Today's Message Index:
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1. 10:24 AM - Eliminate Fuel Pumps on High Wing?? (Don Morrisey)
2. 10:36 AM - Re: Eliminate Fuel Pumps on High Wing?? (steve)
3. 02:36 PM - Re: Eliminate Fuel Pumps on High Wing?? (Peter Harris)
Message 1
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| Subject: | Eliminate Fuel Pumps on High Wing?? |
Hello,
Myself and another BushCaddy builder will be installing our 3300's very soo
n on our high wing taildraggers. I am curious how many high wing airplanes
(or others) have been able to eliminate the engine driven fuel pump and th
erefore the backup and run on gravity? This would be with the standard Bin
g Carb. Thanks.
Don...www.donsbushcaddy.comDon Morrisey's Skunkworks
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| Subject: | Re: Eliminate Fuel Pumps on High Wing?? |
Don
I had an Avid Flyer with the 2200A engine. I also had a forward facing
fuel tank vent that gave the tank positive air pressure. The Avid
factory ( now out of business ) stated that they tried flying without
the fuel pump and just the air pressure worked ok. Thats what they
said........
I installed an electric backup anyway but never needed it.....
SW
----- Original Message -----
From: Don Morrisey
To: jabiruengine-list@matronics.com
Sent: Saturday, October 20, 2007 10:24 AM
Subject: JabiruEngine-List: Eliminate Fuel Pumps on High Wing??
Hello,
Myself and another BushCaddy builder will be installing our 3300's
very soon on our high wing taildraggers. I am curious how many high
wing airplanes (or others) have been able to eliminate the engine driven
fuel pump and therefore the backup and run on gravity? This would be
with the standard Bing Carb. Thanks.
Don...
www.donsbushcaddy.com
Don Morrisey's Skunkworks
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Message 3
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| Subject: | Eliminate Fuel Pumps on High Wing?? |
Don,
In the tests that I conducted with the 33000 I found that the carb as
supplied is fitted with the float needle seat 2.25mm diam which is meant for
gravity feed and at the anything above 2700rpm the seat leaks additional
fuel into the bowl and makes the mixture excessively rich. The pump fed carb
should be fitted with a smaller needle seat.
If you run the carb as supplied with gravity feed alone it will run leaner
that the others above 2700 but I found it still within EGT limits.
Peter H
_____
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of Don
Morrisey
Sent: Sunday, 21 October 2007 3:24 AM
Subject: JabiruEngine-List: Eliminate Fuel Pumps on High Wing??
Hello,
Myself and another BushCaddy builder will be installing our 3300's very soon
on our high wing taildraggers. I am curious how many high wing airplanes
(or others) have been able to eliminate the engine driven fuel pump and
therefore the backup and run on gravity? This would be with the standard
Bing Carb. Thanks.
Don...
www.donsbushcaddy.com <http://www.donsbushcaddy.com/>
Don Morrisey's Skunkworks
_____
Windows Live Hotmail and Microsoft Office Outlook - together at last. Get it
now!
<http://office.microsoft.com/en-us/outlook/HA102225181033.aspx?pid=CL1006269
71033>
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