Received-SPF: none
 receiver=logan.com; client-ip=216.211.128.10; envelope-from=joeh@pilgrimtech.com
From: "Joe Hull" <joeh@pilgrimtech.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: OT: Gardenhose as level
Date: Tue, 5 Sep 2006 20:18:25 -0700
Message-ID: <011601c6d163$23f2a5b0$bb02a8c0@redmond.corp.microsoft.com>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
Thread-Index: AcbRYMNIcGdQF9hoTeakGM2idBg5rwAAQvxw
In-Reply-To: <list-1365341@logan.com>

Finn, 
I think the black hole might be a possibility - but let's explore other
options a little further. :)

What do you mean by "Plain hose"?  If it's like my "plain hose" you can't
see through it!  So how are you checking the level?  If the hose ID is
smaller (say 1/4" - 3/8") then surface tension will allow for more creep up
the walls than is apparent in the big bottle. That doesn't account for 3/4"
difference but might appear to be an 1/8" to 1/4" difference ( although 1/4"
is probably too high ). 

The bigger bottle doesn't change the amount of pressure - only spreads it
out. Both the hose and the bottle levels should be equal. At the worst they
should be cycling back and forth - each end moving up and down a little as
the system settles down.

Joe Hull
Cozy Mk-IV N31CZ (65 hrs - Rotary 13B NA) 
Redmond (Seattle), Washington

> -----Original Message-----
> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
> Behalf Of Finn Lassen
> Sent: Tuesday, September 05, 2006 8:01 PM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: OT: Gardenhose as level
> 
> Didn't work too well for me. Throughout the day the other end from the
> bottle varied as much as 3/4 inch!
> 
> Doesn't the extra surface area in the bottle exert greater pressure than
> the other plain hose end?
> 
> Holding the plain hose end next to the bottle showed the hose end 1/4"
> above the bottle level.
> 
> Guess I need to buy some expensive clear hose to ensure no air bubbles.
> I had flushed out the garden hose real well, but still ...
> 
> Did use dish soap as wetter.
> 
> Maybe my lot really is near a small slowly moving black hole :)
> 
> Finn
> 
> Blake Lewis wrote:
> 
> >   Using a two liter bottle on one end minimizes this effect. When the
> > hose/water expands/contracts it is like throwing a bucket of water in
> > a pond. It doesn't change the water level much.
> >   The larger the surface area in the bottle the better....
> > Blake
> >
> > On 8/29/06, Sandy <mldsub@earthlink.net> wrote:
> >
> >>
> >>
> >>
> >>
> >> Hi Guys,
> >>
> >> In my experience, a water level is more than adequate for any
> >> construction
> >> job.
> >>
> >> The problem with implementation is that the water volume and the tubing
> >> volume
> >>
> >> is in a constant state of flux.  This changes the height of the water
> >> column
> >> at both
> >>
> >> ends.  Temperature changes, even small ones, will change the size of
> the
> >> tubing and
> >>
> >> the volume of the water.
> >>
> >> When checking for level, both ends have to be verified at the same
> time.
> >>
> >> --Sandy
> >
> >
> > --
> > Homepage:  http://www.flyrotary.com/
> > Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
> >
> >
> 
> 
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/