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Jim in Idaho

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About Jim in Idaho

  • Rank
    Member
  • Birthday 12/21/1948

Profile Information

  • Gender
    Male
  • Location:
    Blackfoot, Idaho
  • Interests:
    Prospecting, machining, equipment design/build, predator hunting, flyfishing
  • Gear Used:
    Whites GMT, TDI-SL, DFX. Homebuilt mineral jigs/with auto-feeder, for gems. Polaris 4 x4 ATV

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  1. That pack is cheaper now than when I bought it. I'm pretty sure I paid $150.00 for mine. Jim
  2. This is the pack I'm using. Direct plug-in replacement, but 14.8v nominal rather than 11.1v of the other lithium ion offered. Actual max voltages are 16.8, and 12.6. Nominal voltage on li-ion is 3.7v/cell. Max is 4.2v/cell https://www.ebay.com/itm/Whites-TDI-SL-custom-Li-ion-14-8v-Battery-Higher-voltage-to-push-SL-to-new-depth/222810586564?hash=item33e08bbdc4:g:HfMAAOSws5Baah8g
  3. LOl....I'm not going past 16.8v with mine...thank you very much. but, if you let the smoke out, you can refill it with this... https://www.ebay.com/itm/Interlogix-Smoke-in-a-Can-Safe-Secure-Smoke-Detector-Testing-SM200-FS/272771573113?epid=1900573491&hash=item3f8273e579:g:AqQAAOSw6B5Zcj02
  4. The 4-cell lithium pack maxes at about 16.8v. I've been running that pack in my SL for a couple of years with no problems. But, the capacitors in the SL power supply are rated at 16.0v, so running the fully-charged 4 cell pack is taking advantage of the safety factor built into those capacitors. One of Whites engineers mentioned in a post that as long as one stayed below 18V he was probably OK. I did a lot of testing of the voltage differences on depth and sensitivity, and there's a definite benefit, but it's mostly confined to the larger coils. In air tests my SL, with the 12" factory DF coil can detect a 1 grain bar at 3". It can detect a nickel at nearly 17". That's about a 20% improvement on the 12v battery pack. Jim
  5. Doc, if you look at this chart, you can see the difference in magnetic susceptibilty. Silver is about 50% higher than gold. When you add in what Jim H. said, you can see why nuggets are more difficult to detect. This chart also shows why pulltabs and aluminum cans are so easily detected. Jim Magnetic_Susceptibilities_of_the_Elements.pdf
  6. Conductance is a simple way of explaining the difference in metals, but what really matters is the metal's ability to generate, and hold a magnetic field when current flows through it. Jim
  7. Need Help With Possible Meteorite ID

    Ya know, that's something I hadn't even considered. I appreciate that idea. It sorta looks like it was formed in rock. I guess I should do a specific gravity test on it to start with. Right now, though, all my time is spoken for. But, that's something I should do this winter. It's also too big to weigh on my little Gem Pro 250 scale, too. Jim
  8. Need Help With Possible Meteorite ID

    Yeah...I hadn't even thought of that, but the wife mentioned it while looking at it last night. So, I naturally thought.."I know just where to ask"...LOL. I first thought it was from the firebox of a locomotive, but there's no way that would be hot enough to melt iron or steel. It was found about 100 yards from the tracks. There is quite a bit of junk laying around that area. I think that stop was sort of a track maintenance place. There are cinders along the track there for a ways. There's no water available there. That track originally ran up to the town of Mackay where there was a substantial copper mine, and also serviced the gold and silver mines in Montana, and the Idaho area around Salmon. Now it runs out to the Idaho Engineering Laboratory. Jim
  9. Need Help With Possible Meteorite ID

    It's not actually rock, Fred.....it's solid metal, though I am definitely not arguing that it's a meteorite....I have no idea what it is. Jim
  10. I guess I'm as big a moron as all the other meteorite wannabees, but here it is. I found this hunk of metal out in the Idaho desert. It was in the vicinity of an old railroad stop. That railroad dates back to the late 1800's, and that stop was abandoned long ago. I figured the rock had something to do with the railroad, but looking at it the other day, I started wondering. I had it checked at a local scrapyard a couple of years ago, and the gun showed it had +/- 10% nickel. It will cause a round magnet to roll around. It's about 2" across at the widest point. What say you experts? Everything I know about meteorites could be written on the back of a postage stamp, with room left over. The closeup pic is a small broken face. We ground a flat spot on one side so the xrf gun could get a reading. Jim
  11. Couple Rocks

    Interesting how one man's rarity is another's common find...LOL Jim
  12. Couple Rocks

    Really nice, Bob! From what I've seen in Wyoming, and Idaho, blue flourescence is fairly rare. That "tube" nodule is also a special find. Jim
  13. Concentric Vs DD

    Good info, Steve...thanks1 Jim
  14. Makes Ya Think

    John, that trap Kiwi showed, and the one I found are leghold traps. They're not designed to kill, they're designed to close on the leg, and as the leg is pulled up, they're made to grab whatever they can...usually toes. What Fred said is the truth. I'd love to find one of those old grizzly bear traps, with the big teeth. That would be worth some bucks. Jim
  15. Makes Ya Think

    Last winter, I was exploring the McCullough Range in southern Nevada, and found a double spring # 3 Victor trap. Probably set for coyotes back when they still allowed grazing in there. It was on the edge of a drywash, and probably drug there by the critter. Still had the stake and chain attached. It was on top of the ground, so I didn't have to worry about getting "bit"..LOL It still works, too. Jim
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