Today's Message Index:
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1. 06:32 AM - Re: Construction question for RV-8(A) Elevator (Gordon or Marge)
2. 04:53 PM - Elevator Skin Trailing Edge Bowing... (Matt Dralle)
Message 1
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| Subject: | Construction question for RV-8(A) Elevator |
-----Original Message-----
From: owner-rv8-list-server@matronics.com
[mailto:owner-rv8-list-server@matronics.com] On Behalf Of Garey Wittich
Sent: Friday, August 22, 2008 12:02 AM
Subject: RV8-List: Construction question for RV-8(A) Elevator
--> <gareywittich2000@yahoo.com>
My Drawing 4PP (circa 2000), which Vans has "somewheres", is confusing to
me:
1) This drawing shows the "DIMENSIONS of Elevator Spar E-602PP" (narrow
end) with cutouts of 3/4" X 5/8". What is this cut-out for - does not make
sense ??
Garey: The cutouts you refer to enable the bending of the spar web (away
from the spar flanges)to form a flange for attaching the rib. The rib has
its flanges trimmed to allow forming a flange to attach to the spar and
avoid interferance with the spar flanges.
2) Section B-B: Shows the E-602PP Spar mating to the aft end of the E-604
Rib. It looks like the aft end of E-604 Ribs "flange" is cut out so as to
not interfere with the E-602PPs "flange" at this point. Is this correct ??
Yes.
3) Section B-B: Shows a "dashed line" where the above Spar and Rib meet.
IF the aft end of E-604 Rib's flange is cut-out, what does this "dash line"
signify as nothing is there ???
It appears to signify nothing.
Need a little clarification HELP.
Thank you, Garey Wittich (310) 392-1682 Santa Monica, CA
Gordon Comfort
N363GC
Message 2
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| Subject: | Elevator Skin Trailing Edge Bowing... |
Dear Listers,
Backing into the garage today I noticed the elevator skin bowing at
the trailing edge in the review mirror because of the way the light
was hitting it. Basically what the deal is I think is that I bent
the trailing edge of the elevators more than necessary. So, when I
pulled the leading edge apart to fit it over the spar, I now have a
concave bowing effect between some of the bays. Van's goes to great
lengths in the manual to make sure that bend the elevator trailing
edges *enough*, but doesn't make mention of what is "too much". The
radius of the trailing edge is still within spec and there is no
cracking or stress marks. Its just bent too much and looks like of
stupid. Somehow, I did the rudder perfectly, but both elevators
suffer from the effect. I've included some pictures below.
What the common thought on this issue? Are the safety/flutter issues
with over-bending as I have done? What to do...?
Thanks!
Matt Dralle
RV-8 #82880
RV-8 Fuse/Wing QB Kit Delivery Next Week! (Ordered May 20 2008)
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