Brodhead Pietenpol Association

Original Posted By: "Clif Dawson"
These pages are from Engineering for the AmateurAircraft Builder by Raoul Hoffman.I finaly scanned them for you guys strutting about.Don't go crosseyed now! :-)Clif"The greatest athlete I ever saw, pound for pound, slept beside my bed and drank out of my toilet."ANON________________________________________________________________________________

Original Posted By: "Clif Dawson"
What you see here is one of those little benchtop drill pressessitting on my flat and level building bench. With a spar you canblock up the far end of the spar and use the DP table to levelthe spar till it's 90=B0 to the drill bit. I would put a long housebuilding level on the spar and once leveled turn the levelaround and check again. If there's a difference then 1/2that difference is level. The most important, though, is thatthe drill is 90=B0 to the plank regardless of how level the thing isor isn't.Clif"Originality is the art of concealing your source." ~ Thomas Edison The best way to drill spars is lying flat on your drill press, and use the fittings as drill guides. . Double, tripple, check all measurements and layouts before drilling those pricey spars. Long winded again, Shad ________________________________________________________________________________

Original Posted By: "coxwelljon"
Thanks for that explanation. My own understanding of architectural structurestells me that this member is going to be critical in compression. I will workout the angles in cad and measure where the jury struts attach based on the waymy wings are built. I believe the main reason for the jury struts is to shortenthe L/R ratio for the strut action in compression.Thanks again--------Jon CoxwellRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: strut stress

Original Posted By: "Bill Church"

Original Posted By: Ken Howe

Original Posted By: Jeff Boatright
I'm running windows XP but what I'm saying here shouldhave an equivalent in other systems.The article was scanned as a jpeg and sent to my picturefile. In there I can double click any image and it comes upin it's own window. This image can then be enlarged up to400%. So enlarging the chart till it's comfortable makesit quite readable. For me that's 150-200%. Beyond that itbegins to get fuzzy.ClifMarriage is a relationship in which one person is always right and the other is usually the husband.> > The text in the body of the article was not a problem to read - it's the> little stuff in the chart that's a challenge .> Bet your OCR software can't figure that stuff out.>________________________________________________________________________________Date: Tue, 20 Oct 2009 22:43:46 -0400