Linear output on radial servo

[Ed Kirk]

Strange idea, why rotate linkage when the servo can be rotated. The idea came to me the other night to hinge the servo to rotate around the linkage. I don't know where the idea came from, I am a fan of antique steam and diesel engines and maybe seen the concept there.

I may have had the idea before but didn't have the means to make it work.

[redboat219]

Video of them working? I feel that the whole servo will just swing if the controls shafts encounter some resistance.

[JHapprich]

Right. Actio=re-actio. You need a soldid servo mount and an excenter lever between horn and rod

[Ed Kirk]

I'm not set up to do video, I tried.

Does work, no lost motion, very solid servo mount, probably won't work with long rod like when using a bellows. Just keep pivot point in line with rod and the hinge as long as possible. Any way it's free to try.

[RCSubGuy]

I'm not understanding the swiveling servo idea. They'll just swivel back and forth, leaving the shaft in place, will they not.

I think this is more what you should investigate: https://www.rc-submarine.com/product...a-s3004-servos

Really simple, cheap, and easy to implement.

[redboat219]

I'm not understanding the swiveling servo idea. They'll just swivel back and forth, leaving the shaft in place, will they not.

I think this is more what you should investigate: https://www.rc-submarine.com/product...a-s3004-servos

Really simple, cheap, and easy to implement.

And the sliding rack and pinion.

[Das Boot]

Linear is great. Wish the mini servo’s had them when I was building.

[redboat219]

Can't remember who made this articulated connecting rod