Also you can look up many designs on Rocket Reviews I found this: http://www.rocketreviews.com/unknown-honest-john---madcow-rocketry.html As for the casing sticking out. Happens all the time. I know some people don't like it (It's been debated on forums - mildly). Some feel the heat of the casing is detrimental, others somehow feel the ejection charge will be harsher or not as effective. But no one ever gives any evidence. At least none I've seen. I like to burrito wrap my chute in the protector or use a cup style protector, so I am not worried about proximity of the charge. --------------------------------------- Jeff Gortatowsky, Redondo Beach, CA | Twitter: JeffGortatowsky | Yahoo: indanapt Facebook: http://www.facebook.com/jeffgortatowsky Blog @ http://skepticalastronomer.wordpress.com "(Scientific) Skepticism is not a set of beliefs, it is a set of methods for asking questions about reality." -- Doctor Steven Novella