W9YA's L3 Certification Article
Whooie in the High Plains of Colorado Springs
Scaling up model "odd-roc" designs in order to fly them with L3 class motors generally causes the designs to either become heavy or use special/exotic materials, tooling, and methods. And often both the weight and the special equipment are required to fly with L3 class motors.
The Solution is here.
Rocket Graphics courtesy of the Crystal Space Community. Pictures courtery of Nadine Kinney, Tom Beach, Greg Elder, and Grant Finch