This rocket is a proof of concept prototype for a future mid powered rocket. This one is light enough to fly on C11-0 to a C6-7 with an 18mm to 24mm engine adapter in the second stage. The second stage is only 65g the booster is 90g for a total weight 155g. The booster can tumble recover on a single 24mm boosted stage but with the side boosters used and the additional weight of the motors it will not tumble. To solve this you simply use standard upper stage engines in the side boosters to provide the ejection charge for a parachute and streamer recover. This gives great adaptability to match the size of flying field used.  I can only guess at altitudes so far. It has not flown yet and is under construction.

In the building of this rocket I probably should have used through the wall fins (TWF) method for the fins. The second and last worry is scorching when transitioning to second stage.