 sec/60 Degrees @ 4.8v. 0.15 sec/60 Degrees @ 6v
  • Weight: 1.75oz (49.7 g) the manual says that it is a ds1510 mg servo ace-rc for both servos

 

[putang]

Either 1 of these servos state that they are transit time or speed [sec/60 degrees . but the one on the helicopter the ds0606 n . Moves about 15 degrees with full movement left to right . I am going to test the servo to see if it is indeed a 60 degrees .

 

[RandyDSok]

The speed that a servo travels ( sec/60 degrees ) isn't the same as the amount of travel the servo can travel... one is how fast, the other is how far.

 

[putang]

ok so the servo that in my helicopter the ds0606n moves about 15 deg total. it must be based on speed since it has full travel . then now I have to find out why it bottoms out and buzzes like it has a load on it.