Mark,
I am not good at estimating price points, and the number of variations
(feeder rollers, flywheel, thickness of sticks) are so numerous that to
say a price without specifying all the rest might not be very
realistic. So, as a NON-engineer, I request assistance from other
readers about price vs features.
Even if I purchased one for where I live (Illinois, USA), my usage would
be limited, and not related to amounts like tons. And to export from
Mexico to Africa would be in the same league as importing cutters from
India, meaning: difficult.
I would like to know what could be accomplished at different price
points. Is that a reasonable place to start? (I hope others will
comment. And maybe something can be accomplished.)
Mark, where are you in Mexico, and when did you move there? Greetings to
your wife.
Paul
Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: [email protected]
Skype: paultlud Phone: +1-309-452-7072
Website: www.drtlud.com
On 1/4/2014 2:23 AM, Mark Ludlow wrote:
Hi Paul,
It would be useful if you could state a price point that would make
equipment like this realistic. The machine Rolf describes is typical,
but I appreciate the fact that limbs and trunks are fed at an angle.
Shearing at an angle reduces the shear force required and thus
increases the output per unit of power input. I could build a
no-frills (except for safety systems) chipper like the one Rolf
describes, here in México, at cost, if you are interested. México is
the productivity-adjusted, lowest-cost producer in the world, as of
2014. Yet many are unemployed.
If you tell me some number, say $/MT of green input, this gives us a
target to design against. I think that energy-storage (flywheel) to
accommodate impulse loading may work, but the amount of energy
required is easily calculated and is reflected in the nominal
hourly-input rating.
I will support development costs (as a non-profit) if you will tell me
there is a market for XXX Machines at XXX Cost on the horizon.
Buen Viajo en Africa!
Mark
*From:*[email protected] [mailto:[email protected]] *On
Behalf Of *Paul Anderson
*Sent:* Friday, January 03, 2014 11:29 PM
*To:* energiesnaturals; Discussion of biomass cooking stoves; Bob
Fairchild; Ron Vanetten; [email protected]
*Subject:* [biochar] Re: [Stoves] Chaff cutters and wood choppers
Rolf, Crispin and all,
Very good reports.
It would be very nice to have a summary of the manufacturers and
models (with price and cutting attributes).
ASSUMING that some one or a few of these devices (and not toooo
expensive) can do the stick and small branch cutting, we need to get
some of them into action in places where we can use the fuel for the
stoves.
Any assistance to accomplish this would be appreciated.
Paul
Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email:[email protected] <mailto:[email protected]>
Skype: paultlud Phone: +1-309-452-7072
Website:www.drtlud.com <http://www.drtlud.com>
On 1/3/2014 1:19 AM, energiesnaturals wrote:
The Jensen Buschhacker is a kind of disc chopper wth only 1 blade
sopported in front of the actual disc and thus free to let up to
12 cm enter the space between fixed counter knife and the rotating
blade. The wood enters horizontally, but at that 30 or so angle to
the disc's plane. The cutting length is given by the speed of the
advance rollers/cylinders vs. the rotational speed of the disc as
usual.
These devices are no toys, the biggest of them cut nearly 20 cm of
oak branches!
My 60 y.o.Buschhacker munches through 15 cm of softwood and 12 cm
of extremely hard dry GREENOAK (quercus ilex) and wild olive. And
this is the middle model of 3.
Of course you wouldnn't want to lift these branches high up to
insert them into a garden chipper type, thus the horizontal
cutting angle.There must be a series of photos on the bioenergy
list somewhere, but i cannot find it from where i am right now.
Rolf
Enviado desde Samsung tablet
CPP GMail <[email protected]>
<mailto:[email protected]> escribió:
When the blade impacts the wood/branches are they pointed
downwards? That would tend to pull the feedstock in as well as
provide the bevel cutting effect.
Thanks
Crispin
------------------------------------------------------------------------
*From:* "energiesnaturals" <[email protected]>
<mailto:[email protected]>
*To:* "[email protected]"
<mailto:[email protected]>
<[email protected]>
<mailto:[email protected]>
*Sent:* 3 January, 2014 12:54 AM
*Subject:* Re: [Stoves] Chaff cutters and wood choppers
Nail trimmers indeed, but only if you intend it.I have worked with
them time ago and as long as you put the alfalfa/hay/straw right
on the conveyor chain and let the advance cylinder in front of the
cutting wheel do it's job, there is not much danger to get caught...
Btw, they still build them in Spain as i inquired for Christa some
month ago.
The same principle applies to the Jensen Buschhacker i described
earlier.
Not only has it 35deg angle between advance rollers and disc
plane, but the blade position in the disc cuts much like you would
cut through aloaf of bread with a knife.
This enables the Jensen to perform very well with only 12-15 hp
tractors on the pto.
My Laimet Hp 21 also saves energy cutting, but we strongly miss
the advance rollers.
We are actually busy implementing them together with a pickup
system for prunings and forest slash for the Laimet and two modern
Jensens.
Guess for what!
Rolf
Enviado desde Samsung tablet
[email protected] <mailto:[email protected]> escribió:
The one at the link above is really advanced
when it comes to safety which is good
because this sort of machine was responsible for more lost fingers
than any other piece of farm equipment.
Impressive piece of machinery and EXACTLY my immediate reaction---
Nail
trimmer extreme!!!
M Trevor
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