47-Sprocket for soft Lego track

[oracid]

Here is a new very simplified track for which I have draw a new sprocket 47mm diameter.
The elasticity of the track can be appreciated as a quality, but also as a defect. For this last reason, I propose a solution approach.
This caterpillar is not perfect, but it has a remarkable grip and it allows a concave curve, which is not the case of the Lego track.
You can download the stl file here : https://www.thingiverse.com/oracid/designs