Pietenpol-List: Grassroots 2009
Posted: Wed Aug 05, 2009 7:04 pm
Original Posted By: "skybachs"
If they re-stitched the wing, then the buckling fabric is a simple side-affect.I would undo/redo those stitches...maybe a touch of heat from a heatgun whilethe stitches were out would help as well.Static port: if you move the static port to the back of the panel by removing thestatic line and plugging, the low pressure in the cockpit area will give youfalse readings. Try lowering the pitot/static tube to create more room fromthe bottom of the wing. I put a bushing in front of my static port with a setscrew so I could slide it fore and aft from the static port until I got accuratereadings.Warped stab can be tweaked with cable adjustments of course, but a warped elevatoris a cosmetic problem. Adding another hinge (or heck, a piano hinge full span)might help....and you'd get your gap seal to boot.Don't sweat the cabanes: all your wb adjustments will be with weight added/subtractedaround the plane.If she's flying nose heavy or light but the wb is good, there are plenty of thingsto adjust in the rigging and spring/bungees to add to the bellcrank or thestick itself to help it trim out.If I had known you were flying by, I would've invited you to stop by the Piet Factory(or Brassroots as they're calling it) and done a once-over.Rob--------NX29NX, C65, Hegy prop, Blue/Cream flying!NX31TM, C85-12, GN-1, 90% done, Red/CreamNX30NX, Corvair, on gear, wings/tail doneNX31NX, Hatz CB-1, O-320B, on gear, ribs doneRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Grassroots 2009
If they re-stitched the wing, then the buckling fabric is a simple side-affect.I would undo/redo those stitches...maybe a touch of heat from a heatgun whilethe stitches were out would help as well.Static port: if you move the static port to the back of the panel by removing thestatic line and plugging, the low pressure in the cockpit area will give youfalse readings. Try lowering the pitot/static tube to create more room fromthe bottom of the wing. I put a bushing in front of my static port with a setscrew so I could slide it fore and aft from the static port until I got accuratereadings.Warped stab can be tweaked with cable adjustments of course, but a warped elevatoris a cosmetic problem. Adding another hinge (or heck, a piano hinge full span)might help....and you'd get your gap seal to boot.Don't sweat the cabanes: all your wb adjustments will be with weight added/subtractedaround the plane.If she's flying nose heavy or light but the wb is good, there are plenty of thingsto adjust in the rigging and spring/bungees to add to the bellcrank or thestick itself to help it trim out.If I had known you were flying by, I would've invited you to stop by the Piet Factory(or Brassroots as they're calling it) and done a once-over.Rob--------NX29NX, C65, Hegy prop, Blue/Cream flying!NX31TM, C85-12, GN-1, 90% done, Red/CreamNX30NX, Corvair, on gear, wings/tail doneNX31NX, Hatz CB-1, O-320B, on gear, ribs doneRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Grassroots 2009