[Rhodes22-list] Bonnie Fuel Pump Problems

Bill Effros bill at effros.com
Wed Nov 8 14:04:17 EST 2006


USAF had a similar problem with the B-47.  Do what they did:

Strap on JATO bottles for take off, fly at 90% power.

Deploy an "approach chute" for landings.

Bill Effros

Michael D. Weisner wrote:
> Hank and Brad,
>
> The situation the you refer to is found in a carb (normally aspirated)
> equipped engine fuel bowl fill problem.  Either the float level is set too
> low or the bad pump doesn't have enough pressure to open the inlet valve.  A
> 12 pound output (if the gauge is correct) should be plenty of pressure to do
> the job.
>
> I still think that the problem is related to the line going to the pump.  If
> the line is kinked, the pump may have difficulty drawing enough fuel through
> the high resistance of the line when at low RPM (reduced output).  This is
> akin to trying to breath through a narrow hose compared to a large bore hose
> when under water.  It is much harder to suck through the narrow tubing.  The
> electric pump, which I presume is located near the tank, pushes the fuel
> through the line at full (30 PSI?) pressure, regardless of engine speed.
>
> Is the problem related to both (or several) tanks?  If it is, the problem
> may be in the tank selector.
>
> Mike
>
>
> From: "Hank" <hnw555 at gmail.com>
> Sent: Wednesday, November 08, 2006 12:31 PM
>
>
>   
>> Brad,
>>
>> A slow drip, say 1 drop every 5-10 seconds, is normal even when the boat
>>     
> is
>   
>> not running.  The only way to eliminate drips completely is to install a
>> dripless shaft seal.
>>
>> IRT, your toy, it makes me think of the old joke, Doctor it hurts when I
>> cough.  So don't Cough!  So don't bring the idle down below 1000!  Easy
>>     
> fix,
>   
>> next problem?
>>
>> Seriously, I used to have a similar problem on a Chevy Truck, except in
>> reverse.  At idle and slow speeds the engine ran fine, but at highway
>>     
> speeds
>   
>> the engine would sputter.  The pump was in failing mode and supplied a
>> reduced amount of fuel, which was fine at lower speeds, but not sufficient
>> at highway speeds.
>>
>> Here is an idea.  In a regular carburetor, the pump sends fuel up to a
>> supply chamber in teh carburetor that is there to react to immediate
>>     
> changes
>   
>> in throttle settings.  It sounds like your pump quits working below 1000
>>     
> rpm
>   
>> and the engine dies once the feed chamber has been emptied.
>>
>> Hank
>>
>> On 11/8/06, Brad Haslett <flybrad at gmail.com> wrote:
>>     
>>> Hank & Rummy,
>>>
>>> The issue is that the dripping continues when the engine is shut off.
>>>       
> In
>   
>>> fact, it was dripping when I arrived at the boat after not having been
>>>       
> run
>   
>>> for a week.  It has always dripped some while running, as it is supposed
>>> to,
>>> but never that much.  What causes it to drip stationary?
>>>
>>> While you're solving that problem, I just got back from the airport to
>>>       
> fly
>   
>>> my airplane.  The new engine driven pump works fine at full power all
>>>       
> the
>   
>>> way down to idle at 1000 rpm.  However, comma, when you pull the idle
>>>       
> back
>   
>>> to 700, where it is correctly set, the fuel pressure off the engine pump
>>> stabilizes at 12 pounds, which is fine, then after 30 seconds suddenly
>>> goes
>>> to zero and the engine quits.  If you can flip on the electric pump fast
>>> enough it comes back to life.  The mystery continues.
>>>
>>> Don't you just love toys!
>>>
>>> Brad
>>>
>>>
>>> On 11/8/06, Hank < hnw555 at gmail.com> wrote:
>>>       
>>>> Brad,
>>>>
>>>> All standard stuffing boxes should drip some.  It is required to keep
>>>>         
> it
>   
>>>> lubricated and cooled.  My Islander 36 always had some water in the
>>>>         
>>> bilge
>>>       
>>>> and that is normal for a lot of boats.  I didn't worry about it
>>>>         
> freezing
>   
>>>> as
>>>> it was not "enclosed" such as inside a pipe or engine block and
>>>>         
> couldn't
>   
>>>> rupture anything.
>>>>
>>>> That being said, if you find that you do have stuffing box issues, I
>>>> highly
>>>> recommend changing to a dripless system.  After, I switched mine, I
>>>>         
>>> never
>>>       
>>>> had any water coming in from there.  Check out
>>>> http://www.shaftseal.com/index.html
>>>>
>>>> Hank
>>>>
>>>> On 11/8/06, Brad Haslett <flybrad at gmail.com> wrote:
>>>>         
>>>>> Hank,
>>>>>
>>>>> Good question.  I'm thinking the water is getting by the stuffing
>>>>>           
> box
>   
>>>> and
>>>>         
>>>>> finding the next weakest link.  The sequence is transmission - brass
>>>>> coupling - rubber enclosed shaft? - and I think the stuffing box.
>>>>>           
> To
>   
>>> be
>>>       
>>>>> honest, I didn't have time to troubleshoot the problem.  The steady
>>>>>           
>>> drip
>>>       
>>>>> is
>>>>> coming from the brass coupling just downstream from the tranny.  It
>>>>>           
>>> has
>>>       
>>>>> two
>>>>> fittings that tighten against each other but I didn't have the tools
>>>>>           
>>> to
>>>       
>>>>> try
>>>>> it. The water accumulates to the top of the bilge and then vents
>>>>> overboard.
>>>>> I'll need to fix or haul before the first good freeze.  I keep a
>>>>>           
>>> heater
>>>       
>>>> on
>>>>         
>>>>> at 40 degrees when I'm gone during the winter but yesterday the
>>>>> electricity
>>>>> at the docks was off.
>>>>>
>>>>> Any more ideas?
>>>>>
>>>>> Brad
>>>>>
>>>>>
>>>>> On 11/8/06, Hank <hnw555 at gmail.com> wrote:
>>>>>           
>>>>>> Brad,
>>>>>>
>>>>>> How could the drive shaft be dripping where it connects to the
>>>>>> transmission?  Where is the water coming in from?  I started to
>>>>>>             
>>> think
>>>       
>>>>> the
>>>>>           
>>>>>> stuffing box, but it should be lower than the tranmission
>>>>>>             
> coupling,
>   
>>> so
>>>       
>>>>>> that
>>>>>> shouldn't be a possibility.  Is the water coming in from above the
>>>>>>             
>>>>> engine
>>>>>           
>>>>>> and then just collecting and dripping off of the shaft?
>>>>>>
>>>>>> Just some ideas.
>>>>>>
>>>>>> Hank
>>>>>>
>>>>>> On 11/8/06, Brad Haslett < flybrad at gmail.com> wrote:
>>>>>>             
>>>>>>> Finally,  some good news to brighten-up a difficult yesterday.
>>>>>>>               
> We
>   
>>>>>> closed
>>>>>>             
>>>>>>> on
>>>>>>> the sale of our shop building near the lake and sold our tractor
>>>>>>>               
>>> we
>>>       
>>>>> used
>>>>>           
>>>>>>> to
>>>>>>> bushog the place as well. The buyer for the tractor kept me
>>>>>>>               
>>> waiting
>>>       
>>>>> over
>>>>>           
>>>>>>> four hours and then did some last minute haggling over a
>>>>>>>               
>>> previously
>>>       
>>>>>> agreed
>>>>>>             
>>>>>>> upon price.  Forunately for him I came unarmed. The bad news is
>>>>>>>               
>>> that
>>>       
>>>>> my
>>>>>           
>>>>>>> boat
>>>>>>> had water in the bilge for the first time ever.  The drive shaft
>>>>>>>               
>>> is
>>>       
>>>>>>> steadily
>>>>>>> dripping where it connects to the transmission.  This may be a
>>>>>>>               
>>>> result
>>>>         
>>>>> of
>>>>>           
>>>>>>> the
>>>>>>> grounding last year.  Anyway, the repair will probably require
>>>>>>>               
> it
>   
>>> to
>>>       
>>>>> be
>>>>>           
>>>>>>> hauled, which  is a good idea anyway to inspect for damage.
>>>>>>>               
> I've
>   
>>>> been
>>>>         
>>>>>>> operating on the theory of "what you don't know can't hurt you"
>>>>>>>               
>>> but
>>>       
>>>>> that
>>>>>           
>>>>>>> game has been played long enough.
>>>>>>>
>>>>>>> The DC-10 is going away in the next couple of years and I have
>>>>>>>               
> to
>   
>>>> make
>>>>         
>>>>>> the
>>>>>>             
>>>>>>> leap into the digital age one way or the other.  I have been
>>>>>>>               
>>>>> predicting
>>>>>           
>>>>>>> this
>>>>>>> event all along and damned if I wasn't right.  Here is something
>>>>>>>               
>>> to
>>>       
>>>>> look
>>>>>           
>>>>>>> forward to.
>>>>>>>
>>>>>>> Brad
>>>>>>>
>>>>>>> --------------------------
>>>>>>>
>>>>>>> *Company Cancels A380 Order *
>>>>>>>
>>>>>>> MEMPHIS, Tenn.--(BUSINESS WIRE)--FedEx Express, a unit of FedEx
>>>>>>>               
>>>> Corp.
>>>>         
>>>>>>> (NYSE:
>>>>>>> FDX), announced today an agreement with The Boeing Company
>>>>>>>               
> (NYSE:
>   
>>>> BA)
>>>>         
>>>>> to
>>>>>           
>>>>>>> acquire 15 new Boeing 777 Freighter aircraft with options to
>>>>>>>               
>>>> purchase
>>>>         
>>>>> an
>>>>>           
>>>>>>> additional 15 aircraft. The decision to purchase the 777F was
>>>>>>>               
> made
>   
>>>>> after
>>>>>           
>>>>>>> Airbus announced significant delays in delivery of the A380.
>>>>>>>               
> FedEx
>   
>>>>>> Express
>>>>>>             
>>>>>>> notified Airbus that it has cancelled its order for 10
>>>>>>>               
> A380-800Fs.
>   
>>>>>>> "Global demand for air cargo and express services continues to
>>>>>>>               
>>> grow
>>>       
>>>>>>> rapidly
>>>>>>> and FedEx has made significant investments in our network to
>>>>>>>               
> meet
>   
>>>>>>> customers'needs and fulfill our business objectives. Therefore,
>>>>>>>               
> it
>   
>>>> was
>>>>         
>>>>>>> necessary and
>>>>>>> prudent for us to acquire the Boeing 777 Freighter." said
>>>>>>>               
>>> Frederick
>>>       
>>>> W.
>>>>         
>>>>>>> Smith, chairman, president and chief executive officer, FedEx
>>>>>>>               
>>> Corp.
>>>       
>>>>> "The
>>>>>           
>>>>>>> availability and delivery timing of this aircraft, coupled with
>>>>>>>               
>>> its
>>>       
>>>>>>> attractive payload range and economics, make this choice the
>>>>>>>               
> best
>   
>>>>>> decision
>>>>>>             
>>>>>>> for FedEx, its customers, shareowners and employees."
>>>>>>>
>>>>>>> FedEx Express continues to be Airbus' largest wide-body airplane
>>>>>>>               
>>>>>> customer
>>>>>>             
>>>>>>> and will add additional new and used Airbus wide-body aircraft
>>>>>>>               
> to
>   
>>>> its
>>>>         
>>>>>>> fleet
>>>>>>> in coming years. Six new A300-600 aircraft are scheduled to join
>>>>>>>               
>>> the
>>>       
>>>>>> FedEx
>>>>>>             
>>>>>>> fleet in 2007.
>>>>>>>
>>>>>>> *Boeing 777*
>>>>>>>
>>>>>>> The Boeing 777 Freighter is the world's largest twin-engine
>>>>>>>               
> cargo
>   
>>>>>> aircraft
>>>>>>             
>>>>>>> with a range of more than 6,100 nautical miles and a revenue
>>>>>>>               
>>> payload
>>>       
>>>>>>> capacity of 171,000 pounds. This represents a 2,200 nautical
>>>>>>>               
> mile
>   
>>>>>> increase
>>>>>>             
>>>>>>> in range and an additional 8,500 pounds of revenue payload over
>>>>>>>               
>>> the
>>>       
>>>>>>> MD-11F,
>>>>>>> which is FedEx's primary long-haul aircraft. These advantages
>>>>>>>               
> will
>   
>>>>>> result
>>>>>>             
>>>>>>> in
>>>>>>> more non-stop, point-to-point transoceanic routes with shorter
>>>>>>>               
>>>> flight
>>>>         
>>>>>>> times,
>>>>>>> enabling improved service offerings to FedEx customers. FedEx
>>>>>>>               
>>>> Express
>>>>         
>>>>> is
>>>>>           
>>>>>>> expected to take delivery of four of the 777 aircraft in
>>>>>>>               
> calendar
>   
>>>> year
>>>>         
>>>>>>> 2009,
>>>>>>> eight in 2010 and the remaining three in 2011.
>>>>>>>
>>>>>>> "The Boeing 777F will allow FedEx Express to fly directly
>>>>>>>               
> between
>   
>>>>> major
>>>>>           
>>>>>>> markets and hubs in Asia, Europe and the U.S. with more freight
>>>>>>>               
>>> and
>>>       
>>>> in
>>>>         
>>>>>>> less
>>>>>>> time than it takes today, improving fuel efficiency and lowering
>>>>>>>               
>>>> total
>>>>         
>>>>>>> operating costs," said David J. Bronczek, president and chief
>>>>>>>               
>>>>> executive
>>>>>           
>>>>>>> officer, FedEx Express.
>>>>>>> __________________________________________________
>>>>>>> Use Rhodes22-list at rhodes22.org , Help? www.rhodes22.org/list
>>>>>>>
>>>>>>>               
>>>>>> __________________________________________________
>>>>>> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>>>>>>
>>>>>>             
>>>>> __________________________________________________
>>>>> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>>>>>
>>>>>           
>>>> __________________________________________________
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>>>>         
>>> __________________________________________________
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>>>       
>> __________________________________________________
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>>     
>
> __________________________________________________
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>   


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