Original Posted By: "Don Emch"
You're welcome.--------Curt MerdanFlower Mound, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Don Emch W&B Data, aka Cure for Insomnia
Pietenpol-List: Don Emch W&B Data, aka Cure for Insomnia
Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
Original Posted By: "Don Emch"
Well just in case any of you are having a tough time falling asleep tonight....or if you want to laugh at a very amateurish hand drawn Weight and Balance sheet....here it is.For quick background. Essentially it is a "plans built" (according to Don Emch,Ha!) airframe. Long fuselage with plans built steel split axle gear. I followedthe plans the best I could with the exception of brakes, small tailwheel,nose tank, slanting the cabanes back 3.5" and cheating slightly on the A-65engine mount by extending it about 1". As far as I know that is about all Idid. (Hopefully I can still sit on the Top Curmudgeon Board). According tomy measurements here, my wing leading edge is 6" forward of the axle. Which ifyou look at the plans and note that I moved the wing back 3.5" then you'll seethat the axle is located according to plans. I really think that moving thewing back is key for both weight and balance and being able to keep the axleat plans location while using brakes. A lot more is accomplished versus extendingthe engine mount. My seat, baggage, and fuel "arms" were derived by actuallyputting fuel, baggage and people in those locations while on the scalesand working the math backwards to get accurate arm lengths. A couple of scenariosare given as samples in flight conditions too. You can see with me at about185 lbs. and running the tank dry I approach the aft limit... but then I'llprobably have a few other things on my mind at that point.Interestingly, It feels the nicest in flight when the C.G. is hovering around the17" - 18" aft of leading edge area. I think that wing likes it there.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/piet ... ___Subject: Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
Well just in case any of you are having a tough time falling asleep tonight....or if you want to laugh at a very amateurish hand drawn Weight and Balance sheet....here it is.For quick background. Essentially it is a "plans built" (according to Don Emch,Ha!) airframe. Long fuselage with plans built steel split axle gear. I followedthe plans the best I could with the exception of brakes, small tailwheel,nose tank, slanting the cabanes back 3.5" and cheating slightly on the A-65engine mount by extending it about 1". As far as I know that is about all Idid. (Hopefully I can still sit on the Top Curmudgeon Board). According tomy measurements here, my wing leading edge is 6" forward of the axle. Which ifyou look at the plans and note that I moved the wing back 3.5" then you'll seethat the axle is located according to plans. I really think that moving thewing back is key for both weight and balance and being able to keep the axleat plans location while using brakes. A lot more is accomplished versus extendingthe engine mount. My seat, baggage, and fuel "arms" were derived by actuallyputting fuel, baggage and people in those locations while on the scalesand working the math backwards to get accurate arm lengths. A couple of scenariosare given as samples in flight conditions too. You can see with me at about185 lbs. and running the tank dry I approach the aft limit... but then I'llprobably have a few other things on my mind at that point.Interestingly, It feels the nicest in flight when the C.G. is hovering around the17" - 18" aft of leading edge area. I think that wing likes it there.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/piet ... ___Subject: Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
Re: Pietenpol-List: Fwd: Motor mount fittings
Original Posted By: Goff Electric
One more thing...As far as the brakes go, they are just 5" drum brakes. They will kinda hold forrun up. A low run up while on pavement and a healthier run up if on grass.I've never felt the need to use them on landing.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Fwd: Motor mount fittings
One more thing...As far as the brakes go, they are just 5" drum brakes. They will kinda hold forrun up. A low run up while on pavement and a healthier run up if on grass.I've never felt the need to use them on landing.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Fwd: Motor mount fittings
Original Posted By:> owner-pietenpol-list-server(at)matronics.com [mailto:owner-pietenpol-li
Thanks jack, great explanation and pictures.KeithSent from my iPhone> On Mar 22, 2014, at 1:10 PM, "Jack Phillips" wrote:> > Keith,> > I modified the wooden strip that holds the fabric off the plywood to fit over and around the engine mount brackets as shown below:> > > When the fabric went on, you could net tell where the engine mount bolts were, as shown below:> > > > Just make sure that you cover the bolt heads (and anything elese that the fabric might chafe against) with pinked edge tape or a pinked edge patch to protect the fabric. It=99s amazing to long alonside the fuselage in flight and see how much drumming takes place with the fabric. If left unreinforced, any chafing will quickly wear holes right through it.> > Jack Phillips> NX899JP> Smith Mountain Lake, Virginia>
Thanks jack, great explanation and pictures.KeithSent from my iPhone> On Mar 22, 2014, at 1:10 PM, "Jack Phillips" wrote:> > Keith,> > I modified the wooden strip that holds the fabric off the plywood to fit over and around the engine mount brackets as shown below:> > > When the fabric went on, you could net tell where the engine mount bolts were, as shown below:> > > > Just make sure that you cover the bolt heads (and anything elese that the fabric might chafe against) with pinked edge tape or a pinked edge patch to protect the fabric. It=99s amazing to long alonside the fuselage in flight and see how much drumming takes place with the fabric. If left unreinforced, any chafing will quickly wear holes right through it.> > Jack Phillips> NX899JP> Smith Mountain Lake, Virginia>
Re: Pietenpol-List: Don Emch W&B Data, aka Cure for Insomnia
Original Posted By: airlion2(at)gmail.com
Tom and Tools,Many thanks for the information. I will take the torch over to the local weldingsupply on Monday and let them give me the good or bad news.Thanks again!--------Semper Fi,Terry HandAthens, GAUSMC, USMCR, ATPBVD DVD PDQ BBQRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Don Emch W&B Data, aka Cure for Insomnia
Tom and Tools,Many thanks for the information. I will take the torch over to the local weldingsupply on Monday and let them give me the good or bad news.Thanks again!--------Semper Fi,Terry HandAthens, GAUSMC, USMCR, ATPBVD DVD PDQ BBQRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Don Emch W&B Data, aka Cure for Insomnia
Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
Original Posted By: "Don Emch"
I've seen shops go both ways on the recert thing. USUALLY taking them in earlydoes the trick. It's one of those things, pretty sure I've gotten by once in a while because Ididn't mention the date at all... like argon a few weeks ago. Didn't get by withit with CO2 at another shop a few months before that. Believe it or not, simply how the bottle looks makes a huge difference. The guyat the front desk wouldn't take a bottle once because it was owned by a companynow defunct... wouldn't hydro it, exchange it, nothing. And it was awfulrusty looking.When at the dock exchanging a couple others, the guy asked about the one 02 bottleI wasn't exchanging, told him the story. He said wire wheel it, paint itblue and try again. I did, same guy, few months later didn't give it a secondglance. Weird.So if one place gives you a hard time, try another.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
I've seen shops go both ways on the recert thing. USUALLY taking them in earlydoes the trick. It's one of those things, pretty sure I've gotten by once in a while because Ididn't mention the date at all... like argon a few weeks ago. Didn't get by withit with CO2 at another shop a few months before that. Believe it or not, simply how the bottle looks makes a huge difference. The guyat the front desk wouldn't take a bottle once because it was owned by a companynow defunct... wouldn't hydro it, exchange it, nothing. And it was awfulrusty looking.When at the dock exchanging a couple others, the guy asked about the one 02 bottleI wasn't exchanging, told him the story. He said wire wheel it, paint itblue and try again. I did, same guy, few months later didn't give it a secondglance. Weird.So if one place gives you a hard time, try another.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
Re: Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
Original Posted By: airlion2(at)gmail.com
I think that my biggest concern at this point is the torch itself. So, what branddo you recommend?Buehler? Buehler? Anyone? Anyone?--------Semper Fi,Terry HandAthens, GAUSMC, USMCR, ATPBVD DVD PDQ BBQRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
I think that my biggest concern at this point is the torch itself. So, what branddo you recommend?Buehler? Buehler? Anyone? Anyone?--------Semper Fi,Terry HandAthens, GAUSMC, USMCR, ATPBVD DVD PDQ BBQRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Re: Don Emch W&B Data, aka Cure for Insomnia
Original Posted By: Michael Perez
Thanks don, I will try that tomorrow, GardinerSent from my iPad> On Mar 22, 2014, at 6:08 PM, "Don Emch" wrote:> > > Can you just go to the outside of the angle iron? Would that get it close towhere you wouldn't need to actually change the fixture?> > Don Emch> NX899DE> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 864#420864> > > > > > > > > > ________________________________________________________________________________Date: Sat, 22 Mar 2014 15:39:02 -0700 (PDT)
Thanks don, I will try that tomorrow, GardinerSent from my iPad> On Mar 22, 2014, at 6:08 PM, "Don Emch" wrote:> > > Can you just go to the outside of the angle iron? Would that get it close towhere you wouldn't need to actually change the fixture?> > Don Emch> NX899DE> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 864#420864> > > > > > > > > > ________________________________________________________________________________Date: Sat, 22 Mar 2014 15:39:02 -0700 (PDT)