I'm finishing a new vibratory grizzly next. The first one I built was with re-bar and didn't clean the big rocks, so I'm adding vibration. I have a 3.5 yard bucket on a Hanix excavator.
William, thanks for the very interesting history. I never looked deeply into designs or the history. What prompted me to build it was a comment made by a friend and a couple of YouTube videos. The concept was interesting and logical, so I thought I could build it and cheap. The project cost a little mor than I anticipated, due largely because of the flood of ideas.
Ever since running the little Dixie Doodlebug, I have been a proponent of the reverse helix for better production, I found a Tri-R industries [built in the late 1980's] and my dogging partner bought it out from under me [well i can use it if he aint or we aint working together] which was built by the late William R. Martin in California, his son-in-law refound the company a few years ago after mining down in Costa Rica, again in California under the name oro-industries and puts out a really nice set up or pieces to put into any commerical operation....
The reverse helix has been around a couple thousand years since Archimedes set on in a river to use to pull water out for irrigation of crops... it brought up gold along with the water.... why that didnt start a gold rush back then is beyond me..... maybe they couldnt get a good quality gas engine to turn the thing since they hadnt been invented yet.
It is reverse helix and it runs well. We have 2 sluices... One for concentrates and the second at the outlet, though we're finding out the second sluice may not be necessary. The concentrate sluice is catching 98+%, indicating good recovery with no significant losses.
Nice looking set up. Looks like a reverse helix trommel, or maybe not, depending on the direction of rotation. A conveyor feed is good to stabilize the input. Would like to see a video of it running.
Comments
btw i like your set up!
Ever since running the little Dixie Doodlebug, I have been a proponent of the reverse helix for better production, I found a Tri-R industries [built in the late 1980's] and my dogging partner bought it out from under me [well i can use it if he aint or we aint working together] which was built by the late William R. Martin in California, his son-in-law refound the company a few years ago after mining down in Costa Rica, again in California under the name oro-industries and puts out a really nice set up or pieces to put into any commerical operation....
The reverse helix has been around a couple thousand years since Archimedes set on in a river to use to pull water out for irrigation of crops... it brought up gold along with the water.... why that didnt start a gold rush back then is beyond me..... maybe they couldnt get a good quality gas engine to turn the thing since they hadnt been invented yet.
William
Idaho
I'am jealous!!!!!!
Nice looking set up. Looks like a reverse helix trommel, or maybe not, depending on the direction of rotation. A conveyor feed is good to stabilize the input. Would like to see a video of it running.
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