Qrevo Curv side brush retrofit adapter

I wanted to use the much improved ‘Arc’-side brush from the new Qrevo Curv on my trusty old S7 MaxV. Since Roborock changed the mounting geometry, it is sadly not plug-and-play.

So I made this little adapter to mount it on the older-polygon shaped side brush axle.

You'll need a M3x14 screw (flathead would be preferable)

and a Qrevo Curv side brush.