I have been working on an idea I had and I'm looking for some Suggestions/Advice/Input/ etc etc, good or bad. With my design, you can adjust to the case length you are going to use (without needing additional adapters to use shorter cases), use in multiple rockets, check/replace your shock chord.... Its definitely still in the prototype stage and adjustments are still being made.
So far, there are 2 configurations, Single ER (Expansion Ring) or Dual ER. When tightening the bolt, it will expand the center ER and contact the inner walls thus clamping into place (like rear drum brakes). The eyebolt on the top is either pinned in place or JB welded to a bolt or All-thread... anything to keep it from spinning. I'm still working out any problems with it spinning while tightening. So far in the prototypes I have made, this doesn't seem to be a problem but i know better than to trust that design. As far as materials, I plan on 6065 Aluminum for the end plates and the center ER will be 3D Printed TPU, although the PETG ER on the prototype grips hard enough that smacking the end of the all-thread rod with a 5lbs hammer didn't even move it.
I added some pics of the CAD and a prototype (not the final materials). The bolt used isn't the correct size either but its just a prof of concept at the moment.
Any Input is appreciated and welcome.
So far, there are 2 configurations, Single ER (Expansion Ring) or Dual ER. When tightening the bolt, it will expand the center ER and contact the inner walls thus clamping into place (like rear drum brakes). The eyebolt on the top is either pinned in place or JB welded to a bolt or All-thread... anything to keep it from spinning. I'm still working out any problems with it spinning while tightening. So far in the prototypes I have made, this doesn't seem to be a problem but i know better than to trust that design. As far as materials, I plan on 6065 Aluminum for the end plates and the center ER will be 3D Printed TPU, although the PETG ER on the prototype grips hard enough that smacking the end of the all-thread rod with a 5lbs hammer didn't even move it.
I added some pics of the CAD and a prototype (not the final materials). The bolt used isn't the correct size either but its just a prof of concept at the moment.
Any Input is appreciated and welcome.