Hay Cutter/Research Development

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Hay Cutter
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  • Hay Cutter Function is to cut hay (or the stalks of any plant) near the ground.


  • Cutting Action results from the movement of a reciprocating sickle bar against a stationary sickle bar. Another general design option is free-spinning knives on whirling discs, which is not chosen for its relatively high danger level and power requirements.
  • Kinetic Power for moving the reciprocating cutting bar is gained from a powered hydraulic motor with a converting mechanism for linear motion.
  • Cut Clearance is the amount of space between the cutting edges of the stationary and reciprocating sickle bars. Cut clearance is required to avoid excessive heat buildup from friction between the stationary and reciprocating cutting bar.
  • Cutting Knives Mounting should use bolting as ease of disassembly for maintenance or replacement purposes.

Relevant Links

Conceptual Notes



  • Cutting System
  • Structural System
  • Hydraulic System

Cutting System

Reciprocating Sickle Bar

Stationary Sickle Bar

Structural System




Hydraulic System


Industry Standards

DIY Horse-Drawn Sickle bar on YouTube - [1]


Wanted: List of expenses for prototyping and documenting GVCSTool

Peer Reviews

Wanted: Peer reviews from the scientific community regarding the R&D of GVCSTool

Experiments and Prototypes

Wanted: Empirical data on performance

Experimental Results

Prototype Notes, Observations, etc.

Failure Mode Analysis

Testing Results

Recommendations for Improvement