Original Posted By: Rcaprd(at)aol.com
The GN-1 plans show the wing attach fittings being .065" thick 4130 steel.There is a reinforcing washer welded on the end of the fitting where theattach bolt goes. The plans state that the washer gets welded on the wingspar end fittings only, not the fittings that bolt to the center section.Other than the tiny bit of work involved and the miniscule amount of weight,can anyone see any conceivable reason for not putting the washers on thecenter section fittings also?How is it done on the regular Pietenpol wing? I only have the GN-1 plansand the Sky Scout plans, not the regular Piet plans.I was also going to weld a reinforcing piece on the bottom fitting on thecenter section spars where they attach to the jury struts. There is not alot of material around those bolts and there is a good bit of load o thosetabs.Brian KrautEngineering Alternatives, Inc.www.engalt.com________________________________________________________________________________
Pietenpol-List: wing attach fittings
Re: Pietenpol-List: wing attach fittings
Original Posted By: Oscar Zuniga
Subject: Re: Pietenpol-List: wing attach fittingsIn a message dated 10/16/2007 8:36:44 PM Central Daylight Time, brian.kraut(at)engalt.com writes:Other than the tiny bit of work involved and the miniscule amount of weight, can anyone see any conceivable reason for not putting the washers on the center section fittings also?I've never seen those plans, but it may be that it changes the molecular structure of the steel. I think that's the reason that washers are braized onboth ends of the lift struts of the Pietenpol, although the wall thickness is much less than .065"Chuck G.________________________________________________________________________________
Subject: Re: Pietenpol-List: wing attach fittingsIn a message dated 10/16/2007 8:36:44 PM Central Daylight Time, brian.kraut(at)engalt.com writes:Other than the tiny bit of work involved and the miniscule amount of weight, can anyone see any conceivable reason for not putting the washers on the center section fittings also?I've never seen those plans, but it may be that it changes the molecular structure of the steel. I think that's the reason that washers are braized onboth ends of the lift struts of the Pietenpol, although the wall thickness is much less than .065"Chuck G.________________________________________________________________________________