Pietenpol-List: Anybody move the inboard rib slightly outboard....?!!?!?

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Pietenpol-List: Anybody move the inboard rib slightly outboard....?!!?!?

Post by matronics »

Original Posted By: "aerocarjake"
After reading through the referenced thread, I agree with your recommendation.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Anybody move the inboard rib slightly outboard....?!!?!?
matronics
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Pietenpol-List: Re: Anybody move the inboard rib slightly outboard....?!!?!?

Post by matronics »

Original Posted By: "Bill Church"
Hello good Piet-ple,I am in the process of building up the inboard ends and the center section of thewing. If I read the plans correctly, one of the bolts that holds the metalattach strap is directly in line with the inboard end rib. Since I am using asolid plywood end rib, I would not be able to get that bolt in or out. So has anyone else moved the rib slightly outboard - as I show in the attachedphoto - so the the bolt is accessible...?!?!? And if I do that, is there somewhereelse I may be getting in trouble if I do this...??!?thanks.....BTW, proof it does RAIN in Seattle.... (airplane building season!)--------Jake Schultz - curator,Newport Way Air Museum (OK, it's just my home)Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/imag ... ___Subject: Pietenpol-List: Re: Anybody move the inboard rib slightly outboard....?!!?!?
matronics
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Joined: Sat Mar 18, 2017 8:29 am

Pietenpol-List: Re: Anybody move the inboard rib slightly outboard....?!!?!?

Post by matronics »

Original Posted By: "aerocarjake"
Jake,If you read the plans correctly, you'll also see that there aren't any solid plywoodribs. :)Yes, you are reading the plans correctly when you say that one of the mountingbolts for the spar butt joint straps does fall in the space occupied by the inboardrib.Just not sure why you would ever need to remove that bolt. However, if you wantedto keep that option open, you could notch out a space in your plywood ribto allow you to do that. If you move that rib further outboard, you will be increasingthe gap between wing and centersection that needs to be bridged (usuallywith a strip of aluminum.)In looking at your photo, your plywood rib appears to be about 1/4" thick. I thinkyou will need to add some reinforcement to that rib for it to be able toresist the lateral forces that will be imposed on it by the fabric as it shrinks.The plywood will not be as rigid as the built-up Spruce rib.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/rib_ ... ___Subject: Pietenpol-List: Re: Anybody move the inboard rib slightly outboard....?!!?!?
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Re: Pietenpol-List: Re: tarp

Post by matronics »

Original Posted By: Jack
Thanks Bill.... yes, I will have to reinforce the plywood rib. I did not buildmy wing (bought it from a gentleman who had started a Piet and then sold it) soI do not have a rib jig. Since every jig is slightly different, I made my plywoodribs EXACTLY the same contour as the already built-up ribs. I also figureit'll be nice to have those end ribs closed off as some other folks have doneas well....?!?!? I had not thought to make a cutout for the bolt and just "leaveit in there" after I glued in the rib.... interesting thought worth somefurther consideration - thx.--------Jake Schultz - curator,Newport Way Air Museum (OK, it's just my home)Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Re: tarp
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