[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
>>>>>>>
>>>>>>>
>>>>>> __________________________________________________
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>>>>>>
>>>>>>
>>>>> __________________________________________________
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>>>>>
>>>>>
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>>>>
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>
> __________________________________________________
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