Original Posted By:----- Original Message ----- =0A =0A jorge =0A lizarraga =0A To:
=EF=BB=0A=0A =0AThanks Jorge. So the tank is vinyl ester resin. =0AApparently the only one=0Athat is fuel proof. The guage is a very uniquely =0Adesigned oil tank one.=0AThe dial and the float assembly have no physical =0Aconnection whatsoever,=0AThe dial pointer and the floatshaft are magnetic. =0AThe hand follows the=0Afloat arm magneticaly=C2-through the dividing =0Awall.=0A=C2-=0AOh, I forgot to mention before and didn't take pics =0Abut the tank has four=0Abaffles in it, two fore and aft and two across. =0AThey are glassed into the=0Abottom but not the top.=0A=C2-=0AClif=0A=0A
Pietenpol-List: Scales
Pietenpol-List: Scales
Original Posted By: "Perry Rhoads"
Question for all those who have finished and are flying your Piets.What did you use for scales in determining your weight and balance?________________________________________________________________________________
Question for all those who have finished and are flying your Piets.What did you use for scales in determining your weight and balance?________________________________________________________________________________
Re: Pietenpol-List: Scales
Original Posted By: "Roman Bukolt"
After recently acquiring Vi Kapler's Piet, I used Ruggles Scales to weight it. They are used by sports car racers for set up. Nothing more than bath scales with mechanical advantage ramps to allow double the weight per scale. Any auto race guy in your area will have these or the much better electronic scales.Perry RhoadsN12939----- Original Message -----
After recently acquiring Vi Kapler's Piet, I used Ruggles Scales to weight it. They are used by sports car racers for set up. Nothing more than bath scales with mechanical advantage ramps to allow double the weight per scale. Any auto race guy in your area will have these or the much better electronic scales.Perry RhoadsN12939----- Original Message -----
Re: Pietenpol-List: Scales
Original Posted By: "Roman Bukolt"
Three calibrated, electronic scales. After doing an initial weighing, rotate the scales to a different location on the plane and see if the weights are the same. This will give you an idea of the scales accuracy.Greg Cardinal----- Original Message -----
Three calibrated, electronic scales. After doing an initial weighing, rotate the scales to a different location on the plane and see if the weights are the same. This will give you an idea of the scales accuracy.Greg Cardinal----- Original Message -----
Re: Pietenpol-List: Re: Bending plywood.exelent
Original Posted By: Dave and Connie
How far away will the compass be from that thing?Reason I ask is that I learned that Duracell alkaline batteries in my glove box in my Cessna 180 have a profound effect on the compass reading.David Paule The guage is a very uniquely designed oil tank one. The dial and the float assembly have no physical connection whatsoever, The dial pointer and the floatshaft are magnetic. The hand follows the float arm magneticaly through the dividing wall.------------------------------------------------------------------ - ----------------------------------------------------------------------------________________________________________________________________________________Date: Sat, 07 Nov 2009 10:55:00 -0500
How far away will the compass be from that thing?Reason I ask is that I learned that Duracell alkaline batteries in my glove box in my Cessna 180 have a profound effect on the compass reading.David Paule The guage is a very uniquely designed oil tank one. The dial and the float assembly have no physical connection whatsoever, The dial pointer and the floatshaft are magnetic. The hand follows the float arm magneticaly through the dividing wall.------------------------------------------------------------------ - ----------------------------------------------------------------------------________________________________________________________________________________Date: Sat, 07 Nov 2009 10:55:00 -0500
Re: Pietenpol-List: Vi Kapler Hinges
Original Posted By: "Dave and Connie"
Vitalis Kapler507-288-3322----- Original Message -----
Vitalis Kapler507-288-3322----- Original Message -----
Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
Original Posted By: "Don Emch"
I was fabricating the flying strut fittings last night and discovered AFTER I welded them that the width as shown on the plans appears to be incorrect. Here is my reasoning.The small drawing of the Flying Strut Fitting, shown at the bottom of sheet Drawing NO. 5 (the sheet with the wing plans on it), shows the top plate to be 1-inch by 1-inch. On the wing spar drawing there are 1/8-inch plywood plates called for on both sides of the spar at the location of the fitting. These are also shown on the detail drawing near the upper right corner of these sheet.As I interpret these drawings the 1/8-inch plates should be UNDER the fitting to reinforce the spar at this location. This would add 1/4-inch (1/8 +1/8 = 1/4) to the thickness of the spar making 1 1/4-inch needed for the top plate not the 1-inch shown on the plans. Or the plans can be interpreted differently. The Flying Strut fitting drawing does not show the plywood under the fitting. It could be assumed that a 1-inch wide strip of 1/8-inch plywood goes on the SIDE of the fitting as shown on spar drawing. This would make the 1-inch dimension correct.I don't know what is the right interpretation but I think the plywood under the fitting is the best interpretation and will be remaking the fittings. Looking at what others have done would suggest this is the typical way to do it.http://westcoastpiet.com/images/Jack%20 ... gSomething I also discovered was several had decided to not weld the two straps together at all. http://westcoastpiet.com/images/Santiag ... 2.jpgChris TracySacramento, CAWestCoastPiet.com________________________________________________________________________________Subject: Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
I was fabricating the flying strut fittings last night and discovered AFTER I welded them that the width as shown on the plans appears to be incorrect. Here is my reasoning.The small drawing of the Flying Strut Fitting, shown at the bottom of sheet Drawing NO. 5 (the sheet with the wing plans on it), shows the top plate to be 1-inch by 1-inch. On the wing spar drawing there are 1/8-inch plywood plates called for on both sides of the spar at the location of the fitting. These are also shown on the detail drawing near the upper right corner of these sheet.As I interpret these drawings the 1/8-inch plates should be UNDER the fitting to reinforce the spar at this location. This would add 1/4-inch (1/8 +1/8 = 1/4) to the thickness of the spar making 1 1/4-inch needed for the top plate not the 1-inch shown on the plans. Or the plans can be interpreted differently. The Flying Strut fitting drawing does not show the plywood under the fitting. It could be assumed that a 1-inch wide strip of 1/8-inch plywood goes on the SIDE of the fitting as shown on spar drawing. This would make the 1-inch dimension correct.I don't know what is the right interpretation but I think the plywood under the fitting is the best interpretation and will be remaking the fittings. Looking at what others have done would suggest this is the typical way to do it.http://westcoastpiet.com/images/Jack%20 ... gSomething I also discovered was several had decided to not weld the two straps together at all. http://westcoastpiet.com/images/Santiag ... 2.jpgChris TracySacramento, CAWestCoastPiet.com________________________________________________________________________________Subject: Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
Original Posted By: "Bill Church"
Chris,I believe some will interpret it as no plywood under the fitting, just on the sides.That may have been what Mr. Pietenpol intended too. In working with woodspars and wood wings in general, I've found that it is common practice to placeplywood under the fitting. I made that piece an 1 1/4" and welded them togetherthen slid it over the plywood. Made for a 1 1/4" wide gap in the fitting.I'm sure they are both ways, but that makes the most sense to me.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
Chris,I believe some will interpret it as no plywood under the fitting, just on the sides.That may have been what Mr. Pietenpol intended too. In working with woodspars and wood wings in general, I've found that it is common practice to placeplywood under the fitting. I made that piece an 1 1/4" and welded them togetherthen slid it over the plywood. Made for a 1 1/4" wide gap in the fitting.I'm sure they are both ways, but that makes the most sense to me.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
Original Posted By: "Richard Schreiber"
Chris,Funny that this hasn't been noticed before (at least I don't recall it being discussed).At first glance I thought that maybe the plywood plates were just mountedalongside the strut fittings, even though it didn't seem to make sense.The cross-section detail thru the spar down at the bottom of the drawing showsthe fitting directly against the 1" thick spar, so it would appear that the plywoodwould not be under the fitting. But that doesn't seem to make sense, becausea plywood reinforcement like that would likely be there to help spread outthe concentrated load that the fitting would put on the spar. And then I noticedthe assembly sketch in the upper right quadrant of the drawing, which fairlyclearly shows the fitting ON TOP of the plywood (see attached clip). Thisjust makes more sense in terms of building practice, so my conclusion would bethat the 1" dimension was an oversight, and should have been 1 1/4" to incorporatethe two plywood plates.Probably since most builders today (I think) use the solid 3/4" spar, as opposedto the routed 1" spar, the "error" is not an issue, since 3/4" + 1/8" + 1/8"= 1", so it would work fine with the solid 3/4" spar.Having said all that, it would probably work either way, but the preferred methodwould be with the plywood under the fitting.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/stru ... __________
Chris,Funny that this hasn't been noticed before (at least I don't recall it being discussed).At first glance I thought that maybe the plywood plates were just mountedalongside the strut fittings, even though it didn't seem to make sense.The cross-section detail thru the spar down at the bottom of the drawing showsthe fitting directly against the 1" thick spar, so it would appear that the plywoodwould not be under the fitting. But that doesn't seem to make sense, becausea plywood reinforcement like that would likely be there to help spread outthe concentrated load that the fitting would put on the spar. And then I noticedthe assembly sketch in the upper right quadrant of the drawing, which fairlyclearly shows the fitting ON TOP of the plywood (see attached clip). Thisjust makes more sense in terms of building practice, so my conclusion would bethat the 1" dimension was an oversight, and should have been 1 1/4" to incorporatethe two plywood plates.Probably since most builders today (I think) use the solid 3/4" spar, as opposedto the routed 1" spar, the "error" is not an issue, since 3/4" + 1/8" + 1/8"= 1", so it would work fine with the solid 3/4" spar.Having said all that, it would probably work either way, but the preferred methodwould be with the plywood under the fitting.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/stru ... __________
RE: Pietenpol-List: Scales
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I first used my bathroom scales, then after moving it to the airport I usedthe FBO's aircraft scales, and suddenly my plane gained almost 100 lbs.Jack PhillipsNX899JPRaleigh, NC-----Original Message-----
I first used my bathroom scales, then after moving it to the airport I usedthe FBO's aircraft scales, and suddenly my plane gained almost 100 lbs.Jack PhillipsNX899JPRaleigh, NC-----Original Message-----
RE: Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
Original Posted By: owner-pietenpol-list-server(at)matronics.com
All the loading on the spars comes through the bolts bearing in shear (sideloading) on the wood. Adding the plywood is prudent. Not only does itincrease the shear area, it also adds harder wood than the spruce of thespar (at least it does if you use birch plywood - I don't know if mahoganyor any of the non-aircraft grade plywoods are harder than spruce) to helpprevent the bolts elongating the holes.The strap across the top, on the other hand, does nothing to add anythingbut weight and difficulty. If the bolts have sheared through the spar, thatlittle strap will not keep the spar from failing.Jack PhillipsNX899JPRaleigh, NC-----Original Message-----
All the loading on the spars comes through the bolts bearing in shear (sideloading) on the wood. Adding the plywood is prudent. Not only does itincrease the shear area, it also adds harder wood than the spruce of thespar (at least it does if you use birch plywood - I don't know if mahoganyor any of the non-aircraft grade plywoods are harder than spruce) to helpprevent the bolts elongating the holes.The strap across the top, on the other hand, does nothing to add anythingbut weight and difficulty. If the bolts have sheared through the spar, thatlittle strap will not keep the spar from failing.Jack PhillipsNX899JPRaleigh, NC-----Original Message-----
Re: Pietenpol-List: Scales
Original Posted By: hvandervoo(at)aol.com
Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
Original Posted By: "K5YAC"
I got a chance yesterday to go out formation flying with a friend in his T-6. Surprisingly quiet in the rear seat compared to that sharp prop sound on the ground. We are all going to have to work on tightening up our formations for Brodhead (just kidding, of course). Those guys practice formations weekly and are very good. That plane is quite simple. If you take away the Manifold Press gauge and the landing gear indicators there's not much different than a Piet panel.Dick N.________________________________________________________________________________Subject: Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
I got a chance yesterday to go out formation flying with a friend in his T-6. Surprisingly quiet in the rear seat compared to that sharp prop sound on the ground. We are all going to have to work on tightening up our formations for Brodhead (just kidding, of course). Those guys practice formations weekly and are very good. That plane is quite simple. If you take away the Manifold Press gauge and the landing gear indicators there's not much different than a Piet panel.Dick N.________________________________________________________________________________Subject: Pietenpol-List: Re: Upper Flying Strut Fitting, Possibe Plans Error
Original Posted By: "Clif Dawson"
I'm not even planning to utilize the top strap. I agree with Jack that it justcomplicates things. I have seen others that just round off that end of the fittingand bolt it on. That's my plan.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
I'm not even planning to utilize the top strap. I agree with Jack that it justcomplicates things. I have seen others that just round off that end of the fittingand bolt it on. That's my plan.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: Pietenpol-List: Re: Bending plywood.exelent
Original Posted By: jorge lizarraga
Three feet. And the magnet system is only enough to move a dial weighinga hundredth of an ounce, maybe. So we'll see.Clif How far away will the compass be from that thing? Reason I ask is that I learned that Duracell alkaline batteries in my glove box in my Cessna 180 have a profound effect on the compass reading. David Paule________________________________________________________________________________Date: Sat, 7 Nov 2009 21:50:11 -0800 (PST)
Three feet. And the magnet system is only enough to move a dial weighinga hundredth of an ounce, maybe. So we'll see.Clif How far away will the compass be from that thing? Reason I ask is that I learned that Duracell alkaline batteries in my glove box in my Cessna 180 have a profound effect on the compass reading. David Paule________________________________________________________________________________Date: Sat, 7 Nov 2009 21:50:11 -0800 (PST)