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Elmia Wood 2009 - Forestry Journal

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<strong>Elmia</strong> is the biggest forestry show on Earth,<br />

and it took place in Sweden from 3-6 June.<br />

This event, held, as ever, near Jönköping, is huge, and you really do have<br />

to be there on all four days if you are going to get round the whole show.<br />

The number of exhibitors was slightly down on the 2005 show (by around<br />

40) but over 46,000 ‘unique’ visitors passed through the gates over the four<br />

days, and the atmosphere, as always, was buzzing.<br />

‘<strong>Elmia</strong> weather’ in the past was a phrase synonymous with baking hot<br />

sunshine, but this time, despite the sun breaking through on a fairly regular<br />

basis, the weather conspired to inflict chill temperatures, wind and occasional<br />

heavy rain on proceedings. “Summer sun and winter wind,” as Mark<br />

Osborne of AT Osborne succinctly put it. At night the temperature fell to<br />

freezing point.<br />

There were many British faces to be seen, both dealers and end users, and<br />

a lot of them were welcomed at <strong>Forestry</strong> <strong>Journal</strong>’s stand. Some of them we<br />

hadn’t seen for a number of years, but that is one of the pleasures of a major<br />

gathering such as <strong>Elmia</strong>. Komatsu Forest made the biggest contribution in<br />

this area, bringing over some 70 contractors.<br />

On the machinery side, many manufacturers ensured they had something<br />

exciting and new to show off – most notably Valmet and Rottne – and we<br />

were able to catch up with developments on a number of new concepts that<br />

saw the light of day at previous shows.<br />

<strong>Elmia</strong> <strong>Wood</strong> will return on 5-8 June 2013, but before then <strong>Elmia</strong> will host<br />

its Swedish forestry fair, Skogs<strong>Elmia</strong>, from 26-28 May 2011.<br />

<strong>Elmia</strong><br />

The Lightlogg from Timbear<br />

In 1997 Jan Eriksson sold Skogsjan to Caterpillar. He continued<br />

to work with them for nearly six years, and says he was sorry<br />

when they finally sold out. “I liked them. They were a strong<br />

and fair company.”<br />

One of the conditions of his sale of Skogsjan was that he<br />

was not allowed to take up other employment in forestry for a<br />

number of years. However, an inventive mind like that of Jan<br />

Eriksson cannot be still indefinitely, and in 2002 he started testing<br />

out some new ideas. The result is the Lightlogg.<br />

The aim is to produce a machine that can operate on soft<br />

ground without damaging it, and which is narrow enough to<br />

manoeuvre through the stand without difficulty.<br />

Having two load bunks to distribute the load lightens the<br />

ground pressure and reduces the width of the machine to 2.2<br />

metres. To lower the ground pressure still further, the machine<br />

is mounted on tracks, rather like an excavator, each driven by a<br />

hydrostatic wheel motor. As well as being very environmentally<br />

friendly, the result makes for a cheaper solution, according to<br />

Jan Eriksson.<br />

Despite its double articulation, the machine can steer in both<br />

directions. The rear bunk can be brought 2 metres closer to the<br />

crane for ease of loading.<br />

And it doesn’t end there. The Lightlogg is a combination<br />

machine, and in 20 minutes can be converted into a harvester<br />

carrying a 400kg head with a 35cm cut.<br />

Timbear 0046 670 10666<br />

www.timbear.se<br />

The Lightlogg spreads the weight with two<br />

load areas and tracks. (Right) Its inventor,<br />

former Skogsjan owner Jan Eriksson.<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09 www.forestryjournal.co.uk<br />

23


John Deere<br />

The John Deere 1910E forwarder has a 9 litre engine and a CF8 loader.<br />

John Deere <strong>Forestry</strong> had its complete E series on display for the first time,<br />

including the 810E, 1010E and 1910E forwarders.<br />

They also introduced TimberLink F software which enables forwarder<br />

operators to monitor and optimise machine performance.<br />

Taking a leaf out of Volvo’s book, Deere are developing a hybrid drive<br />

train. Instead of powering the axles through a torque converter, this uses a<br />

smaller than normal diesel engine which drives a generator, then a motor<br />

followed by a two-speed gearbox. A traditional mechanical transmission is<br />

eliminated, because the variable speed electric motor takes the function of<br />

a continuously variable transmission. Despite a reduction in diesel engine<br />

power, the system is fully capable of accomplishing the same work as a<br />

conventional drive train. Additionally, it can recover brake energy and provide<br />

power boost for peak load situations. Depending on the application,<br />

electrification can enhance fuel efficiency by 15-25%.<br />

John Deere <strong>Forestry</strong> 0870 224 3745<br />

www.e-series.fi<br />

Stepless HSM<br />

HSM were showing off their 805F forwarder that can be converted, by<br />

means of a quick change system, into a clambunk. The machine is also<br />

equipped with a double drum Adler winch with two times 8 tonnes pulling<br />

capacity. New is the Mercedes 174hp/129kW OM904LA engine replacing<br />

the 141hp Iveco.<br />

Of special interest was the machine’s ICVD (Integrated Continuously<br />

Variable Drive), a system developed by Walterscheid GKN. There was a<br />

cutaway version of this on the stand to show how it works. It is based on<br />

the bent axis 45° technology which was first introduced into the market<br />

with the Fendt Vario transmission. This system was made exclusively for<br />

Fendt by Sauer Danfoss for 10 years, but has been openly available for the<br />

last three years.<br />

It makes it possible to drive faster without diminishing tractive force,<br />

and to accelerate through the entire speed range without interrupting the<br />

drive.<br />

Forest Technical Ltd 07814 393810<br />

http://hsm-forstmaschinen.de<br />

The modus operandi of the<br />

Beast. It is operated remotely<br />

from the cabs of two or more<br />

forwarders, each forwarder<br />

taking over control when the<br />

other(s) are travelling and<br />

unloading.<br />

The Beast turns green<br />

At the last <strong>Elmia</strong> <strong>Wood</strong> we were introduced to the Beast and its messengers.<br />

This unmanned harvester, operated from the forwarders which it<br />

loaded direct from its felling head, was on the Rottne stand, and sported<br />

a Rottne head.<br />

The concept has now been taken over by Gremo, who will continue<br />

developing it in cooperation with Swedish forestry collective and management<br />

company Södra, who have bought a Beast.<br />

The system brings a number of advantages over the conventional<br />

approach. Trees are logged directly onto the revolving load bays of the<br />

forwarders, saving double handling, and, with no harvester driver, there<br />

is a saving in labour.<br />

Gremo are also developing a version of the Beast that is suited to stump<br />

harvesting.<br />

Gremo 0046 346 60515 – www.gremo.com<br />

24<br />

www.forestryjournal.co.uk<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09


Ponsse’s new 8-wheel thinning harvester, the Fox.<br />

Ponsse<br />

Ponsse had their new, 8-wheel thinning harvester on display, the Fox.<br />

With a width of 2.64 to 2.84 metres, depending on tyre size, it is fitted<br />

with new type of crane, the C22, which has a reach of 11 metres. This<br />

has been moved nearer the cab than on other models, which, Ponsse<br />

say, gives better visibility and optimal weight distribution. It is powered<br />

by a 197hp, four-cylinder Mercedes-Benz engine. The harvester weighs<br />

18 tonnes and carries an H53e head.<br />

Ponsse’s well proven Ergo harvester is also now available in an eightwheel<br />

version, which also has a 12% increase in tractive force.<br />

Ponsse have also produced a new medium-sized, general purpose<br />

harvester head, the H6. With three feed rollers and two fixed plus four<br />

movable knives, it has a felling diameter of 640mm and can be used on<br />

thinnings and clearfells. Weight is just over a tonne. The H6 can also be<br />

equipped with the multi-stemming feature, which makes harvesting of<br />

small timber faster. This feature is now also available on Ponsse’s H53e<br />

and H7 heads and is aimed principally at energy wood harvesting.<br />

Ponsse 01576 203000<br />

www.ponsse.com<br />

Valmet<br />

Valmet had a wide array of new products to show off on their stand –<br />

two new harvesters, a new forwarder and three new heads.<br />

We got a sneak preview of the two harvesters in the June edition.<br />

The 931 weighs just under 20 tonnes and has a 9.4 litre, 6-cylinder<br />

commonrail engine. The CRH22 crane is available in two lengths – 8.5<br />

metres (for use with the 370.2 head) and 9.8 metres (for use with 360.2<br />

and 365 heads).<br />

The 901TX (‘Thinning Xpert’) is a 17 tonne harvester with two crane<br />

options, the 10 metre CHR16, for use with the 350.1 head, and the 11<br />

metre CRH16DT. Gross lifting torque is particularly high at 170 kNm.<br />

Both new harvesters are fitted with Valmet Comfort bogies and come<br />

with the latest 1.4 version of the MaxiXplorer control system.<br />

To work alongside the 901TX, Valmet have introduced the 840TX<br />

8-wheel forwarder. Designed for agility in thinnings, it has a short<br />

rear frame and nose, giving it an overall length of 9.02 metres, as<br />

against 9.57 metres for a standard 840.4. Weight is also less, by 800kg,<br />

although carrying capacity remains unchanged at 12 tonnes.<br />

The 365 is a new harvester head with a delimbing diameter of<br />

470mm. With three feed rollers, it has four fixed and one movable<br />

knife, and a new, patented measuring system. It takes its place in the<br />

Valmet head line-up along with the new 378, which is designed for use<br />

on excavators of 20 tons or more. It will delimb up to 500mm.<br />

Finally Valmet have introduced the world’s first fully rotating head,<br />

the 370E, which is able to go round and round without breaking the<br />

hoses. It is designed principally for use with tracked feller bunchers and<br />

excavators. Komatsu Forest 01228 792018<br />

www.komatsuforest.com<br />

<strong>Elmia</strong><br />

Whole trees to pellets<br />

The Peterson 5900 whole tree chipper caused<br />

quite a stir in the biomass area. According to the<br />

American manufacturer, it produces chips as small<br />

as 6mm in length. This is the ideal raw material for<br />

pellet plants and the pulp industry. A complete<br />

system incorporating the 4800 debarker was on<br />

show. The chipper takes stems up to 56cm in<br />

diameter.<br />

The standard version, with a 168mm disk and<br />

three knives, produces chips between 16 and<br />

32mm in length. A four knife version is available<br />

with two disk diameters. Production capacity<br />

ranges from 55 to 90 tonnes an hour, depending<br />

on the type of timber, its diameter and the<br />

required chip length.<br />

The 5900 is powered by a 765hp Cat diesel<br />

engine and weighs just under 20 tonnes.<br />

Peterson 001 541 689 6520<br />

http://petersonpacific.com<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09 www.forestryjournal.co.uk<br />

25


Tigercat 1075B with extendable bunks and a very large load.<br />

Tigercat<br />

Tigercat displayed harvesting and biomass systems as well as a skidder<br />

and forwarder based scarifiers at <strong>Elmia</strong> <strong>Wood</strong><br />

Tigercat are known in the UK for their tracked harvesters, and their<br />

LH845C track-based levelling harvester attracted much attention, not<br />

from Swedish visitors, where operations are almost exclusively cut-tolength,<br />

but from UK, German, Russian and Norwegian customers where<br />

the negotiation of steep slopes is an everyday event.<br />

The stand also featured the narrow (1.9m on 400/55x22.5 tyres),<br />

eight-wheel drive H09 harvester, which Tigercat say is popular throughout<br />

Sweden, and there was also a 1075B forwarder with extended bunks,<br />

stacked with a very impressive load. The 20-tonne rated machine has<br />

wide bogie axles, a massive centre joint, a new cab and new MD3 control<br />

display.<br />

Tigercat also demonstrated a 1055B 14-tonne forwarder which was put<br />

through its paces over the four days. There was also an additional 1055B<br />

equipped with a Bruks mobile chipper mounted on it.<br />

There were also machines for mechanised site preparation and planting.<br />

The Tigercat 635D with the its Turnaround seat has gained favour in<br />

Swedish scarifying applications as a rugged, low cost carrier compared<br />

with a traditional forwarder. Various types of site preparation implements<br />

can be mounted onto the six-wheel drive, hydrostatically driven carrier.<br />

Tigercat also put a 1075 forwarder with a large four row Bracke scarifier<br />

on the Bracke stand.<br />

Treetop <strong>Forestry</strong> 07768 613036 – www.tigercat.com<br />

Volvo<br />

Volvo’s aim is to be a ‘total solutions provider’ covering many segments,<br />

including forestry, according to Jukka Moisander, Volvo’s<br />

Director of Global <strong>Forestry</strong> Solutions.<br />

When briefing journalists he noted that tree length harvesting<br />

still accounts for two thirds of the volume cut around the world,<br />

with cut-to-length accounting for the other third, though its share is<br />

growing.<br />

But Volvo’s target is to cover everything, including harvesting,<br />

transport to the mill, handling at the mill, and replanting. And on<br />

top of that you can add bioenergy harvesting, including stumps, and<br />

road maintenance.<br />

At present the only harvesters in the Volvo range run on tracks.<br />

There are four of them, ranging from 21 to 33 tonnes in weight, two<br />

of them fitted with Volvo’s LevelMax system. Other features include<br />

a gull-wing hood design – strong enough to withstand a tree falling<br />

on it.<br />

“But we need a forwarder in our product offering,” continued<br />

Jukka Moisander. With this in mind, Volvo has bought up the rights<br />

to the El-Forest diesel-electric 15 tonne forwarder which was first<br />

glimpsed at the previous <strong>Elmia</strong> <strong>Wood</strong> in 2005. This is powered by a<br />

small (80hp) diesel engine which drives a generator which charges<br />

14 12-volt batteries. With two of these used to power engine start-up<br />

and lights, the remaining 12 drive AC motors in each of the six wheels<br />

of the forwarder. Each of these has an output of 30kW, giving a possible<br />

tractive force of 294kN, though in practice this has been tuned<br />

down to around 200kN since that is all that is really needed.<br />

The speed of each wheel is individually controlled, and the sixwheel<br />

design is such that the wheels follow the same track. The<br />

El-Forest has half the turning radius of a conventional forwarder, and<br />

the machine’s design, and the fact that the air conditioning unit is<br />

housed outside the continuously rotating cab, mean the noise level is<br />

exceptionally low.<br />

The pendulum axle at the front gives side levelling, and the absence<br />

of traditional bogie axles make the machine lighter than a traditional<br />

forwarder. In principle it is a fifteen tonner with a 1:1 carrying capacity,<br />

although the design could be simply scaled up in size.<br />

The El-Forest is at the pre-series stage at the moment, and should<br />

go into full serial production in 2010. Volvo 01223 836636<br />

www.volvo.com – www.el-forest.se<br />

(Above) Volvo’s hybrid drive F15 forwarder. (Below) It’s electric, and the lack of<br />

conventional bogies, each wheel being driven by its own electric motor, makes<br />

the El-Forest lighter than a normal machine of similar capacity.<br />

26<br />

www.forestryjournal.co.uk<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09


Logset<br />

Shaun Harper of Logset Ltd and Pasi Nieminen, Sales Director<br />

of Oy Logset Ab, with the 5L head which is now capable of<br />

efficient multi-stem handling.<br />

The emphasis on the Logset stand was on fuel economy. Agco Sisu Power has developed<br />

customised engine software for Logset to meet the demands of forest machines.<br />

The software, together with Logset’s TOC (Total Operator Control) system, optimises<br />

fuel injection in accordance with the prevailing load and the required level of hydraulic<br />

pressure and oil flow. The engine responds to changing conditions quickly to balance<br />

power, torque and engine revs.<br />

On display on the stand were testimonies from various contractors, including a<br />

couple from Britain, as to the effectiveness of the system. Ron Drennan was quoted as<br />

saying, “My machine is very reliable and easy to run. Fuel consumption is very good.<br />

The machine is very stable and comfortable to operate.” He has apparently been using<br />

9 litres an hour on his 8F forwarder, which weighs 17 tonnes and has a load capacity<br />

of 15 tonnes.<br />

Des Pickard, who was pictured beside his 8H harvester, simply said: “I am absolutely<br />

delighted with the low fuel consumption.” The figure quoted was 0.7 litres per tonne<br />

harvested.<br />

Oy Logset Ab is part of the giant Pilomac Group, which had a turnover of some<br />

e100 million last year.<br />

Logset Ltd 01228 792500<br />

www.logset.com<br />

Throw Saw<br />

The throw saw consists of a 45 metre line with a length of saw chain in the middle. The line is<br />

supplied with a throw bag to enable the line to be thrown over high branches. Once the saw<br />

chain is positioned over the part of the tree that is to be cut, work can commence, two people<br />

pulling the saw chain backwards and forwards until the tree is cut. A weight on the chain keeps<br />

it the right way up so that the teeth locate correctly into the cut.<br />

Although it is very low-tech, the throw saw does have one big advantage over chainsaws: it is<br />

able to cut through timber that is under pressure. This occurs, for instance, if a stem is not lying<br />

completely on the ground, but has its weight supported at either end and not in the middle.<br />

(For instance, this would be the case if, in the picture shown, the cut were being made to the<br />

left of the trestle support.)<br />

When this is the case, as long as the diameter of the timber is greater than 4 to 6 inches, the<br />

throw saw will cut through it from the top without difficulty. A chainsaw, on the other hand, with<br />

its wide bar, will get stuck as the cut closes together under gravity.<br />

The line that holds the throw saw is certified for working under electrical lines.<br />

Throw Saw 0046 733 926105<br />

www.throw-saw.com<br />

Reinventing the grapple<br />

Notice something odd about the grapple in the picture Hultdins have<br />

broken with tradition and come up with a new design which, they say,<br />

gives faster loading and unloading of logs.<br />

It all began with problems using a grapple saw to handle and cut brash<br />

for biofuel. Because brash invariably lies strewn in a chaotic fashion, the<br />

grapple saw was finding it hard to pick up cleanly. A long serving member<br />

of Hultdins’ staff suggested a solution – a grapple with modified jaws.<br />

Although it seemed something of a long shot, the company decided to<br />

make one anyway and see if it worked.<br />

It did. The brash now formed into a well aligned sausage shape in the<br />

grapple. However, the unexpected bonus was that the new grapple also<br />

performed much better on logs as well. Initial studies made by Swedish<br />

research institute Skogforsk indicate that forwarder loading is 4-5% faster<br />

and unloading 7-8% faster with the ‘A-Grapple’, as it is known, compared<br />

to a standard grapple. Its asymmetrical shape makes it easier to pick up<br />

single logs and to organise the log pile. It also simplifies work in hilly terrain<br />

and the picking up of leaning logs.<br />

The arms of the A-Grapple improve the way the logs roll into the grapple.<br />

With conventional jaws there is always a risk that a piece of wood gets<br />

clamped between them, obstructing the closing motion of the grapple.<br />

The angled ends on the A-Grapple feed everything that the tips can grab<br />

into the grapple, and the rest is fed out. Nothing can get stuck between<br />

the grapple arms and the closing motion of the grapple is unimpeded.<br />

The tips of<br />

the A-Grapple<br />

have minimal<br />

contact<br />

surface to<br />

the ground,<br />

so bringing<br />

much less dirt<br />

and sand with<br />

them than<br />

on a normal<br />

grapple.<br />

And, of<br />

course, when<br />

working on<br />

brash, since<br />

the arms feed<br />

it either into<br />

or out of the<br />

grapple, the<br />

branches are well aligned with every grab. The density of the load is<br />

increased and brash piles become better organised.<br />

Hultdins 0046 953 41800 – www.hultdins.se<br />

Vielen Dank Dieter Biernath!<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09 www.forestryjournal.co.uk<br />

27


No more chain oil on harvesters<br />

In future, chain oil could be no longer necessary in harvester heads.<br />

Instead lubrication could be carried out using grease.<br />

This brings many advantages. Consumption can be reduced by a<br />

factor of 12 – ie 12 times more chain oil than grease is needed to do<br />

the same job. On top of this, the chain and bar are expected to last<br />

much longer. This all adds up to less pollution and a great reduction in<br />

operating costs.<br />

These are the claims of Canadian company STL Lubrifiants for their<br />

Envirosys system, which they say works with all harvesting heads. Their<br />

figures – namely that 2kg of grease is equivalent to 24 litres of oil –<br />

have been verified by Feric (The Forest Engineering Research Institute<br />

of Canada) in both summer and winter conditions over a period of 12<br />

months.<br />

Grease is supplied on demand according to what has been programmed<br />

into the system’s electrical control unit. The reason for such<br />

a marked improvement in performance is down to grease’s properties<br />

compared to those of oil. Grease has better consistency, adhesiveness<br />

and film strength. 80% of chain oil either evaporates or is flung off.<br />

The biodegradable grease used in the system is supplied in accordion-type<br />

cartridges which can be replaced in a few seconds. There is no<br />

need to go near the head to replenish the reservoir. Instead the reservoir<br />

and pump are installed near the operator’s cabin. Experience in Sweden<br />

has shown that one cartridge will last about a week.<br />

STL Lubrifiants 001 418 275 5282 – www.envirosysforest.com<br />

Mini harvester<br />

Vimek is expanding. In 2004 its turnover was e2 million. Last year this<br />

had risen to e5.5 million. And the product range has been expanding<br />

too. Well known for its mini forwarder, the company has now added a<br />

mini harvester, the 404 T3, to its range.<br />

Development began in 2004/5. The machine had no harvester head,<br />

instead using a shear for early thinnings. Clearing trees under power<br />

lines had been the idea, but no market could be found for the machine.<br />

The machine was therefore redesigned, and the 404 T was the result.<br />

This stayed in production until very recently, with the upgraded T3<br />

now taking over. This carries a Keto head, designed in a collaboration<br />

between the two companies. The head has a new type of tilt frame, a<br />

conventional rotator, and a new, patent pending swing damper.<br />

The new harvester has also meant that Vimek have had to design<br />

a new forwarder, since its well proven 606, which was developed in<br />

1992, is not able to keep up with it. The 606 will remain in production,<br />

but, at 4.5 tonnes, the new 608’s load capacity is 50% higher than its<br />

predecessor’s. The 608 has a new trailer and a longer crane, but is only<br />

10cm wider overall. A swing damper has been added as an option as<br />

well as a tilt grapple to assist loading in thinnings.<br />

Vimek have also produced the BioCombi, a forwarder with a felling<br />

grapple that cuts stems up to 16cm with a shear. It is intended for use<br />

gathering biofuel material. The machine is equipped with a weighing<br />

scale and can apply stump treatment. Vimek 0046 933 71075<br />

www.vimek.se<br />

Instant firewood<br />

Nokka’s Klapimoto turns trees into firewood, cutting out all the stages in<br />

between. Of course, the wood still needs to be seasoned, but Nokka offer<br />

a trailer with removable containers into which the freshly cut wood is<br />

dropped. All that remains is to put these somewhere dry, and wait.<br />

The Klapimoto 23 is basically a light stroke harvesting head which<br />

forces stems up to 23cm in diameter through a splitting knife, using a<br />

guillotine to cut them into lengths from 20 to 52cm. Delimbing diameter<br />

is 6 to 23cm and delimbing/splitting force is 3.4 tonnes.<br />

Oil requirement is 30 to 60 lpm at 175 bar, and the maximum stroke<br />

length is 75cm. All functions are operated by the loader’s control valve<br />

block and via a touchscreen and pre-select electrical control box.<br />

Nokka 00358 14 3301 500 – http://nokka.fi<br />

28<br />

www.forestryjournal.co.uk<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09


Chain brushcutter<br />

Quantifying chip<br />

Austrian chipper manufacturer Mus-Max had a scanner on the<br />

elevator of their Terminator 10 chipper. The technology is borrowed<br />

from sawmilling and is used to quantify the production<br />

of the machine. Using this approach it is possible to work out<br />

the volume of chip produced within a margin of error of 1%.<br />

The Terminator 10 has a 700hp engine and can produce<br />

300 cubic metres of chips an hour.<br />

Also on display was the T9 XL for tractors of 200 to 300hp.<br />

This has an infeed of 70cm high by 82cm wide.<br />

Eurogreen 01903 700678 – www.mus-max.at<br />

Bengt-Åke Alriksson spends<br />

a lot of his time wielding a<br />

brushcutter.<br />

Like many charged with this<br />

task, he found himself thinking,<br />

“There must be an easier way.”<br />

And he set about redesigning<br />

the brushcutter to make the<br />

work easier, more comfortable,<br />

and more accurate.<br />

Gone is the circular cutter,<br />

replaced by a small chainsaw.<br />

This alone brings many benefits<br />

– it can be manoeuvred<br />

with greater precision, and,<br />

as it finishes cutting through<br />

a stem, it does not accelerate and move suddenly into the next one, or into a<br />

stone.<br />

Another change to the design is that the control handles have been eliminated,<br />

making the brushcutter easier to lift and carry through dense undergrowth.<br />

It is quite common in Sweden to use a brushcutter to clear regenerated birch<br />

or Scots pine. “The new design means I can use it as a weapon,” said Bengt-Åke<br />

Alriksson. He used to be a long distance canoeist, and studied the ergonomics<br />

of brushcutting, differentiating between static and dynamic muscle work. The<br />

brushcutter’s engine is held on a harness behind the user with the weight supported<br />

by the hips. Tension in the shoulders is eliminated, and the user can relax,<br />

even though, at 13kg, the brushcutter is slightly heavier than normal. The weight<br />

is well distributed, and extensive studies have shown that the user’s pulse rate is<br />

10% lower than that of someone using a conventional brushcutter. Work is assisted<br />

by the machine’s longer reach, meaning the user can stand on good ground and<br />

save a lot of steps.<br />

Bengt-Åke Alriksson finds it easy to work all day long with the brushcutter. “You<br />

shouldn’t need to be an athlete to do a day’s work,” he says. “Amateurs and pensioners<br />

can do this too.”<br />

Readers with long memories may remember reading about this machine, then<br />

at the development stage, in FMJ’s Skogs<strong>Elmia</strong> roundup of two years ago. At the<br />

time it was anticipated that the chain brushcutter would be in stores at the end of<br />

2008. This date has now been revised to the first quarter of next year, with production<br />

commencing this autumn. Husqvarna 01453 820300<br />

Silly outfits<br />

One way to get noticed at a huge event like <strong>Elmia</strong><br />

is to make an exhibition of yourself, and that is<br />

just what the girls from Svenska Skogsplantor,<br />

and the boys from MES-Smide did.<br />

Svenska Skogsplantor were running a quiz<br />

with the chance to win 1000 seedlings. Based in<br />

Hallsberg, they are one of the largest European<br />

companies specialising in seeds, bare root<br />

and container seedlings, and afforestation. As<br />

you can see, they offer healthy, happy young<br />

plants.<br />

MES-Smide is a small scale operation making<br />

bandtracks, and they had travelled 1000<br />

kilometres south from Bredbyn to be at the<br />

show, where they wore the same outfits as the<br />

womenfolk on their stand. “It is a kilt!” we were<br />

told, as if that explained everything. There is no<br />

tradition of kilt wearing in Sweden, as far as we<br />

can make out, but maybe we haven’t looked in<br />

the right places.<br />

MES specialises in smaller bandtracks, the<br />

market for larger ones being largely saturated.<br />

www.skogsplantor.se<br />

http://messmide.se<br />

The girls from Svenska Skogsplantor (left) and the boys<br />

from Markus Edlunds Svets och Smide (Markus Edlund’s<br />

Welding and Forging).<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09 www.forestryjournal.co.uk<br />

29


Green Gator Eyes<br />

Bright future<br />

for LED lights<br />

Hella were showing off their LED<br />

(light emitting diode) lights, which<br />

they anticipate being used as work<br />

lights on harvesters and forwarders.<br />

They are also finding their way onto<br />

cars – for instance they are already<br />

available as brake lights on the VW<br />

Tiguan.<br />

LED lights have many advantages<br />

over conventional lights: they use<br />

50% less energy, are robust, and have<br />

a life span up to 130 times greater<br />

than a halogen bulb.<br />

So, you want to measure the diameter of that tree<br />

over there, just the other side of the stream. Or<br />

perhaps you’d like to know its diameter 20 feet up,<br />

but no way are you climbing all the way up there<br />

to find out.<br />

The answer’s simple with Gator Eyes, the laser<br />

add-on for calipers from Haglöf, and, to make things<br />

even easier, if it’s a digital Haglöf caliper you are<br />

using, the result can be recorded at the touch of a<br />

button.<br />

This isn’t entirely new technology, but the eyes<br />

are now available in green. There was a problem<br />

using the red Gator Eyes on a sunny day, but the<br />

green eyes are 50 times brighter, and so remain visible<br />

in areas of bright light.<br />

Sorbus International 01373 475540<br />

www.sorbus-intl.co.uk<br />

(Above) The<br />

SSP 520 in<br />

action. (Far<br />

left) A change<br />

in length of<br />

the cut billets<br />

could not be<br />

easier – just<br />

move the pin.<br />

(Left) The<br />

saw, more<br />

usual in a<br />

harvester<br />

head.<br />

Binderberger<br />

Binderberger have produced a<br />

bigger version of their firewood<br />

processor for use on large timber.<br />

The SSP 520 has a 20 tonne<br />

splitting force, and will take logs<br />

52cm in diameter. It weighs 4<br />

tonnes.<br />

Its 50hp German made Hatz<br />

diesel engine uses 4 litres of fuel<br />

an hour – half what a pto tractor<br />

would consume if performing<br />

the same task, according to<br />

Binderberger.<br />

The processor uses a harvester<br />

head style saw unit with<br />

automatic chain tensioning and<br />

lubrication – the first time this<br />

has been done on a firewood<br />

processor.<br />

When used in fully automatic<br />

mode, the machine can be operated<br />

by just one person.<br />

Although brand new, 20<br />

examples of the SSP 520 have<br />

been sold already, close to<br />

Binderberger’s factory in Austria.<br />

1000 of the smaller firewood<br />

processor, the SSP 450, have<br />

been sold over the last 10 years.<br />

Marshall Agricultural Engineering<br />

01892 770788<br />

or 07836 274164<br />

www.marshalllogging.co.uk<br />

30<br />

www.forestryjournal.co.uk<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09


The smaller of the chainsaw winches, the VIK<br />

615, with the side cover removed (below) to<br />

show how the chainsaw attaches.<br />

Chip and shred<br />

Jenz were showing off their new<br />

BA 720 chipper/shredder, which<br />

replaces the AZ 660 in their<br />

line-up.<br />

This is a biomass processor,<br />

with an infeed of 720 by<br />

1500mm. The rotor speed can<br />

be varied, and the operator can<br />

select the optimum speed for the<br />

work in hand. Chipping operations<br />

require a speed of 400rpm,<br />

whilst shredding work needs<br />

1000rpm.<br />

The machine’s ‘Easygreen’<br />

controller monitors the its operation<br />

and also provides service<br />

data, such as operating hours,<br />

fuel consumption and engine<br />

performance. As an option, the<br />

quantity of chip produced can<br />

also be measured.<br />

The machine’s ‘Vario-Flex’<br />

controller makes it easy to select<br />

the optimum rotation speed for<br />

the material being processed,<br />

resulting in fuel consumption as<br />

low as 0.3 litres per cubic metre.<br />

Westcon Eqpt 01258 859100<br />

www.westconuk.co.uk<br />

Able to process everything, including garden waste, bark<br />

and timber, the Jenz BA 720 can operate either as a biomass<br />

chipper or as a shredder by simply changing the speed of the<br />

rotor (below).<br />

Chainsaw winch<br />

Now here’s a handy idea: you can use your<br />

chainsaw to power this winch.<br />

The manufacturer of this item is Austrian<br />

company Interforst – not to be confused with<br />

the German forestry show of the same name.<br />

They make two models, details of which are<br />

below… simply replace your bar and chain with<br />

the winch and start pulling in the timber.<br />

They work with most makes of chainsaw,<br />

making a portable solution that can be carried<br />

easily in both your vehicle and into the forest.<br />

Interforst do not have a British dealer, and if<br />

you go onto their website, clicking the Union<br />

Jack makes no difference to the language – it’s<br />

still all in German. To find the items, put the letters<br />

‘VIK’ in the search (‘Suche’) box.<br />

The winches are not particularly cheap, given<br />

the current level of the pound against the euro:<br />

the VIK 615 costs €1,690 including a Jonsered<br />

or Husqvarna chainsaw but without rope. The<br />

VIK 1000 costs €1,550 without accessories.<br />

Interforst 0043 3577 25700<br />

http://www.interforst.at<br />

Email office@interforst.at<br />

Model VIK 615 VIK 1000<br />

Max. Pull 600kg 1.2 tonnes<br />

Chainsaw Power 2.7 to 4 hp 4 hp<br />

Rope 55m x 4.5mm 80m x 6.5mm<br />

120m x 3mm 120m x 5mm<br />

Weight without saw 17 kg 27 kg<br />

Total weight 27 kg 42 kg<br />

Infeed speed 21 m/min 28 m/min<br />

Rottne<br />

Rottne used <strong>Elmia</strong> <strong>Wood</strong> to present their new F15 forwarder. This will replace the Solid F14. It<br />

has the same payload as its predecessor but higher performance right through.<br />

The Rottne F15, which is an 8-wheel forwarder with 14 ton payload, has more power, a new<br />

generation of hydrostatic components that provide higher traction force and portal bogies to<br />

increase ground clearance. The F15 can be equipped with Rottne’s Comfort Line damping system,<br />

which significantly reduces vibration in the cab.<br />

The F15 also has a stronger wagon and a loader with higher lifting torque, and can be fitted<br />

with an extendable loading space called Wide Load.<br />

Rottne have introduced the F13S, an 8-wheel forwarder with 12 tonne capacity, which will<br />

replace the Solid F12S. The steerable wagon increases the machine’s steering angle from 43<br />

to 54 degrees which makes this medium-sized forwarder as manoeuvrable as a small thinning<br />

forwarder. The wagon bogie tracks the front end making the F13S an ideal forwarder for narrow<br />

roads and dense thinnings.<br />

Finally the Rottne H-10 is a new thinning harvester built to the same concept as Rottne’s larger<br />

harvesters. It has an 11-metre loader and EGS 405 head.<br />

Rottne UK 01556 612233 – www.rottne.com<br />

<strong>Forestry</strong> <strong>Journal</strong> 7/09 www.forestryjournal.co.uk<br />

31

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