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| Building a Fire Piston - by Craynerd |
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| Bogstandard:
On no account put any flammable liquids into it to help things along. They will diesel very easily, and can easily punch a neat hole thru your hand or any other part of your body that gets in the way, as the two parts seperate at high speed. Bogs |
| BillTodd:
Nice :) I wonder if a ceramic piston and cylinder head would help? (lower thermal conductivity) and perhaps a hollow push rod to carry some extra tinder cloth. Bill |
| raynerd:
Bill - I know they make these very often out of wood and there are a few people who I have seen have made them from metal like this one. Bill, what do you mean by a cylinder head; how would this be fitted? I must admit, there is a very smart one on youtube under firepen. I`m interested in this as a science principle - I really didn`t think the concept would work! I can imagine the heat generated would ignite a gas but never thought it would ignite a solid fuel! This looks excellent as a demo... |
| madjackghengis:
Hi all, the only time I have ever seen this before, was a demonstration by a native, I believe it was in Australia, with a carved wood form, which was technology handed down "forever" according to the person demonstrating it, and it had always been their tribal method of lighting fires, the only one in use at the time. The man demonstrating it used fluff from some seed pod for tinder, and had a fire going before the technical expert could light one with a match. I believe the demonstration was in the late sixties, or early seventies, and it had just been discovered by our modern cultural analysts, with nothing but amazement at the means, and no explanation as to how it was derived, just the jarring fact it worked, and had been in use for hundreds of generations. I was a boy Scout at the time, and busy with flint and steel with dryer lint for tinder, and made a model which worked, exactly according to the design explicated by the native. If I remember right, it was a piece of wood which grows by water and has thick bark which can be removed much like making a whistle, while wet, and yet when dry, fits like a cylinder over a piston. The method was to put the tinder in a divot in the end of the stick, hold it upright, and slip the bark/cylinder with a plug in the end, over the stick, and forcefully slam the cylinder down over the stick, then pull it up to reveal the glowing tinder. I would say I saw it back in the late sixties or early seventies and needless to say, was amazed and flabbergasted at the extraordinary display of ingenuity it was. thanks much for reminding me of this long forgotten idea. :bugeye: :beer: Cheers, Jack |
| dbvandy:
UN... REAL...... Thanks for sharing... will be making one today... BTW... $90 on ebay..... say wha????????? http://cgi.ebay.com/Survival-Pen-Fire-Piston-Ferrocerium-Rod-/300537997639?pt=LH_DefaultDomain_0&hash=item45f975e947 Doug |
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