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Ah, more good info. Thaks,
Gary.
Terrence o'Neill
235/320
N211Al
----- Original Message -----
Sent: Tuesday, December 04, 2007 05:24
PM
Subject: [LML] Re: limit Gs for 235 (kit
#11)
1. The original 235 plans were for the wing tanks to be forward of
the wing spar in the forward "D" section and included an area in the most
outboard wing section rear of the wing spar (the fuel cap is out
there). A later option was presented for wing tank location, which
located the wing tanks in the first bay outboard of BL 50 ("center wing
tank"). In doing so, the next rib was to be moved in order to
attain sufficient fuel quantity of 11 gallons per wing. I
speculate, a big percentage of the 235's built utilized the optional wing tank
location. Sealing the leading edge tank arrangement while
installing the one piece leading edge wrap around wing skin
attachment to the wing spar was not an easy task.
Also, some 235 builders continued the "center wing tank"
location farther outboard for more capacity (way over factory gross when
full). Subsequently, the 320/360 airframe design utilized the
outboard of BL 50 wing tank location and extended it outboard for more
capacity.
2. The ailerons of the 235 and 320/360 are nearly the same.
The pushrod attachment is at the inboard end, same as the 320/360
arrangement. The 235 rod to aileron attachment utilized one
"L" bracket, whereas the 320/360 utilized two for more attachment
support.
Gary Edwards
LNC2
Medford, Oregon
Sent: Tuesday, December 04, 2007 4:23
AM
When going through the
outer wings vs the builders' book I noted many differences in the use of
areas for fuel. The book showed fuel ahead of the spar, and in
the outer bay past the aileron bellcrank the book showed fuel between main
and rear spars out to the tip. But in the wing itself the
fuel area stopped at the aileron bellcrank rib... and each wing tank was
marked as about 18 gal. per side. Also, the wing has the aileron
bellcrank outboard of the mounting rib vs inboard in the
book.
Is there still a way to
check carbon sparcap thickness, and whether there are cap strips on
the ribs? ... probably too late to check, as the wings are on
now.
Terry,
You are getting much better information from those more familiar with
235 internals than I could give you. For example, Tim Jorgensen's
commentary on the wing test data.
The 320/360 aileron push rod is at the inboard edge of the aileron
while the 235 might have that placed further outboard. That would
allow for a bigger wing fuel capacity. I only get 17 gallons in each
wing up to the rib that is positioned at the inboard edge of the
aileron. BTW, the book may have an error (gee, like that never
happened before).
When the ribs were installed into the wing's top skin, two BID was laid
up on each side of the rib. You should be able to see this on the top
skin when you look into the aileron push rod access door. If the cap
strip technique was used, then the bottom skin would have pre built flanges
bonded to the bottom skin and its appearance would be similar to the
rib/top-skin joints. Of course, BID could have been added thru the
push rod access door so you may have to look into the wing fuel tanks with a
lighted mirror to compare the visual appearance of the top and bottom
rib/skin joints.
Scott
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