----- Original Message -----
From:
Mike Midkiff
To: Tandy
C. Walker
Sent: Thursday, November 01, 2007 6:43 PM
Subject: Re: 43 J-3 Cub Tissue Covering the Rudder
Tandy
Now pin down to a flat surf and let it cure out 4-5 days before use
Mike
I received the above e-mail from Mike concerning
rudder surface warping. I checked the rudder surface for warps after the
first coat of dope had dried and there was none yet. So I put a second coat
of 50/50 dope on the rudder and let it dry to the touch for about 30
minutes. I placed the doped rudder on a piece of wax paper and folded the
wax paper over on top of the rudder. I placed 1/8" sheet balsa on either end
of the 1/8" thick rudder and placed four 1/4" square spruce strips on the
top layer of wax paper as shown below. Notice the second strip from the top
is resting over the rudder's main spar.
Then I place a piece of sheet spruce on top of
the four strips and weighted the whole thing down with two square steel
block as shown below. I will leave this for five days while the two coats of
dope on the yellow tissue cure out as Mike
suggested....................Tandy
