On Fri, 10 Mar 2006 14:25:14 GMT, "Fred Shecter"
Gawd, I love technical terms...
Yeah, the humidity causes them to expand. Also, if the humidity is
excessive, or prolonged, the nozzle clay will become...
um, well, "poopy"...
 Actually the nozzle clay will begin to soften and disintegrate.
Friend of mine had this happen with a bunch of motors he stored in his
Depends on the motor type.
A typical BP motor with a wound paper casing will swell upon repeated
exposure to high humidity levels. I recommend storing BP motors in a
Certain propellents (e.g., sugar rockets) are hygroscopic. They will
absorb water vapor from the atmosphere. High humidity levels will
exacerbate this condition.
Keep all of your motors in a cool, dry place. Keep your beer in a
cool, dark place.
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