Original Posted By: Dan Yocum
Speaking of exhaust gaskets:I have lost, on more than one occasion, some of those brass exhaust hold-on nuts. Is there any kind of goo that can be put on those threads to keep those nuts on there in that very hot location?Dan HelsperPuryear, TN________________________________________________________________________________Date: Wed, 07 Dec 2011 12:50:46 -0600
Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Original Posted By: Andrew Eldredge
Subject: Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Subject: Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Original Posted By: Ryan Mueller
Subject: Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Subject: Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Original Posted By: Dan Yocum
Well, I thought I did. Dan, I didn't think about the different expansion rates as a method of security. I will make sure in the future. Also, I'll put on a bit-o-rtv just for good luck.Dan HelsperPuryear, TN-----Original Message-----
Well, I thought I did. Dan, I didn't think about the different expansion rates as a method of security. I will make sure in the future. Also, I'll put on a bit-o-rtv just for good luck.Dan HelsperPuryear, TN-----Original Message-----
Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Original Posted By: Andrew Eldredge
Subject: Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Subject: Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
RE: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Perhaps they are cadmium plated, which has a golden color. They'd better besteel. Are they magnetic?Jack PhillipsNX899JPSmith Mountain Lake, Virginia _____
Perhaps they are cadmium plated, which has a golden color. They'd better besteel. Are they magnetic?Jack PhillipsNX899JPSmith Mountain Lake, Virginia _____
Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Original Posted By: Andrew Eldredge
Finally got a set of scales and weighed the Piet. The goal is to determine ifthe CG would move too far forward when my 180lb gets replaced by my son's 130lbsto fly it from the back with me in the front.I was told that the front seat essentially doesn't change the cg at all, whichseems to be the case.Anyway, here's what I found and am curious if others have had similar results (asthis is the FIRST time I've ever done weight and balance).Because it was practical, rather than do empty weight and balance and then allthe additives, we just weighed it in the various configurations.We propped the plane up level, that is the top longeron of the fuse parallel tothe ground, which was essentially level (using a simple bubble level) insidea concrete floor hangar.I'm using the leading edge as the reference point. The mains are 4" back, thetailwheel is 165.5" back from there. I measured straight to the ground, withthe plane propped level as described (using a plumb bob to transfer the leadingedge and tailwheel points).Empty, the plane is 810 lbs, ready to fly minus crew. I'm 180, Scott is 130, sogross is 1120.With Scott in the front and me in the back, there's 100lbs on the tail, and 1020on the mains. So: [(100 lbs x 165.5 in) + (1020 lbs x 4 in)] / 1120 lbs = 18.4 inWith me in the front, Scott in the back, there's 85 lbs on the tail and 1035 onthe mains.So: [(85 lbs x 165.5 in) + (1035 lbs x 4 in)] / 1120 lbs = 16.3 inSince I used the leading edge as reference, then that figure is where the CG isrelative to it. Best I can tell, the CG range is 15 to 20 in, so I'm fine eitherway, right?Lastly, Dick said this plane was tail heavy when he built it, not surprising asit's got an A65 on the short fuse. He moved the wing back 4 1/2" and added asmall battery and header tank (right behind the firewall) to get it in balance.With just me in the plane, I calculated a 19.something CG. It would makesense Dick added just enough weight up front to get it safe, which would leaveme a lot of leeway in removing weight from the back.I was surprised that it only shifted by 2 in. I'm curious if others have had similarresults. Has anyone had experience moving the CG that far and how muchdifference did they notice in flying characteristics?Dick had the elevator gap taped. That tape failed on the way home so I've beenflying it without. I notice a difference in the flare, but not a lot. The tapewas on the bottom on the elevators/stab. It seems to me that the tape shouldbe on the top, as there is higher pressure on the top, than the bottom. Withthe tape on the bottom, the pressure difference would tend to want to pullthe tape "up". If it's on the top, the pressure difference would want to pushthe tape down, which seems like it would stay on there longer. Any commentsor experiences? Seems like the gap seal would make a larger difference witha more forward CG.Thanks,ToolsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Thu, 8 Dec 2011 10:03:43 -0700Subject: Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
Finally got a set of scales and weighed the Piet. The goal is to determine ifthe CG would move too far forward when my 180lb gets replaced by my son's 130lbsto fly it from the back with me in the front.I was told that the front seat essentially doesn't change the cg at all, whichseems to be the case.Anyway, here's what I found and am curious if others have had similar results (asthis is the FIRST time I've ever done weight and balance).Because it was practical, rather than do empty weight and balance and then allthe additives, we just weighed it in the various configurations.We propped the plane up level, that is the top longeron of the fuse parallel tothe ground, which was essentially level (using a simple bubble level) insidea concrete floor hangar.I'm using the leading edge as the reference point. The mains are 4" back, thetailwheel is 165.5" back from there. I measured straight to the ground, withthe plane propped level as described (using a plumb bob to transfer the leadingedge and tailwheel points).Empty, the plane is 810 lbs, ready to fly minus crew. I'm 180, Scott is 130, sogross is 1120.With Scott in the front and me in the back, there's 100lbs on the tail, and 1020on the mains. So: [(100 lbs x 165.5 in) + (1020 lbs x 4 in)] / 1120 lbs = 18.4 inWith me in the front, Scott in the back, there's 85 lbs on the tail and 1035 onthe mains.So: [(85 lbs x 165.5 in) + (1035 lbs x 4 in)] / 1120 lbs = 16.3 inSince I used the leading edge as reference, then that figure is where the CG isrelative to it. Best I can tell, the CG range is 15 to 20 in, so I'm fine eitherway, right?Lastly, Dick said this plane was tail heavy when he built it, not surprising asit's got an A65 on the short fuse. He moved the wing back 4 1/2" and added asmall battery and header tank (right behind the firewall) to get it in balance.With just me in the plane, I calculated a 19.something CG. It would makesense Dick added just enough weight up front to get it safe, which would leaveme a lot of leeway in removing weight from the back.I was surprised that it only shifted by 2 in. I'm curious if others have had similarresults. Has anyone had experience moving the CG that far and how muchdifference did they notice in flying characteristics?Dick had the elevator gap taped. That tape failed on the way home so I've beenflying it without. I notice a difference in the flare, but not a lot. The tapewas on the bottom on the elevators/stab. It seems to me that the tape shouldbe on the top, as there is higher pressure on the top, than the bottom. Withthe tape on the bottom, the pressure difference would tend to want to pullthe tape "up". If it's on the top, the pressure difference would want to pushthe tape down, which seems like it would stay on there longer. Any commentsor experiences? Seems like the gap seal would make a larger difference witha more forward CG.Thanks,ToolsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Thu, 8 Dec 2011 10:03:43 -0700Subject: Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust nuts
> Re: Pietenpol-List: Was A-65 exhaust gasket, now brass exhaust
Original Posted By: Dan Yocum