My first rocket was the Estes Marauder. Built it with my Dads help back when I was six years old. I no longer have the rocket, but I still like the design. So I decided a while back to build an upscale version of it. I finally got the final pieces I needed to build it, so I got out my epoxy, knifes, and sandpaper and started building . Its a approximately a 250% upscale from the original Three inch tube to four inch payload bay. Sports a 38mm motor mount for G-I flights.