Original Posted By: "Michael Brusilow"
Did anyone have trouble with the last rib by the wingtip distortingduring covering? don't know if this has been discussed before or not,but I'm ready to cover and see this as a trouble spot. Even though ithas extra truss pieces in the vertical plane, seems that it could"squirt" back during tightening. and belly in the middle. Should theribs be crisscross laced?thankswalt________________________________________________________________________________
Pietenpol-List: Question on wing covering
Re: Pietenpol-List: Question on wing covering
Original Posted By: walter evans
----- Original Message -----
----- Original Message -----
Re: Pietenpol-List: Question on wing covering
Original Posted By: "Michael Brusilow"
Mike, Think we're talking about different ends. I fabricated the wing as perthe 3 piece print, wich includes the cross bracing of the root rib, and theaddition of the 1/8 X2" ply at the seam. My question area is at the tipwhere the fabric crosses the last rib and then sharply angles down to thetip bow. Is this what you meant?thankswalt----- Original Message -----
Mike, Think we're talking about different ends. I fabricated the wing as perthe 3 piece print, wich includes the cross bracing of the root rib, and theaddition of the 1/8 X2" ply at the seam. My question area is at the tipwhere the fabric crosses the last rib and then sharply angles down to thetip bow. Is this what you meant?thankswalt----- Original Message -----
Pietenpol-List: Question on wing covering
Original Posted By: "Warren D. Shoun"
> Pietenpol-List: Question on wing covering
Original Posted By: "Warren D. Shoun"
Pietenpol-List: UKAirCampers
Original Posted By: Matt Dralle
RE: Pietenpol-List: Question on wing covering
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I didn't have any problems with the tip rib as designed, but I did with theroot portion of the wing panels on the three piece rib. I built per planswith the extra 1/2x1/2" diagonal bracing, and the 2" strip of 1/16" ply, butafter a year or so the rib slid toward the tip at the rib-spar joint on boththe top and bottom of the front and rear spar. The fix was to pull the ribback and shimmy a block of wood 1/4" thick and the width of the spar, up andbehind each rib-spar joint. fixed the problem. If you are building new,fill the gap between the first root rib and the second rib, top and bottomwith spar caps to fill in between the ribs. This will prevent the root ribsfrom being pulled toward the tip. Give this treatment to both wings, bothspars, top and bottom.Steve E.-----Original Message-----
I didn't have any problems with the tip rib as designed, but I did with theroot portion of the wing panels on the three piece rib. I built per planswith the extra 1/2x1/2" diagonal bracing, and the 2" strip of 1/16" ply, butafter a year or so the rib slid toward the tip at the rib-spar joint on boththe top and bottom of the front and rear spar. The fix was to pull the ribback and shimmy a block of wood 1/4" thick and the width of the spar, up andbehind each rib-spar joint. fixed the problem. If you are building new,fill the gap between the first root rib and the second rib, top and bottomwith spar caps to fill in between the ribs. This will prevent the root ribsfrom being pulled toward the tip. Give this treatment to both wings, bothspars, top and bottom.Steve E.-----Original Message-----
Pietenpol-List: Question on wing covering
Original Posted By: John Duprey
Original Posted By: "Oscar Zuniga"
===============================CorvAIRCRAFT===============================VAirHeads,I just spent close to twohours talking to William. He seems to be in great spirits and sounded justlike his old self. He retrieved what's left of the Piet today, and plans toput the engine on the test stand and run it for a week or so (just to provethat there's nothing really wrong with it) and then tear it down for a looksee. Initial thoughts are the lack of carb heat, and the position of thecarb heat push/pull cable corroborates that theory. He said he'd give mefull report when he knows more details on the condition of his engine, whichI'll forward on to CorvAircraft. He verified that his engine has a 9:1compression ratio, and has been running 100LL for about the last 300 hours.He also mentioned that Steve Makish hasn't flown yet, but is very close. [You Piet guys don't know about Steve, but he's installing a 3100cc 'Big Boy' Corvair in his KR-Oscar]He says he's not exactly back up to speed yet, but admitted to getting asmuch Corvair work accomplished as is feasible from a chair in the hangarwith a Bud in one hand. It was a real pleasure to talk to him again, andI'm looking forward to next year's Corvair College, as is he. He's prettysure he's going to have to have his gall bladder removed over the holidays,and I hope to visit him at his parent's house while I'm in NY on businessaround New Year's. He has at least one Corvair engine to build for acustomer, so he's back on the job. I'm glad he's back with us...======================================================Oscar ZunigaMedford, Oregonmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________
===============================CorvAIRCRAFT===============================VAirHeads,I just spent close to twohours talking to William. He seems to be in great spirits and sounded justlike his old self. He retrieved what's left of the Piet today, and plans toput the engine on the test stand and run it for a week or so (just to provethat there's nothing really wrong with it) and then tear it down for a looksee. Initial thoughts are the lack of carb heat, and the position of thecarb heat push/pull cable corroborates that theory. He said he'd give mefull report when he knows more details on the condition of his engine, whichI'll forward on to CorvAircraft. He verified that his engine has a 9:1compression ratio, and has been running 100LL for about the last 300 hours.He also mentioned that Steve Makish hasn't flown yet, but is very close. [You Piet guys don't know about Steve, but he's installing a 3100cc 'Big Boy' Corvair in his KR-Oscar]He says he's not exactly back up to speed yet, but admitted to getting asmuch Corvair work accomplished as is feasible from a chair in the hangarwith a Bud in one hand. It was a real pleasure to talk to him again, andI'm looking forward to next year's Corvair College, as is he. He's prettysure he's going to have to have his gall bladder removed over the holidays,and I hope to visit him at his parent's house while I'm in NY on businessaround New Year's. He has at least one Corvair engine to build for acustomer, so he's back on the job. I'm glad he's back with us...======================================================Oscar ZunigaMedford, Oregonmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________
Re: Pietenpol-List: Question on wing covering
Original Posted By: "Steve Eldredge"
Steve,I have wondered about this. Why wouldn't it be wise to use a plywood rib,say 1/4" thick? I am planning to do that on all the root end ribs on thewings and center section.TedNaples, FL----- Original Message -----
Steve,I have wondered about this. Why wouldn't it be wise to use a plywood rib,say 1/4" thick? I am planning to do that on all the root end ribs on thewings and center section.TedNaples, FL----- Original Message -----
Re: Pietenpol-List: Question on wing covering
Original Posted By: "Oscar Zuniga"
Steve, I have wondered about this. Why wouldn't it be wise to use a plywoodrib, say 1/4" thick? I am planning to do that on all the root end ribs onthe wings and center section. Ted Naples, FL +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ During the time I was building my Piet in the early 80's, I bought aPiet built by Ed Sampson, which I sold after my Piet was completed. That Sampson built Piet had plywood ribs with spruce capstrips. Mike B Piet N687MB ( Mr Sam )________________________________________________________________________________
Steve, I have wondered about this. Why wouldn't it be wise to use a plywoodrib, say 1/4" thick? I am planning to do that on all the root end ribs onthe wings and center section. Ted Naples, FL +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ During the time I was building my Piet in the early 80's, I bought aPiet built by Ed Sampson, which I sold after my Piet was completed. That Sampson built Piet had plywood ribs with spruce capstrips. Mike B Piet N687MB ( Mr Sam )________________________________________________________________________________
Pietenpol-List: William Wynne
Original Posted By: "Mark Langford"
Here's a bit more on William, for those interested:
Here's a bit more on William, for those interested:
Re: Pietenpol-List: Question on wing covering
Original Posted By: Kirk & Laura Huizenga