I like screw type chunkers because of lower cyclic loading.
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Hi.
A collection of small DIY spiral-shear systems are in this video.
It does CC languages translate pretty well:
S.U.
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Screw style chippers generate a lot of friction as the cutting blade is dragged across the wood. Rebak is a shearing action and doesn’t generate that kind of friction though the blades need to be sharp in order to shear rather than crush.
If the chipper is PTO driven, the tractor probably has a surplus of power so a screw chipper works well. But if the chipper is being powered on a stand along basis, Rebak should be easy to drive. And if you use a flywheel on a rebak chipper, it can handle bigger branches as long as you let the flywheel recover its speed.
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