[Public-List] Blowers

[HAZLEGROVE]

   Greg,

   On Quest I have a diesel so my blower is being used for engine bay
   cooling and the 4” hose terminates near the top of the engine rather
   the bilge. The hose is attached to an 4” inline blower mounted on the
   inside of the port cockpit bulkhead accessed via a cutout that is used
   for access behind the engine.  The hose then runs to the port dorade
   next to the lazerette hatch.

   I found the blower to be quite powerful - more than I needed - and
   loud.  It also stated that it was not designed for “continuous duty”
   probably because it was working pretty hard and drawing about 5 amps.
   I purchased a cheap 12v rheostat on Amazon  ([1]DC Motor Speed
   Controller Universal DC 12V 24V 10A Electronic Stepless Speed Regulator
   Switch for Car Truck Fan Heater Control) and ran it through a two
   position running light switch on the instrument panel. The first switch
   position runs through the rheostat and the fan speed can be dialed down
   a by the little dial on the rheostat.  The second switch position has
   the fan running 100%, useful perhaps to temporarily remove gas fumes.
   This setup works well and is much quieter running at about 50%-60% and
   drawing less than 2 amps.  I figure it might also extend the life of
   the blower which was relatively cheap compared to the very robust - and
   expensive continuous duty fans.  As an aside I also purchased a cheap
   little digital thermometer to monitor engine bay temperature and can
   adjust the fan speed as necessary to account for higher ambient
   temperatures or heavier engine load.

   Richard Hazlegrove

   Quest 433

   Mobjack Bay, VA

     On Jul 17, 2023, at 4:12 PM, public-list-request at lists.alberg30.org
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   Today's Topics:
     1. Blowers (Greg Hounsell)
   ----------------------------------------------------------------------
   Message: 1
   Date: Mon, 17 Jul 2023 15:02:14 -0400
   From: Greg Hounsell <greg.hounsell at gmail.com>
   To: Alberg 30 Public List -- open to all
      <public-list at lists.alberg30.org>
   Subject: [Public-List] Blowers
   Message-ID:
      <CAF=smrhV0GQ-NGMkrZxppsKejvbZHDh31_qmpkrA+L4+KZybqw at mail.gmail.com>
   Content-Type: text/plain; charset="UTF-8"
   Afternoon
   Wondering what people use for their bilge blowers and where do they
   mount
   them? Mine is in the aft lazerette (attwood) and competes in volume
   level
   when the engine (A4) is running. Wanting to make it much more quiet if
   possible.
   Greg
   #592
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References

   1. https://www.amazon.com/gp/product/B07T35JDTR/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1