This instructable will show you how to make a K class sorbitol rocket motor (almost an L) with a total impulse of 482 lb sec of thrust; and will show you how to attach it to a shopping cart! Warning! I am not responsible for what you do with your motor!

Step 1: fabrication

To make this motor you will need to machine 3 parts on the lathe. I bought some aluminum tubing 2.5'' in diameter and 2.25'' ID for the motor, and some 2.25" stainless steel (304) for the nozzle. Graphite can also be used as the nozzle but wears a bit each use. I also bought some 2.5" dia aluminum for the end plugs. You will also need the appropriate snap rings and O-rings. I have drawings of the parts on CAD and have saved them as jpegs here.
Use the shopping cart bike "ible" and add your motor to that. That would be very cool to see.
You should watch out with that setup. The hot plate has hotter and cooler parts, meaning you can get local highs. I'm sure that hot plate isn't bad, because it looks expensive. But, for people reading this, it could be disastrous. See attached picture, it should be a bit safer for the people out there. The metal rings could be anything. (e.g. cut from an aluminum can)
I've also never had a cato with this design before. my secret is that the Kn never goes over 200
This rocket uses entirely green fuel. Sorbitol is made industrially from corn syrup which is green energy. potassium nitrate is mined and can be made from horse manure or even human urine. there is no pollution what so ever.

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Bio: I like to play with chemicals
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