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  1. #16
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    Oct 2012
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    brisbane
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    I like the relative simplicity of your design Bob. I've no experience with 150mm fittings though so any chance you could post some details of the components that make up the construction? Eg What is the bell mouth made from? What is the diameter of the flexible hose and what is the fitting (collar) that it is attached into?

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  3. #17
    Join Date
    Feb 2006
    Location
    Perth
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    27,792

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    Some details and more photos here.
    Air speeds in and around duct openings and blades (NB Invisible dust discussed)
    the rest of that thread has some technical details about Bell mouth hood.
    It was designed and built as a test port on which I did a fair bit of testing but it worked so well I ended up painting it and using it as is.

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