Jump to content

Jim in Idaho

  • Content count

  • Joined

  • Last visited

Community Reputation

68 Excellent

1 Follower

About Jim in Idaho

  • Rank

Profile Information

  • Gender
  • 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

Recent Profile Visitors

1,082 profile views
  1. Jim in Idaho

    White's Goldmaster 24K

    Thanks, Steve. Probably smart to just order it with the two stock coils and be done with it. Jim
  2. Jim in Idaho

    White's Goldmaster 24K

    Is this new unit capable of using the coils from the GMT series? Jim
  3. Here's a few pics of the commercial version. I have four of these ready to ship. I'm charging $550 + shipping. They run on 12V power, and are very quiet. I also build a skeletonized aluminum version that only weighs 11lbs. That can be easily packed into remote areas.
  4. I've been trying to come up with a unit to recover gems dry, but finally realized that the "granular convection" problem can't be defeated. In the process of building and trying various ideas, I came up with this unit. While the dry recovery of gems requires some very tight classifying, and thus isn't practical, I tried it for gold, and was simply amazed at its abilities for heavy metals. I have tried it on all sorts of raw materials, running bank feed at roughly 2" minus, and have yet to find a material it doesn't work on to one extent or another. I ran it dry...no water, on damp material at the LDMA Blue Bucket outing near Baker, Oregon a few weeks ago, and recovered flour and black sand from old tailings from previous outings. Running wet, the day before, on new material I recovered very near 100% on black sand and gold in front of several witnesses. They suggested re-running the tails, and zero black sand, or gold was found. Last weekend I attended a local club outing at Salmon, Idaho. The material was a heavy clay with lots of rocks....not a fun material, at all. At the common dig, one of the guys next to me, running a highbanker, mentioned that my little unit was handling the clay really well. I was the only person running 2" minus directly into the machine, and the rocks were agitating the material so the clay broke down, and the rocks were mostly clean before they went out to tails. The day prior to the common dig I went down to the locale the common material had been hauled from, and ran the material dry. This was a nasty, damp material. I expected nothing and was surprised to see both black sand and gold when I did the cleanup. Certainly I lost quite a bit, but any recovery working dry from damp material is an accomplishment. This unit works wet or dry. Very little dust running dry. Very low water requirement when running wet...roughly 50 gallons/hour. The full utility US Patent has been applied for. You can see the prototype running at Bonanza Bar on the Snake, along with pics of the recovery here: Jim
  5. Great writeup! But, I've got a new wrinkle on a gold pan....my automatic panning machine AKA "Sweep Jig". Utilizes a flexible bottom, or diaphragm. I've been working on this since August of '16. Patent has been applied for. You can see the old prototype running here:Sweep Jig at Bonanza Bar Works well, even without water. Jim
  6. Jim in Idaho

    TDI SL Battery Pack Up Grade

    I've been using the Reidman pack for a couple of years, with no problems. There was a recent post on another forum saying that resistor #9 got too hot to touch when he used the 4-cell pack. I haven't checked mine, but am going to keep using the 4-cell. It may be that Whites don't want to produce a pack capable of 16.8 volts when the capacitors in the power supply are only rated for 16.0v. Using the 4-cell pack is counting on the safety factor built into the capacitor rating. I'm using a charger that lets me set the max voltage, and I'm now keeping very close to 16.0v, just in case. Staying at 16v also increases the life of the pack. Jim
  7. Jim in Idaho

    What Are They?

    Man, I really like that green in the second pic, Jim...gorgeous. And I agree....DD does know his rocks! Jim
  8. I understand. I have no idea what changes he's made. I thought I bought one of his early units. I've had it 2 or 3 years. I use an adjustable-voltage charger on mine. I can set the final voltage to any level I choose. That saves pack life by limiting the voltage to 4.0V/cell. I can also use that charger on my RNB pack for the GMT, and DFX, at 12v. My adjustable-voltage charger has a wide input range, too...from 8.0 to 65v DC. Jim
  9. Jim in Idaho

    Sleeping Gear Advice Request

    Yup, Fred....I can't count the nights I've spent sleeping in the cab of a pickup when the weather turned south...even in the winter up here. ya do what ya gotta. Jim
  10. Not so, Luke. Here's a pic of my Reidman pack. No point on the bottom is higher than the perimeter edge, as seen. Jim
  11. Jim in Idaho

    All-around Vehicle For On/off Road

    I think it's mainly the cost of compliance tests for the EPA. Takes a lot of vehicle sales to get that cost back. Jim
  12. Reidman removed the factory base in his pack, and replaced it with a thinner sheet. it slides in smoothly, with no untoward pressure. Jim
  13. Jim in Idaho

    Sleeping Gear Advice Request

    Will do. I've got the auto in the Dodge, and have had great luck with it, but know nothing about the Cherokee automatics. For a really serious backroads rig a stick is the way to go. Jim
  14. Jim in Idaho

    Sleeping Gear Advice Request

    I like the sound of that. I've considered doing the same, for shorter trips. Just me an dog, don't need a passenger seat taking up room. I was thinking Cherokee, too. Jim
  15. Jamie, I don't have a clue. Jim