Materials:

 

Grain:

1-4 Inch legnth of 1/2 inch PVC

1-3/16 inch dowel

1-3/8 inch dowel

6-Teaspoons of Potassium Nitrate (KNO3)

4-Teaspoons of table sugar

1-small pan

1-stick

 

Closures:

2-1/2 inch pvc caps

1-small amount otf Duhrams Rock Hard Water Putty

1-Drill

1-3/16 inch drill bit

 

Instructions:

 

The basic sugar motor is fairly easy to build.  First mix the KNO3 and the sugar together in the small pan.  Add enough water to wet all of the ingredients but don't put too much.  Heat it on a hot plate that is preheated to 380 degrees.  Leave it on the hot plate until the propellant is thick.  Scoop the hot propellant into the pipe, and pack it with the 7/16 inch dowel.  Then ram the 3/16 inch dowel down the center of the propellant.  Let it dry for 5 minutes and remove the dowel.  Let the rest of the assembly dry for at least an hour.

     To make the closures, mix the water putty as directed on the tube it came in.  Then pour the mix into one of the  PVC caps filling it half way.  Wipe the putty off of the rim and inside edge of the cap and let it dry overnight.  Then drill a hole down the center of the putty and the PVC for the nozzle end. A larger hole will make a long burn motor and a small hole will make a short burn.  A hole smaller then 1/8 of an inch will probaly CATO the motor .

     For final assembly glue the end caps on the grain with 30 minute epoxy or Christy's Blue PVC glue,let it dry for about an hour, then ignite.

 

For ignition methods, see the page titled "Ignition Methods"