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This morning EAA Vintage Chapter 27 had their monthly (during summer months) pancake breakfast.
Kerin and I went along with Kerin's folks. My buddy, Scott, and his two boys, Isaac and Luke
showed up in his very non-spam like Cessna 140. I snapped a photo of his departure.
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Afterwards, I walked over to Tom Webster's hanger. Tom was hosting a prop balancing weekend
for a bunch of RV guys. Here's Tom Ervin taxiing out after getting his prop balanced. Everyone
that had the procedure done indicated quite a bit of improvement.
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If you need your prop balanced, just give this guy a call. Bobby Hester. Really nice guy, too.
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After going to lunch with some of the folks getting their props balanced, Joe Strausbaugh (RV-7 builder and
flyer) was nice enough to loan me his 120 degree countersink. I needed one of these since the pop rivets
in the canopy frame are CS4-4 rivets which have a 120 degree head rather than the 100 degree that the AN rivets have.
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Since nearly all the holes are on a curve, I knew the countersink cage would require constant adjusting to
get the depth right, so I elected to just remove the shaft from one of my microstop countersinks and
control the depth by hand.
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After trying to countersink a couple of holes in one of the curved sections and getting poor results, I made
a couple of test countersinks in this piece of scrap. The countersink didn't seem to want to cut the aluminum
and left a pronounced ridge around the edge. When I examined Joe's countersink under a loupe, it appeared
quite dull. I decided to hold off on the countersinking and buy a new one.
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