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Most of the foam that you buy in the local stores is a plastic foam. Plastic foam does not give the protection from vibration that real foam rubber does. Foam rubber is usually white and it has a rubbery feeling. It is also normally heavier in weight than foam plastic. The foam sold by Sig and Goldberg is good foam rubber. The grey stuff you can pick up now and then is probably foam plastic. Don't use it for radios. Naturally, we always wrap our receiver and batteries in foam for protection. . Another type of foam is the harder foam that is sometimes called "G pad." It is used in motorcycle helmets and on dash boards of cars. It doesn't do anything for vibration. Your receiver will shake apart, but when the plane bashes, the receiver case won't be broken. G pad is good to put in the front of the radio compartment of any plane you plan to crash. However, don't make a box of it and stuff your receiver inside. Wrap the receiver in the soft foam rubber. You can put this package inside anything you want. |
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