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Rifles, Reloading, Optics, Equipment
Reloading
Looking to upgrade my balance, suggestions?
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<blockquote data-quote="milanuk" data-source="post: 288456" data-attributes="member: 376"><p>Win69,</p><p></p><p>My formal civilian education is perhaps a bit behind yours... but my 'applied' training was mostly directed towards 'how does this work?'. It's been a while, though. Having to blow out some cob webs and dust off some books. Which is why I take an interest in this sort of thing... whether I'm right or wrong, I want to *know* <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>boomtube,</p><p></p><p>You really seem to have a thing for eddy (Foucault) currents <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> I will spot you that there *is* such a thing as an 'eddy current brake' that works much like what we have here: copper plate between two magnets, typically used for slowing down things like mag-lev trains and roller coasters. It does appear that it is relatively weak at low speeds - which is where reluctance seems to have an edge - it is a weak force to begin with. I did not know about those particular applications until I was digging around some more this morning. As for explaining the 'magic' behind reluctance... this is about the best I can provide: <em>The concentration of flux in low-reluctance materials forms strong temporary poles and causes mechanical forces that tend to move the materials towards regions of higher flux so it is always an attractive force(pull).</em> Copper not being a low-reluctance material (in hindsight the reluctance motors I worked with *did* have iron pole pieces)... perhaps it is 'just' eddy currents. Looks like you were right after all. Point to you <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="milanuk, post: 288456, member: 376"] Win69, My formal civilian education is perhaps a bit behind yours... but my 'applied' training was mostly directed towards 'how does this work?'. It's been a while, though. Having to blow out some cob webs and dust off some books. Which is why I take an interest in this sort of thing... whether I'm right or wrong, I want to *know* ;) boomtube, You really seem to have a thing for eddy (Foucault) currents ;) I will spot you that there *is* such a thing as an 'eddy current brake' that works much like what we have here: copper plate between two magnets, typically used for slowing down things like mag-lev trains and roller coasters. It does appear that it is relatively weak at low speeds - which is where reluctance seems to have an edge - it is a weak force to begin with. I did not know about those particular applications until I was digging around some more this morning. As for explaining the 'magic' behind reluctance... this is about the best I can provide: [I]The concentration of flux in low-reluctance materials forms strong temporary poles and causes mechanical forces that tend to move the materials towards regions of higher flux so it is always an attractive force(pull).[/I] Copper not being a low-reluctance material (in hindsight the reluctance motors I worked with *did* have iron pole pieces)... perhaps it is 'just' eddy currents. Looks like you were right after all. Point to you :D [/QUOTE]
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