Today's Message Index:
----------------------
1. 12:55 AM - Hydraulic lock (Eric Wobschall)
2. 04:37 AM - Re: Yak 52 Forward Mag Switch Problem (A. Dennis Savarese)
3. 05:22 AM - Re: CJ W&B version 5 WAS: Magneto Maintenance (dabear)
4. 08:25 AM - Re: Magneto Maintenance (cjpilot710@aol.com)
5. 10:35 AM - this sucks (doug sapp)
6. 02:25 PM - Re: this sucks (Roger Kemp M.D.)
7. 02:59 PM - Re: this sucks (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
8. 03:12 PM - Email bounced (A. Dennis Savarese)
9. 05:27 PM - OSH Schedule up date - final until we get there. (cjpilot710@aol.com)
10. 05:28 PM - Re: this sucks (keithmckinley)
11. 05:40 PM - Re: this sucks (cjpilot710@aol.com)
12. 07:46 PM - Re: this sucks (Noplugs)
Message 1
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Periodically, I read these hydraulic lock disaster reports, and of
course, I appreciate any information that would prevent me from a
similar fate.
I have limited experience compared with most of the folks on Yak-list.
I have owned two Yak-52s and some exposure to a couple of other M-14P
engined planes. Both of my planes came to me with very low time, so
maybe lower cylinder leak-by was not such a problem. Having said this,
a few questions and observations...
In my first plane, the previous owner turned the prop backwards and
bent a link rod for his troubles. He cautioned me, so I never do that.
Francois mentioned stopping if you feel any resistance. Of course,
there's resistance when the pistons approach TDC. The bottom cylinders
are always going to have a bit of oil, unless you just removed the
spark plugs. So, what we're talking about is judgement in terms of
what's not wise to try to compress. I always grasp the blades around
one-third of the way out from the hub.
I worry about all of these modifications and the fact that they add
failure modes. Of course, it's great if the oil pump's internal check
valve works. In the end, I use the Russian methods. If the plane has
been sitting at all (like more then 15 minutes), I pull it through. I
have hoses that are attached to AN fittings that are threaded into the
intake plugs. They are routed to an exit aft of the cowling right
below the coarse fuel filter. There are AN plugs in the hoses on that
end. I just leave the plugs out in between flights. I put them back in
after I'm done pulling through, including when (and if) I prime in
between blade pulls (Winter). This way, the excess fuel runs out of
the intake drains instead of creating their own fluid lock (not that I
prime all that much).
Hopefully, this is enough to keep me out of trouble.
On Jul 21, 2010, at 3:43 PM, Francois Davel wrote:
> <fdavel@senninger.com>
>
> Well as an update I would like post the following.
>
> Due to a lot of support from friends and a very good engineer we
> managed to replace the bent rod, on #5
> Below is what would consider a safe procedure, any comments? or
> additions?
>
> I have been thinking a lot about the that fateful day and how the
> lock occurred what could have been done to prevent it and what would
> I do differently?
>
> We here is what I have come to think of good procedure, to prevent
> this happening to myself again, and happening to one of you.
>
> Never pull the prop on the end, always pull the prop half way along
> the blade, this gives you less leverage and so limits the problem of
> bending a rod with the prop. Which I believe is possible.
> Always stop when ANY resistance is felt. Do not try and squeeze
> through the oil. It is quite possible to squeeze the oil past the
> rings and so get through a small lock.....but it HUGELY dangerous.
> With the leverage you have in your hand through the prop you could
> easily damage the connecting rod.
> NEVER TRUN THE PROP BACKWARDS!!!!!! This is arguably the most
> dangerous thing to do, since it could allow the oil to go up into
> the intake manifold, ready to be sucked into the cylinder and cause
> damage.
> So as soon as there is any resistance felt stop turning the prop,
> and open the two bottom cylinders,and allow time for the oil to
> drain, do NOT rush. Once the oil has stopped draining then you MUST
> screw the plugs back in!!! Then pull another full set of blades, I
> usually pull 16 blades. And if there any resistance, then you need
> to stop and remove the plugs again. Allow time for the oil to
> drain.....do NOT RUSH.
> As soon as you can pull your blades and there is no resistance then
> you are ready to fly.
>
> There are options, like and oil shut off valve that allows you to
> shut the oil off after you have stopped the engine, and this valve
> has a switch that will cut the ignition circuit so you cannot start
> the engine with out the oil valve being open. Part of the kit is a
> oil pump to pump the engine empty. The danger here is the mounting
> of the oil valve could damage the oil tank.
>
> It does not take a lot of oil to cause a lock, I have not worked it
> out but I would guess that 100 ml will be enough. What ever the
> accurate figure is, it is not a lot.
>
> --------
> Round Engines RULE!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=305804#305804
>
>
Message 2
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| Subject: | Re: Yak 52 Forward Mag Switch Problem |
Check to make sure the toggle switch next to the gear selector in the
rear cockpit is in the UP position. See in attached small photo. The
tabs on the sides of the switch are squeezed together in this photo.
Dennis
----- Original Message -----
From: sprejean@sbcglobal.net
To: yak-list@matronics.com
Sent: Thursday, July 22, 2010 10:50 PM
Subject: Yak-List: Yak 52 Forward Mag Switch Problem
After being down for repairs for more than 18 months, the forward
magneto switch no longer grounds the magneto P-Leads. The aft unit
works find and it had to be used to test the mag drop and shutdown the
engine during its initial test run. The forward would do neither. Has
anyone experienced this problem or have a schematic?
Thanks,
Steve Prejean
Message 3
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| Subject: | Re: Magneto Maintenance |
Here is the file. Thanks for the help.
Bear
----- Original Message -----
From: Kurt Howerton
To: yak-list@matronics.com
Sent: Friday, July 23, 2010 2:00 AM
Subject: Re: CJ W&B version 5 WAS: Yak-List: Magneto Maintenance
If you send the file to me, I'll post it to the RPA site.
--
Kurt "I.T." Howerton
N923YK
530.312.1299
Sent from my iPhone
On Jul 22, 2010, at 15:51, "dabear" <Dabear@damned.org> wrote:
The W&B spreadsheet on the RPA site is version 3. I have version 5
now, but the yak-list server doesn't allow me to send xlxs files to the
list. I have sent the file to the admin for the RPA website and
hopefully it should be on the site soon.
This is a W&B spreadsheet I've developed for the CJ. You'll have to
put in your own weights and confirm you are using the datum recommended
in the sheet. The rest is relatively straight forward. The tool allows
you to input stations and weights for:
Aux Fuel Tank
Smoke Oil Tank
3 Different baggage sections/compartments.
Note: Print at 96% to get it to fit on page correctly.
Let me know if you have questions.
Also if anyone else has requests for features, please let me know.
It cost's no more than a beer, next time we fly together. :-)
If you want me to send it to you directly, please email me OFF the
list.
Bear
Randy DeVere
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D
Message 4
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| Subject: | Re: Magneto Maintenance |
I did and its really very good. Better than mine anyway.
Pappy
-----Original Message-----
From: dabear <Dabear@damned.org>
Sent: Thu, Jul 22, 2010 5:36 pm
Subject: Re: Yak-List: Magneto Maintenance
Did anyone see this email and attachment below? I got an error message,
but it came through on my end.
Bear
----- Original Message -----
From: dabear
Sent: Thursday, July 22, 2010 4:43 PM
Subject: Re: Yak-List: Magneto Maintenance
The W&B spreadsheet on the RPA site is version 3. I have version 5 Attache
d here.
This is a W&B spreadsheet I've developed for the CJ. You'll have to put
in your own weights and confirm you are using the datum recommended in th
e sheet. The rest is relatively straight forward. The tool allows you to
input stations and weights for:
Aux Fuel Tank
Smoke Oil Tank
3 Different baggage sections/compartments.
Note: Print at 96% to get it to fit on page correctly.
Let me know if you have questions.
Also if anyone else has requests for features, please let me know. It cos
t's no more than a beer, next time we fly together. :-)
Bear
----- Original Message -----
From: Paul Lewis
Sent: Thursday, July 22, 2010 2:42 PM
Subject: Re: Yak-List: Magneto Maintenance
Hi Guys, does anybody out there have weight & balance info for the CJ6.
Mine does not have any. I do have the gross & empty weight, but need the
forward cg, aft cg & moment. I have the Yakkity Yaks manual, but it list
the cg in percentage. thanks.
Paul Lewis
On Tue, Jul 20, 2010 at 4:32 AM, Cpayne <cpayne@joimail.com> wrote:
For those who are new to maintaining their M-14 or Huosai mags, I authored
a How-to document, with pictures. You can find it on the RPA/Store/Manual
s page.
Magneto coils do age and degrade, but NOT as often as other magneto/igniti
on maladies. Now that Doug Sapp is getting a supply of replacement coils
made, I expect to keep these beasties firing for a long time to come..
Subscription,
www.matronics.com/Navigator?Yak-List" target="_blank">http://www.matroni
cs.com/Navigator?Yak-List
ronics.com/" target="_blank">http://forums.matronics.com
Matt Dralle, List Admin.
====
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronhref
="http://forums.matronics.com">http://forums.matronics.com
ref="http://www.matronics.com/contribution">http://www.matronics.com/c
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Message 5
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Anyone know about this?
ttp://www.faa.gov/news/press_releases/news_story.cfm?newsId=11617<http://www.faa.gov/news/press_releases/news_story.cfm?newsId=11617>
Doug
Message 6
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Yes, it came out in the AOPA news letter as well as "The Alabama Aviator"
website about 3 days ago. It is a bunch of BS! They send out annual request
for me to update my aircraft information annually. Maybe I'm more special
and bear watching but I suspect we all get those little jaundice yellow
cards from the FAA every year. They ask us to update our information if
something has changed. Otherwise we should not return them if nothing has
changed in the previous year.
I say choke them with their renewal request all at the same time this year.
Apparently someone at the FAA has to much free time on their hands. Or, is
they simple want to generate more revenue?
Sorry, I could not tell what your freeking FAA chart meant so I just sent it
in now. Just to be safe.
Doc
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of doug sapp
Sent: Friday, July 23, 2010 12:32 PM
Subject: Yak-List: this sucks
Anyone know about this?
<http://www.faa.gov/news/press_releases/news_story.cfm?newsId=11617>
ttp://www.faa.gov/news/press_releases/news_story.cfm?newsId=11617
Doug
Message 7
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This is their phone number for this issue.
May be a good idea to deluge their tails with questions... Although they probably
won't even answer.
202-267-3883
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Roger Kemp M.D.
Sent: Friday, July 23, 2010 5:24 PM
Subject: RE: Yak-List: this sucks
Yes, it came out in the AOPA news letter as well as "The Alabama Aviator" website
about 3 days ago. It is a bunch of BS! They send out annual request for me
to update my aircraft information annually. Maybe I'm more special and bear watching
but I suspect we all get those little jaundice yellow cards from the FAA
every year. They ask us to update our information if something has changed.
Otherwise we should not return them if nothing has changed in the previous year.
I say choke them with their renewal request all at the same time this year. Apparently
someone at the FAA has to much free time on their hands. Or, is they simple
want to generate more revenue?
Sorry, I could not tell what your freeking FAA chart meant so I just sent it in
now. Just to be safe.
Doc
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of doug sapp
Sent: Friday, July 23, 2010 12:32 PM
Subject: Yak-List: this sucks
Anyone know about this?
ttp://www.faa.gov/news/press_releases/news_story.cfm?newsId=11617 <http://www.faa.gov/news/press_releases/news_story.cfm?newsId=11617>
Doug
http://www.matronics.com/Navigator?Yak-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 8
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Etienne,
I responded to your request for the photos of the sump drain. But the
email bounced back. What would you like for me to do?
Dennis
A. Dennis Savarese
334-285-2141
334-546-8182 (cell)
Skype: yakworld1
www.yak-52.com
Message 9
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| Subject: | OSH Schedule up date - final until we get there. |
Troops. Hark the herald say:
Sunday July 25
RPA arrivals day.
Monday July 26.
Warbird Arrival Day. (time still TBD)
RPA to fly.
Tuesday July 27
0800 Signatory Formation Leads breakfast Conference Room, WB mer
chandise building.
RPA to fly in Air Show
First timers Briefing 1130
Briefing 1230
Show time TBD
Wednesday July 28
1030 -1115 RPA will lead Safety Forum at Warbird Conference Roo
m (open to public)
Airshow --- Vietnam Day
(no flying for RPA)
1800 - ????? RPA Pig Roast. At RPA tent.
1900 - Steak Night -WB Picnic Pavillion (tickets required)
Thursday July 29
0730- 0830 FAST board meeting at (TBD)
0830-0930 FAST check pilot meeting (all signatories) at (TBD)
0900-1615 Forums RPA Forum TBD
Airshow is Jet Day
(no flying for RPA)
1800 DVA Picnic, briefing building -tickets required.
Friday July 30
RPA to fly in Airshow.
1230 Briefing
Show time TBD
Saturday July 31
RPA to fly in Airshow
1230 Briefing
Show time TBD
1800 WB Awards banquet, Eagle Hangar. tickets requi
red.
Sunday August 1
Warbird Acro
(no flying for RPA)
Monday August 2
Disperse.
Message 10
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Babbitt=ALPA scum
--------
Keith McKinley
700HS
KFIT
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=306126#306126
Message 11
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First I heard of it. And your right it sucks!
Big government getting more into our lives. Whoops - forgot we're not sup
pose to talk about political things here on the list.
Pappy
-----Original Message-----
From: doug sapp <dougsappllc@gmail.com>
Sent: Fri, Jul 23, 2010 1:32 pm
Subject: Yak-List: this sucks
Anyone know about this?
ttp://www.faa.gov/news/press_releases/news_story.cfm?newsId=11617
Doug
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Message 12
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This is a quote from AOPA emails I get
"In order to transition from the current non-expiring aircraft registration to
one with a three-year expiration date printed on the certificate, the FAA is requiring
all aircraft registered before Oct. 1 to be re-registered. Owners will
be given a three-month window to comply, based upon the month of current registration.
The FAA proposed a $5 re-registration and renewal fee, but the FAA
reauthorization bill if enacted as passed by the House authorizes the FAA to increase
the initial registration fee to $130 and re-registration and renewals
to $45."
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=306133#306133
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