Today's Message Index:
----------------------
1. 10:40 AM - Re: Corvair Piet performance report (Rick Schreiber)
2. 04:54 PM - Corvair Piet performance report--nose tank sketch (Michael Cuy)
3. 05:00 PM - a whole page of Piet sketches---web link below (Michael Cuy)
4. 06:03 PM - Re: Corvair Piet performance report--nose tank sketch (Richard Schreiber)
5. 07:42 PM - Re: Corvair Piet performance report--nose tank sketch (taildrags)
6. 07:49 PM - Re: Corvair Piet performance report--nose tank sketch (taildrags)
Message 1
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Subject: | Re: Corvair Piet performance report |
Vincent,
Here is what I did. My tank is 18 gal. I am only using gravity feed to the carb,
no fuel pump was required. When I ran the fuel flow test, with the plane at
about a 16 degree angle of attack, there was plenty of head pressure. I dont recall
the actual figures, but it was way better than the 150% of max power fuel
consumption required by the FAR. The useable fuel was also almost the full 18
gallons except for a few ounces. The last fuel flow test was actually done with
48 ounces of fuel and the fuel flow was fine.
I have attached some photos and a dimensioned drawing of the tank. My tank design
followed pretty much what Mike Cuy did, except I did not add in the rear extension.
If I had to do it again I would put in the rear extension that Mike has
as it gives more support to the tank rear. It makes it a little more difficult
to construct the tank, but I think its worth it. If you are following my tank
dimensions, I would make it slightly narrower. My tank is a little tight when
trying to run the fuel shut off, throttle and carb heat cables.
The tank support is two stainless steel straps running fore and aft. These straps
attach to the forward ash piece at the firewall and the shelf behind the front
cockpit instrument panel. This shelf is reinforced with x 4 Douglas fir. There
is a secondary support that goes left and right under the tank, also made
of Douglas fir. Finally there is a top strap that goes across the top bow of
the tank.
The attached photos should give you a good idea of what I did. Also check Mike
Cuys photos on the West Cost Piet website, as that's where I shamelessly plagiarized
my ideas.
Regards,
Rick Schreiber
NX478RS
Porter Co Regional, Valparaiso IN
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=465070#465070
Attachments:
http://forums.matronics.com//files/pietnosetanksketchmike_cuy_372.jpg
http://forums.matronics.com//files/line_drawing_nx478rs_989.jpg
http://forums.matronics.com//files/aimg_0623_188.jpg
http://forums.matronics.com//files/aimg_0397_198.jpg
http://forums.matronics.com//files/a100_2113_102.jpg
Message 2
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Subject: | Corvair Piet performance report--nose tank sketch |
http://www.westcoastpiet.com/images/Mike_Cuy/Image/PietNoseTankSketch.jpg.j
pg
*Glad to hear your nose tank is working out Rick. Love my 17 gallon nose
tank. No header tank, no muss, no lines running from a center section tank
(my center section is all baggage) *
*Mike C. *
On Sat, Jan 14, 2017 at 1:39 PM, Rick Schreiber <lmforge@earthlink.net>
wrote:
> lmforge@earthlink.net>
>
> Vincent,
> Here is what I did. My tank is 18 gal. I am only using gravity feed to th
e
> carb, no fuel pump was required. When I ran the fuel flow test, with the
> plane at about a 16 degree angle of attack, there was plenty of head
> pressure. I don=99t recall the actual figures, but it was way bette
r than the
> 150% of max power fuel consumption required by the FAR. The useable fuel
> was also almost the full 18 gallons except for a few ounces. The last fue
l
> flow test was actually done with 48 ounces of fuel and the fuel flow was
> fine.
> I have attached some photos and a dimensioned drawing of the tank. My tan
k
> design followed pretty much what Mike Cuy did, except I did not add in th
e
> rear extension. If I had to do it again I would put in the rear extension
> that Mike has as it gives more support to the tank rear. It makes it a
> little more difficult to construct the tank, but I think it=99s wor
th it. If
> you are following my tank dimensions, I would make it slightly narrower.
My
> tank is a little tight when trying to run the fuel shut off, throttle and
> carb heat cables.
> The tank support is two stainless steel straps running fore and aft. Thes
e
> straps attach to the forward ash piece at the firewall and the shelf behi
nd
> the front cockpit instrument panel. This shelf is reinforced with =C2=BE
=9Dx 4=9D
> Douglas fir. There is a secondary support that goes left and right under
> the tank, also made of Douglas fir. Finally there is a top strap that goe
s
> across the top bow of the tank.
> The attached photos should give you a good idea of what I did. Also check
> Mike Cuys photos on the West Cost Piet website, as that's where I
> shamelessly plagiarized my ideas.
> Regards,
> Rick Schreiber
> NX478RS
> Porter Co Regional, Valparaiso IN
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=465070#465070
>
>
> Attachments:
>
> http://forums.matronics.com//files/pietnosetanksketchmike_cuy_372.jpg
> http://forums.matronics.com//files/line_drawing_nx478rs_989.jpg
> http://forums.matronics.com//files/aimg_0623_188.jpg
> http://forums.matronics.com//files/aimg_0397_198.jpg
> http://forums.matronics.com//files/a100_2113_102.jpg
>
>
===========
===========
===========
===========
===========
>
>
Message 3
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Subject: | a whole page of Piet sketches---web link below |
For those of you who are newer to the list, here's a page of a few of the
miscellaneous sketches that I've drawn to help others along while building
their
Pietenpol. Scroll down after you get to the page.
The fuel tank sketch/installation is in there along with a bunch of other
sketches---of possible interest.
http://www.westcoastpiet.com/images/Mike_Cuy/Sketches.html
Mike C.
NX48MC
Message 4
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Subject: | Re: Corvair Piet performance report--nose tank sketch |
It really is working out well Mike. As I said, I plagiarized what you
had already done. Putting the rear extension into the shelf area as you
did is a better way to go as it gives more support to the tank. That
area behind the front IP is wasted space anyways. I was just trying to
simplify the tank construction. Until I actually did the fuel flow
testing, I was afraid I would have to use ram air to pressurize the
tank, but fortunately it wasn't necessary. I have taken off now with a
full 18 gal tank and all works well, however that gives me 3 hrs flight
time with a 1/2 hour reserve. So far my longest flight has been 2-1/2
hours. As much as I like flying the Piet, I was ready to land and take a
break at 2-1/2 hours. When I used to hear people say 2 hours was long
enough in a Pietenpol I was wondering what is the problem? I fly over 3
hour legs in my TriPacer all the time with no problem. With a Pietenpol
is it lack of padding in an uncomfortable seat? The noise? The wind
buffet? For me its just like driving a motorcycle for a long distance.
Its the fact that you can never relax like you can in a car, or a more
modern enclosed cockpit aircraft. You have to fly it all the time. Not
that I am complaining, its just a different kind of flying. In all
respects it is more enjoyable than flying the TriPacer, but 17 or 18
gallons of fuel is certainly enough.
Rick Schreiber
NX478RS
Porter Co Regional, Valparaiso IN
On 1/14/2017 6:53 PM, Michael Cuy wrote:
> http://www.westcoastpiet.com/images/Mike_Cuy/Image/PietNoseTankSketch.jpg.jpg
>
> *Glad to hear your nose tank is working out Rick. Love my 17 gallon
> nose tank. No header tank, no muss, no lines running from a center
> section tank (my center section is all baggage) *
> *
> *
> *Mike C. *
>
> On Sat, Jan 14, 2017 at 1:39 PM, Rick Schreiber <lmforge@earthlink.net
> <mailto:lmforge@earthlink.net>> wrote:
>
> <lmforge@earthlink.net <mailto:lmforge@earthlink.net>>
>
> Vincent,
> Here is what I did. My tank is 18 gal. I am only using gravity
> feed to the carb, no fuel pump was required. When I ran the fuel
> flow test, with the plane at about a 16 degree angle of attack,
> there was plenty of head pressure. I dont recall the actual
> figures, but it was way better than the 150% of max power fuel
> consumption required by the FAR. The useable fuel was also almost
> the full 18 gallons except for a few ounces. The last fuel flow
> test was actually done with 48 ounces of fuel and the fuel flow
> was fine.
> I have attached some photos and a dimensioned drawing of the tank.
> My tank design followed pretty much what Mike Cuy did, except I
> did not add in the rear extension. If I had to do it again I would
> put in the rear extension that Mike has as it gives more support
> to the tank rear. It makes it a little more difficult to construct
> the tank, but I think its worth it. If you are following my tank
> dimensions, I would make it slightly narrower. My tank is a little
> tight when trying to run the fuel shut off, throttle and carb heat
> cables.
> The tank support is two stainless steel straps running fore and
> aft. These straps attach to the forward ash piece at the firewall
> and the shelf behind the front cockpit instrument panel. This
> shelf is reinforced with x 4 Douglas fir. There is a secondary
> support that goes left and right under the tank, also made of
> Douglas fir. Finally there is a top strap that goes across the top
> bow of the tank.
> The attached photos should give you a good idea of what I did.
> Also check Mike Cuys photos on the West Cost Piet website, as
> that's where I shamelessly plagiarized my ideas.
> Regards,
> Rick Schreiber
> NX478RS
> Porter Co Regional, Valparaiso IN
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=465070#465070
> <http://forums.matronics.com/viewtopic.php?p=465070#465070>
>
>
> Attachments:
>
> http://forums.matronics.com//files/pietnosetanksketchmike_cuy_372.jpg
> <http://forums.matronics.com//files/pietnosetanksketchmike_cuy_372.jpg>
> http://forums.matronics.com//files/line_drawing_nx478rs_989.jpg
> <http://forums.matronics.com//files/line_drawing_nx478rs_989.jpg>
> http://forums.matronics.com//files/aimg_0623_188.jpg
> <http://forums.matronics.com//files/aimg_0623_188.jpg>
> http://forums.matronics.com//files/aimg_0397_198.jpg
> <http://forums.matronics.com//files/aimg_0397_198.jpg>
> http://forums.matronics.com//files/a100_2113_102.jpg
> <http://forums.matronics.com//files/a100_2113_102.jpg>
>
>
> ===================================
> br> enpol-List" rel="noreferrer"
> target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
> ===================================
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> eferrer" target="_blank">http://forums.matronics.com
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Message 5
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Subject: | Re: Corvair Piet performance report--nose tank sketch |
It works! The 16 gallon nose tank on 41CC is essentially the same as Mike Cuy's
design, with the rear extension, sloping bottom, and how it's fitted out.
As far as flight endurance, I will second what Rick wrote. After about 2 hours
I'm getting antsy, and at 2.5 hours I'm watching the fuel level like a hawk and
ded-reckoning my way to the nearest restroom.
The flight endurance may not be exactly related to cockpit comfort, but I remember
climbing into my flight instructor's Taylorcraft for a flight review a few
years ago. I had never been in a T'Craft before and it felt like climbing into
a big comfortable couch in a big comfortable living room, compared to the rear
cockpit of the Air Camper! Wow, what a difference! Upholstery, enclosed
cockpit, muffled engine noise and air noise... and the T'Craft actually felt something
like a Cessna 206 compared to the Piet.
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power, 72x36 Culver prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=465088#465088
Message 6
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Subject: | Re: Corvair Piet performance report--nose tank sketch |
Also forgot to mention... plan your cable routing before you figure out your fuel
tank. Like others have mentioned, it can get VERY tight getting cables from
the rear cockpit to the engine compartment past the fuel tank, especially since
you can't take a straight line going through the firewall... you have to dodge
around the fuselage upright just before punching out of the firewall going
forward. The small wires are no problem, it's things like the tach cable (mechanical
tach, anyway).
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power, 72x36 Culver prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=465089#465089
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