Today's Message Index:
----------------------
1. 04:04 AM - Re: Horiz Stab cracks (cpayne1@joimail.com)
2. 05:53 AM - Re: Horiz spar (Ernie)
3. 07:57 AM - Re: Yak-List Acro and Spins (WSC/Herb Coussons)
4. 09:00 AM - Re: Front canopy removal (Doug Sapp)
5. 09:58 AM - Metric Screws (TC Johnson)
6. 01:24 PM - Heads Up - OSH '05 change (cpayne1@joimail.com)
7. 03:35 PM - Re: Heads Up - OSH '05 change (Terry Calloway)
Message 1
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| Subject: | Re: Horiz Stab cracks |
--> Yak-List message posted by: "cpayne1@joimail.com" <cpayne1@matronics.com>
Ernie,
I have a copy of the original paperwork for the "kit" as
approved by a DER as a fix. The other 3 A/C in the box with
mine came in were owned by Alan Beaver & Bill Thorndale. It
was this batch where the problem was first reported.
Additionally, I had guys from the AA mechanics school make
up a set of false ribs to distribute and dampen some of the
load so there would not be a concentrated point.
Inspection s/b done at least annually. No problems after 9
years now but I still keep looking.
Craig Payne
Message 2
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--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
Yes I did as a matter of fact )but I cheated last night and had a few cigars
:)
I have this really good IA on the field who I trust to do my annuals, I'll
ask him to do the dye penetrant test next time.
Thanks
Ernie
----- Original Message -----
From: "Terry Calloway" <tcalloway@datatechnique.com>
Subject: Re: Yak-List: Horiz spar
> --> Yak-List message posted by: "Terry Calloway"
<tcalloway@datatechnique.com>
>
> Ernie,
> The last I heard, annual was the same as every year.
>
> The dye penetrant test is done on you skull.
>
> You better leave both jobs to a professional though.
> tc
>
> ps Did you stop smoking again. :)
>
>
> >>> ernest.martinez@oracle.com 10/13/2004 2:04:13 PM >>>
> --> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
>
> Thanks Doug,
>
> I do take off the fairings every year and do give the area a thorough
> inspection. Should I be doing a dye penetrant test?
>
> Ernie
> ----- Original Message -----
> From: "Doug Sapp" <rvfltd@televar.com>
> To: <yak-list@matronics.com>
> Subject: RE: Yak-List: Horiz spar
>
>
> > --> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
> >
> > Ernie,
> > The cracks appear near the center of the horiz close the points where
> it
> > attaches to the fuse. Inspection can be done by removing the
> fairings
> which
> > you should have off during annual anyway. If your aircraft is un
> cracked
> or
> > without this mod, this inspection should be done annually. IMHO even
> if
> you
> > have the mod you should inspect the area carefully every year also.
> I
> was
> > told that these cracks were the result of the PLAAF cadets snap
> rolling
> the
> > aircraft. In ACM high g turns that result in a hard buffet and a
> snap to
> > inverted are also hard on the horiz of aircraft with un braced tails
> such
> as
> > the CJ6. In the past there has been much talk and many opinions as
> to
> > rather the current heavy duty "stiffener" is excessively stiff and
> might
> > move the stress points outbd to an area (rib attach point) not meant
> to
> > carry the loads. I would have to agree that it might be over built
> and
> > should be instead made out of a material such as .032 2024-T3 and
> not
> > stainless steel.
> >
> >
> > As long as I am here:
> >
> > FOR SALE
> > 2001 CJ6A N700YK One of only 3 new CJ6's in civilian hands in the
> world.
> > 22 hours Total airframe
> > 22 hours 1st O/H 285 hp engine,
> > 22 hours factory new propeller
> > Sump quick drain mod
> > New Hooker harnesses
> > Sigtronics war bird intercom
> > KY96 comm
> > AT150 with encoder
> > ELT
> > Stainless steel screw kit
> > Bladder tanks (64 gallons)
> > rear canopy seal kit
> > If you don't want the 285 and prop I'll buy it back for 9K.
> >
> > Price 130K FOB Omak WA
> > will deliver for expenses.
> >
> > Always Yakin,
> > Doug Sapp
> >
> > -----Original Message-----
> > From: owner-yak-list-server@matronics.com
> > [mailto:owner-yak-list-server@matronics.com]On Behalf Of Ernie
> > To: yak-list@matronics.com
> > Subject: Yak-List: Horiz spar
> >
> >
> > --> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
> >
> > Well I checked the archives and saw a thread re: the doubler. I even
> found
> > myself with an unanswered post asking where to look for cracks. One
> > "authority" said that they check for cracks with dye penetrant. My
> question
> > is this, how do you check without pulling the skins off of the
> horizontals.
> > This isnt something that can be done at annual.
> >
> > Ernie
> >
> >
>
>
Message 3
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| Subject: | Re: Yak-List Acro and Spins |
--> Yak-List message posted by: "WSC/Herb Coussons" <drc@wscare.com>
I also have a TW. SN 17 with electric as well as air start. The battery is
forward in my plane. I have done more acro over the past 6 mos including
spins - no problems with 2 people. I have only done inverted with Sergei in
the back seat and no problems either. In fact he had some very positive
comments about the control authority and recovery capability.
Herb
----- Original Message -----
From: "Steven A. Dalton" <sdalton@goeaston.net>
Subject: Yak-List: Re: Yak-List Digest: 11 Msgs - 10/12/04
> --> Yak-List message posted by: "Steven A. Dalton" <sdalton@goeaston.net>
>
> >Hey, I have a question for the TW owners. Is it true that spins are
> >
> >not recommended with someone in the back seat? That this was never
> >
> >tested at the factory?
>
> I own the first TW made and have flown it for about 330 hours. The
following are my observations.
> I don't believe the factory did any spin testing.
> The CG was near the aft limit for acro with two people aboard. I added
electric start, in addition to air, and that helps move the cg forward.
Also, relocating the batteries forward makes this a total non-issue. I
*think* the factory has made the battery relocation standard to move the cg
forward.
> Since acro is prohibited with fuel in the aux tanks, and the main tanks
hold 40 gallons, that really isn't an issue.
> I know of one other TW owner, who in addition to myself, has done all
types of spins (upright, inverted and flat) with two people. No different
than the old -52 with the nose training wheel.
> I do LOTS of acro in my TW and love it.
> Steve Dalton
> ---------------------------------------------
> This e-mail was sent using VisualOffice 4.01
>
>
Message 4
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| Subject: | Front canopy removal |
--> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
Graeme,
Kelly, as usual is spot on but he forgot one thing: Use a newly sharpened
screwdriver. The slot in the bolt is both narrow and shallow.
Good luck.
Always Yakin,
Doug Sapp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Graeme Frew
Subject: Yak-List: Front canopy removal
--> Yak-List message posted by: "Graeme Frew" <gfrew@attglobal.net>
Could anyone tell me how to get the front canopy off of a Nanchang in easy
steps.
Cheers
Graeme Frew
Message 5
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--> Yak-List message posted by: "TC Johnson" <tjohnson@cannonaviation.com>
Everyone has their own favorite sources . . .
http://www.aaronsmetricscrews.com/
I researched all the popular sources and he had the best prices.
Service is excellent either by website or by telephone.
I've ordered custom cockpit screws for my Yak 52.
And now stainless steel 4mm and 5mm screws for fuselage.
Often the secret is to order far more than you might need as the prices really
go down in case quantities.
http://www.aaronsmetricscrews.com/
TJ
Rk50
Message 6
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| Subject: | Heads Up - OSH '05 change |
--> Yak-List message posted by: "cpayne1@joimail.com" <cpayne1@matronics.com>
In case anyone hasn't noticed, the EAA changed next year's
OSH schedule to start on Monday and end on Sunday. This has
implications on our MTW agenda, it squeezes us into maybe 2
mass practices tops. I'm wondering what the Warbird airshow
schedule is and how it will affect Sunday's show...if there
even is a WB show then.
Me, I have to change my housing reservation.
Craig Payne
Message 7
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| Subject: | Re: Heads Up - OSH '05 change |
--> Yak-List message posted by: "Terry Calloway" <tcalloway@datatechnique.com>
The folks at Dixon who host the Sauk Valley one day air show on Saturday
before Osh have invited us back to do a mass flyover also.
tc
>>> cpayne1@matronics.com 10/14/2004 3:20:40 PM >>>
--> Yak-List message posted by: "cpayne1@joimail.com"
<cpayne1@matronics.com>
In case anyone hasn't noticed, the EAA changed next year's
OSH schedule to start on Monday and end on Sunday. This has
implications on our MTW agenda, it squeezes us into maybe 2
mass practices tops. I'm wondering what the Warbird airshow
schedule is and how it will affect Sunday's show...if there
even is a WB show then.
Me, I have to change my housing reservation.
Craig Payne
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