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Re: Pietenpol-List: Re: how to reinforce stringers so they don't bend
Posted: Thu Jan 19, 2012 6:55 am
by matronics
Original Posted By: Bill Church
Ouch!Is the fabric 1.7 ounce?Thanks for posting the shot.Mark StanleyJapan-----Original Message-----
Re: Pietenpol-List: Re: how to reinforce stringers so they don't bend
Posted: Thu Jan 19, 2012 7:27 am
by matronics
Original Posted By: "womenfly2"
All the "dacron" instructions say to do the final shrinking at 350 degrees on the iron. Are you saying this is too much? Chuck----- Original Message -----
RE: Pietenpol-List: Re: how to reinforce stringers so they don't bend
Posted: Thu Jan 19, 2012 8:27 am
by matronics
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Y'all are worrying too much again. We don't know anything about thePietenpol in that picture. It may have had very thin stringers, or it mayhave been covered with cotton which was glued on too tight, and then overtime the dope tautened more than anticipated (butyrate dope continues toshrink for years). If you use dacron, follow the manufacturer's guidelinesfor shrinking - not the advice you think you hear on this list.Mike Cuy gave good advice to add little pieces between the stringers. Ittakes little time and adds almost no weight. I did it on mine, per hisadvice. Was it necessary? The only way to know for sure would be to addthe pieces on one side but not the other and see if the side withoutreinforcement warped. I wasn't that curious.You can see these pieces in this photo:Jack PhillipsNX899JPSmith Mountain Lake, Virginia-----Original Message-----
Re: Pietenpol-List: Re: how to reinforce stringers so they don't bend
Posted: Thu Jan 19, 2012 11:50 am
by matronics
Original Posted By: Jack Phillips
Jack, you wouldn't put those pieces between stringers high enough for the fabric to touch, right? C ----- Original Message -----
Re: Pietenpol-List: Re: how to reinforce stringers so they don't bend
Posted: Thu Jan 19, 2012 12:05 pm
by matronics
Original Posted By: "Bill Church"
Looks to me like the plane might be a modified GN-1. C----- Original Message -----
RE: Pietenpol-List: Re: how to reinforce stringers so they don't bend
Posted: Thu Jan 19, 2012 12:28 pm
by matronics
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Correct. They are perhaps 3/8" below the tops of the stringers. Also inthis picture I notice that you can see the little blocks in the tail ribsthat Mike Cuy mentioned as well.Jack PhillipsNX899JPSmith Mountain Lake, Virginia _____