Original Posted By: "Richard Schreiber"
Subject: Pietenpol-List: Richard's sloping nose tank sumpRichard,You described to a tee how I designed the shape of my nose tank. (photo attached and more sketches canbe found at: http://www.westcoastpiet.com/design_sketches.htmI followed Bingelis's fuel tank design advice and used his minimum fuel flow (at the carb fuel supply hose)chart for my engine. I placed the airplane on an earthen barn ramp to simulate climb angle and the chartBingelis has shows the amount of fuel (gravity flow) needed at full takeoff power for your horsepower.I used a graduated plastic Tupperware-like translucent Kool Aid type pitcher/container and my second handon my watch to time the volume of fuel flowing at various quantities of fuel remaining in the tank until themagic number fell below the "useable fuel" flow volume per unit time.My fuel flow experiment showed that of my 17 gallons in the nose tank that the unusable amount was 1.5gallons remaining so essentially about 15 gallons were usable. Keep in mind that at the 1.5 gallons offuel remaining and my weight being 200 pounds creates a CG condition that is pretty tail heavy(not beyond limits but requiring a decent amount of forward stick to maintain level flight)Mike C.[cid:image003.jpg(at)01CA7970.39236740]________________________________________________________________________________
Pietenpol-List: Richard's sloping nose tank sump
RE: Pietenpol-List: Aluminum prices....
Original Posted By:> Jim Markle
Jim:Apparently the price went up just after I ordered yesterday. When I checkedyesterday evening it was up to about $19, now I see its almost $23. Rick> [Original Message]
Jim:Apparently the price went up just after I ordered yesterday. When I checkedyesterday evening it was up to about $19, now I see its almost $23. Rick> [Original Message]
RE: Pietenpol-List: Richard's sloping nose tank sump
Original Posted By: Cuy, Michael D. (GRC-RXD0)[ASRC Aerospace Corporation]
Mike,I basically followed your design, except I do not have the rear extension. SinceI originally was going to use a wing tank, I put in the forward bow to supportthe cowling (see the attached photo). With the bow in place there was no wayI could get the extension on the tank to fit, unless I made the tank smalleror cut off the bow. I am using two stainless support straps for and aft as youshow, plus an additional strap across the top. In a good negative g jolt I don'twant to just rely on the cowling and the fuel line to hold the tank in place.I will try and place the tank as high as possible to get as much fuel pressureas I can, In addition I will put a forward facing tube in the fuel cap to tryand get a little ram air pressure.My welder wants me to try and flange the rounded top of the front and back of thetank. Since I am going to use a wood form to do the flanging I'll practicesome when my aluminum comes in. Since I am going with 0.05" aluminum, flangingthe top may be a problem.Rick S----- Original Message -----
Mike,I basically followed your design, except I do not have the rear extension. SinceI originally was going to use a wing tank, I put in the forward bow to supportthe cowling (see the attached photo). With the bow in place there was no wayI could get the extension on the tank to fit, unless I made the tank smalleror cut off the bow. I am using two stainless support straps for and aft as youshow, plus an additional strap across the top. In a good negative g jolt I don'twant to just rely on the cowling and the fuel line to hold the tank in place.I will try and place the tank as high as possible to get as much fuel pressureas I can, In addition I will put a forward facing tube in the fuel cap to tryand get a little ram air pressure.My welder wants me to try and flange the rounded top of the front and back of thetank. Since I am going to use a wood form to do the flanging I'll practicesome when my aluminum comes in. Since I am going with 0.05" aluminum, flangingthe top may be a problem.Rick S----- Original Message -----
Re: Pietenpol-List: Richard's sloping nose tank sump
Original Posted By: Rick Holland
Subject: Re: Pietenpol-List: Richard's sloping nose tank sump
Subject: Re: Pietenpol-List: Richard's sloping nose tank sump
> ** Pietenpol-List: Richard's sloping nose tank sump
Original Posted By: Jim
> Pietenpol-List: Aluminum prices....
Original Posted By:> Richard Schreiber
> Subject: Pietenpol-List: Aluminum prices....>>> Hey Richard,>> I bought some .050 from them also but didn't pay $16 for the 24X48 (butwould LIKE to!)...>> Where on the onlinemetals.com site did you find it for $16?>> Thanks>>> ----- Original Message ----->
> Subject: Pietenpol-List: Aluminum prices....>>> Hey Richard,>> I bought some .050 from them also but didn't pay $16 for the 24X48 (butwould LIKE to!)...>> Where on the onlinemetals.com site did you find it for $16?>> Thanks>>> ----- Original Message ----->