Brodhead Pietenpol Association

Original Posted By: "K5YAC"
Mark,Nobody will even notice the girls standing next to the plane with wheels like that.Fantastic.--------Scott LiefeldFlying N11MS since March 1972Steel TubeC-85-12Wire WheelsBrodhead in 1996Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Tubing Coping

Original Posted By: Jim Markle
Very cool!I've got about 6 years in a bike shopand am really looking forward to lacingmine--------Earl BrownI may not have gone where I intended to go, but I think I have ended up where Iintended to be.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Thu, 11 Oct 2012 13:38:32 -0500Subject: RE: Pietenpol-List: Tubing Coping

Original Posted By: Jim Markle
I suppose that one could change the dimensions to end up with a correct OD print.For example... if I were using 1.5" tubing, couldn't I enter 1.6" tube with.100" wall and end up with a template suitable for the OD of my 1.5" tube? Might try that on a test piece. The software that my friend has actually prints two lines... one for the OD andanother for the taper needed to achieve the proper ID fit.--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Thu, 11 Oct 2012 14:11:43 -0500 (GMT-05:00)

Original Posted By: "K5YAC"
JohnI'll let you know when I'm ready to startno the wheels and you can get ahold of"That guy"!--------Earl BrownI may not have gone where I intended to go, but I think I have ended up where Iintended to be.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Tubing Coping

Original Posted By: "tools"
Jim... where did you go? Am I missing something on the tubing coping?--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Tubing Coping

Original Posted By: Oscar Zuniga
I'm pretty certain it pertains to the fact that the fit of the outside of the tubingisn't as important as the fit of the circumference of the inner diameter.That's because any gap visible from the outside can be welded in, in fact, purposelycreating that situation gives you a little "v" to weld in.In the case of a good fit with the outside diameter, but poor fit on the inneressentially leaves you with a thinner pipe to weld on.In any case, your reasoning is correct. With this program (pretty cool by theway, nice find!) I'd set the thickness of the tubing to .001 for an accurate patternto follow for the outside diameter. Then, try to visualize exactly whatis going on when you grind, file or cut to shape to make sure you don't "undercut".If you delibrately err the other way, you'll merely have to file awaya portion of the thickness of the tubing as you fit to get a perfect union. You can then rest assured you'll have a good fitting inner and outer diameters,and will weld up securely.Make sure to "clock code" the patterns so they orient correctly, like welding onyoke fittings on a drive shaft.You could probably also youtube how to cope home molding to help you visualizewhat's going when you cope. There are actually other methods of generating theshape to follow right on the tubing, utilizing only miter cuts on an abrasivesaw, cold saw, bandsaw, whatever. Knowing how that works will make using this shape generation method, make moresense. Also, play around with the tubing thickness and watch the shape change.The minimum thickness it will accept is SOMETHING bigger than zero, and SOMETHINGless than 1/2 the diameter of the tubing.Read this topic online here:http://forums.matronics.com/viewtopic.p ... __________

Original Posted By: "K5YAC"
How does one go about getting on the circulation list for the Official Fish Scales? It seems that the Scales have so far been limited to use by prop carvers=2C but I would be interested in knowing how Scout fares with the A75 and wood prop. I also have a Prince prop for it and would be interested in a "fish head to fish head" comparison between the two if I had the scales available and could run one and then the other.I will not have Scout up here and ready for testing until November=2C but would be happy to pay shipping over and back if the Official Scales are available to non-carvers.Oscar ZunigaMedford=2C ORAir Camper NX41CC "Scout"A75 power ________________________________________________________________________________Subject: Pietenpol-List: Re: Tubing Coping

Original Posted By: Michael Perez

Original Posted By: "Steve Ruse"
Soooo... I'm reading through the notes page for the Tube Coping Calculator I postedat the beginning of this thread... you know how it goes... open package,play with new tool and THEN read instructions. Anyhow... it clearly states right in the notes that, "specifying the tube's wallthickness makes the cut fit to the inside diameter of the tube, which makesit easier to fit, and makes a nice notch for welding." Perhaps THIS is the reasonI had good success with my first attempt? LOL! I still visualize a nicely contoured notch with flush fitting edges that are taperedto the mating tube, which would mean that the ID and OD would be considered,but I can see where in my current application (landing gear), where heavywalled tube is going to be welded, the ID and notched edge is preferred.--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________