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When you buy the AT G64-7 White Lighting, you get a bag of parts
like this. |
The G64 is a typical RMS engine containing "O" rings,
delay element, spacer, ejection charge, forward insulator, igniter, instructions and
propellant grain. |
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Here the delay element is insert into its tube. To the left of it
is the delay spacer which goes in the top of the tube keeping everything in place. When
placed in the forward closure, the end of the tube with the spacer goes toward the grain
(facing down). Don't get grease on the delay element. |
The forward closure of the casing, "O" ring and delay
assembly. The threads of the closures and all "O" rings are greased to allow
good sealing and quick disassembly. The "O" ring goes in first then the delay
assembly into the forward closure. Be careful, you do NOT want to get any grease on the
delay element itself. You can use the silicon lube sold by Radio Shack for the grease.
Also, check the small hole at the top of the forward closure to make sure it is clear. If
it is blocked with grease or dirt, the delay element can't fire the ejection charge and
you will have a lawn dart. Trust me. I know. |
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What it should look like before screwing it into the casing. |
Next the propellant grain tube is inserted into the liner tube. |
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To ease removal of the contents after firing, lightly grease the
inside of the casing before inserting the grain/liner. The liner is then inserted midway
between the ends of the casing. If you use too much grease, it will come out the other end
and enter the delay assembly tube causing big problems! |
At the forward end of the casing, the flat insulating washer is
inserted, then a greased "O" ring and then the forward closure is threaded
on. |
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The nozzle very often is plugged with plastic flashing which needs
to be removed with a pointed object. |
At the casing's aft end, the nozzle is put in place and then the
last "O" ring and the aft (gold) closure is screwed in. |
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Almost ready to use. The last step is to put on the forward end
the ejection charge which is in the left red cap. The right cap is used to hold the
igniter in place. Masking tape can also be used. |
The completely assembled G64-7 motor with igniter. Never, ever
ship or transport a motor with the igniter in place. |
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The motor being fired on the ground
under a controlled experiment.
See video page for actual video. |