Original Posted By: John Duprey
Hi I live in South africa and own and fly 2 totally diferent AirCampers.One is a Geager with a C90 Wood construction and the other is a metal tubeAircamperwith an O200- I didnt build the planes and have no details on them or anyplans.The O200 Piet. has a nasty habit of dropping its tailwheel on before themain wheels,this starts up a bounce from the tail wheel to the mains that just getsworse untill I have totake power and go around-I usually have to wheel land this one-The GreagerPiet 3 pointsvery well.I measured the angle of the elavator in the full up position andfound thatthe metal tube Piets elavator moves up about 14 deg. more than the otherone.Can anyone offer any advise on the problem and what should the elavatortravel be ?Any help apreciatedRegards Doug ReeveJohannesburg________________________________________________________________________________Date: Mon, 19 Jun 2000 20:22:27 -0400
Pietenpol-List: Elavators
Re: Pietenpol-List: Elavators
Original Posted By: "Rodger & Betty Childs"
Subject: Re: Pietenpol-List: Elavators>>>I can imagine that with an additional six feet on the wing, that the>tail may be stalling while the wing still has sufficient lift to do>its job. Also, I have forgotten whether ground effect is related to>the width or the span of the wing. If it's span, then you have even>more boost to the wing lift while the tail is running out of air to>keep things balanced. Is only the wing span increased or are there>other modifications from the basic design?>>Mike Bell>Columbia, SC>>________________________________________________________________________________
Subject: Re: Pietenpol-List: Elavators>>>I can imagine that with an additional six feet on the wing, that the>tail may be stalling while the wing still has sufficient lift to do>its job. Also, I have forgotten whether ground effect is related to>the width or the span of the wing. If it's span, then you have even>more boost to the wing lift while the tail is running out of air to>keep things balanced. Is only the wing span increased or are there>other modifications from the basic design?>>Mike Bell>Columbia, SC>>________________________________________________________________________________
Re: Pietenpol-List: Elavators
Original Posted By: "Mike Bell"
Hi ,I own and fly A Piet with dihedral and one with out I cant tell mutchbetween them-Both have adverse alereron yaw at low speeds-As far as looks go I think itis apersonel choice-Both my Piets are GOOD LOOKING.Regards Doug ReeveJohannesburg________________________________________________________________________________Subject: Re: Pietenpol-List: Elavators
Hi ,I own and fly A Piet with dihedral and one with out I cant tell mutchbetween them-Both have adverse alereron yaw at low speeds-As far as looks go I think itis apersonel choice-Both my Piets are GOOD LOOKING.Regards Doug ReeveJohannesburg________________________________________________________________________________Subject: Re: Pietenpol-List: Elavators
Re: Pietenpol-List: Elavators
Original Posted By: "Redeye"
Thanx all of you for responding ,I have redone the weight and balance forboth planes(What a mission scales and all )and have found that the O200 Piet (The onethats drops its tail)has a forward C of G ,)O200 starter ,generator and batery causing it Imsure. The plane weighs462 kg total empty.The Greager Piets C of G is fine.I couldnt measure theincidence anglesas I m not to sure how to go about it or what equipment is needed so I amstill in the dark as to why it dropsthe tail on 3 point landings.Does anyone know what the elavator travelshould be ?One other thing the O 200 Piets wing is about six feet longer than theGreager and anotherPiet at our flying club but I dont thnk this would cause the tail to dropMy conclusion is that it must be the elavator travel and will fit some sortof stop when I havefound out where to fit it.Regards Doug ReeveJohannesburg________________________________________________________________________________
Thanx all of you for responding ,I have redone the weight and balance forboth planes(What a mission scales and all )and have found that the O200 Piet (The onethats drops its tail)has a forward C of G ,)O200 starter ,generator and batery causing it Imsure. The plane weighs462 kg total empty.The Greager Piets C of G is fine.I couldnt measure theincidence anglesas I m not to sure how to go about it or what equipment is needed so I amstill in the dark as to why it dropsthe tail on 3 point landings.Does anyone know what the elavator travelshould be ?One other thing the O 200 Piets wing is about six feet longer than theGreager and anotherPiet at our flying club but I dont thnk this would cause the tail to dropMy conclusion is that it must be the elavator travel and will fit some sortof stop when I havefound out where to fit it.Regards Doug ReeveJohannesburg________________________________________________________________________________
Original Posted By: "Redeye"
10:49:40 AMI can imagine that with an additional six feet on the wing, that thetail may be stalling while the wing still has sufficient lift to doits job. Also, I have forgotten whether ground effect is related tothe width or the span of the wing. If it's span, then you have evenmore boost to the wing lift while the tail is running out of air tokeep things balanced. Is only the wing span increased or are thereother modifications from the basic design?Mike BellColumbia, SC________________________________________________________________________________
10:49:40 AMI can imagine that with an additional six feet on the wing, that thetail may be stalling while the wing still has sufficient lift to doits job. Also, I have forgotten whether ground effect is related tothe width or the span of the wing. If it's span, then you have evenmore boost to the wing lift while the tail is running out of air tokeep things balanced. Is only the wing span increased or are thereother modifications from the basic design?Mike BellColumbia, SC________________________________________________________________________________
Re: Pietenpol-List: Elavators
Original Posted By: Mike Bell
From what I can find out the original builder first buit a one piece wingand found theclimb performance poor so he cut it in half and built a new centre sectionfor a 3 piecewing and added the two halves of the one piece wing-so the span only hasbeen increased bya centre section length.Your comments make a lot of sense 1st positve thingthat come out of thistrouble is how do I check and whats the cure?Thanx for the inputDoug ReevePS Our airfield is at 5500 feet AGL on on a hot day in Africa the QNH canreach 8000 feet equiv.The long wing Piet climbs far better than the Greager-----Original Message-----
From what I can find out the original builder first buit a one piece wingand found theclimb performance poor so he cut it in half and built a new centre sectionfor a 3 piecewing and added the two halves of the one piece wing-so the span only hasbeen increased bya centre section length.Your comments make a lot of sense 1st positve thingthat come out of thistrouble is how do I check and whats the cure?Thanx for the inputDoug ReevePS Our airfield is at 5500 feet AGL on on a hot day in Africa the QNH canreach 8000 feet equiv.The long wing Piet climbs far better than the Greager-----Original Message-----
Re: Pietenpol-List: Elavators
Original Posted By: jared wilkinson