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At least the study material is available now. Thanks for all the links.

youre welcome.

Haha - "3F Standard Spline (25 tooth) - MOST standard size Futaba servos have the 3F spline"
- exactly what I'm talking about! - like, "Some standard Futaba servos DON'T have the same splines as the rest of them"
Good to see linear servos are starting to come down in size, hope they hurry up & produce toy car sized ones (For scaler steering & gearchanges, truck tipper rams etc)

For his contributions in this topic and the CVA evolution waterbok has been rewarded an information award! Congrats!
Besides the help in these topics this valued member often generally has good info to offer elsewhere.

Thank you for helping Tamiyabase and it's members.

Well deserved!
Talking of servo horns, just finished putting a vintage Futaba Medallion radio in my quattro, servos have square output shafts, which were both at funny angles, & the steering one worked in reverse (No reversing switches either...). Had to get the back of the tranny & do a bit of pot tweaking to get the squares in the right places & take the steering gimble out & turn it upside down to get around it! Ah the good old days...