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    Ergonomics of suitcase handle

    Apologies is this question is inappropriate for this forum - but here is the question anyway. There are two kinds of suitcase handle - those that are rigidly fixed to the body of the case and do not move in any axis. Then there are those which are attached in such a way that the case can...
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    Help with physics of carbon fiber guitar case suspension system

    I think systems involving bladders/gas etc would be expensive, complicated and likely to scare off musicians who like simplicity. Tonight I have been looking at various sources on impact absorbing materials. It seems that EPS and EPP have the best impact absorbing performance - considerably...
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    Help with physics of carbon fiber guitar case suspension system

    I too like the progressive layers of foam idea and have had this in mind for some time. There are no agreed ratings for guitar cases etc and so what I am looking for is first an understanding of the physics and second some tests that will make sense to musicians - eg dropping a case down some...
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    Help with physics of carbon fiber guitar case suspension system

    Thank you - all your replies are immensely helpful. I'm doing some research on Sorbothane. Does any one know of other materials that have excellent shock absorbing properties? I seem to recall reading about some material made of micro balls within a viscous material - does that ring bells with...
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    Help with physics of carbon fiber guitar case suspension system

    Thank you - I'm grateful for this - some light begins to dawn. I don't understand your use of term 'acceleration' in the situation where the case has come to a sudden halt. Could I use de-celeration and still be right? I also don't understand why the weight of the case doesn't matter - surely...
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    Help with physics of carbon fiber guitar case suspension system

    I'm developing a range of carbon fiber cases for guitars, violins and laptops. The cases have a suspension system of high density closed cell foam pads which hold the instrument where it is strongest eg base of the body, where the neck joins the body. It has been suggested that it would be...
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