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[Tug-Kenny RIP]

Thanks for the info Martin.  That explains it beautifully.

I knew there was more to this than meets the eye.  I have been through all my stock of fitted and unfitted servos and they all turn right, on pushing the stick right.  I am now convinced it's the T/X controls that govern the situation. My T/X does have a reversing switch which works but I do not use it as it's best to keep all models set to standard.  I must admit that I didn't know it was down to the T/X, which is why I wrote in the first place.

I also have a few servos with the 'mechanical stop button' removed and a balance set of resistors fitted, so that they can be used for continuous rotation in my crane.  These also rotate the correct way around, so all is well.

Thank you all for your input.   


ken
 

[Circlip]

I am now convinced it's the T/X controls that govern the situation.

   No Kenny, it's down to the servo manufacturer as to which way the feedback  pot and the motor are wired. I mentioned the Sanwa mini two and a servo of each rotation was supplied.
 
  The TX pot may be wired so that RH movement of the stick increases the signal length but the reversing switch "Reverses" that.
 
  It should also be noted that although the "convention" for M/S is 1.25 / 1.5 / 1.75 early Futaba was 1.3 / 1.5 / 1.7 so they would only work properly with Futaba gear.
 
  Regards  Ian.

[Tug-Kenny RIP]

Thank you for that Ian.

If I wanted to reverse the action of an individual servo then would I just reverse these two sets of wires ?   ( motor and supply to the twin resistors?)

Cheers

Ken

[Circlip]

The connections I'm referring to are inside the servo casing.
 
  Regards   Ian.
 
 
     http://www.youtube.com/watch?v=EK_FdRTenl0

[Martin (Admin)]

Some servos are almost impossible to get at the wires without destroying it but you may be able to fit a switch to the transmitter.

http://www.rcgroups.com/forums/showthread.php?t=387127
http://www.rcgroups.com/forums/showthread.php?t=1505333


http://www.ebay.co.uk/itm/Turnigy-RC-Servo-Signal-Reverser-Rotation-for-JR-Futaba-Aeroplane-V-Tail-Reverse-/160862474288?pt=AU_Toys_Hobbies_Radio_Controlled_Vehicles&hash=item2574269030

[Circlip]

Some servos are almost impossible to get at the wires without destroying it

 
 
If an Oriental can make it, a Brit can mod it      
 
  But as Kenny stated, although he has reversing switches on the TX, he wants to keep the controls "Standard".
 
  Regards  Ian

[malcolmfrary]

Thank you for that Ian.

If I wanted to reverse the action of an individual servo then would I just reverse these two sets of wires ?   ( motor and supply to the twin resistors?)

Cheers

Ken

Basically, yes.  They tend to be fiddly to get at, but it can be done.  If the pot and the motor are wired to the board, life is fairly simple, but some have one or both soldered direct to the board.  In the case of the pot, modding would involve cutting the end legs and cross-wiring.  Direct soldered motors typically have three legs - two for power, one each side, and one halfway between for the can.  Reversing involves unhitching all three, flattening the can one out of the way and wiring it to its original hole, refixing the motor 180˚ from its original position.  The can connection hooks to the onboard suppression capacitors.

[JayDee]

Hello,
Servo reversing can be done with the linkages.
Back in the "Good old Days" we had no reversing, it was all done with the linkages.
Come On Chaps, get your thinking heads on.
Post some details of a setup that needs "reversing" and lets see the problem.
 
John. 

[Umi_Ryuzuki]

Basically, yes.  They tend to be fiddly to get at, but it can be done.  If the pot and the motor are wired to the board, life is fairly simple, but some have one or both soldered direct to the board.  In the case of the pot, modding would involve cutting the end legs and cross-wiring.  Direct soldered motors typically have three legs - two for power, one each side, and one halfway between for the can.  Reversing involves unhitching all three, flattening the can one out of the way and wiring it to its original hole, refixing the motor 180˚ from its original position.  The can connection hooks to the onboard suppression capacitors.

I think what he really means,... Is No you can not simply reverse the red and black wires.
You have to leave those wires alone. But yes, reverse the polarity at the motor, and the reverse
the two outside wires on the potentiometer. 

[Martin (Admin)]

Back in the "Good old Days" we had no reversing, it was all done with the linkages.

"That's crazy talk man!!!!" There was never a time with electronics and the internet.... ask my kids!"     

[JayDee]

• Hello,
  Servo reversing can be done with the linkages.
  Back in the "Good old Days" we had no reversing, it was all done with the linkages.
  Come On Chaps, get your thinking heads on.
  Post some details of a setup that needs "reversing" and lets see the problem.
   
  John.   

[JayDee]

Hello,
Well, what has happened to all the rewiring, servo chopping and altering ect,ect ???.
John.