comments:
I have two mounts. Rear seat mount from TWTOPSE on Ali Express. Under the seat on my Brompton there is a mounting point. This fits it perfectly and discretely. It's not a rail mounting kit. One screw. You could probably find a 3D printable part for this too. Front handlebar mount from Trigo on Ali Express. Uses the handlebar clamp screw. Sits perfect. Can be adjusted to not affect fold even if camera is attached (there is one orientation that puts the camera a few mm forward. I was find with both orientations for my camera. On both Gopro mounts, I use a fixed screw to attach a DJI quick mount. The Telesin DJI mount has a USB port that is useful for my DJI Osmo Nano so I can provide it continuous power and record for much longer periods of time until the internal storage is full (I recall I'll get 3hours of storage... longer if I reduce the resolution). I put the Nano on front or rear so I have the same DJI quick mount on both. My DJI Osmo Action uses the same quick mount (just not the charging capabilities (this would be a nice feature to add to a future Action. Same DJI quick mounts on the front and rear of my other bikes too.