Hunchback Bowden Extruder

See how I am going to include the HunchBack Bowden Extruder into the WIP 3D printer I am designing at Sketchfab: https://skfb.ly/LPP7

>I need an extruder that would comply with the following requirements:
>* has a wider foot and most probably will fasten to its support under the motor (due to special space constrains);
>* uses all four bolts to the motor;
>* will grip the filament very close to the motor (to take off the lateral stress from the bearing);
>* will be easy to open the Idler arm without unscrewing;
>* will be optimized for a top*down positioning thus filament will come from below and the bowden will arch at 45 degrees, maybe reducing some length.

>This is still in designing phase but placing it online will allow me to receive comments and suggestions.

>Some more details about this extruder:
>* printing this thing vertically is possible but I wary about the rotational forces exerted by the motor when spinning, forces that tend to de*laminate the layers (I can