Brief Description: Rework of W-1212 Hinge Assemblies
Decided to rework the W-1212 hinge assemblies. When I assembled them I ended up with a gap at the top of the one assembly. Ended up measuring the gap which was only on one of the side plates. On the first one which did not really appear noticeable I measured it with a feeler gauge and it is ~0.001”. The second one had a more noticeable gap that could be moved slightly when squeezed again only on one of the side plates. This one measured `0.017 at the top edge. Reading on the VAP forum it was suggested this comes from squeezing the flush rivets and the remedy is to slight bend the top end of plate slightly prior to riveting. Both bearing were seated well and show no signs of slop. The bearing pivot and turn very freely so that part was OK. In any event I decide to redo them so I had ordered new parts from Vans. Deburred and filed the new parts. Countersunk the rivet holes specified in Figure 5 page 14-02. I marked the 4 holes on each pair that got countersunk and of course Murphy came into play and I ended up doing the hole that was not to be countersunk on one of the parts. Will call Van’s Monday to see if that is acceptable to use another flush AN426 rivet in that hole without recessing the shop head side. I have seen that others have used flush rivets in the 3rd hole in photos that I have seen of other projects even though the plans call for and AN470AD4-7 rivet in that 3rd hole. Need to check and double check even if you mark something correctly! Photos show the gap on both the parts. The camera seems to make the gap look worse, Hopefully I can make the new set better....
