super big bertha

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  1. hambirm2018


    Another scratch build. I call it the SBBIII HP
  2. scott johnson

    Super Big Bertha on three 24mm motors

    I'm planning on building a Super Big Bertha and installing three 24mm motor mounts. Will I need to vent the ejection charge of two of them or will it be okay if all three are ejecting into the body? I've seen where multiple motor rockets have ejection charges vented rearward, as in the Cluster...