That was pretty to watch mate and I love the windometer. Well done.
Mackka
Mackka
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- Thread starter Moneybox
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Moneybox said:
Great effort. It was a good thing that the wind was blowing and away from you.
Rob P.
Maybe set it up on a swivelling base-if possible?
Moneybox
Philip & Sandra Box
davent said:
Sure, it works just like it was meant to but I still have a few bugs to sort out. The classifier worked well on the lease where I took it this week but on the previous spot the sharp gravel sticks into the mesh both big and small so hard that it's impossible for them to vibrate out. I don't think I can fix that.
The reason I brought it back home is because the serpentine belt slips under heavy load. As soon as it slips then the conveyor slows down and overloads. I created the problem when I initially set it up. I had the belt tensioner on the approach to the drive pulley, it should have been on the slack side so I'll sort that out. I'm rearranging the pulleys so that the belt wraps further around the pulleys for more grip.
If you look at the serpentine belt on you car engine these belts rarely slip. I didn't expect any trouble with a 10hp engine.
I have a bit of soot in the engine bay so I need to improve the exhaust extraction. I couldn't find a suitable sized aluminium tube when I originally did it so used one that was too small. I'll sort that out even if I have to make up a piece of tube.
I used a rubber mounted bearing on the pulley end of the wobble shaft but that didn't work well when I had to apply more belt tension. I'll change that to solidly mounted bearings and a flexible coupling to the wobble shaft.
Overall there's too much work to be done in the field and it only takes me half an hour to get it back to the lease although we'll most likely test it again on the lease close to home where the sharp gravel is a problem but the gold is more plentiful
silver
silver
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Lookin great Mb (what was your first weigh in ?
Dusty bugga too hey.... should you have a remote kill switch for safety, just incase you need to shut it down in an emergency and the dust makes it hard to see if your reaching into the right spot.
Dusty bugga too hey.... should you have a remote kill switch for safety, just incase you need to shut it down in an emergency and the dust makes it hard to see if your reaching into the right spot.
Thats impressive :Y:
Always a great feeling to achieve what you set out to do especially amidst the unknown
....and starting from scratch ... with your own hands ... a very proud moment indeed
Congrats :clap:
Im wondering about the spoil from the classifier , could become a problem in more ways than one
Is there going to be another conveyour to take that away ?
Or just scoop it up with the loader?
Be careful not to scoop up the edge of the unit ...
Always a great feeling to achieve what you set out to do especially amidst the unknown
....and starting from scratch ... with your own hands ... a very proud moment indeed
Congrats :clap:
Im wondering about the spoil from the classifier , could become a problem in more ways than one
Is there going to be another conveyour to take that away ?
Or just scoop it up with the loader?
Be careful not to scoop up the edge of the unit ...
Really enjoy these posts. It looks like a lot of hard work about to bear fruit. Could you go to wider or twin pulleys with more belt contact like my old 3 phase compressor runs.
Moneybox
Philip & Sandra Box
silver said:
Total is only 6g but that's the scrapings from right on the surface. I started there to clear the rusty cans so that we could run over with the metal detector. We did about half the patch for one 0.5g nugget so it wasn't worth the trouble although that might all change once we get down 300mm beyond the reach of the dozens of detectors that might have been here first. We're only 3km from the centre of town so this ground has had a lot of attention over the years.
I have to scrap thin layers off the top or the soil comes out in lumps and just falls off the classifier. The machine has no way to break down lumps of clay. That would be a whole new process.
I could easily install a kill switch but I'll try to keep the engine end upwind although that might be impossible some days where it swings every few minutes.
Moneybox
Philip & Sandra Box
Sandta said:Thats impressive :Y:
Always a great feeling to achieve what you set out to do especially amidst the unknown
....and starting from scratch ... with your own hands ... a very proud moment indeed
Congrats :clap:
Im wondering about the spoil from the classifier , could become a problem in more ways than one
Is there going to be another conveyour to take that away ?
Or just scoop it up with the loader?
Be careful not to scoop up the edge of the unit ...
I'd love to have a conveyor looking after that waste but it would have to be a solid unit. On the lease close to home where we did the first trials the rocks were over 300mm in size and left damage on the side of the bin after bouncing off the loader tyres. I'm going to try to drag that dirt out and take the big rocks out first. It's all sharp stone but has quite a bit of gold amongst it. This pile has very little stone but clay lumps so I'll drag it out with the loader and perhaps back-blade it and then put it through again.
Moneybox
Philip & Sandra Box
The geezer said:
I think I can do it with this belt. If not I'll most likely end up with a toothed belt just between the engine and diff then take the other drives from there with the serpentine belt. I'm adding pulleys to get more wrap, altering the top wobble shaft so that it can take more vertical load, moving the tensioner to the slack side and modifying the tensioner so that I can get more belt tension. I was a bit slack on the original setup because I didn't think the little Honda had the guts to slip the 6V belt.
I'd have it sorted out today but this place is dead quiet in the evenings and the morning so I feel guilty getting out there with a hammer and grinder. It's 8:43am and I've been out there sneaking around since 6am doing little quiet jobs.
Maybe not appropriate for you but just a thought Moneybox. https://www.flipscreen.net/?gclid=C...X7jLT4tmRZ8N4FlSSvs4WgxrwAi7esRRoCReoQAvD_BwE
Moneybox
Philip & Sandra Box
Goldfreak said:
Yes this would solve some problems. Then of course we have to consider the cost vs return. If crushing produces just a few more grams than we're better off pushing that stuff aside and processing what will pass through the screens.
Looks good moneybox your mesh classifier might be better if it was straight grizzly bars you dirt may slide off better I know its a lot of work to make a grizzly set up with the gaps you require but worth a thought cheers all the best Muk.
Moneybox
Philip & Sandra Box
Muk said:
Yes can be done but it seems that some soil works quite well with the mesh and it's a simple fix. I remember making classifiers in the 70's or early 80's for River Sands just south of Brisbane out of piano wire. Lots of wire, lots of holes, hooks and adjustment bolts. No doubt they worked well as long as they were protected by a grizzly above. While I'm working that lease 3km north east of Cue I'm in alluvial ground so the mesh works well. The other lease has sharp stone that grips and even with a grizzly it would be best much steeper.
Moneybox
Philip & Sandra Box
Goldfreak said:
Yes you might be right but it's all we need to crush the clay balls. They will squash by foot or with the loader wheel but I don't know yet whether it's worth the extra work. Once I get into paying dirt then I'll work out if I'm losing too much in the lumps. Maybe down the track we run a wet plant with recycled water to reprocess these piles but I can't outlay any more time and money before recouping our expenses to date.
silver
silver
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One of these Mb
Rotating screen, but with a two way conveyor system
I like how tyers are used for rotary purposes
You could just set it up nearby to use it.... doesn't have to pour into it(your current machine) . Longer it is the more it would break up the dirt though
Rotating screen, but with a two way conveyor system
I like how tyers are used for rotary purposes
You could just set it up nearby to use it.... doesn't have to pour into it(your current machine) . Longer it is the more it would break up the dirt though
Moneybox
Philip & Sandra Box
silver said:
Yes, perfect Silver but it still needs to be wet then you end up with a scaled down version of Brother's operation. Just another project that can be built if there's enough time money and return on investment
