Search found 6 matches

by Bill Church
Sat Sep 28, 2019 10:54 pm
Forum: Pietenpol Builders Forum
Topic: 4130 vs 1020
Replies: 6
Views: 691

Re: 4130 vs 1020

Non-aircraft material? 1020/1025 steel tubing actually has a good deal of history in aircraft structures, such as J3 Cub and Aeronca Champ/Chief. There's nothing wrong with using 1020 steel where called for in the plans. Finding 1020 steel tubing in the specific sizes called for, in small quantities...
by Bill Church
Tue Jan 22, 2019 4:31 pm
Forum: Pietenpol Builders Forum
Topic: Old Information for New Pietenpol Pilots
Replies: 9
Views: 1822

Re: Old Information for New Pietenpol Pilots

In case anyone wants them, here are PDF versions of those three documents.
Naturally, the weight and balance spreadsheet loses all of it's functionality, when converted to a PDF document.

Bill C.
by Bill Church
Sun Nov 04, 2018 9:38 pm
Forum: Pietenpol Builders Forum
Topic: Waterjetting
Replies: 13
Views: 2021

Re: Waterjetting

Tom, Bending sheet metal with the grain isn't actually a "NO NO", it just has to be approached differently. When bending with the grain, a larger bend radius must be used than when bending transverse to the grain. However, for optimum strength, and the sharpest possible bend radius, bends should be ...
by Bill Church
Sun Jun 24, 2018 10:51 am
Forum: Pietenpol Builders Forum
Topic: Wing Finishing Advice
Replies: 10
Views: 1791

Re: Wing Finishing Advice

1/16" Aircraft Ply for the leading edge. I didn't understand your original comment about the need to "put flax where the rib meets the spar". Now that I see your photo I understand what you were referring to ... but I also don't understand why it would be needed. This is not a structural joint. Some...
by Bill Church
Mon Jan 29, 2018 9:18 am
Forum: Pietenpol Builders Forum
Topic: Cabane Strut Fittings
Replies: 2
Views: 903

Re: Cabane Strut Fittings

Dan, No, you're not a fool. The detail for the fittings shown in Vi Kapler's drawing are the same as shown in the original plans, and are equally as strong as the versions made with two U-brackets ***provided the welds are done properly***. Many builders opt for the two U-bracket method as a "belt a...
by Bill Church
Mon Apr 24, 2017 8:04 pm
Forum: Pietenpol Builders Forum
Topic: Control cable slack
Replies: 2
Views: 1112

Re: Control cable slack

George, There aren`t any control deflections shown in the plans. Practically, they will be limited by the actual movement that the pilot can physically move the stick fore and aft. I realize that doesn't really answer your question, but it does establish the maximum possible physical movement limits...