maybe someone will find this info useful. if any of this info is off, please post up and i will edit it, or if your a mod or admin, just edit this post lol.

Servo output shafts

23 tooth spline - Sanwa / Airtronics / KO / JR
24 tooth spline - Hitec
25 tooth spline - Futaba / TT / ACE / HPI



Spline (teeth (gear Mesh) on Servo's output shaft)
==================
23 teeth on the spline
-Sanwa
-Airtronics
-KO Propo
-JR Propo
-Graupner
-Multiplex
-Volz
-Cox
==================
24 teeth on the spline
-Hitec
-Hobbico
-Tower (System 2000)
==================
25 teeth on the spline
-Futaba
-Keil
-FMA
-Cirrus
-Vortex
-Duratrax
-HPI
-Tamiya
-Tower (System 3000)
-Traxxas
-Orion