True linear servo conversion kit for standard servos

Finally! A true linear conversion for full-sized servos!
Simply press-fit the supplied gear onto the top of your servo, add a drop of CA glue (being careful not to get any into the servo itself, and use your servos hold-down screw to secure it in place. Add a bit of silicone grease, slip the rack assembly over the gear, and push your linkage rod into the linkage slot. A quick turn of the set screw and the rod is locked in place, but still fully adjustable for future needs.
The advantage of this product is the application of force directly in line with the linkage rod itself, perfectly parallel to the direction you're trying to move the rod, reducing wear and the likelihood of premature failure of your seal.
Note that the printed gear will have a slight swell on the one edge, a result of the printing process. This edge is to be installed closest to your servo.
This adapter was designed for use with servos that have a 6mm diameter toothed hub such as the Futaba S3003.
Package contains:
1x servo gear
1x toothed rack
1x set screw
Thanks for watching!
Bob Martin
the RCSubGuy

[@tiwtechnologyinc.4749]

Just added to my Astute build.

[@mazwan1980]

Nice , tq for share in design and info

[@CraigLYoung]

Thanks for sharing!

[@jorgeneo560]

clever desing

[@4NDR3LU12]

brilliant

[@billdrennan3329]

Love RC Sub Guy, but is he related to Uncle Jessie of 3D resin printing?

[@user-kx4st7hr3i]

gooooooooood

[@iranausley8150]

Hi Bob, what spline on the servo output shaft or does it come with several. Thanks.

[@RCSubGuy]

No spline. A drop of CA and the stock bolt hold it down to any servo with a 6mm diameter servo spline.

[@coast219]

Are these available for micro 9gm servos?

[@RCSubGuy]

Not at this time.

[@haigjansz5643]

How much linear travel do you get from the standard servo please?

[@RCSubGuy]

Approximately 1/2" total (13mm)

[@haigjansz5643]

@@RCSubGuy Thank-you. A variation on this for more travel would be a larger diameter wheel with more teeth and a larger box top. Something to consider.

[@RCSubGuy]

@@haigjansz5643 Of course, but then you have a much larger unit. Also, as the diameter of the gear increases, the distance offset from the center of the linkage rod increases, resulting in offset forces. Travel can be adjusted not only at the servo, but at the control surface horn.