Brodhead Pietenpol Association

Original Posted By: Jim Brewer
After years of reading about UV degradation, exposure issues with coveringmaterials; and seeing UV tests galore I got to thinking to myself. "how manyhours of sunlight exposure will most Piets actually experience?"I'm sure they exist, but I don't know of a single Piet that doesn't residefull-time in a hangar. I then did some math and calculated the number ofhours a year she's actually outside, and what percentage of those days arefull sun, and what percentage of full-sun days eve/morning flights with alow sun angle to arrive at some numbers. I'm certainly not suggesting UV protection is unimportant. I'm justwondering if we are possibly overdoing it sometimes considering the realworld application on this airplane.Do some figuring, I'll bet you'll be surprised. I was. I think I concludedthat I could fly with untreated ceconite for like two decades.Douwe________________________________________________________________________________Date: Fri, 29 Aug 2014 10:23:27 -0400

Original Posted By: jim hyde

Original Posted By: "tools"
I was talking to Rick at antique engine rebuilding and he tells me he has neverdriled the crank in any Ford engine he has built for the Pietenol. Can anyonegve me some perspective on this? The plans call for drilling the crank,Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: UV exposure, realiy ck...

Original Posted By: "William Wynne"
Grant,Answer these questions:1) What engine are you using?2) How long is your fuselage?3) What is the dressed, flying weight of the heaviest pilot who will be flyingthe plane?>From the above, look at the articles that have an example plane that is closestto your plan. It must be the same on points 1) and 2), but if your maximum pilotweight is above any example listed, that is OK, I will show you the calculationto move the wing to the correct location for your conditions, and onlyfrom there do you get the main gear location.If you write back in with your three numbers, I will gladly use this as an exampleto guide others. The resulting numbers will not be a guess, they are a calculation,and it is a reasonable expectation that your finished plane will bewithin one half inch of the calculation. -ww.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: UV exposure, realiy ck...