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[Tug-Kenny RIP]

        NEW YEAR CRACKER PUZZLE


Is it true to say that a servo will rotate the arm Right when the Transmitter lever is pushed to the right.  ?????

What way will it turn if the the T/X lever is pushed upwards,  (when connected to another channel of course).

Is it possible to reverse this action by altering the servo in some way. ??


Cheers

Ken

[Big Ada]

Er, Why?.

[Bob K]

Er, Why?.

Sometimes it is necessary to have two servos on a single channel, one turning in the opposite direction. eg: aircraft ailerons or bow & stern rudders.  Some analogue servos can be modified internally, or simply buy a JP Y lead with servo reverser.

[Tug-Kenny RIP]

My point was to see which way they ALL turn when new, or does it depend on pot luck ?

The question arises when fitting rudder control, as Bob says.  Until you connect it up and find it goes the wrong way around.  At the moment I'm working on the theory that last boat turned clockwise on rudder right, but will it do it with the next one ?     


Ken

[Timo2]

Hi


   1 = Buy a Servo Swinger .


   2 = Turn Servo 180 '


   3 = Buy a servo reverser eg. =       
                     http://www.hobbyking.com/hobbyking/store/__17033__Turnigy_Servo_Signal_Reverser.html

   Hope this helps

  Timo2

[barriew]

Surely it depends on how you install (align) the servo in the boat    If you always install (align) them the same way, then yes they will always turn the same way, assuming no reverser is enabled.


Barrie

[Bob K]

   2 = Turn Servo 180 '
 Timo2

   2  = If it turns clockwise on right/up it will still turn CW if turned 180' (with the spindle still at the top).
         Another option is to cross the linkage across the centre line.,  ie Servo port side to Rudder s/bd side
 
At this point we should own up to turning on each of our boats to see what happened 
Mine all go CW

[Circlip]

From memory, Sanwa mini-servos were orientation noted by the fact that one digit in the type number denoted whether clock or anti clock rotation was the norm. eg. 350 was clock and 351 was anti. or vicky verky, so that in the mini-two set, you got one of each.
 
  "Servo Shop's" Hitec HSC-5996 TG and 5997  may be opposite rotation.
 
  Regards  Ian.

[Umi_Ryuzuki]

If the servo turns clockwise when the joystick is moved to the right, then if you
want the control rod to PUSH, then mount the control rod on the three o'clock side.
If you want the control rod to PULL when the joystick is moved to the right, then
mount the control rod on the nine o'clock side.
(assuming your rudder is at the six o'clock position...)
 

[Tug-Kenny RIP]

From memory, Sanwa mini-servos were orientation noted by the fact that one digit in the type number denoted whether clock or anti clock rotation was the norm. eg. 350 was clock and 351 was anti. or vicky verky, so that in the mini-two set, you got one of each.
 
  "Servo Shop's" Hitec HSC-5996 TG and 5997  may be opposite rotation.
 
  Regards  Ian.

Thanks for the details Ian.   I've had a look at the comprehensive range which was very impressive.

But ....  no mention of which way they Turn.     

Regards

Ken

[tony23]

am I reading this right that all you guys don't know how to make your servo move the other direction if it need too

[derekwarner]

Just send them down to OZ tony23.. we guarantee to make anything go backwards/upside down........   ...mind you by the time we send the back....their polartiy will have probably reversed itself again..... .......Derek

[tony23]

Hi Dereck,
         Even water down the plug hole 

[RAAArtyGunner]

am I reading this right that all you guys don't know how to make your servo move the other direction if it need too

 
 
C'mon Derek and Tony, and the answer is.........................
the suspense is killing me

[Tug-Kenny RIP]

The original question is still not answered.

The only point to this thread was to determine if all servos are supposed to turn to the right on right stick movement, or is it pot luck when you select one. 


Ken

[tony23]

The servos turn in the direction that the transmitter is programmed to so if the servo when fitted is turning the wrong direction you want you simply go into the programming mode in the transmitter and reverse the direction!
this is from my futaba manuel
To reverse a servo:
1) Turn the transmitter on.
2) Press and hold the MODE button to access the programming mode.
3) Press either the MODE key OR the END key to scroll through the function menus.
Continue pressing the MODE or END key until the reverse (REVR) menu appears
on screen.
4) Press the SELECT key to select the channel you wish to reverse.
5) Push the DATA INPUT lever downward for 0.5 seconds to reverse (REV) the servo. Press the DATA
INPUT lever upward for 0.5 seconds to make the servo operate in a normal (NOR) direction.
6) Repeat the steps above to bring forth and modify any other channels for which the travel direction is to be
altered.
7) Press and hold the END button to exit the servo reverse menu.
 

[Netleyned]

If your tx is not computerised you have a servo reverse switch for each channel normally.

Ned

[Timo2]

If your tx is not computerised you have a servo reverse switch for each channel normally.

Ned

OR    Turn it  a 180' to reverse it 


 Timo2

[knoby]

Ken, just out of curiosity I tried a few servos last night to see.
2 Futaba S148 both turned clockwise when stick pushed to right.
Hi Tec  808mg turned anti clockwise when stick pushed to right.
Power HD 9001 mg turned clockwise when stick pushed to right.
So there doesn't seem to be a standard set for servo direction, although same types do seem to turn the same way. Given that most modern servo feedback pots are soldered directly on to the pcb, I think its fair to assume that all similar servos models would turn the same way, although different models from the same manufacturer may not.
Of course, you have to take into account, most are made in China, & given their reputation for quality control, I wouldn't bet my house on any of the facts above.

Cheers Glenn

[Bob K]

OR    Turn it  a 180' to reverse it   
 Timo2

As I replied before, with the actuating spindle at the top turning the servo 180' it will still turn the in the same direction.  ie:  Clockwise.  Try it

[Martin (Admin)]

It seems to depend on your particular TX and it's setup Ken, but the "default"  seems to be that
pushing the 'stick' up or to the right should increase in the output signal's 'pulse width'  which
should turn the servo clockwise.

http://www.pololu.com/blog/17/servo-control-interface-in-detail
http://www.scriptasylum.com/rc_speed/radio.html

[Norseman]

Never ceases to amaze me that simple questions never have simple answers. More food for thought and I'll continue to follow.
Dave

[Circlip]

Still needs the manufacturers individual spec sheets. It used to be important before servo reversing switches and computerised TX's. where you had to plan the layout.
 
  Another one to ponder, how many rely on just pushing the "Trim" lever instead of determining trim when operating, coming back to Firma Terrer disconnecting the linkage, screwing the adjuster and re-setting the trim lever to central?
 
  Regards   Ian.

[tony23]

I have been modelling for years and a first should be to get your push rod at  90degrees to the servo horn and control linkage through manual adjustment if need be that way the travel will be the same in each direction.

[Martin (Admin)]

http://www.seattlerobotics.org/guide/servos.html