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Bill Wade wrote:
This picture shows the end of the LH elevator- --
Bill,
I've had difficulty interpreting your photograph, but your description is similar to a problem that I have with my horiz stab and elevator not matching at their relative distal extremities. (Lancair IV-P, started in 2002 at the Builders' Assist.) I had ascribed it to over clamping the main portion of the elevator when it was closed out at the Builders Assist. The result is a depression in the neck of the elevator (just inboard of the weight) and a ballooning of the area where the weight is located.
I think that the horizontal stabilizer is also distorted at the outboard end.
I talked this over with Lancair. (I don't remember who I talked with.) They said, in essence, "They're all like that. But it's really not aerodynamically important." I've seen a lot of IV's and I don't think any are like that when they are finished.
I had resolved to grind down high spots (around the counter weights), reinforce the weakened carbon fiber and micro the low spots (close to 1/4 inch.) in both the elevator and the horizontal stab to make them match and not have a "dip" in the middle. Looks to me like a really thick layer of micro (up to 1/4 inch) will be needed.
I haven't tackled that task yet, 'cause I was hoping someone would find (and teach me) a better way.
Barry Knotts
LIV-P, Conti TSIO-550, building.
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