Do I have some KR-2 root spars getting mounted ! YES. along with Diehl wing
skins and in doing so I've learned WAF's and their bolts do get some major
corrosion developed in just 1-2 years and with some bad choices of
VNE, and thinking the plane can take a bit more 🙄THEN Flutter at any
control surf
On 5/17/2022 7:39 PM, laser...@juno.com wrote:
As it is, my guess is
the wing didn't at all "come off". The aileron and some fiberglass and
wood debris came off . . . not the wing itself.I wasn't there so I'm
entirely open to correction.
Mike
As almost all of us know, flutter can cause failure of control surfaces
and sometimes the attachment points the control surface is attached to.
Neither of the two cases that have been mentioned cause primary wing spar
failure. The KR wing remains one of the strongest aircraft wings ever
designe
On 5/17/2022 2:59 PM, Kayak via KRnet wrote:
so now we have _two_Â catastrophic spar fails... interesting...
+++
Spar failure was not the initial cause in either accident but the result
of aileron flutter. Marty Roberts flig
I find this rather fascinating after looking into all the Zenith accidents not
too long ago.
Ryan Derbes
Superintendent
J.B. Mouton
On May 17, 2022, at 3:00 PM, Kayak via KRnet wrote:

so now we have two catastrophic spar fails... interesting...
On Tue, May 17, 2022 at 3:50 PM
mailto:shaff
so now we have *two* catastrophic spar fails... interesting...
On Tue, May 17, 2022 at 3:50 PM wrote:
> Brackets for my aileron balance weights, are 1/8th inch thick 4130
> steel. At the first KR Gathering, held in CA, Brad Hummel had an aileron
> fail, resulting in a wing failure. FAA Inspect
Brackets for my aileron balance weights, are 1/8th inch thick 4130
steel. At the first KR Gathering, held in CA, Brad Hummel had an
aileron fail, resulting in a wing failure. FAA Inspectors determined
the aircraft was doing approximately 240 MPH. ( Airspeed needle was
stuck there.) The Main Spar, r
Nothing wrong with the way the plans show you how to balance them. It’s the
bracket I didn’t like.
Phil.
Sent from my iPhone
> On 17 May 2022, at 11:38, John Gotschall via KRnet
> wrote:
>
> 
> Can anyone recommend a good book or source for info on how to calculate the
> correct control b
I have never liked the plans for the balance arm.
But saying that, I have not heard ( till SA crash) any serious problems. Many
have found cracking in servicing ( that’s why we Servise them)
I do my own, 1/8 6061 Alumimium with a gusset welded around the outside of the
bracket. Or thin 4130 wi
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