Hi, Bluerobotics! Hope you are fine!
The intent of this topic is not to ask for support, but rather express feedback on real-world usage of Watertight Enclosure Locking Series with some comparison to the “non-locking series” with the hope that in the future some issues will be resolved.
The locking feature sounds great, but the purpose is still not clear. In the water, there is still a very small probability that the tube will be opened, because of significant pressure applied to flanges.
Flanges are not perfectly locked from rotation, there is a noticeable play and you can rotate them easily (2inch models at least), so you can’t rely on it in case of camera installation. You will have to redo external calibration routines every time you open a tube.
There is a gap between the acrylic tube and flange where the locking cord is placed, and sand goes easily inside. It makes maintenance very, very dangerous. I even do not know how to open the tube without being scratched.
Here is the photo:
I’ve just removed locks with my heart leading from the sound produced. Please, notice, that this issue was not present in the “non-locking” series, as it was possible to put flanges really close to the tube so sand has no chance to sneak into.
Fortunately, we are not going deep for now and some scratches are not so dangerous. But for the more deep-diving robots, it makes tubes and o-rings disposable, not reusable.
Have a nice week!