Just weighed the completed Honest John: Weighs 3.1 ounces.

Will a C-sized engine lift this much weight?

The shorter 30" version will be considerably less.

AS a BAR from the 1960's Estes rocket in the back of Boys Life Magazine, and then again in the 1980's when my kids were growing up, not sure about rocket engine sizes to lift this.

Been doing Stomp Rockets for quite a few years now, this is my first try at powering with the Estes style engines.

Need help making sure that these are designed and matched to the correct size engines...