Loadstar was my first 2-stage rocket. In a 2-stage rocket, the staged engines follow a sequence–the first stage engine burns out, and the second engine starts the next stage. This second engine helps the rocket get an extra boost and fly very high. The small payload area in Loadstar is perfect for putting an altimeter to measure the altitude. Loadstar is a relatively bigger rocket and requires a larger 18-inch parachute to get it back to the ground safely. The large size makes it easier to build for the new rocketeers.
Build
Loadstar II is easy to build by following the instructions provided. The most crucial part of the build is getting the fins perfectly aligned. Take your time marking the tubes as specified in the instructions. The more precise the alignment is the better the stability of the rocket.
Launch
I used the B6-0 and A8-5 engines to launch the Loadstar. It is incredible to watch the rocket complete a stage and then get an additional boost with the second engine.
The recommended engines: Two-Stage: Booster – B6-0, C6-0. Upper – A8-5, B6-4, B6-6, C6-7
Recovery
This is a bigger rocket that needs a bigger parachute. The included parachute is 18 inches and is sufficient for the rocket to drift back.
The engines should be staged perfectly for the stages to work. Be careful about using the right amount of masking tape to fit the engine. I used a lot of masking tape, which damaged the rocket tube when I tried to force the engine inside the body of the rocket.