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f.kyle(at)sympatico.ca
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 Posted: Mon Sep 15, 2014 10:37 am Post subject: C of G |
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Good day
I'm having catnips about the Above topic. The thing is, the C of G is too far back. Because I opted for the 914 and a heavier prop (many Canadian strips are in the woods), I attempted to counter this extra forward moment by early digital dials and accepting extra weights aft - at the expense of some performance in cruise.
I did not add much to the aft weights mainly because of the large arm but was stunned to find it tail heavy. For this reason I appeal to early 914 mono drivers who have extended the tail wheel per the mod.
The extended arm prompted me to apply to the master who painted her to see if perhaps there were fifty coats on her back. To that end, I have detached and weighed each stab: port = 12.0 lb, starboard = 11.8.
If you have the above configuration Europa, and can handily measure the stabs, (or have such figures on record) I would appreciate the details. It might hint at a possible cause. Funny thing is, if I applied the 63lb tail weight to the arm which applies to the original tailwheel site under the stabs, the C ofG is happy....
[quote][b]
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davidjoyce(at)doctors.org
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| Posted: Mon Sep 15, 2014 1:24 pm Post subject: C of G |
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Ferg, can't give you an immediate answer to that but will
in a day or two if nobody comes up with an answer sooner.
Is your battery in the back? If not that would be a
solution. Mine is in the front + 914 + wobbly prop +
digital instruments and I needed 3lb of lead bolted to the
fin bulkhead (accessed through the Trim slots) to give me
what I consider to be the ideal APS C of G position of
58.5". You incidentally save quite a bit of weight in
heavy duty cable and battery box since you can simply
strap it on the bulkhead above pax feet with a 1" fence
around its bottom.
Regards, David
On Mon, 15 Sep 2014 14:38:43 -0400
<f.kyle(at)sympatico.ca> wrote:
| Quote: | Good day
I'm having catnips about the Above topic. The thing is,
the C of G is too
far back. Because I opted for the 914 and a heavier prop
(many Canadian
strips are in the woods), I attempted to counter this
extra forward moment
by early digital dials and accepting extra weights aft -
at the expense of
some performance in cruise.
I did not add much to the aft weights mainly because
of the large arm
but was stunned to find it tail heavy. For this reason I
appeal to early 914
mono drivers who have extended the tail wheel per the
mod.
The extended arm prompted me to apply to the master
who painted her to
see if perhaps there were fifty coats on her back. To
that end, I have
detached and weighed each stab: port = 12.0 lb,
starboard = 11.8.
If you have the above configuration Europa, and
can handily measure
the stabs, (or have such figures on record) I would
appreciate the details.
It might hint at a possible cause. Funny thing is, if I
applied the 63lb
tail weight to the arm which applies to the original
tailwheel site under
the stabs, the C ofG is happy....
|
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http://www.matronics.com/Navigator?Europa-List |
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