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Continuously-Collecting Energy Wood & Fuel Treatment Felling Head

Master of Global Forest Machinery

Co-Funded by the European Union

Research and Development Journey

We have been studying the fuel treatment topic for the last 4 years and as an outcome we have developed a felling head for fuel treatments that meet Canadian requirements.

Continuously collecting felling head

  • A unique felling and continuous collection head.

  • Built for young forests with small-diameter trees and fuel management operations worldwide.

  • The main operation idea is to make selective pre-commercial thinning or first thinning to enable the remaining trees to grow faster and healthier.

  • Designed to produce non-limbed energy wood 2-3 times more efficiently than the existing solutions (single grip biomass grapples/heads).

  • Designed to be mounted on widely available base machines (10+ ton excavators and wheel harvesters).

  • Easy to use, requiring only a few days of training.

Suitability

Stemmaster is optimized for high-density forests where the felled trees are less than 4 inches (10 cm) in diameter but no larger than 6 inches (15 cm), depending on the size of the head.
  • The optimal tree size is 1-3 inches (2-8 cm).

  • The thicker the forest is, the better fit with Stemmaster.

  • To complete the job site, a small-medium size thinning forwarder will follow and pick up the bunches of stems (5-12 tons payload).
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The Challenge

Wildfire prevention thinning is expensive, inefficient, and requires lots of resources.

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Proven Working Principle

Continuously-collecting fuel treatment felling head method is proven and can revolutionize how fuel treatments are done. It will reduce the cost of fuel treatments by 80%.

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Suitability

Current fuel treatment practices are inefficient, expensive, and often environmentally unfriendly. Feller-bunchers, single-grip guillotines, harvester heads, and manual felling are commonly used.

Construction of Stemmaster

StemMaster head cuts the tree with a hydraulically driven disc blade or robust chain saw and moves the trees continuously by elastic collectors to the intermediate wood storage.

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Note: Can be optionally equipped with a guillotine cutting blade for bigger diameter single trees

Features and Compatibility

The head requires much less power compared to felling heads, which enables the use of older machines that are widely available. The fuel economy of the head is great due to the pressure-compensated valve bench.

The continuously stem collecting
system with an integrated cutting blade is
the key principle.

Second hand small scale forest
machine can be utilized as a StemMaster’s
base machines.

StemMaster bioenergy heads have
a simple robust design with a modern
hydraulic system.

The thicker the forest, the better it is for Stemmaster. The head can handle all kinds of stands as long as the tree size is a good fit.

Suitability

StemMaster is available in two sizes. In optimal conditions, the top hourly output of the bigger model is 12 or 15 m3 depending on the size of StemMaster head.

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History

Continuously-collecting fuel treatment felling head method is proven and can revolutionize how fuel treatments are done. It will reduce the cost of fuel treatments by 80%.

Contact Details

Feel free to reach out anytime to discuss about opportunities to collaborate.

Mr. Turkka Lastunen

CEO and Entrepreneur

E: turkka.lastunen@gmail.com

T: +358 44 513 3615





    “TuLaCo Oy Ltd is developing an environmentally friendly, continuously collecting biomass and energy wood StemMaster harvester head product range, including the ability to do mechanized fuel management forest operations globally.

    The product range head can be attached to a variety of brands, models, and sizes of base machines existing around the world. StemMaster can also be mounted with heads on used base machines, which means recycling the used machines.

    The European Union is our co-founder and enables the professional execution of the project.”

    tulaco.oy@gmail.com

    www.tulaco.fi

    www.stemmaster.ca

    HEADQUARTER

    Lehtohaankuja 101, 20900 TURKU, Finland

    BRANCH OFFICE / FACTORY

    Länsikatu 15 3F 211 / Pamilonkatu 25
    80110 JOENSUU, Finland

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