Bill, that's for your reply. I'm hoping I can trouble you with another question or two. I've enclosed 2 pictures of my copilot side weights yet to be trimmed and one of the pilots side already trimmed. You can see how much I had to trim in order to get the full 20 deg travel. Also you can see I put the nuts on the wrong side... I figured that one out quickly. I wondering if I have mine installed upside down from yours. Can you tell from these pictures?
Bob Pastusek had an idea to try. To install them in the bottom of the flange and check clearance. Worth a try. Did you also cast the center (long section) of weight or are those from Lancair? Thanks, joe Trepicone
Hi Joe-
I had
the same problem- my weights are 2007 vintage, similar to yours I’d guess. What
I did was to carve a mold from pine and cast additional weights. I coated the
aileron pockets with white primer and swung the ailerons to find where they hit,
filing high spots down until I got a few degrees of extra travel with nose-heavy
ailerons (in primer). When it was done I covered the weights with BID as well as
bolting them. After the finish coat I’ll readjust. –Bill Wade
Sent: Tuesday, March 19, 2013 8:45 AM
Subject: [LML] Aileron balancing
Hi Group, I’ve checked my aileron travel distance after
balancing them and discovered I did not have enough travel distance downward
(only about 17 degrees and not the required 20 degrees) however I have plenty in
the upward direction. The interference was coming from the lead counter
weight itself hitting the top wing, inside wing skin. (the problem seems
slightly worse on the Pilot side than the copilot side) I used the
Lancair cantilevered counter weights that screw to the top of the aileron flange
and not the older style that bond to the underside of the flange. After
shaving away enough weight to provide the proper downward aileron I need to add
more weight…. About 30% more I’m estimating. The weight installation
instructions say to bevel the edge as required. I had to do more than just
bevel the edge.
I’m going to have to add the older style weight to supplement
the cantilevered weight. Has anyone else had this problem? I can’t
imagine that moving the weight forward or aft would make much difference but
maybe there’s an optimum location I haven’t found. Any thoughts would be
appreciated.
Joe Trepicone IVPT
(trying to get my engine started with 90% to
go!)
<7-18-2010 007.JPG>
image.jpeg
image.jpeg
image.jpeg
|