Recrystallized Rocketry

Serious about safety, silly about the rest

Material available at: jamesyawn.com and www.jamesyawn.net.
If one doesn't work, try the other!
Rocketry image 1

Aiptek Goes Hi-Def

Aiptek high-definition camcorder in Sugar Rush

Cheap digital camcorder catches flight movies.
How to build this camera mount.

Rocketry image 2

What this site is about

Nourishing the spirit through learning, thinking, and discovery. Flights of fact and of fancy. Extraordinary achievements using ordinary things. Making ROCKETS!

What this site is NOT about

Bombs, weapons, crime, hate, and fear. If you have intent to harm persons or property, you may NOT use my methods! Rocketry is inherently dangerous. Adopt high ethical standards and practice them faithfully.

Amateur Icelandic Rocketry

Amateur Icelandic Rocketry

Launched sugar rocket (Nov 2006).
First amateur rocket launched in Iceland by Steinn, Smeyr, and Magnus.

Media coverage
Dire Warning! Activities shown here may not be legal in your area. Check your Federal, state, and local laws before engaging in rocketry! Some have been prosecuted for transporting sugar propellant across state lines.
The Propellant
  1. Safety First - MUST read this page and heed its instructions.
  2. Electric Skillet Rcandy - Make large amounts quickly. See also Model Rocket Movies.
  3. No Karo? No Problem! - Alternatives to corn syrup: dextrose, fructose, glucose syrup.
  4. Recrystallized KN/Sucrose - Oven method (no longer recommended; skillet is better).
  5. Static-Load Compression, Drop Tests, Tensile Strength, Lacquer, Iron Oxide, Sugar Syrup, Titanium, Toaster Oven Rcandy, NaNO3, "Candy Rocket".
NEFAR & Other Launches
  1. December 13, 2003 - NEFAR - First Sugar Rush launch with 54mm Loki casing.
  2. May 2004 - NEFAR, Ti-enhanced Rcandy.
  3. ...and many more documented launches, videos & stories throughout the years!
Model Rockets
More Techniques & Projects

Latest Post – Feb 2009: Sentinel Launch

We had a propellant-making workshop at North Florida Community College, hosted by Terry Zimmerman, Chair of their Physical Sciences department. Several groups of students each made a small batch of propellant, and packed one 54mm grain. These were assembled into the motor which flew in the Big Bird at this launch.