Sounding One - Double Staged / Triple Clustered - 

                            A Scratch Build.....

 

Gary C. Rosenfield inspired this design / build:  

The rocket is a 2 stage design, and each stage has triple exposed BT-20 motor tubes.​

2026-01-27 Some progress on the CAD data

 

 2026-01-28 Here's the drawing package, rev 01