Reviews

• Excelsior Rocketry Goonybird Cloud Hopper (Plan) By Geof Givens

  Brief: Excelsior's Cloud Hopper is a bunny themed kit bash of the Estes Baby Bertha to build an OOP Estes Cloud Hopper. My kids (5.5 and 7.5) chose this rocket for obvious reasons; some of their comments are included below. The Cloud Hopper debuted in the 1973 Estes Catalog . Mosquito Mike has a nice page with more history and examples of Estes Goonybirds. Excelsior gets into ...