Mini servo valve - geared
thingiverse
I needed a small motorized valve to make real enviroment simulation for some liquids flow. Direct valve drive design has a toque problem because the servo I wanted to use is too weak/little to work properly in that mechanism. To have balance between speed and torque, I choosed gearbox with 1:1.5 ratio (16:24 teeth). Valve is compatible with Festo HE-2-QS-8 (8mm terminals) The best thing is that it really works with even very low quality, cheap servo :) https://www.youtube.com/watch?v=Td3jFZfPT-8 https://www.youtube.com/watch?v=r-4WYzMF41U
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