Original Posted By: Ray Krause
Seeings as how we all want to make Mr. Pietenpol's airplane just "that much better"than he designed it, I am wondering how many of you have opted for runningthe 1/8" elevator cables through the seat bottom cross brace as shown on theplans, or used pulleys as I have felt inclined to do. I see a few pics from theguys that have used pulleys, but don't remember seeing any where they drilledholes as shown on the plans through the rear seat bottom cross member.As I am at the point of needing to run the cable, I am trying to decide if I amgoing to have to wait until I can afford to buy more stuff from ACS, or if thewood guide is "good 'nuf". I need to get the nico press stuff and all thattoo...What are your recommendations?Thanks guys!MarkRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Pulleys or "through the seat" ?
RE: Pietenpol-List: Pulleys or "through the seat" ?
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I'm going to go out on a limb and say that even the purest of the puristswould agree that letting the cables rub on the wood should be avoided. Wehave the technology...Gary BootheNX308MB-----Original Message-----
I'm going to go out on a limb and say that even the purest of the puristswould agree that letting the cables rub on the wood should be avoided. Wehave the technology...Gary BootheNX308MB-----Original Message-----
Pietenpol-List: Re: Pulleys or "through the seat" ?
Original Posted By: "Mark Roberts"
Well, dang.Almost done with all the work my current money has left. (Daughter getting marriedin 7 weeks, or 49 days but who's counting...). But, I have the main controlsystem in place and all the varnish painting supply's ready.Thought I'd post a few pictures tonight. Rudder pedals, control tubes, rudder bar,control stick assembly with removable front stick (so I can pack an overnighttent/sleeping bag in front for fly-ins), and elevator pivot tube/horn assemblyin place. All I need to do now is cable up the stick and see if there isany slack in my set up as some have reported. Anyway, very excited to see progress.If you have not yet started, or are just beginning, have hope! Even if it takes10 years, progress can be made slowly and steady. I have had to wait for 6+ monthsto make any meaningful progress, but tonight I have seen almost the completionof the steel parts of the front controls.Welding was NOT as scary as I thought. Heck, I find I am loving it, and I was veryfearful of the process (as a search of previous posts would prove). I am almostready to plan the next plane as a steel Pober Jr. Ace, as I have those plansalready! Actually, I have found that I am pretty good at gas welding. Thisis the real benefit of home building. New skills and discoveries. Plus, I can'tbelieve how relaxing the whole thing is. My lovely and patient wife approves of the time I am building because she knowsthat while I am out in the barn, I completely STOP thinking about the stressesof life. It is, indeed, cheaper than therapy and when you are done, you havesomething to fly!! And Spruse and steel doesn't ask stupid questions about yourchildhood...
Here's some pictures of the set up...Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/imag ... ___Subject: Pietenpol-List: Re: Pulleys or "through the seat" ?
Well, dang.Almost done with all the work my current money has left. (Daughter getting marriedin 7 weeks, or 49 days but who's counting...). But, I have the main controlsystem in place and all the varnish painting supply's ready.Thought I'd post a few pictures tonight. Rudder pedals, control tubes, rudder bar,control stick assembly with removable front stick (so I can pack an overnighttent/sleeping bag in front for fly-ins), and elevator pivot tube/horn assemblyin place. All I need to do now is cable up the stick and see if there isany slack in my set up as some have reported. Anyway, very excited to see progress.If you have not yet started, or are just beginning, have hope! Even if it takes10 years, progress can be made slowly and steady. I have had to wait for 6+ monthsto make any meaningful progress, but tonight I have seen almost the completionof the steel parts of the front controls.Welding was NOT as scary as I thought. Heck, I find I am loving it, and I was veryfearful of the process (as a search of previous posts would prove). I am almostready to plan the next plane as a steel Pober Jr. Ace, as I have those plansalready! Actually, I have found that I am pretty good at gas welding. Thisis the real benefit of home building. New skills and discoveries. Plus, I can'tbelieve how relaxing the whole thing is. My lovely and patient wife approves of the time I am building because she knowsthat while I am out in the barn, I completely STOP thinking about the stressesof life. It is, indeed, cheaper than therapy and when you are done, you havesomething to fly!! And Spruse and steel doesn't ask stupid questions about yourchildhood...
Here's some pictures of the set up...Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/imag ... ___Subject: Pietenpol-List: Re: Pulleys or "through the seat" ?Original Posted By: "Jack Phillips"
Thinking the same thing Gary... But I am trying to convince myself that I don'tneed to spend 35 more bucks for a plane that will only cost me 8000 to build...Doap!Read this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Thinking the same thing Gary... But I am trying to convince myself that I don'tneed to spend 35 more bucks for a plane that will only cost me 8000 to build...Doap!Read this topic online here:http://forums.matronics.com/viewtopic.p ... __________
RE: Pietenpol-List: Re: Pulleys or "through the seat" ?
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I used pulleys. Sawing through the cross-member with a cable just didn'tseem like a good way to go.You can see the elevator cable pulley in the foreground of the picturebelow. You can also see the pulleys I used for the rudder cables as well asthe trim system:There's a rule of thumb in the Bingelis books about any change in directionof a cable more than X degrees should use a pulley, but my books are packedaway at the moment and I don't remember what the angle is. Look it up inyour Bingelis books.Jack PhillipsNX899JPSmith Mountain Lake, Virginia-----Original Message-----
I used pulleys. Sawing through the cross-member with a cable just didn'tseem like a good way to go.You can see the elevator cable pulley in the foreground of the picturebelow. You can also see the pulleys I used for the rudder cables as well asthe trim system:There's a rule of thumb in the Bingelis books about any change in directionof a cable more than X degrees should use a pulley, but my books are packedaway at the moment and I don't remember what the angle is. Look it up inyour Bingelis books.Jack PhillipsNX899JPSmith Mountain Lake, Virginia-----Original Message-----
Re: Pietenpol-List: Pulleys or "through the seat" ?
Original Posted By: "Mark Roberts"
Mark, my fuse is not handy for a pic. I drilled two holes in the cross piece and added two small pulleys on the back of the seat. I still get a bit of dragging noise when I move the stick, but it seems to be free enough. Chuck----- Original Message -----
Mark, my fuse is not handy for a pic. I drilled two holes in the cross piece and added two small pulleys on the back of the seat. I still get a bit of dragging noise when I move the stick, but it seems to be free enough. Chuck----- Original Message -----
Pietenpol-List: Re: Pulleys or "through the seat" ?
Original Posted By: "kevinpurtee"
I understand your point, Jim. You built yours with a door. This gentleman istalking about retrofitting an existing fuselage. He's going to have to enjoyflying light passengers unless he wants to essentially build a new fuselage.--------Kevin "Axel" PurteeRebuilding NX899KPAustin/San Marcos, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Pulleys or "through the seat" ?
I understand your point, Jim. You built yours with a door. This gentleman istalking about retrofitting an existing fuselage. He's going to have to enjoyflying light passengers unless he wants to essentially build a new fuselage.--------Kevin "Axel" PurteeRebuilding NX899KPAustin/San Marcos, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Pulleys or "through the seat" ?
Original Posted By: Isablcorky(at)aol.com
Mark - I did it per the plans originally. On the rebuild I'll add pulleys becauseit seems like the right thing to do. Having said that, the per-the-planstreatment was a non-issue. I added guides that kept the cable from sawing throughthe structure. The cables wore the guides to a certain point and then apparentlyreached equilibrium - no more wear and never an impact on the structure.The cables held up fine as well.The pulleys are like the piano hinge aileron hinges. It darn sure looks like abetter design, even though the per-the-plans design worked fine. (I noticedwhen I bought strap hinges this time that the quality of the hinges were significantlyless then what I bought 15 years ago. I bought the piano hinges andwill go that route.)--------Kevin "Axel" PurteeRebuilding NX899KPAustin/San Marcos, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Mark - I did it per the plans originally. On the rebuild I'll add pulleys becauseit seems like the right thing to do. Having said that, the per-the-planstreatment was a non-issue. I added guides that kept the cable from sawing throughthe structure. The cables wore the guides to a certain point and then apparentlyreached equilibrium - no more wear and never an impact on the structure.The cables held up fine as well.The pulleys are like the piano hinge aileron hinges. It darn sure looks like abetter design, even though the per-the-plans design worked fine. (I noticedwhen I bought strap hinges this time that the quality of the hinges were significantlyless then what I bought 15 years ago. I bought the piano hinges andwill go that route.)--------Kevin "Axel" PurteeRebuilding NX899KPAustin/San Marcos, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Re: Progress!
Original Posted By: "Mark Roberts"
Thanks guys!Yep, sometimes it's good to trust your gut, and mine was saying "pulleys", butI was hoping to be able to keep working without having to wait to order them.But, I'll be flying this for years and pulleys will be better.Jack, I'd like to see more of your elevator trim set up. I haven't yet figuredout how to do mine, and your crank assembly in the picture looks good. Do youhave other pics handy without too much digging around? I hope the constructionof your place in VA is going nicely!And Kevin: thanks for the heads up on the aileron hinges. I am planning to usethe piano hinges too.MarkRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Progress!
Thanks guys!Yep, sometimes it's good to trust your gut, and mine was saying "pulleys", butI was hoping to be able to keep working without having to wait to order them.But, I'll be flying this for years and pulleys will be better.Jack, I'd like to see more of your elevator trim set up. I haven't yet figuredout how to do mine, and your crank assembly in the picture looks good. Do youhave other pics handy without too much digging around? I hope the constructionof your place in VA is going nicely!And Kevin: thanks for the heads up on the aileron hinges. I am planning to usethe piano hinges too.MarkRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Progress!
Re: Pietenpol-List: Re: Pulleys or "through the seat" ?
Original Posted By: Ken Bickers
Thanks guys! The welding is much easier and more fun than I had imagined!Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sun, 7 Apr 2013 10:49:21 -0600Subject: Re: Pietenpol-List: Re: Pulleys or "through the seat" ?
Thanks guys! The welding is much easier and more fun than I had imagined!Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sun, 7 Apr 2013 10:49:21 -0600Subject: Re: Pietenpol-List: Re: Pulleys or "through the seat" ?
Pietenpol-List: Re: Aluminum Bump
Original Posted By: "Douwe Blumberg"
So you were bored, Gary?--------Kevin "Axel" PurteeRebuilding NX899KPAustin/San Marcos, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
So you were bored, Gary?--------Kevin "Axel" PurteeRebuilding NX899KPAustin/San Marcos, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________