Estes 1/2 A3-4T Mini Engine HAZ

Pack. Estes offers rocket engine bulk packs in four total impulse ranges. These packs may be used with the rockets listed on our Web Site or other Estes rockets. The description of ...

performance, mini engine powered rocket with attitude that really knows how to rip through the sky. Great things come in small packages has never been more true than with this little devil. ...

Estes offers several rocket engine bulk packs in four total impulse ranges. These packs may be used with the rockets listed on our Web Site or other Estes rockets. The description of ...

Kit. The Baby Bertha is a half-sized version of one of Estes' most popular rockets, the Big Bertha. Estes took the great looks of the original design and shrunk it down to ...

This engine is a great option for an upper-stage engine on a model rocket or as a single-stage engine. Maximum lift weight is fourteen-ounces with a maximum thrust of over five-pounds! Package ...