Original Posted By: "aviken"
Subject: Pietenpol-List: leading edgesJust a thought I wanted to =B3put out there=B2 for people still buildingregarding metal leading edges.RE-PIET originally had metal leading edges, and during her rebuild, Donrebuilt the wings and replaced the metal with ply leading edges. I reallycannot tell you how much stiffness that added to the wing structure. It wasquite noticeable when lifting and moving the wing panels around.If I were building again, I would consider nothing but a ply leading edge asit becomes part of the structure whereas metal really does not.$.02Douwe>________________________________________________________________________________Subject: Pietenpol-List: wood substitution
Pietenpol-List: wood substitution
Pietenpol-List: Re: wood substitution
Original Posted By: "jarheadpilot82"
I have finished both sides of my fuselage, it appears I may run short of Sprucefor the horizontal cross pieces. I was thinking of using my remaining sprucefrom the tail forward, then if needed substitute either good fir or poplar.Couldn't find a discussion on this but I know there has to have been, What isthe thought here.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: wood substitution
I have finished both sides of my fuselage, it appears I may run short of Sprucefor the horizontal cross pieces. I was thinking of using my remaining sprucefrom the tail forward, then if needed substitute either good fir or poplar.Couldn't find a discussion on this but I know there has to have been, What isthe thought here.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: wood substitution
Pietenpol-List: Re: wood substitution
Original Posted By: "tools"
who was it that received an un finished prop from Cloudcars? I would like to hearhow it went as far as getting it smoothed up and coated. I am getting one inbefore long hopefully and It would be good to visit with someone who has beendown that road.there was even some talk of testing it in the rough conditionbut I don't know if that was ever done. I don't believe I want to do that butinteresting to think about. if it's not too early to mention it- Merry Christmasto all. RaymondRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: wood substitution
who was it that received an un finished prop from Cloudcars? I would like to hearhow it went as far as getting it smoothed up and coated. I am getting one inbefore long hopefully and It would be good to visit with someone who has beendown that road.there was even some talk of testing it in the rough conditionbut I don't know if that was ever done. I don't believe I want to do that butinteresting to think about. if it's not too early to mention it- Merry Christmasto all. RaymondRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: wood substitution
Pietenpol-List: Re: wood substitution
Original Posted By: "taildrags"
I had no qualms scarfing in some southern yellow pine that graded well above aircraftstandards (defects, growth rings, runout).It's stronger in all aspects, glues well and swells/shrinks nearly the same, sothere should be no stress in the glue joints with seasonal moisture variation.Given the increased density and how much I used, I calculated my plane increasedsome 6 oz in weight due to the substitution. Given failures occurred wherebolt holes exist, the increase in strength of the substituted wood made senseanyway.Substituting as close to the CG as possible as you mention, I see no problems withyour plan.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: wood substitution
I had no qualms scarfing in some southern yellow pine that graded well above aircraftstandards (defects, growth rings, runout).It's stronger in all aspects, glues well and swells/shrinks nearly the same, sothere should be no stress in the glue joints with seasonal moisture variation.Given the increased density and how much I used, I calculated my plane increasedsome 6 oz in weight due to the substitution. Given failures occurred wherebolt holes exist, the increase in strength of the substituted wood made senseanyway.Substituting as close to the CG as possible as you mention, I see no problems withyour plan.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: wood substitution
Original Posted By: "Clif Dawson"
The excerpt from AC43.13 says poplar is slightly less strong than spruce "exceptin compression and crushing". Horizontal framing members are in compression,no? Besides all that, I've heard it said that the stock Pietenpol fuselageis heck for stout anyway, so if it were my airplane I wouldn't bat an eyelashbefore substituting poplar or fir for spruce in some of the framing members.--------Oscar ZunigaMedford, ORAir Camper NX41CC "Scout"A75 powerRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
The excerpt from AC43.13 says poplar is slightly less strong than spruce "exceptin compression and crushing". Horizontal framing members are in compression,no? Besides all that, I've heard it said that the stock Pietenpol fuselageis heck for stout anyway, so if it were my airplane I wouldn't bat an eyelashbefore substituting poplar or fir for spruce in some of the framing members.--------Oscar ZunigaMedford, ORAir Camper NX41CC "Scout"A75 powerRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________