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Compost tumblers
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Treacodactyl
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Joined: 28 Oct 2004
Posts: 25697
Location: Jumping on the bandwagon of opportunism
PostPosted: Wed Mar 01, 17 8:54 am    Post subject:  Reply with quote    

Ty Gwyn wrote:
Surely an old electric cement mixer would do the same job,without the hasle of tumbling by hand.


The idea with a tumbler is the heap is enclosed and very easy to tumble. It's not just about the mixing, a cement mixer would mix but not provide a good place for stuff to rot. If you're going to fork the compost in each day you may as well mix it anyway.

The idea with a tumbler is I can mix a small heaps worth in seconds in each day, keeping the mixture aerated and hopefully rot quicker.

Slim



Joined: 05 Mar 2006
Posts: 4538
Location: New England (In the US of A)
PostPosted: Wed Mar 01, 17 11:27 am    Post subject: Reply with quote    

We are both weight and volume here. It varies between towns, and even within towns.

Most people pay by volume, and pay a hauler to pick up a bin of a certain size a certain number of times per month depending upon their needs. Those haulers will add surcharges if you keep putting out noticeably heavy bins however, as they are paying by weight further down the line. (or maybe they just make you pay for more frequent pick-ups)

The more frugal of us haul our own trash to the transfer station, and there you can pay by volume or weight, though I think they'd prefer to charge you by weight. (I usually pay by volume because I recycle and compost a lot, so my leftover garbage is often heavy....)

Anything larger at the transfer station is done by weight (i.e., a truckload)

dpack



Joined: 02 Jul 2005
Posts: 32779
Location: yes
PostPosted: Wed Mar 01, 17 11:53 am    Post subject: Reply with quote    

just a thought but would scrap heap challenge including a pv panel, a windscreen wiper motor , a rotor as one of the bearer rollers, some gears and a big insulated barrel be a place to start with a domestic version of the commercial tumblers.
a bit like a tumble polisher for stones , even a hand turned one might be easiest if the drum is supported on a pair of rollers.

the huge ones go from waste to compost very quickly as they run quite warm and tumble constantly to add air to the mix.

for speed putting everything through a shredder before composting helps a lot even with a old style heap.

Slim



Joined: 05 Mar 2006
Posts: 4538
Location: New England (In the US of A)
PostPosted: Wed Mar 01, 17 11:58 am    Post subject: Reply with quote    

If you're looking for speed and automation, you may do better to pursue an "aerated static pile"

Basically, shove a perforated pipe under or through a compost pile, hook a blower and watch it go. Hook the blower up to a solar panel for maximum green

dpack



Joined: 02 Jul 2005
Posts: 32779
Location: yes
PostPosted: Wed Mar 01, 17 1:15 pm    Post subject: Reply with quote    

a pooter fan ,panel and basic control gear to match voltage to fan would make that rig cheap and easy

Treacodactyl
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 25697
Location: Jumping on the bandwagon of opportunism
PostPosted: Wed Mar 01, 17 7:19 pm    Post subject: Reply with quote    

Slim wrote:
If you're looking for speed and automation, you may do better to pursue an "aerated static pile"

Basically, shove a perforated pipe under or through a compost pile, hook a blower and watch it go. Hook the blower up to a solar panel for maximum green


Speed yes, and not having to get a fork out to turn a pile everyday. No desire whatsoever to start having electric gadgets involved.

We've looked at a few videos of the smaller tumblers and they seem far too small. Larger tumblers are far too expensive so I might have to go back to getting the fork out everyday.

Mistress Rose



Joined: 21 Jul 2011
Posts: 8613

PostPosted: Thu Mar 02, 17 7:02 am    Post subject: Reply with quote    

Could you make your own using an old oil barrel?

NorthernMonkeyGirl



Joined: 10 Apr 2011
Posts: 4233
Location: Peeping over your shoulder
PostPosted: Thu Mar 02, 17 3:21 pm    Post subject: Reply with quote    

From various reviews, the general consensus seemed to be that any load big enough to be worth turning was too heavy to turn
That may depend on exactly how sturdy the tumbler is and how much leverage you get. The infrastructure also takes up a lot of room.

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