Original Posted By: Michael D Cuy
O.K., here's the deal:I've got the ribs glued to the spars on my right wing. BHP's instructions indifferent Flying & Glider Manuals say in one place to put on the leading andtrailing edges before you make up the drag and anti-drag wires. In anotherplace they say to make up the wires first. Are there any special problems in lining up and "trueing" the wings? I amleaning toward glueing up the le and te first.John________________________________________________________________________________
Pietenpol-List: Wings
Pietenpol-List: Re: Wings
Original Posted By: Graham Hansen
John & Group, Please correct this advice if in error, but the sequence I used was slide the ribs on, make up the drag/anti dragcables, tighten them to square the wing using trammel or whateverworks for you, slide the ribs over in position w/glue and nail inplace, (and you may have to slide some ribs left or right from their intended position to clear the X bracing cables.) let cure, long sanding block to even up each rib to the other,then le and te install. Don't do like I did and permanently attach thewing tip bow before you slide in the aileron spars !! Not a prettydiscovery. The saw horses should be level, but you can't believehow much twist the wings have even right up to cover. The wingstrut adjustments should take up any minor errors built into the wing.Mike C. ________________________________________________________________________________
John & Group, Please correct this advice if in error, but the sequence I used was slide the ribs on, make up the drag/anti dragcables, tighten them to square the wing using trammel or whateverworks for you, slide the ribs over in position w/glue and nail inplace, (and you may have to slide some ribs left or right from their intended position to clear the X bracing cables.) let cure, long sanding block to even up each rib to the other,then le and te install. Don't do like I did and permanently attach thewing tip bow before you slide in the aileron spars !! Not a prettydiscovery. The saw horses should be level, but you can't believehow much twist the wings have even right up to cover. The wingstrut adjustments should take up any minor errors built into the wing.Mike C. ________________________________________________________________________________
Pietenpol-List: Re: Wings
Original Posted By:> Michael D Cuy
Sound advice, Michael. This is the accepted procedure for any wing of thistype using drag and anti-drag wires or tie rods. Most books on aviationmehanics(preferably older ones) will also give details on trammeling, or squaringup , thedrag/anti-drag truss bays. Always start this process at the root bay andproceedbay by bay toward the tip. It is not difficult to do, but must be donecarefully. If a3-piece wing is used incorporating a center section, the wing panel must beattached to the center section before beginning the trammelling procedure. A trammelbar gives the most accurate results, but don't buy an expensive set oftrammel points;borrow, rent, or make, a set because you won't use them very often.Cheers,Graham Hansen (Please note my new E-mail address...the old one is stillin effect also.) ---------
Sound advice, Michael. This is the accepted procedure for any wing of thistype using drag and anti-drag wires or tie rods. Most books on aviationmehanics(preferably older ones) will also give details on trammeling, or squaringup , thedrag/anti-drag truss bays. Always start this process at the root bay andproceedbay by bay toward the tip. It is not difficult to do, but must be donecarefully. If a3-piece wing is used incorporating a center section, the wing panel must beattached to the center section before beginning the trammelling procedure. A trammelbar gives the most accurate results, but don't buy an expensive set oftrammel points;borrow, rent, or make, a set because you won't use them very often.Cheers,Graham Hansen (Please note my new E-mail address...the old one is stillin effect also.) ---------
Pietenpol-List: Re: Fw:Wings
Original Posted By: D Slade
John,The reason I said I would have built a one piece wing is that it wouldhave been lighter and I have the space to build one. We also have a cartrailer that would haul one too, but I doubt that I will ever remove thewing from the aircraft because it is really a pain.Craig________________________________________________________________________________
John,The reason I said I would have built a one piece wing is that it wouldhave been lighter and I have the space to build one. We also have a cartrailer that would haul one too, but I doubt that I will ever remove thewing from the aircraft because it is really a pain.Craig________________________________________________________________________________
Pietenpol-List: Fw:Wings
Original Posted By: jkahn(at)picasso.dehavilland.ca (John Kahn)
Why have I read that you are better off not changing the plane andsticking with the plans with regard to the wing? Someone wrote that ifthey were going to do it over they would have built a one piece insteadof the three piece. Why might that be? Is the one piece wingpermanently fixed when installed or can it possible be removed fortransporting? If it is fixed is it difficult to get it down the road ifneed be?Thanks, Brent Reed Kent, WA.________________________________________________________________________________
Why have I read that you are better off not changing the plane andsticking with the plans with regard to the wing? Someone wrote that ifthey were going to do it over they would have built a one piece insteadof the three piece. Why might that be? Is the one piece wingpermanently fixed when installed or can it possible be removed fortransporting? If it is fixed is it difficult to get it down the road ifneed be?Thanks, Brent Reed Kent, WA.________________________________________________________________________________
Pietenpol-List: Re: Fw:Wings
Original Posted By: "Craig R. Lawler"
> Why have I read that you are better off not changing the plane and> sticking with the plans with regard to the wing? Someone wrote that if> they were going to do it over they would have built a one piece instead> of the three piece. Why might that be? Is the one piece wing> permanently fixed when installed or can it possible be removed for> transporting? If it is fixed is it difficult to get it down the road if> need be?There is a picture in the Flying and Glider manual of a Piet built in the30s with a _two_ piece wing, which would seem to be the most efficientcompromise between weight saving and ease of dissasembly. It uses A framecabanes with one joint at the middle. If you were putting the fuel tankin the fuselage it would be little trouble. I suspect the reason itisn't done more is that it changes the look of the airplane quite a lot andI don't think there are any plans for that type of modification.johnk________________________________________________________________________________
> Why have I read that you are better off not changing the plane and> sticking with the plans with regard to the wing? Someone wrote that if> they were going to do it over they would have built a one piece instead> of the three piece. Why might that be? Is the one piece wing> permanently fixed when installed or can it possible be removed for> transporting? If it is fixed is it difficult to get it down the road if> need be?There is a picture in the Flying and Glider manual of a Piet built in the30s with a _two_ piece wing, which would seem to be the most efficientcompromise between weight saving and ease of dissasembly. It uses A framecabanes with one joint at the middle. If you were putting the fuel tankin the fuselage it would be little trouble. I suspect the reason itisn't done more is that it changes the look of the airplane quite a lot andI don't think there are any plans for that type of modification.johnk________________________________________________________________________________
Pietenpol-List: RE: Wings
Original Posted By: perry
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Pietenpol-List: Wings
Original Posted By: duprey(at)mailexcite.com
Phil wrote:........I was just looking for a little insightfrom someone who has taken their wings off once in a while.phil >>There was a piece in the newsletter ( BPA ) a while back about a PietinEngland with quick detach wings. Maybe Grant can give you the reference.Removing the the wings of a Piet is a major task.Mike B ( Piet N687MB )________________________________________________________________________________
Phil wrote:........I was just looking for a little insightfrom someone who has taken their wings off once in a while.phil >>There was a piece in the newsletter ( BPA ) a while back about a PietinEngland with quick detach wings. Maybe Grant can give you the reference.Removing the the wings of a Piet is a major task.Mike B ( Piet N687MB )________________________________________________________________________________
Pietenpol-List: Re: Wings
Original Posted By: Eli or Robert or Teresa Bozeman
>England with quick detach wings. Maybe Grant can give you the reference.>Removing the the wings of a Piet is a major task.>>Mike B ( Piet N687MB )Phil- What Mike B. says here is quite true. You'd have to do somehard thinking to redsign some things prior to building to make this worth your while. I'd say even with practice it would take at leastone hour each operation......and that's being optomistic. Mike C. (PS- but don't let that stop you from scribbling on a few________________________________________________________________________________
>England with quick detach wings. Maybe Grant can give you the reference.>Removing the the wings of a Piet is a major task.>>Mike B ( Piet N687MB )Phil- What Mike B. says here is quite true. You'd have to do somehard thinking to redsign some things prior to building to make this worth your while. I'd say even with practice it would take at leastone hour each operation......and that's being optomistic. Mike C. (PS- but don't let that stop you from scribbling on a few________________________________________________________________________________
> Re: Wings
Original Posted By: Emelita W
> > > John & Group, Please correct this advice if in error, but the > sequence I used was slide the ribs on, make up the drag/anti drag> cables, tighten them to square the wing using trammel or whatever> works for you, slide the ribs over in position w/glue and nail in> place, (and you may have to slide some ribs left or right from their > intended position to clear the X bracing cables.)> let cure, long sanding block to even up each rib to the other,> then le and te install. Don't do like I did and permanently attach the> wing tip bow before you slide in the aileron spars !! Not a pretty> discovery. The saw horses should be level, but you can't believe> how much twist the wings have even right up to cover. The wing> strut adjustments should take up any minor errors built into the wing.> Mike C. ________________________________________________________________________________
> > > John & Group, Please correct this advice if in error, but the > sequence I used was slide the ribs on, make up the drag/anti drag> cables, tighten them to square the wing using trammel or whatever> works for you, slide the ribs over in position w/glue and nail in> place, (and you may have to slide some ribs left or right from their > intended position to clear the X bracing cables.)> let cure, long sanding block to even up each rib to the other,> then le and te install. Don't do like I did and permanently attach the> wing tip bow before you slide in the aileron spars !! Not a pretty> discovery. The saw horses should be level, but you can't believe> how much twist the wings have even right up to cover. The wing> strut adjustments should take up any minor errors built into the wing.> Mike C. ________________________________________________________________________________