Pietenpol-List Digest Archive

Sat 01/14/17


Total Messages Posted: 6



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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    Time: 10:40:21 AM PST US
    Subject: Re: Corvair Piet performance report
    From: "Rick Schreiber" <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 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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    Time: 04:54:43 PM PST US
    From: Michael Cuy <michaelcuy1@gmail.com>
    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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    Time: 05:00:40 PM PST US
    From: Michael Cuy <michaelcuy1@gmail.com>
    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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    Time: 06:03:10 PM PST US
    Subject: Re: Corvair Piet performance report--nose tank sketch
    From: Richard Schreiber <lmforge@earthlink.net>
    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 > =================================== > FORUMS - > eferrer" target="_blank">http://forums.matronics.com > =================================== > WIKI - > errer" target="_blank">http://wiki.matronics.com > =================================== > b Site - > -Matt Dralle, List Admin. > rel="noreferrer" target="_blank">http://www.matronics.com/contribution > =================================== > >


    Message 5


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    Time: 07:42:43 PM PST US
    Subject: Re: Corvair Piet performance report--nose tank sketch
    From: "taildrags" <taildrags@hotmail.com>
    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 &quot;Scout&quot; 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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    Time: 07:49:26 PM PST US
    Subject: Re: Corvair Piet performance report--nose tank sketch
    From: "taildrags" <taildrags@hotmail.com>
    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 &quot;Scout&quot; A75 power, 72x36 Culver prop Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465089#465089




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