Revised G Scale LGB Servo Coupling

thingiverse

UPDATE: After a lot of use, I noticed setting the engaged and uncoupled positions on the servos was extremely critical. If the servo is too far "engaged", then it can't easily spring down to couple with another carriage. On the other hand, if the unlock position was too far forward, the hook could get caught behind the front of the pusher. To fix this issue, I removed the front part of the pusher entirely and modified the hook to keep its geometry when engaged roughly the same as before (see new file "hook3"). This modification allows it to disengage very reliably now (see "mk3 pusher"). I originally included a removable lip in the front of the pusher to keep the hook on the carriage engaged, but with the loco's hook engaging the carriage instead, I removed this and will see how it works out. With the changes, the uncoupled position is now much less critical and it decouples very easily. If you have any ideas for improvements, please send them my way! Here is a video of the full design working while decoupling from a carriage: https://www.youtube.com/watch?v=UJGuc5AQuE4 I also made slight modifications to the Loop2 Pusher2 and Base2 parts. They're very similar to the original but work better with larger magnets in both the loop and hook (3mm diameter * 4mm long).