Flowback - a new bowden extruder concept

Im missing a Bowden extruder which looks good! So I have been rethinking it: It might work or it might not! - Its a work in progress.

I have created a new version where the extruder are made of 3 parts:
1. The inner chassis which You se on the Photo
2. Body Front - planned - much like version 1
3. Body Back - planned - much like version 1

The philosophy is that You can use the Chassis - which I make in 2 versions - one with fixed hotend holder and one with replaceable hotend holder