Today's Message Index:
----------------------
1. 12:47 AM - [Fw: Re: Duxford] (Martin Robinson)
2. 05:08 AM - Re: inverted oil pressure (Rob Rowe)
3. 05:54 AM - Re: inverted oil pressure (A. Dennis Savarese)
4. 06:02 AM - Re: Snakes (cjpilot710@aol.com)
5. 06:51 AM - Re: Carb Heat.....yes or no. Yak (napeone)
6. 08:45 AM - Re: Re: inverted oil pressure (Kregg Victory)
7. 08:47 AM - Re: Parts needed.....pop off valve...carb heat temp probe... (doug sapp)
8. 09:24 AM - Re: Duxford (kp)
9. 09:35 AM - CJ question (mougellionel@aol.com)
10. 10:04 AM - Re: Re: inverted oil pressure (A. Dennis Savarese)
11. 11:09 AM - Re: inverted oil pressure (Jay Hodge)
12. 11:40 AM - Re: Snakes (xiaobao)
13. 12:09 PM - Grace Spitfire (Jay Land)
14. 03:32 PM - Re: Re: Carb Heat.....yes or no. Yak (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
15. 05:59 PM - High Res Pics of CJs, Yak-5, Yak-18A Needed (Craig Winkelmann, CFI)
16. 06:06 PM - High Res Stock Colors CJ Pic needed (Craig Winkelmann, CFI)
17. 06:20 PM - Re: High Res Stock Colors CJ Pic needed (Budd Davisson)
18. 07:02 PM - Re: Carb Heat.....yes or no. Yak (napeone)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hi all,
Jon wrote:
> This is slightly unrelated, but I think y'all will like it anyway.
>
> We were out at the RAF Museum at Duxford yesterday. Weather was
> absolutely perfect. The Aerostars were there practicing... they put
> on a good show.
>
> Near the end of the day we were watching a Spitfire going around a bit
> and when the pilot landed we went over to tell the pilot that where
> we're from, flying a dual-control Spitfire with an empty back seat is
> a violation.
>
> Well, he told us that the Spitfire belongs to his mom, and he just
> turned *23* so he's been out every nice day to rack up the 50 hours he
> needs before the insurance company will let him take passengers.
>
> Talk about having your stars aligned! Great kid... he seemed to be
> enjoying the hell out of it.
>
> Jon
That will be Caroline Grace's boy. Lucky so and so.
Duxford is great but if you are there you should also make a point of
going to the Shuttleworth Collection at Old Warden too. All of theirs
fly! Check out http://www.shuttleworth.org. It's not very far from
Duxford by car. 10 minutes by Luscombe when I last did it so less than
an hour to drive I imagine.
Yak is currently grounded whilst awaiting new EASA paperwork. Plane is
still the same, just different paperwork since 1st April so clearly not
"safe" to fly. Bureaucrats. SIGH :-( Richard Goode has been superb at
sorting it all out for us 18T jockeys and many more Sukoi owners too.
Martin Robinson
Yak 18T HA-YAV - based in Devon UK
--
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: inverted oil pressure |
FWIW - I'm not an engineer but from the oil schematics I wonder if the oil pick
up gimbal assemblies inside the oil tank ares no longer functioning or if your
crankcase vents are blocked (as they act as oil return lines when inverted)
or the inverted operation vent (from the sump) is blocked.
While no expert I'd speculate that if the oil pressure drops very quickly then
it might be gimbal related, if it's more progressive then possibly one of the
vents.
Did this also occur when inverted straight & level (+1G) i.e. neg G may only be
a symptom?
How much oil did you have in the tank pre & post flight?
Had you spent much time performing inverted maneuvers prior to the outside loop
that brought the low oil pressure to your attention?
Presume we can discount a faulty oil pressure gauge by the simultaneous change
in prop noise - if the prop speed controller is starved of oil the prop pitch
reverts to coarse (counterweights overcome aerodynamic prop forces) to stop the
engine overspeeding ... hence the change in prop sound & loss of performance.
brgds, Rob R
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=178886#178886
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: inverted oil pressure |
Could be an internal problem in the oil tank, as the pickup in the oil
tank is suppose to rotate freely from upright to inverted when the
airplane rolls inverted. With the oil pressure dropping to zero during
inverted flight, I suspect the pickup in the oil tank may be stuck in
the right-side-up position.
Dennis
----- Original Message -----
From: HodgeJW@aol.com
To: yak-list@matronics.com
Sent: Wednesday, April 23, 2008 9:17 PM
Subject: Yak-List: inverted oil pressure
Hey Guys,
Was doing an outside loop today in the old 52 and noticed the prop
sounded funny and the airplane was losing energy way too fast. Looked at
the oil pressure and it was 0. Zip. Nothing. Turned said outside loop
into a tail slide, got her upright and the oil pressure returned to
normal. Played around with a bunch more maneuvers, and noticed that oil
pressure was normal anytime I was positive and zero anytime I was
negative. Makes me think check valve balls in inverted system. What do
you guy think? Where do I start looking? Thanks.
Jay
-------------------------------------------------------------------------
-----
Need a new ride? Check out the largest site for U.S. used car listings
at AOL Autos.
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
In a message dated 4/24/2008 1:13:16 A.M. Eastern Daylight Time,
aihuabao@yahoo.com writes:
--> Yak-List message posted by: xiaobao _aihuabao@yahoo.com_
(mailto:aihuabao@yahoo.com)
You're close! Actually the area is right off the south end of Lake
Crescent. Your right, the Oklawaha would be great for river shot "look a-likes"
Just flew over the Pine Castle range on my way down to S&F. They have a
city on the one of the ranges there that looks just like down town Baghdad.
Supposedly when range was "hot" last week the Army guys were using it with gun
ships. It is 23.5nm miles from me. When they drop 2,000 pounders it raddles
my hangar door! I call it the "sound of freedom".
Jim "Pappy" Goolsby
On Wed, 4/23
/08, cjpilot710@aol.com <cjpilot710@aol.com> wrote:
>>Yep. <<
yeahhhhhhhhhh ... I thought I recognized the terrain.
>>There is a virgin area not far from us that looks just like the Mekong
Delta.<<
Where's that, along the natural path of the Oklawaha or somewhere else in
the Rodman Range?
best ....
jack
**************Need a new ride? Check out the largest site for U.S. used car
listings at AOL Autos.
(http://autos.aol.com/used?NCID=aolcmp00300000002851)
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Carb Heat.....yes or no. Yak |
The carburetor has an operating spec of +10C to +40C. The manual calls for carb
heat at anything below that range. This is not for carb ice. It is to insure
that the carb itself is operating properly. The clock in the aircraft also has
a temp range to insure proper operation. The clock is heated when the pitot heat
is turned on.
By the way I have had two instances of carb icing. Quickly cured by applying carb
heat. This on my Yak50.
David H.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=178899#178899
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: inverted oil pressure |
Another place to check while you are at it, is the canister where the oil
temp probes are located. There is about a 90deg fitting off the right side
as view from the front of the plane that runs from the oil tank. This area
where the fitting connects to the oil temp probe housing is prone to cracks.
In some cases if this is cracked, it can case low oil pressure in different
"g's" environment allowing air in the system.
Kregg
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Rob Rowe
Sent: Thursday, April 24, 2008 5:05 AM
Subject: Yak-List: Re: inverted oil pressure
FWIW - I'm not an engineer but from the oil schematics I wonder if the oil
pick up gimbal assemblies inside the oil tank ares no longer functioning or
if your crankcase vents are blocked (as they act as oil return lines when
inverted) or the inverted operation vent (from the sump) is blocked.
While no expert I'd speculate that if the oil pressure drops very quickly
then it might be gimbal related, if it's more progressive then possibly one
of the vents.
Did this also occur when inverted straight & level (+1G) i.e. neg G may only
be a symptom?
How much oil did you have in the tank pre & post flight?
Had you spent much time performing inverted maneuvers prior to the outside
loop that brought the low oil pressure to your attention?
Presume we can discount a faulty oil pressure gauge by the simultaneous
change in prop noise - if the prop speed controller is starved of oil the
prop pitch reverts to coarse (counterweights overcome aerodynamic prop
forces) to stop the engine overspeeding ... hence the change in prop sound &
loss of performance.
brgds, Rob R
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=178886#178886
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Parts needed.....pop off valve...carb heat temp probe... |
Tim,
Have all in stock, give me a call.
On Wed, Apr 23, 2008 at 8:22 PM, Tim Gagnon <NiftyYak50@fuse.net> wrote:
>
> I need the spring with the brass cap from the pop off valve.....mine went
> TU today. I was hoping someone had one laying around that needed a good
> home. As stated in another post, I am working out my carb heat issue and
> need the probe that attaches to the airbox.
>
> I am working on a squawk sheet prior to my airplane having
> possible/probable sale.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=178861#178861
>
>
--
Always Yakin,
Doug Sapp
Phone 509-826-4610
Fax 509-826-3644
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Glad you enjoyed the Aerostars practice days.
If you're still around next week get yourself to North Weald just 40
minutes drive south
from Duxford for our Spring Formation Training week. It'll be wall to
wall Yaks, 52's, 50's 11's and just maybe a 9.
BTW its also the Aerostars home base.
kp
----- Original Message -----
From: Jon Boede
To: yak-list@matronics.com
Sent: Wednesday, April 23, 2008 7:54 PM
Subject: Yak-List: Duxford
This is slightly unrelated, but I think y'all will like it anyway.
We were out at the RAF Museum at Duxford yesterday. Weather was
absolutely perfect. The Aerostars were there practicing... they put on
a good show.
Near the end of the day we were watching a Spitfire going around a bit
and when the pilot landed we went over to tell the pilot that where
we're from, flying a dual-control Spitfire with an empty back seat is a
violation.
Well, he told us that the Spitfire belongs to his mom, and he just
turned *23* so he's been out every nice day to rack up the 50 hours he
needs before the insurance company will let him take passengers.
Talk about having your stars aligned! Great kid... he seemed to be
enjoying the hell out of it.
Jon
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hi gentlemens ,
does anyone could tell me the exact dimension between the main axis without the
removable wing section please we need it to ferry a CJ ;)
thanks for all
happy landings
Lionel
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: inverted oil pressure |
If there is a crack as Kregg suggests, it is almost certain there will be
evidence of oil leaking at the bottom of the canister.
Dennis
----- Original Message -----
From: "Kregg Victory" <kregg@balancemyprop.com>
Sent: Thursday, April 24, 2008 10:42 AM
Subject: RE: Yak-List: Re: inverted oil pressure
>
> Another place to check while you are at it, is the canister where the oil
> temp probes are located. There is about a 90deg fitting off the right
> side
> as view from the front of the plane that runs from the oil tank. This
> area
> where the fitting connects to the oil temp probe housing is prone to
> cracks.
> In some cases if this is cracked, it can case low oil pressure in
> different
> "g's" environment allowing air in the system.
>
> Kregg
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Rob Rowe
> Sent: Thursday, April 24, 2008 5:05 AM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: inverted oil pressure
>
>
> FWIW - I'm not an engineer but from the oil schematics I wonder if the oil
> pick up gimbal assemblies inside the oil tank ares no longer functioning
> or
> if your crankcase vents are blocked (as they act as oil return lines when
> inverted) or the inverted operation vent (from the sump) is blocked.
>
> While no expert I'd speculate that if the oil pressure drops very quickly
> then it might be gimbal related, if it's more progressive then possibly
> one
> of the vents.
>
> Did this also occur when inverted straight & level (+1G) i.e. neg G may
> only
> be a symptom?
>
> How much oil did you have in the tank pre & post flight?
>
> Had you spent much time performing inverted maneuvers prior to the outside
> loop that brought the low oil pressure to your attention?
>
> Presume we can discount a faulty oil pressure gauge by the simultaneous
> change in prop noise - if the prop speed controller is starved of oil the
> prop pitch reverts to coarse (counterweights overcome aerodynamic prop
> forces) to stop the engine overspeeding ... hence the change in prop sound
> &
> loss of performance.
>
> brgds, Rob R
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=178886#178886
>
>
>
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: inverted oil pressure |
Hey Guys,
Thanks for the info. Now I have a place to start looking. Someone asked whether
the oil pressure dropped slowly or quickly. It went down to 0 immediately upon
rolling inverted. Negative 1 g was enough to do it right now. Just the flight
before, I was doing negative 4 no problems. Hopefully I will get a chance to
look at it tomorrow and I'll let you know what I find.
Jay
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=178981#178981
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--- On Thu, 4/24/08, cjpilot710@aol.com <cjpilot710@aol.com> wrote:
>>...Just flew over the Pine Castle range<<
Its been a few years since I've been there though I guess the fun is just a good
as it was ...
I just can't place a grassy area in the south of Crescent Lake, maybe its come
up since I've been there, though: is it on the east side of the lake? seems like
I remember something there ........
Tell you one thing, it'd be some fun to drop a Huey ... or any helo for that matter
... beneath the tops anywhere on the natural Oklawaha east of 19. Out in
the reservoir, of course, would be a walk in the so-called park.
Sorry I'm not in the 'hood to enjoy the Snake rotor voice.
best ...
jack
> --> Yak-List message posted by: xiaobao
> _aihuabao@yahoo.com_
> (mailto:aihuabao@yahoo.com)
> You're close! Actually the area is right off the south
> end of Lake
> Crescent. Your right, the Oklawaha would be great for
> river shot "look a-likes"
>
> Just flew over the Pine Castle range on my way down to
> S&F. They have a
> city on the one of the ranges there that looks just like
> down town Baghdad.
> Supposedly when range was "hot" last week the
> Army guys were using it with gun
> ships. It is 23.5nm miles from me. When they drop 2,000
> pounders it raddles
> my hangar door! I call it the "sound of
> freedom".
>
> Jim "Pappy" Goolsby
>
>
>
> On Wed, 4/23
> /08, cjpilot710@aol.com <cjpilot710@aol.com> wrote:
>
> >>Yep. <<
>
> yeahhhhhhhhhh ... I thought I recognized the terrain.
>
> >>There is a virgin area not far from us that looks
> just like the Mekong
> Delta.<<
>
> Where's that, along the natural path of the Oklawaha
> or somewhere else in
> the Rodman Range?
>
> best ....
>
> jack
>
>
>
>
>
>
>
>
> **************Need a new ride? Check out the largest site
> for U.S. used car
> listings at AOL Autos.
> (http://autos.aol.com/used?NCID=aolcmp00300000002851)
Be a better friend, newshound, and
know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Here's a link to their website
http://www.ml407.co.uk/pages/main.html
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Carb Heat.....yes or no. Yak |
David, I'd be interested in the exact meteorological conditions you were
in where you had "carb icing". Could you go into complete detail on
how it started, what it sounded like, indications,etc, followed by how
long it lasted, and how it went away when it did? Also where was the
carb temp gage when it happened?
The reason I ask is many fold.
1. I own a YAK-50 as well and have never experienced any kind of icing,
summer or winter in over 9 years now.
2. Some Russian aircraft flying our engines do not even have carb heat
systems.
3. The carburetor on the M-14 is more fuel injector than it is carb.
Meaning, it does not have a fuel bowl per se, that has fuel sucked in
from a pressure differential caused by the typical venturi. Thus,
without the venturi it also does not have the same icing issues with a
carb that does employ the venturi technique.
Supercooled moisture is a different animal....
In any case, I am very interested in hearing of your personal
experiences!
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of napeone
Sent: Thursday, April 24, 2008 9:48
Subject: Yak-List: Re: Carb Heat.....yes or no. Yak
The carburetor has an operating spec of +10C to +40C. The manual calls
for carb heat at anything below that range. This is not for carb ice. It
is to insure that the carb itself is operating properly. The clock in
the aircraft also has a temp range to insure proper operation. The clock
is heated when the pitot heat is turned on.
By the way I have had two instances of carb icing. Quickly cured by
applying carb heat. This on my Yak50.
David H.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=178899#178899
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | High Res Pics of CJs, Yak-5, Yak-18A Needed |
Gang:
I have been in contact with the editors of Warbird magazine for six months or more
about getting an article on the CJ published for the anniversary. I've completed
the article and it has been accepted for publication in JULY. Now we
need pictures.
To complete the article, Warbird magazine needs high res pictures of CJ-6s, Yak-18A
and CJ-5/Yak-18 aircraft.
The requirement is that the aircraft must be owned by an EAA Warbird member and
the photographer must be willing to release the photo for use in the magazine.
Please send to me, offline the following:
1) Picture in .jpg format, 300 dpi or greater and the more megapixels the better.
2) photographer name and e-mail address (for release)
3) aircraft and owner
Please no junk pictures. Nicely framed, high res formation, air-to-air and ground
pics. No cluttered backgrounds, etc.
my e-mail address is capav8r@gmail.com
Thank you in advance. This is our chance with Warbird magazine to really shine!!
Craig
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=179068#179068
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | High Res Stock Colors CJ Pic needed |
Gang:
One more request.....High res, stock, PLAF colors, side view, in flight, clean
background, well framed, photo of CJ6 for center spread.
Thanks,
Craig
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=179070#179070
Message 17
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: High Res Stock Colors CJ Pic needed |
If you're based in Phoenix and you can put together a camera ship and some
subject planes, I'm not flying tomorrow afternoon and I'd be willing to
contribute some high res pixels and a couple of hours for the cause. A
couple of samples are attached. Unfortunately, I don't have high res scans
of these. Only slides.
Budd Davisson
On 4/24/08 6:04 PM, "Craig Winkelmann, CFI" <capav8r@gmail.com> wrote:
>
> Gang:
>
> One more request.....High res, stock, PLAF colors, side view, in flight, clean
> background, well framed, photo of CJ6 for center spread.
>
> Thanks,
>
> Craig
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=179070#179070
>
>
>
>
>
>
>
>
>
>
Message 18
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Carb Heat.....yes or no. Yak |
Mark
The exact meteorological conditions were outside airtemp 50F, high humidity. Also
included was a prolonged low power descent. Application of carb heat cured
the problem.
Thank you for your explanation of the workings of a pressure carb.
David H.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=179087#179087
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|