[Off Grid Build] DIY Rotary Sieve (Trommel) For Separating Stone from Earth (Making Gravel) 

I think he learn the quale of matter, supported by his mellow voices

Hi

Motors are often under slung as weight of the motor on a pivot beam tensions the belts without need for tension devices. And obviously, this application calls for sealed motor and bearings. Still, an alternative configuration would be an improvement not just for motor health, but better positioning could allow placement of a wheelbarrow (ect) underneath to catch fines which are otherwise pouring on this motor....

Cannot, because the belt will pull the trommel/drum up and off the spinning wheels, which will run out of place. If you hold the drum down, it won’t spin.

You're not wrong but, it doesn't matter. That drum on the trommel would have been in the scrap bin 6 months after it was built. I tried it with drums. They are never truly round. As they flex when they are revolving they are stress fracturing. I solved the problem by rebuilding mine with 30" outer rims from a scrapped tractor.

The poor bastard doing all the shovel work was the same guy who built the dog gone thing! Beautiful piece of machinery on the cheap, I do say!!!! I could sure use something like that and someone else to shovel my gravel for me, too. Most of the dirt I'm sifting, thankfully, isn't as coarse as that gravel he's pulling, mostly 3/8" to 1/2" crushed granite and any underlying rocks deeper in the soil bed left behind by the developers. Got a short run of 3-8" river rock I'm clearing from the back yard and re-purposing into some gabion walls & planters, as well as vehicle barriers for the yard out front. Just don't know where I'd store such a behemoth like that sieve! Even as badly as I want one for efficiency of work effort, I'd have to rent some remote city yard space just to store it off the home site. I live in an HOA community OVERLORDED by the "friendly" neighborhood Gestapo and I have a wife who likes everything frilly foo-foo all around her-- she can't bear to see anything looking even slightly industrial roundabout her-- not even a little partitioned storage area behind a blind. "Something's gotta give," I always tell her-- nothing ever does from her. 😆

I'm so blessed my Mrs grew up mining... Anything like this that means not doing it by hand is OK with her.

I would rather have it above the trommel away from the dirt's path.

@@georgembugua1882 Exactly. If not above, at least to the side.

2 problems, you cant fully cover due to heat generation from the motor, other it looks as though the weight of the motor assembly is what is being used as a tensioner for the belt. The hole motor assembly needs to be move out to the side and chain driven, with 2-4 rollers on top pressing down to act as the drum stabilizers so there is no misalignment issues.

郭佳美

He is outside so he isn't exactly going to die from welding galvanized steel when the chance of inhaling fumes is at best zero. I have been welding galvanized steel inside high roof buildings with a breeze blowing through for years and I don't cough or splutter and I am not dead. So, in essence you are wrong because if the situation is right (not enclosed and you grind off the galvanized finish) you don't need respirators.

At least gringo is aware there is a danger when welding galvanized steel . You would be surprised how many folks running around with welding/cutting tools do not know that simple fact . I had been welding almost ten years before I found out it was toxic , fortunately I never worked galvanized prior to that . Better too safe than not safe enough .

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yes

should it ? the best ones ive seen drive the rollers not the drum

@@matthewheffernan3877 Yeah, no idea why I said that.

@@wearebacteria well I was thinking of driving the drum initially but watched a few more videos and bottom rollers looks the best and requires no drive tension as the traction is created with gravity. also its now possible to build other drives off the powered axle driving the drum, like an outfeed conveyor for the fines to load a vehicle

Bryant Valenti You can go off grid and still have power you know..

David Emery - It seems to me, the used 2 Standard Fuel Drums! In Canada we called them 45 Gallon Drums! There are smaller Drums, of Similar Ribbed Style, that I have seen, sometimes, that are 20 or 30 Gallon Drums, too! For a tinier one, 5 Gallon Buckets, could be The Base, but would need some Strength added, likely!

@@robertweekley5926 Thanks for the info, much appreciated.

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Wtf. There is not a set speed