This is a great choice of rocket for those who want to step up to the bigger (29mm) engines. Launched once and it flew arrow straight on an E12-4 with a 24 to 29 mm adapter. Recovered with no damage. I made a couple of small modifications to the build: 1. Replaced the paper shock cord mount with a Kevlar cord tied to the motor mount. 2. Added a thrust ring. None included with the kit, instructions say to tape a small strip at the end of the motor but a thrust ring is more convenient to me. Of course, if you use a motor with a lip on the back then you don't need it. Uses the screw on plastic motor retainer system, which I love. Overall, it's beautiful, economical, and a great value. Will upload a picture soon.

In the old days, Estes had a rocket called the Screamin' Mimi that was BT-60 based and could be kit-bashed into any one of several great rockets from the past, Der Red Max and Citation Patriot being the first two to come to mind. The Star Orbiter could well be the kit-bash rocket of choice for today. I bought one and built it as a shorter version of the SO using only one of the supplied BT-60 tubes. The other one served as the lower body tube of an FSI Eos. The shortened SO goes by the name Rat Bite, which I thought was a clever use of the stock decal. Apparently I wasn't the only one.

This rocket leaps off the pad becoming a speck in sky!