[Public-list] Bilge Pumps

[George Dinwiddie]

Richard,

The deepest part of the bilge is back under the engine, not under the 
batteries.  You want the bilge pump back as far as you can.

I mounted an electric bilge pump to a board which angles back under the 
engine from a point next to the batteries.  You do have to remove the 
aft battery to pull it out.

I ran the hose up the hull and teed into the existing transom outlet for 
the manual bilge pump.  I put a bronze 1-1/4" T on the throughull, and 
attached the manual bilge pump hose to the straight-through part.  On 
the side outlet, I reduced down to a 1/2" nipple pointed outboard, so 
that it's always level or upwards.  Down at the pump end, I reduced the 
hose to 1/2" ID, so that when the pump shuts off there's relatively 
little water to drain back down.

Get a decent sized pump.  I think I ended up with a 1500 gal/hr unit. 
The small ones won't pump that far.  The water would get within a couple 
inches of the throughull, but not pump out unless I'd *just* charged the 
batteries with shore-power.

  - George

Richard Mair wrote:
> Has anyone wit  a lined boat cut an inspection hole in
> the liner and installed a bilge pump. We are thinking
> of doing this and having the pump mounted so it can be
> easly pulled out for maintaince.  I Figure just by the
> steps where the battries are is probably the deepest
> part of the bnilge. To avoid drilling another hole in
> the hull I am also thinking of using a  "T" or "Y"
> fitting going into the exit of the manual pump
> possibly with a valve to prevent backflow back into
> the bilge.
>  Has anyone done this or hhave anycomments on the idea
> Richard
> 
> =====
> Into The Blue   ^ 
> Richard &      /|\ 
> Margaret      / | \
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   When I remember bygone days                         George Dinwiddie
   I think how evening follows morn;            gdinwiddie at alberg30.org
   So many I loved were not yet dead,           http://www.Alberg30.org
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