Recently at OpenROV we have noticed that although the current tether management system is sufficient and simple to build, it is a little cumbersome to use especially when you are using large amounts of tether. This thus inspired us to build a simple, low cost tether management solution that could fit in the box with the ROV during transport.
The design is made mostly from acrylic and is comprised of two main parts; an outer, non-rotating, reel that contains a slip ring and mounting points for a belt clip and an adjustable camera tripod, and a inner rotating reel in which the tether physically wraps around plus an handle for easy rotation
(The outer reel with the slip ring)
(the CAD model of the inner reel)
One of the big questions which we are not sure on is what type of mounting system is most optimal for the reel. Do most people want to wear the tether on their belt or mounted to the floor or a pole? Because of this we opted to have the reel try to capture best of both worlds by having built in screws intended to mount to a belt clip as well as a 10-24 nut which is the standard size bolt used on camera tripods. Our initial thoughts were using a flexible “octopus style” tripod because of their versatility to attach to multiple surfaces, yet a more rigid style tripod could be better for different situations.
(the backside of the outer reel, the 10-24 nut is intended to mount to a camera tripod, and the four machine screws attach to a belt clip)
(an "octopus style" camera tripod holding up the reel)
Let me know what your thoughts are or what other tether management systems you have come up with. I'll post the CAD files on the github soon.
Additionally a parts list is attached below.
319-PartsList.docx (18.8 KB)