Developed on the last feature I did, this very specific bracket allows you to mount a Heden M21VE-L on an Arri LMB25 three stage clip on for use with a rota pola. We used this to allow the DP the ability to roll the pola with a single channel handset and it worked great.
I did a small run of them. Comes with mounting screws and a 3D printed gear extended which allows you to stop the motor in calibration and not get your fingers all pinched up.
Please note: this is tested and known to work with that exact combo. I have confirmed it will not work on the newest Arri 4x5 clip on. I can work on a design for that if there is a want.
Designed, machined, and available for pickup in Atlanta, GA