David Zucker wrote:
Can anyone give me the specifcs on the legal size battery for an F3B Contest. 500
CCA?
5.3.2.2 Launching
c) The power source shall be a 12-volt lead/acid battery. The maximum cold
cranking ampere capacity should be not more than
275 Amperes DIN, or
310
Andrew E. Mileski wrote:
David Zucker wrote:
Can anyone give me the specifcs on the legal size battery for an F3B Contest. 500
CCA?
5.3.2.2 Launching
c) The power source shall be a 12-volt lead/acid battery. The maximum cold
cranking ampere capacity should be not more than
Just another thought on color. I was watching some ravens soar at a
distance and angle we often fly our planes. I was struck how well they
could be seen both on the top and bottom in the turn. The gloss black
showed up well at all angles (the black gave good contrast and the shine
gave some
Hi Guys,
A lot of you have suggested ways for me to use the .dat files in Compufoil
but you have all just told me how to import them into the coords folder and
then bring them up. That has not been a problem all along. It is when I
try to open the .dat file is when I get the error message
One thought that favors having SOME contrast
between tops and bottoms or SOME assymetry in a
glider color scheme is that with ALL black, even
if it's very visible, it seems that you run the
risk at high altitudes/distances of the 'image
reversal' problem in which a silhouette-only image
can be
Have you tried changing the file name as I suggested. I've done this. All
you should need to do is change the file name. Example (filename.dat)
change it to (filename.cor). If you have not tried this I suggest you do.
After you change the file name it will pull up in Compufoil just like any
--- Rick and Jill [EMAIL PROTECTED] wrote:
Have you tried changing the file name as I suggested.
After you change the file name it will pull up in Compufoil just like
any
other .cor file.
If it gives some kind of error message box, just press OK and load the
file anyway. Once you get it
--- Scobie Puchtler or Sarah Felstiner [EMAIL PROTECTED] wrote:
with ALL black, even
if it's very visible, it seems that you run the
risk at high altitudes/distances of the 'image
reversal' problem in which a silhouette-only image
can be mentally reversed (as to which wing is
closer for
Pat,
I just checked and it was .arc files that I was changing file (extension)
names on. After changing the file extension from .arc to .cor these pulled
up just fine in Compufoil, although my version is a later one than yours so
not sure if this would work. This also may not work with the .dat
If you ever left your carbon-skinned wing upside down in the sun, you know
it will get so hot that a foam core will deteriorate under it and be ruined
or it will at least delaminate in spots. Same reason a wing black on top is
bad news.
RCSE-List facilities provided by Model Airplane News.
There's a very good reason that full scale sailplanes
are white. It has to do with the strength of epoxy at
elevated temperatures...ie. it goes down rapidly as
the temp goes up. The first PIK-20's were made in
white, orange, or yellow, due to the thermal set /
cure nature of the epoxy used, and
At 11:41 PM 3/16/2002 -0500, you wrote:
Pat,
I just checked and it was .arc files that I was changing file (extension)
names on. After changing the file extension from .arc to .cor these pulled
up just fine in Compufoil, although my version is a later one than yours so
not sure if this would
Mark,
Mark Drela wrote:
[snip]
One very important item I left off my list is the
max flap thickness at the hinge line. This has
a big effect on the torsional stiffness. Tom Clarkson
is using an extremely thin wing, so that's likely
one factor there. Maybe Mike Fox's wing is a lot
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