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Noise tests.

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  • Noise tests.

    Solo 40 engine passed the DULV noise test at the figures below.
    noise tests at DULV.
    Helix Prop.
    2-blade, 160cm/15°pitch (55dbA)
    3-blade, 160cm/13°/11° (54dbA)
    3-blade, 140/15° (57dbA)
    reduction 1:2,25
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