polkfam

I NEED TO KNOW WHAT IS THE POSITION FOR STRONGEST TORQUE FOR THE SERVO TO CONTROLL HORN , WITCH HOLES DO YOU USE. pLEASE HELP

khodges

My Feedback: (1)

For the most torque, the holes closest to the center of the SERVO arm, connected to the outermost holes in the CONTROL HORN. For most throw, outermost holes in the CONTROL HORN, innermost on the SERVO.

Innermost holes on the servo arm will also allow the most servo travel for a given control deflection, and allows finer control.

Insanemoondoggie

You mean that in reverse , dont you ?

superflea

thats kinda what i was thinking too. the reverse that is.

And I would be surprised to learn that the hole you use has anything to do with the torque of the servo. no matter where you put the pushrod it still is being driven be the tiny little motor we call a servo. the hole location will dictate the amount of travel, but will have nothing to do with the amount of torque. Or am I about to learn something here. It happens.

Insanemoondoggie

The longer the throw, at the servo , the less torque . The longer throw places more load on the servo arm .

superflea

ah I see its like putting horse power to the ground in a car gotcha makes sense now that i think about it

Tired Old Man

My Feedback: (1)

A servo's torque is rated by what it can perform with the "lift point" located 1" out from the center of the output shaft. Strength increases as that attach point moves towards the center of the output shaft. The leverage that the servo can exert upon a surface increases as the attach point at the surface moves away from the surface. If the attach point moves toward the surface the servo will have less leverage and usable torque as soon as that attach point is less that the distance at the servo.

So shorter at the servo, longer at the surface.

airbusdrvr

A servo's torque does not change. There is no hole that gives more or less torque. You can get more force by moving closer to the servo's pivot point or get more control throw by moving farther from the pivot point.

http://www.physics.uoguelph.ca/tutor....intro108.html

Rodney

What airbusdrvr said; correct answer in a nutshell.

rwright142

RCKen will probably reply with a graphic that will help.

da Rock

Keep in mind that the problem isn't just at one end of the pushrod or the other.

And remember that the servo is an electric motor and the way they operate is significant. They produce whatever they're designed to produce IF they have the battery power to do it. If the load goes up, they simply suck more out of the battery if it's there, and do what you ask.

If servo power or lack of it is causing you to ask this question, you've only got a couple of solutions. Make sure the pushrod connection is farther out on the surface horn, and closer in on the servo arm, and if that doesn't work, swap in a stronger servo. Or put a boost tab on the surface that needs more servo. It'll solve that problem without doubt.

Tall Paul

What moves what how far.