What are the differences between the economy Blimp and the Nylon Blimp?
The economy Blimp is made with polyurethane vinyl 3.5mil thick and the 2 ply Nylon blimp has a bladder that has the same thickness. This material stretches, so it is possible to “overfill” the blimp to gain extra altitude. The material also seeps. It is porous. This means that it will need to be refilled about every two days. A quick shot of helium is all that is necessary. If it is punctured, it must be repaired. Something else to keep in mind … since the material is porous, helium can escape, but also, air can enter, diluting the helium! If the blimp is overfilled, the helium will eventually seep out and the material will stretch back to its original shape, sometimes creating a vacuum in the process which pulls air into the blimp. Over time, the helium is diluted with air and will not lift the same payload to the same altitude. The Blimp can be purged by standing it on end and allowing the air to settle to the bottom. Then release the fill valve port and let the air out. Worse case
