Received-SPF: pass
 receiver=logan.com; client-ip=66.133.182.167; envelope-from=canarder@frontiernet.net
Message-ID: <423C50A4.3040601@frontiernet.net>
Date: Sat, 19 Mar 2005 10:17:40 -0600
From: Jim Sower <canarder@frontiernet.net>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040514
MIME-Version: 1.0
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] FD coolant level sensor?
References: <list-811345@logan.com>
In-Reply-To: <list-811345@logan.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Pretty much all cars have low fuel sensors.  Most are NOT floats.  I 
think there are a lot of photocell and similar sensors that distinguish 
between fuel and air and signal a low level.  Perhaps if you were to put 
one in your coolant reservoir/holding tank a couple of inches down from 
the top it would signal the absence of water as well as it does for fuel.
Just a theory ... Jim S.

Russell Duffy wrote:

> Greetings,
>  
> I'm looking for ways to put a coolant level switch in the engine, and 
> remember that the FD had a level sensor.  I never looked it one of 
> these before, so I'm wondering how it worked.  Does anyone have one 
> they can look at, or perhaps send me if you don't want it?  Does is 
> have some sort of float in it?  I have an extra 1/4" NPT hole in my 
> upper water pump housing, which would make a great place for a switch, 
> but I haven't found one that seems like it would work there very 
> well.  Did the FC use level switches?
>  
> Thanks,
> Rusty (top secret lower cowl being test fit today)