I made these to assist in making a potato cannon powered foam glider. Everything is sized assuming you are using a 1in PVC barrel , and 8mm carbon arrows.
The arrow holes are 7.9mm for a friction fit, if it's too tight you can gently heat the PLA and push the arrow through.
The Tube holders have a correct and incorrect orientation, make sure you test fit before you glue them between the wing and tube!
I secured the nosecone to the front with hot glue and it worked fine up to 80psi. You could reduce the size of the z axis of the nosecone to save weight
Total weight is ~50g
Total weight of plane is ~280g
- gopro session the total weight is ~360g
If you made a fiberglass tube you could probably drop 50g (25g for nosecone, 25g for paper tube)