Brodhead Pietenpol Association

Original Posted By: Michael Conkling
I got the le problem figured out... Use the front most points specified on the offsets and draw a line betweenthem. That defines the le slant. I arrived at that bymeasuring the le stock and the distance between the pinsthat I used to mark the points. Both were 2".Next questions. My kit has 3/4" spars. Looking at the3 piece wing plan this looks ok. I am planning onkeeping the spacing between the spars at 27 3/4" asspecified on all of the drawings. This is the spacingused for 1" spars. By keeping the spacing at 27 3/4 thatmeans that the other edges of the spars move in by 1/4"each. I need to verify that the 3/4" spars are not builtup to 1" at the rib stations. It doesn't look that waybut I want to make sure.Are the 3/4" spars left at 3/4" and not built up at therib stations or routed between them?Is it correct to keep the spar spacing at 27 3/4" and let the slack come from the outboard sides? It lookslike this would have the minimum impact on things likestrut spacing.DaveFirst capstrip gets bent on the jig tonight...________________________________________________________________________________

Original Posted By: Les Lampman
Dave- I was talking to Gary Price of Yesterday's Wings the other night withthe same question- The 3 piece wing plans show 3/4 inch spars, originalplans are 1 inch. Gary said that it is important that the centerline of the3/4 spars are in the same place as the centerline of the 1 inch spar, orthere will be problems with the struts. He suggested gluing a piece of 1/8plywood at each point where the rib contacts the spar to keep spacing correct.Anyone else that can verify this idea?Al Swanson>I got the le problem figured out... Use the front most >points specified on the offsets and draw a line between>them. That defines the le slant. I arrived at that by>measuring the le stock and the distance between the pins>that I used to mark the points. Both were 2".>>Next questions. My kit has 3/4" spars. Looking at the>3 piece wing plan this looks ok. I am planning on>keeping the spacing between the spars at 27 3/4" as>specified on all of the drawings. This is the spacing>used for 1" spars. By keeping the spacing at 27 3/4 that>means that the other edges of the spars move in by 1/4">each. I need to verify that the 3/4" spars are not built>up to 1" at the rib stations. It doesn't look that way>but I want to make sure.>>Are the 3/4" spars left at 3/4" and not built up at the>rib stations or routed between them?>>Is it correct to keep the spar spacing at 27 3/4" and >let the slack come from the outboard sides? It looks>like this would have the minimum impact on things like>strut spacing.>>Dave>First capstrip gets bent on the jig tonight...>>________________________________________________________________________________