[Rhodes22-list] My other "boat"

[Michael D. Weisner]

Brad,

Is the electric (aux) pump located in close proximity to the tank?  Might 
you have a loose connection or very minor leak between the electric pump and 
the engine driven pump?  This might allow air to enter the line when drawn 
by the engine driven pump while not affecting the ability of the electric 
pump to deliver fuel.  Has the system (lines, pumps and fuel tank selector 
components) been tested to maintain static pressure (or vacuum)?

Mike

From: "Brad Haslett" <flybrad at gmail.com>
Sent: Thursday, November 02, 2006 11:16 AM


> Philip,
>
> That's one of the things we're looking at right now.  The overhaul 
> facility
> re-overhauled the pump at no charge.  One of the theories we're floating 
> is
> that air (or vacuum) got in the pump and caused it to fail but what we 
> can't
> figure out is why it ran on the electric pump.  Maybe it was just a
> different pressure differential.  I have to work this afternoon and the 
> pump
> won't be installed until mid-day.  Tomorrow I'm going to fly it around a 
> bit
> and see what happens.
>
> Brad
>
>
> On 11/2/06, 3drecon at comcast.net <3drecon at comcast.net> wrote:
>>
>> Brad,
>>   A few years ago my Harley quit on me on the highway for no apparent
>> reason (I just had to pull over).  It turned out to be the tank vent. 
>> After
>> it sucked out so much fuel, a vacuum developed and no more fuel would
>> flow.  I opened the cap and it ran fine.  I bought a new cap.
>>
>> Philip
>>
>>
>> -------------- Original message --------------
>> From: "Brad Haslett" <flybrad at gmail.com>
>>
>> > Rummy,
>> >
>> > As we speak, your boat is faster than my airplane. I'm headed to the
>> > airport this morning to see if the fuel pump has been re-installed. It
>> > tested fine on the bench at the overhaul facility. The original problem
>> was
>> > the engine quit at 4500 feet on the left tank. I turned on the electric
>> > backup and she re-lit. Then I switched to the right tank, turned off 
>> > the
>> > electric pump, and she quit again. Just to be safe, I climbed another
>> two
>> > thousand feet and kept a close eye on the GPS nearest airport display.
>> >
>> > Obviously, the engine driven pump is bad, both my mechanic and I
>> > agreed. NOT! The tech guru from the Bonanza Society suggested looking 
>> > at
>> > the fuel cap vents and seals. I hate these kind of mysteries.
>> >
>> > This bird has the STC for auto-gas but I was running straight 100 
>> > octane
>> > low-lead avgas at the time. Once we solve the fuel delivery issues, the
>> > plan is to fill the right main and aux tank with BP (Amaco) 93 octane 
>> > at
>> a
>> > buck to a buck-and-half less per gallon. The Bo' burns about 12 gallons
>> per
>> > hour versus 9 for the Mooney M20C (what I almost bought) but is ten
>> knots
>> > faster. With auto-fuel the operating cost, at least as far as fuel is
>> > concerned, is about the same.
>> >
>> > Of course, in the "ramp stabilization mode" where she sits right now,
>> the
>> > fuel cost is zero.
>> >
>> > Brad
>> >
>> >
>> > On 11/2/06, R22RumRunner at aol.com wrote:
>> > >
>> > >
>> > > In a message dated 11/2/2006 2:36:50 A.M. Eastern Standard Time,
>> > > jhnblngr at yahoo.com writes:
>> > >
>> > >
>> http://www.rhodes22.org/pipermail/rhodes22-list/attch/200610/26/bo3.jpg
>> > >
>> > >
>> > >
>> > > Brad,
>> > > She must have IMF?
>> > >
>> > > Rummy
>> > > __________________________________________________
>> > > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>> > >
>> > __________________________________________________
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