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Thread: It has gotten quiet aroind here.

  1. #21
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    Quote Originally Posted by sdk1968 View Post
    J,

    so were these the big counterweights on the telescopes on cables? or like the kind used on garage doors?

    most of the blocks of lead ive given people have been counterweights on lab hood doors. they are usually 4" x 4" x 24" or 36" long.
    These are just plates maybe 3/4" thick, 4 x 12 or so. Each stamped 25 lb with a corner cut off - trimming down to weight I guess. They were bolted on in various places and used in racks that were installed in place of instruments that had been removed in order to maintain balance. That telescope was a 12 meter radio dish, a very early design that needed a lot of weight added to balance. Newer designs are a lot lighter and also better proportioned so that the structure itself does a lot of the dish balancing so that they can get away with some pretty thick steel weights instead of lead.

    The optical telescope where I just finished up working had much less counterweighting, just a few hundred pounds for the telescope, then a couple tons for this box we called the windbaffle. That ikd 12m telescope must have had 20 tons of lead for balancing.

  2. #22
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    So that's where the majority of lead goes in the world, not bullets, but telescope counterweights! Lol!
    14EH AIT Instructor-PATRIOT Fire Control Enhanced Operator/Maintainer

  3. #23
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    I was able to find some IMR 4227 and it just came in today
    C34EF28D-2788-4041-82AA-FA12B6169C0B.jpg
    Also found some nice 16 gauge hulls
    EE86886B-5CC4-4BCF-9310-98919C2191EF.jpeg
    We thought about it for a long time, "Endeavor to persevere." And when we had thought about it long enough, we declared war on the Union

  4. #24
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    Quote Originally Posted by Norton View Post
    I was able to find some IMR 4227 and it just came in today
    I ended up buy some of that Norma powder that luigi pointed out, a pound each of three flavors. Good for 7.5 Swiss, 32 spcl, 45-70, and 308 if I ever get the dies (and use up all the nice ball ammo I have on hand!).

    Nice find on IMR Norton. Makes me wonder if things are improving a bit.

    Quote Originally Posted by scottz63 View Post
    So that's where the majority of lead goes in the world, not bullets, but telescope counterweights! Lol!
    Yep... and now I am recycling it back into useful little blobs. Aren't I the greenie! I'd get a good laugh out of that dour little Swedish kid's reaction!

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