Servo Operated Knuckle Coupling

2021 Update.
I have revised the dimensions and details slightly and now recommend that the main body should be made as a single part, - 0.2mm layers, WITH supports (touching buildplate only).

I have put all the parts as a single print file so they do not need rotating etc.

The disconnect lever now comes in LH and RH versions for the two different servos that are available.

There is now an "anti droop" part that fits above the knuckle body and holds down the "back" of the knuckle's circular connector. It will be held in place by the LGB coupling once it is fitted to the loco.

Operation is still the same, but hopefully

Old Videos are stlll relevant: https://www.youtube.com/watch?v=kimp_JnspIU and : https://youtu.be/kimp_JnspIU

(Feb 2020) I have uploaded the full set of (non servo) knuckle couplings to this thing for completeness.

There is also a "fixed" version of the knuckle that is for carriages etc and is a simple one piece part with integral plastic springing