Jeff, my mechanic has riveted the large rivets on the spars with a 7X rivet gun, on 2 Ercoupes so far. No problem at all. The 7X has such a large displacement it requires only a few hits to get a nice bucktail.
Syd Cohen Ercoupe NC94196 Wausau, WI [EMAIL PROTECTED] wrote: > I've recently discovered the dreaded exfoliation corrosion in my left wing > upper spar cap. Univair is sending an engineering drawing on the spar > assembly, but stated there is no formal repair method developed for spar cap > replacement. In reviewing the spar assembly, my biggest concern is the large > rivets required for the wing attach fittings. Univair's engineering > department warned that on new spar assemblies these rivets must be pressed on > in one continuous swage (hammering causes the rivet to split). Univair uses > their large hydraulic brake for this. Does anyone have experience in this > area? > > Does anyone have a spare left upper spar cap, left spar, or left metal wing > they are willing to part with? > > Jeff DeGange > Grounded in Aiken, SC
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