Original Posted By: "Dangerous Dave"
Anyone still reading email that's attending Sun'n'fun=2C I could use a favor if you're willing.I'm trying to get a bunch of turnbuckles from B&B but he's got everything at Sun'n'Fun. Wondering if anyone would be willing to get me some and promptly be reimbursed. Preferably someone from Minneapolis area - Dick Navratril perhaps???Later=2CTom Brant ________________________________________________________________________________Subject: Pietenpol-List: Almost done
Pietenpol-List: Almost done
Original Posted By: "Jack"
Not much more to do,should be done here shortly,dave--------Covering PietRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/2011 ... __________
Not much more to do,should be done here shortly,dave--------Covering PietRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/2011 ... __________
Re: Pietenpol-List: Almost done
Original Posted By: Rick Holland
Hi Chuck,I really feel for you and the bad feeling you get at the thought of re-doing somethinglike this. It just sucks! I know that Douglas Fir is supposedly stronger, but even the rear spars don't appearto meet the specs. I understand a big reason for the grain per inch spechas some to do with warpage, but strength is a very big issue too. Strengththat is measureable and consistent is found in spar examples that meet the specs.If you don't meets those specs then you really don't know what you have.Again the whole idea of re-doing something like this sucks. I made center sectionfittings I didn't think were good so I dismantled the whole centersectionand built new. Then there was the time the hangar collapsed on the finished airplaneand I had to rebuild. It just sucks!Maybe you could cut the upright where the rib is glued to the spar and then whenreplacing the spar you could just splice in a new upright. That's how I rebuiltmy centersection.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 28 Mar 2011 13:36:28 -0600Subject: Re: Pietenpol-List: Almost done
Hi Chuck,I really feel for you and the bad feeling you get at the thought of re-doing somethinglike this. It just sucks! I know that Douglas Fir is supposedly stronger, but even the rear spars don't appearto meet the specs. I understand a big reason for the grain per inch spechas some to do with warpage, but strength is a very big issue too. Strengththat is measureable and consistent is found in spar examples that meet the specs.If you don't meets those specs then you really don't know what you have.Again the whole idea of re-doing something like this sucks. I made center sectionfittings I didn't think were good so I dismantled the whole centersectionand built new. Then there was the time the hangar collapsed on the finished airplaneand I had to rebuild. It just sucks!Maybe you could cut the upright where the rib is glued to the spar and then whenreplacing the spar you could just splice in a new upright. That's how I rebuiltmy centersection.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 28 Mar 2011 13:36:28 -0600Subject: Re: Pietenpol-List: Almost done
RE: Pietenpol-List: Almost done
Original Posted By: owner-pietenpol-list-server(at)matronics.com
DaveCould you explain how you built your engine mount for that sweet lookingreal airplane engine? What kind of a jig did you use, how did you stop itfrom twisting when welding(is it gas or TIG welded). Details detailsdetails and I want larger pictures. YES, I said larger pictures so I cansee some detail. ChrisSacramento, CaWestcoastpiet.com-----Original Message-----
DaveCould you explain how you built your engine mount for that sweet lookingreal airplane engine? What kind of a jig did you use, how did you stop itfrom twisting when welding(is it gas or TIG welded). Details detailsdetails and I want larger pictures. YES, I said larger pictures so I cansee some detail. ChrisSacramento, CaWestcoastpiet.com-----Original Message-----
Original Posted By: "Jack"
Chris,Its pretty easy to make the jig.Used 2 pieces of mdf,one to replicate theback of the engine with the center of thrust marked and drilled for Lord mounts,theother to do the same for the firewall with aluminum brackets bolted onwhere the engine mounts are,so a duplicate of the firewall.Then 2', 3/8" althreadrods run through 1" square aluminum tubing cut to the exact length of themount for spacers and rigidity and a 1x2 maple spacer on the bottom.Bolted onthe mount tubing,cut up and notched the tubing and oxy-act welded the thing together.Took10 hrs,came out perfect.dave--------Covering PietRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/2011 ... __________
Chris,Its pretty easy to make the jig.Used 2 pieces of mdf,one to replicate theback of the engine with the center of thrust marked and drilled for Lord mounts,theother to do the same for the firewall with aluminum brackets bolted onwhere the engine mounts are,so a duplicate of the firewall.Then 2', 3/8" althreadrods run through 1" square aluminum tubing cut to the exact length of themount for spacers and rigidity and a 1x2 maple spacer on the bottom.Bolted onthe mount tubing,cut up and notched the tubing and oxy-act welded the thing together.Took10 hrs,came out perfect.dave--------Covering PietRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/2011 ... __________
Pietenpol-List: Re: Almost done
Original Posted By: "Dangerous Dave"
> --> Pietenpol-List message posted> by: "Don Emch" > > Hi Chuck,> > I really feel for you and the bad feeling you get at the> thought of re-doing something like this. It just> sucks! > > I know that Douglas Fir is supposedly stronger, but even> the rear spars don't appear to meet the specs. I> understand a big reason for the grain per inch spec has some> to do with warpage, but strength is a very big issue> too. Strength that is measureable and consistent is> found in spar examples that meet the specs. If you> don't meets those specs then you really don't know what you> have.> > Again the whole idea of re-doing something like this> sucks. I made center section fittings I didn't think> were good so I dismantled the whole centersection and built> new. Then there was the time the hangar collapsed on> the finished airplane and I had to rebuild. It just> sucks!> > Maybe you could cut the upright where the rib is glued to> the spar and then when replacing the spar you could just> splice in a new upright. That's how I rebuilt my> centersection.> > Don Emch> NX899DE> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 315#335315> > > > > > > > Email Forum -> FAQ,> - MATRONICS WEB FORUMS -> List Contribution Web Site -> -Matt> Dralle, List Admin.> > > > ________________________________________________________________________________Subject: Pietenpol-List: Re: Almost done
> --> Pietenpol-List message posted> by: "Don Emch" > > Hi Chuck,> > I really feel for you and the bad feeling you get at the> thought of re-doing something like this. It just> sucks! > > I know that Douglas Fir is supposedly stronger, but even> the rear spars don't appear to meet the specs. I> understand a big reason for the grain per inch spec has some> to do with warpage, but strength is a very big issue> too. Strength that is measureable and consistent is> found in spar examples that meet the specs. If you> don't meets those specs then you really don't know what you> have.> > Again the whole idea of re-doing something like this> sucks. I made center section fittings I didn't think> were good so I dismantled the whole centersection and built> new. Then there was the time the hangar collapsed on> the finished airplane and I had to rebuild. It just> sucks!> > Maybe you could cut the upright where the rib is glued to> the spar and then when replacing the spar you could just> splice in a new upright. That's how I rebuilt my> centersection.> > Don Emch> NX899DE> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 315#335315> > > > > > > > Email Forum -> FAQ,> - MATRONICS WEB FORUMS -> List Contribution Web Site -> -Matt> Dralle, List Admin.> > > > ________________________________________________________________________________Subject: Pietenpol-List: Re: Almost done