Arrow Rocket (Estes 13mm)

This is a fun little rocket that uses Estes Mini (13mm) motors like the A10-3T. It's perfect for smaller parks as it looks like it goes pretty high (looks, mind you, probably only gets 300 feet or so) and comes down via streamer so there's not much drift. It's a quick and easy build too.

You will need BT-5 (13mm) body tubes and epoxy for construction. An xacto knife to clean things up will help too.

Build Notes:

1) Print the nose cone with 100% infill for weight.

2) Use kevlar line for a shock cord, about 2 feet of it. The line goes through the holes in the bottom of the nose cone. These are a half loop so threading in one makes it come out the other.

3) Poke two small holes about a half inch apart in the top of the body tube about 2 inches from the end. Thread the kevlar line through these holes, knotting it at the bottom hole. It's probably easier if you do this BEFORE attaching the nose cone. Epoxy over the exposed part of the kevlar line on the outside of the body tube.

3) Glue the motor block inside the bottom end of the body tube so that a 13mm motor is flush with the end of the tube when hitting the block. Use a motor to space this correctly.

4) Print the fins with support everywhere to support the upper ring. Clean it up with the xacto knife then glue this so that the threaded part is flush with the bottom of the body tube. Put epoxy fillets along the fins for strength.

5) Attach about a foot and a half of 1" streamer about 3-4 inches from the nose cone end of the shock cord. Use tape folded over the kevlar thread to do this.

6) Paint it brown with two red fins and a silver nose. No, really, just paint it however you want. My paint job was a rush job as I was trying to get several rockets done at the same time before launching on a weekend.

7) Use 1 sheet of wadding, it's a tiny rocket tube.

I've flown this twice on A10-3Ts and it's a pretty impressive flier on those. It should fly on lower power motors but do so at your own risk as I've not tried it.

-