Today's Message Index:
----------------------
1. 09:25 AM - Fuel flow (clemwehner)
2. 09:36 AM - fuselage angleWhat (clemwehner)
3. 10:07 AM - Re: Fuel flow (Guy Buchanan)
4. 10:51 AM - Re: fuselage angleWhat (Richard Weiss)
5. 11:10 AM - Boot cowl attachment (Michael Kraus)
6. 03:02 PM - Re: Boot cowl attachment (Brian Leach)
7. 05:44 PM - Re: Boot cowl attachment (Lowell Fitt)
8. 05:45 PM - Re: fuselage angleWhat (Lowell Fitt)
Message 1
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Our KF-IV has the plastic header tank behind the seat. Since the header tank is
lower than the carbs, how can the engine run from the header tank in the event
fuel flow stops from the main tanks for some reason? Some guys have said that
there is about 10 minutes of fuel in the header tank. How is that possible with
no gravity flow in level flight?
Does the engine fuel pump suck fuel from the header when it's running?
thanks,
Clem
Oklahoma
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=406963#406963
Message 2
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| Subject: | fuselage angleWhat |
What angle should the fuselage be raised to when doing a gravity flow fuel flow
test on a KF-IV ?
thanks for the help.
Clem
Oklahoma
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=406964#406964
Message 3
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On 8/18/2013 9:25 AM, clemwehner wrote:
> Our KF-IV has the plastic header tank behind the seat. Since the header tank
is lower than the carbs, how can the engine run from the header tank in the event
fuel flow stops from the main tanks for some reason? Some guys have said that
there is about 10 minutes of fuel in the header tank. How is that possible
with no gravity flow in level flight?
>
> Does the engine fuel pump suck fuel from the header when it's running?
>
In a "normal" IV installation the mechanical pump will draw fuel from
the header at any sustainable pitch angle. Interestingly, I could find
no specification in the install manual for the minimum fuel level (below
the pump) that the pump would draw. Note that the mechanical pump works
with many aircraft that have low wings and therefore much less head
pressure than even your header tank.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
Now a glider pilot, too.
Message 4
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| Subject: | Re: fuselage angleWhat |
Clem,
This is a very interesting subject. The NTSB has raised questions about this since
engine/fuel issues account for a large percentage of E-AB accidents. I suggest
viewing an EAA video (it was a webinar) on this same subject. We created
this in direct response to the NTSB and it's been well received. See if this
helps answer your question.
Here's the link to the video: http://www.eaavideo.org/video.aspx?v=2195707082001
Rick Weiss
Series V (Skystar s/n 1) Speedster:-)
Rotax 912S, Dynon Sky View/ADS-B
Spruce Creek Fly In, FL
On Aug 18, 2013, at 12:36 PM, clemwehner wrote:
>
> What angle should the fuselage be raised to when doing a gravity flow fuel flow
test on a KF-IV ?
>
> thanks for the help.
>
> Clem
> Oklahoma
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=406964#406964
>
>
>
>
>
>
>
>
>
>
Message 5
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| Subject: | Boot cowl attachment |
I could not find in the directions how to attach the boot cowl. I don't rea
lly see a need to ever remove it other than ease of access to the front side
of the IP.
Screws wouldn't look as nice as hysol and riveting in place. I'm just wonde
ring what others have done.
Thanks
-Mike Kraus
Sent from my iPhone
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Message 6
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| Subject: | Re: Boot cowl attachment |
Hi Michael. Don't kid yourself that you wont want to remove it. I have a
booted cowl on my Avid that is held around the bottom of the windscreen with
machine screws and captive nuts about 3 1/2 inches apart, and camlocks
everywhere else. I have had it off numerous times, to install and service
a transponder, to change a dud radio, to change EGT's that stopped working,
and to take the engine out to replace the water pump. (Rotax 912) Don't
rivet it or you will certainly regret it.
Brian
----- Original Message -----
From: "Michael Kraus" <n223rv@wolflakeairport.net>
Sent: Monday, August 19, 2013 6:10 AM
Subject: Kitfox-List: Boot cowl attachment
I could not find in the directions how to attach the boot cowl. I don't
really see a need to ever remove it other than ease of access to the front
side of the IP.
Screws wouldn't look as nice as hysol and riveting in place. I'm just
wondering what others have done.
--------------------------------------------------------------------------------
>
> Thanks
> -Mike Kraus
>
>
>
Message 7
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| Subject: | Re: Boot cowl attachment |
I think I would have to agree with Brian. I have helped with or built 3
Kitfoxes and one Lancair. Being able to access the area behind the panel
without laying on your back with your head against the rudder pedals is like
heaven compared with the Lancair. On that, I helped build the panel and
get it physically in the airplane, but when it came to wiring everything
together, I backed away - my old body would probably still be stuck in there
somewhere. But, the proof would be to attach the cowl, imagine every corner
of the panel, especially with radios, displays and other items extending
forward with switches, mounting hardware, and pneumatic tubing and see what
you can reach.
One other option might be to design a modular panel with sub panels that are
removable which can be assembled on your lap and then stuffed and screwed in
place.
Lowell
--------------------------------------------------
From: "Brian Leach" <leach@farmside.co.nz>
Sent: Sunday, August 18, 2013 3:00 PM
Subject: Re: Kitfox-List: Boot cowl attachment
>
> Hi Michael. Don't kid yourself that you wont want to remove it. I have a
> booted cowl on my Avid that is held around the bottom of the windscreen
> with machine screws and captive nuts about 3 1/2 inches apart, and
> camlocks everywhere else. I have had it off numerous times, to install
> and service a transponder, to change a dud radio, to change EGT's that
> stopped working, and to take the engine out to replace the water pump.
> (Rotax 912) Don't rivet it or you will certainly regret it.
>
> Brian
>
>
> ----- Original Message -----
> From: "Michael Kraus" <n223rv@wolflakeairport.net>
> To: <kitfox-list@matronics.com>
> Sent: Monday, August 19, 2013 6:10 AM
> Subject: Kitfox-List: Boot cowl attachment
>
>
> I could not find in the directions how to attach the boot cowl. I don't
> really see a need to ever remove it other than ease of access to the front
> side of the IP.
>
> Screws wouldn't look as nice as hysol and riveting in place. I'm just
> wondering what others have done.
>
>
> --------------------------------------------------------------------------------
>
>
>>
>> Thanks
>> -Mike Kraus
>>
>>
>>
>
>
>
Message 8
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| Subject: | Re: fuselage angleWhat |
Rick,
Good advice. I was interested that in the survey, only about a third of
builders did any fuel flow testing before first flight.
Lowell
--------------------------------------------------
From: "Richard Weiss" <MDKitfox@aol.com>
Sent: Sunday, August 18, 2013 10:51 AM
Subject: Re: Kitfox-List: fuselage angleWhat
>
> Clem,
>
> This is a very interesting subject. The NTSB has raised questions about
> this since engine/fuel issues account for a large percentage of E-AB
> accidents. I suggest viewing an EAA video (it was a webinar) on this same
> subject. We created this in direct response to the NTSB and it's been
> well received. See if this helps answer your question.
>
> Here's the link to the video:
> http://www.eaavideo.org/video.aspx?v=2195707082001
>
> Rick Weiss
> Series V (Skystar s/n 1) Speedster:-)
> Rotax 912S, Dynon Sky View/ADS-B
> Spruce Creek Fly In, FL
>
>
> On Aug 18, 2013, at 12:36 PM, clemwehner wrote:
>
>> <clemwehner@sbcglobal.net>
>>
>> What angle should the fuselage be raised to when doing a gravity flow
>> fuel flow test on a KF-IV ?
>>
>> thanks for the help.
>>
>> Clem
>> Oklahoma
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=406964#406964
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
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