AAA dummy battery
in [Design]
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From: Sylvia Else on 11 Jul 2010 01:50 On 10/07/2010 8:03 AM, D Yuniskis wrote: > Winston wrote: >> On 7/9/2010 12:21 PM, D Yuniskis wrote: >> >> (...) >> >>> Why not just turn down a solid *bar*! :> >> >> Cu tubing is cheap and available everywhere. > > Yes, I was being facetious. ;-) > > I once (as a kid) asked for a length of "cold rolled" > to use as an axel in a go-kart I was building. Dropped > by his (machine) shop the next day to find a guy turning > my axel -- complete with keyways, and threaded ends > predrilled for cotter pin locks! I suspect the > labor in that axel was worth more than the rest of > the go-kart! :-/ If you came a cropper on it, it wasn't going to be his fault! :) Sylvia.
From: Michael A. Terrell on 11 Jul 2010 01:59
Winston wrote: > > On 7/9/2010 9:56 AM, D Yuniskis wrote: > > Winston wrote: > >> On 7/9/2010 8:16 AM, Dawn wrote: > >>> Does anybody know where I can purchase a AAA dummy battery (or many) > >>> online? > >> > >> Can you provide a little more information please? > >> Are you substituting a 'wall wart' power supply for > >> battery power, for instance? > >> > >> Are you creating props for a show? > >> > >> These have different answers. > > > > The "dummy" AA (not AAA) "batteries" that I have are used > > in place of *real* "batteries" as "place holders". > > > > E.g., 8 alkalies + 2 dummies = 10 NiCd's > > For that particular application, I would contact my > friendly local machinist. Have her part off some > 1/4" copper tubing to the proper length, solder > plugs into both ends, clean it to within an inch of > it's life and then place it into an electroless tin > bath for a day or so, then clean it off and use heat > shrink tubing to insulate the outside. > > But that's just me. Copper? Are you nuts? Just use a piece of drill rod, cut to length. Or even chop off some pieces of bolt or all thread. Then slip a piece of heat shrink over the metal. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |