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  • From: George Anna Clark <esac@laneta.apc.org>
  • To: permaculture <permaculture@lists.ibiblio.org>
  • Subject: Re: [permaculture] chippers
  • Date: Sun, 29 Aug 2004 08:05:46 -0500

Just to add that friends with a composting center in south central Mexico employ an 18 hp chipper which costs about $4500 US for heavy duty (can be 4-5 hours daily) chipping of up to 4-5 cm wood limbs. (anything bigger they sell for firewood or posts). This is from a local company that produces its own machinery.

If you want to go expensive, the Italian equipment for shredders (and rotary tillers as well) have a very good reputation.

In these parts, shredders are used a lot for forrage sorghum, and are supposedly good for chipping as well but they don't last at all. I hope to start processing smaller branches (leaceanea and glyricidia sepium, among others) in a chipper, my friends say 12hp will do.

Good luck,
George Anna


At 09:33 a.m. 30/07/2004, you wrote:
Scott, do you have any old copies of the Permaculture International journal sitting around? There was a company that advertised in there that sold various types of chippers that hooked up to your PTO shaft.
Seems like that would be the simplest way to employ biodiesel in chipping - with a diesel tractor, if you actually have one. Seems like even developing countries they aren't uncommon. Of course, you wouldn't need to do any conversions of your tractor or the chipper if you were to use biodiesel - but you would need to convert your waste vegetable oil (WVO) into a methyl ester, using relatively expensive and scary chemicals. Or you could modify the fuel system of your tractor so that after starting it on diesel or biodiesel you could run it on WVO. Here is a cool guy in Minnesota who sells some cheap plans for building components that will let you run WVO in an older style Indirect Injection Diesel: http://danalinscott.netfirms.com/ . The plans are like, under $50 for everything you will need, and even if you use all new parts to build his conversion you can make one for two or three hundred dollars - about half what you would pay for a "commercial" kit. Of course, you can scrounge recycled parts and make it all a lot cheaper.
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  • Re: [permaculture] chippers, George Anna Clark, 08/29/2004

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