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Post by woodyz on Jul 6, 2013 15:48:04 GMT -7
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Post by angelhelp on Jul 6, 2013 16:54:44 GMT -7
I second the motion
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Post by Cwi555 on Jul 6, 2013 17:22:35 GMT -7
I believe he already did..
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Post by Cwi555 on Jul 6, 2013 17:29:40 GMT -7
That is the same thing as the OP post, only it was a 2x4 used for the flywheel.
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Post by woodyz on Jul 6, 2013 17:39:52 GMT -7
You are correct. The sad thing is once I started to watch the video I realised I had seen it.
WOW I think my mind is going.
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Post by angelhelp on Jul 6, 2013 20:08:58 GMT -7
I think that I saw it too and had forgotten about it.
I remember, as a kid, putting 2 holes of a button on a string circle and making the button spin after an initial quick windup and a gentle outward pull with my hands. It looks like the spinning action works the same way for this fire piston.
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Post by Cwi555 on Jul 6, 2013 20:24:36 GMT -7
The largest detriment to that system is the flywheel. Without that weight storing the kinetic energy for keeping the spin up under load. It also serves a secondary purpose of maintaining downward pressure, a pressure normally applied by the hands with the conventional hand drill method. The more that flywheel weights (within reason), the more efficient that method is. Therein is the detriment. Most consider three or so pounds to be significant weight for a BOB/INCH/Back pack. The cordage, shaft, and paddle can be light by comparison, but they do add up in weight. At an average of three pounds, it's not something you want to pack unless your RV camping etc. The real significance in OT's version was the usage of materials that could be considered refuse, or scrap. It is realistically feasible to find the materials he used post SHFT/TEOTWAKI. Lots of folks have made the version depicted in this threads OP, but the one OT made utilizes all the same physics/principles with something you could actually find. I've modeled the one pictured in the OP successfully, but considered it impracticable for the intent, it had never occurred to me to make one in the fashion OT did. OT's video got me thinking about TJ's video's where he was trying to start a fire one handed. In the video, he pondered the question of how to start a fire by friction one handed. I believe this method to be the answer with the following caveats: - It would ideally be portable.
- If not portable, then field expedient utilizing one hand only.
- If field portable, then it should encompass items already at hand for a light BOB/hiking bag.
- If field portable, initial weight should be 1 pound or less, with the flywheel weight coming from field expedient materials.
Number two would be exceptionally difficult one handed. Number's one and three get hung up on the weight issue. For the one handed approach all the components for said system would have to be incorporated into the light weight BOB. So far I've tried 8 different models, but have been unable to get the weight down under three pounds. Working on number 9 now which is promising, but won't know until I've had time to complete it. That is what I believe would be viable for a one handed friction fire. (Haven't forgotten that one TJ, but work has contrived to interfere with such things)
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Post by offtrail on Jul 6, 2013 21:54:08 GMT -7
Good post cwi you hit the nail on the head.I still need to go back and make another pump drill in the field. But this time ill be using a heaver spindle to make up for a lighter flywheel. It has rained for the last 3 weeks and calling for more up through Thursday. My god when will the rain stop.
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