Scratch built cone

[MrWendal]

I was wondering if someone has any ideas for me. I want to build a cone that is roughly 12” tall by 9”d. I need it to be somewhat light and rigid. What would be easy enough to form into the shape and strong enough to fly. I was thinking along the lines of thin balsa laminated together with paper skin.

 

[powderburner]

I would cut the skin from a sheet of school poster-board, that stuff that is really just thick paper, comes in sheets like two feet x two-n-a-half, for 50 cents at W-mart? That construction would stand up to low-power motors just fine. If you are still not sure I guess you could add some cardboard centering rings?

For mid-power or high-power, you might have to double up the cardboard skin for the higher airspeeds, but the curvature of the conical surface will do a lot for you to stiffen the skin.

 

[Micromeister]

Originally posted by MrWendal
I was wondering if someone has any ideas for me. I want to build a cone that is roughly 12” tall by 9”d. I need it to be somewhat light and rigid. What would be easy enough to form into the shape and strong enough to fly. I was thinking along the lines of thin balsa laminated together with paper skin.

Heres what I did awhile back for a Maryland funny meet. Just be sure you have a gap between the model base and deflector... Bernould Lock is a pain The Model was a styrofoam 16" christmas tree blank, hollowed out, fitted with a bt-50 motor tube. flew fine on the second flight after some minor water damage repair

 

[Tools R Us]

Here is a cone made from .010" G10, thin and strong, have made them from paper too.

https://www.trailertrashaerospace.com/scout_2004.htm