From your description it does sound like you have some misalignment of the wing posts &/or the tissue tubes. I would assume you are making very small adjustments to the wing incidence so it is surprising that you are experiencing such dramatic changes in the wing wash. Personally, I prefer to to set the wing at zero (or some fixed wing incidence) and make trimming adjustments with adjustable stab incidence, which should eliminate your problem.
Gary Hodson
-----Original Message-----
From: calgoddard <calgoddard_at_yahoo.com>
To: Indoor_Construction_at_yahoogroups.com
Sent: Mon, Jun 6, 2011 7:08 pm
Subject: [Indoor_Construction] Wing Posts
A continuing problem I have with some of my planes, e.g. a Cezar Banks LPP, is that the wash-in disappears or, in extreme cases, changes to wash-out as I adjust the forward wing post up or down to change the incidence of the main wing during trimming. , I prefer to
I use tissue tubes glued to the motor stick as sockets for the wing posts. I know this arrangement is standard.
All I can figure is that my wing posts are not perfectly perpendicular to the spars.
Or maybe the wing post sockets are not perfectly aligned? Perhaps I need to use jigs to align the tissue tubes when they are glued to the motor stick.
I typically glue on the front wing post and the back wing post using a jig or the edge of the building board to get the posts parallel to each other and perpendicular to the wing spars.
I then glue in the forward diagonal brace. I then insert the wing posts in the tissue tubes that are connected to the motor stick. I then glue in the rear diagonal brace to get the right amount of wash in. I would appreciate any advice on this issue.
Received on Tue Jun 07 2011 - 08:47:45 CEST
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