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  1. 28th December 2008, 09:04 PM #1
    46150
    46150 is offline Senior Member
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    Default Dust extraction question

    Am I correct in assuming that the shorter the dust extraction hose in relation to the machine performs better? Does the longer the hose reduce the partial vacuum created?Any comments..................Regards...Al
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  2. 28th December 2008 09:04 PM # ADS
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  3. 28th December 2008, 09:13 PM #2
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    malb
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    Default

    Flow resistance is proportional to the length of hose/pipe and the volume being moved, and inversely proportional to the cross section of the hose/pipe for a straight setup or one with very gentle curves..

    So a short fat hose should flow better than a long slender one. Concertina hoses and sharp bends will also reduce flow rates because of increased turbulance and resistance.
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  4. 28th December 2008, 09:28 PM #3
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    Master Splinter
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    Yes it does decrease the vacuum, but in the 1-5 meter range you are not really going to notice it if you are connecting to a high velocity device like a vacuum cleaner.

    The longer the hose, the more opportunity there is for it to flop around on the floor and for you to trip over it/tread on it.
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  5. 28th December 2008, 09:33 PM #4
    46150
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    Thanks Fellas
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