Today's Message Index:
----------------------
1. 04:29 AM - Paging Drew. (Daniel Fortin)
2. 04:39 AM - Re: Paging Drew. (Daniel Fortin)
3. 05:33 AM - Re: Paging Drew. (cjpilot710@aol.com)
4. 05:50 AM - Re: Oil Temperatures (Brian Lloyd)
5. 05:59 AM - Re: Oil Temperatures (Brian Lloyd)
6. 08:09 AM - RPA Website (Yak52)
7. 08:19 AM - Wheel alignment (Yak52)
8. 08:33 AM - Re: Re: Hours on type (Stephen Fox)
9. 08:48 AM - Sparking Plugs (Richard Goode)
10. 03:05 PM - Re: accidents (Bitterlich GS11 Mark G)
11. 03:10 PM - Spitfire Ace (Gus Fraser)
12. 03:29 PM - Re: Yak 50 Main gear actuator seals (Bitterlich GS11 Mark G)
13. 03:41 PM - Re: Yak 50 Main gear actuator seals (Doug Sapp)
14. 04:07 PM - Re: Yak 50 Main gear actuator seals (Bitterlich GS11 Mark G)
15. 04:19 PM - Re: Yak 50 Main gear actuator seals (Doug Sapp)
16. 08:06 PM - Re: Mags & ignition (PHCarter@aol.com)
Message 1
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--> Yak-List message posted by: "Daniel Fortin" <fougapilot@hotmail.com>
Paging our fearless leader Drew, your email on lacoudchaser@yahoo.com keeps
bouncing.
Dan Fortin
Message 2
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--> Yak-List message posted by: "Daniel Fortin" <fougapilot@hotmail.com>
Disregard, found the error, copied his address from the Web site with a
typo.
D
>From: "Daniel Fortin" <fougapilot@hotmail.com>
>Reply-To: yak-list@matronics.com
>To: yak-list@matronics.com, lacoudchaser@yahoo.com
>Subject: Yak-List: Paging Drew.
>Date: Mon, 10 Jan 2005 12:22:25 +0000
>
>--> Yak-List message posted by: "Daniel Fortin" <fougapilot@hotmail.com>
>
>Paging our fearless leader Drew, your email on lacoudchaser@yahoo.com keeps
>bouncing.
>
>Dan Fortin
>
>
Message 3
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| Subject: | Re: Paging Drew. |
--> Yak-List message posted by: cjpilot710@aol.com
In a message dated 1/10/2005 7:30:32 AM Eastern Standard Time,
fougapilot@hotmail.com writes:
Paging our fearless leader Drew, your email on lacoudchaser@yahoo.com keeps
bouncing.
Dan Fortin
Ditto
Pappy
Message 4
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| Subject: | Re: Oil Temperatures |
--> Yak-List message posted by: Brian Lloyd <brianl@lloyd.com>
On Jan 9, 2005, at 11:54 PM, Walt Lannon wrote:
>>> least 30 degs. is specified in the CJ manual and you should NEVER
>>> apply full
>>> power below that.
>>
>> I was under the impression that this was because the oil pressure
>> could
>> rise too high if the oil was too "thick" and therefore this was not a
>> problem with multi-vis oils.
>
> Rather than being a problem of excess pressure I think the concern is
> the
> oil is too "thick" to flow and lubricate properly at cold temperatures.
And that is one of the things that a multi-vis oil fixes.
> Most
> certainly the multi grades improve that situation but whether it
> eliminates
> the problem I think is questionable.
> I have been using 25W60 in the R1340 ever since it became available. I
> still
> follow P&W recommendations and do not exceed 1000 RPM until the oil
> temp.
> reaches 40 degs.C. P&W did not change that with their acceptance of
> multi-grades.
It certainly was easier (and cheaper) to not say anything and not do
any research given that P&W doesn't make any money off of their radials
anymore. Still, that does not mean that the multi-vis oils fix the
problem.
> No question the multi-grade is an improvement, the oil will reach 40
> degs
> much quicker than straight weight 100 or 120.
Probably because of the increased oil flow. With multi-vis oil I never
adhered to the 30C rule and never ran into a problem. YMMV.
Brian Lloyd 6501 Red Hook Plaza
brianl@lloyd.com Suite 201
+1.340.998.9447 St. Thomas, VI 00802
I fly because it releases my mind from the tyranny of petty things . . .
Antoine de Saint-Exupry
Message 5
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| Subject: | Re: Oil Temperatures |
--> Yak-List message posted by: Brian Lloyd <brianl@lloyd.com>
On Jan 9, 2005, at 11:54 PM, Walt Lannon wrote:
>>> least 30 degs. is specified in the CJ manual and you should NEVER
>>> apply full
>>> power below that.
>>
>> I was under the impression that this was because the oil pressure
>> could
>> rise too high if the oil was too "thick" and therefore this was not a
>> problem with multi-vis oils.
>
> Rather than being a problem of excess pressure I think the concern is
> the
> oil is too "thick" to flow and lubricate properly at cold temperatures.
And that is one of the things that a multi-vis oil fixes.
> Most
> certainly the multi grades improve that situation but whether it
> eliminates
> the problem I think is questionable.
> I have been using 25W60 in the R1340 ever since it became available. I
> still
> follow P&W recommendations and do not exceed 1000 RPM until the oil
> temp.
> reaches 40 degs.C. P&W did not change that with their acceptance of
> multi-grades.
It certainly was easier (and cheaper) to not say anything and not do
any research given that P&W doesn't make any money off of their radials
anymore. Still, that does not mean that the multi-vis oils fix the
problem.
> No question the multi-grade is an improvement, the oil will reach 40
> degs
> much quicker than straight weight 100 or 120.
Probably because of the increased oil flow. With multi-vis oil I never
adhered to the 30C rule and never ran into a problem. YMMV.
Brian Lloyd 6501 Red Hook Plaza
brianl@lloyd.com Suite 201
+1.340.998.9447 St. Thomas, VI 00802
I fly because it releases my mind from the tyranny of petty things . . .
Antoine de Saint-Exupry
Message 6
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--> Yak-List message posted by: "Yak52" <yak52@flyredstar.org>
I activated email address and password as login criteria for the RPA
website. Please let me know if you have any problems.
You can get your login info by clicking on "forget you login info" on the
home page. Remember to "click" the login button and not just press enter.
Thanks,
Deon.
Message 7
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--> Yak-List message posted by: "Yak52" <yak52@flyredstar.org>
I have a nagging shimmy on my Yak 52 that will not go away in spite of all
my efforts. This weekend I measured the wheel alignment (Tow in) to find my
left main wheel is turned outwards. The tyre also has tell-tale signs of
uneven running. Has anybody got some advice - the scissors has just about no
margin for adjustment (shimming).
Thanks
Deon.
Message 8
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| Subject: | Re: Hours on type |
--> Yak-List message posted by: Stephen Fox <jsfox@adelphia.net>
On 1/8/05 9:00 PM, "ByronMFox@aol.com" <ByronMFox@aol.com> wrote:
> --> Yak-List message posted by: ByronMFox@aol.com
>
> By comparison with other responses, my 440 hours in 3 years of CJ time seems
> paltry. Thanks to Dave King and Steve Holifield, though, 260 of that was in
> formation. ...Blitz
While my brother keeps his hours climbing in his CJ I'm still waiting for my
first in my new (new to me) Yak 52. Hopefully we'll be getting a break in
the weather here in New England soon so I can get my transition time done
with George Coy. Praying for a few days in a row of VFR.
http://homepage.mac.com/steve.fox/PhotoAlbum5.html
Steve
Message 9
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--> Yak-List message posted by: "Richard Goode" <richard.goode@russianaeros.com>
Sparking Plugs
It is worth pointing out that the Russians have virtually no cases of the sparking
plug centres blowing out.=20
The view of Vedeneyev themselves is that engines in Russia are almost always started
by engineers, who always make sure that the lower cylinders are totally
free of oil, whereas we in the west tend to be rather more casual about it.
When you start the engine, and there is some oil, however little, you increase
compression ratio, and if the oil is there in any quantity the compression ratio
increase can be quite significant.=20
In these circumstances, the weakest part of the cylinder assembly is the ceramic
of the sparking plug and running with an increased compression ratio apparently
causes very small cracks, which ultimately would lead to the centre blowing
out.=20
I am sure this is not the whole story, but it does reinforce the need to clear
oil from the cylinders!
Regards
Richard
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Herefordshire
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
dangerous content by the http://www.anti84787.com
MailScanner, and is believed to be clean.
Message 10
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--> Yak-List message posted by: Bitterlich GS11 Mark G <BitterlichMG@cherrypoint.usmc.mil>
There is no such thing as a "small actually leak" in a YAK-50.
Just thought I would mention that. :-)
Have you got them out and taken apart yet? If not, we should talk.
Mark
-----Original Message-----
From: Mark Jefferies YAK UK [mailto:mark.j@yakuk.com]
Subject: Yak-List: accidents
--> Yak-List message posted by: Mark Jefferies YAK UK <mark.j@yakuk.com>
In the UK we have appox 100 YAK's of all types. In the last 12 months i
believe we have had only 3 accidents. Maybe add a couiple more I cant think
of.
I see that there are approx 333 YAK's in USA, thats 3,11,12,18,50,52,54,55,
(55 is fixed gear)
Why the ratio differance?
1. Gear up due to seal failure (seals life was up in 4 months time, they
have 5 years life. Emg system did not help but finger trouble also did not
help, I belive the gear would have come down using correct procedure as when
tested on the ground it did "down and lock" with 30 ATA. write off.
2. heavy landing with jammed elivater due to mobile phone, prop clipped
ground.$18,000 repair.
3. messed up forced landing due to engine failure, fuel related most likely
water frozen in filters. Write off.
So. what do we learn? 1. The OEM gave lives for good reason. 2. learn your
procedures. 3 Do a FOD check.
And finaly, Experimental does not mean "its an experiment to see how long it
will last till falling appart" Dont abuse the rights you have or they will
be taken away.
Good luck to all for the coming year, regards, MJ
BTW, there is a mod to greatly reduce the engine start possability with the
air off and then taxining into something, its mandatory in the UK. I have
the kits in stock, its approx 300$ This is only for the Yak 52.
Time: 09:37:48 AM PST US
From: "Tom Johnson" <tjohnson@cannonaviation.com>
Subject: Yak-List: Insurance Concerns
--> Yak-List message posted by: "Tom Johnson" <tjohnson@cannonaviation.com>
Fellow CJ / Yak pilots:
As some of you may know, I've sounded the ALERT horn due to an alarming
trend.
The CJs and Yaks as a whole are having a very bad claims year due to Gear
mishaps
and Prop strikes.
In the last month or so, we've had about 10 gear / prop related mishaps.
In the last year, we've had about 24 gear / prop related mishaps.
The T28s, T6s, T34s have had virtually Zero gear / prop related mishaps.
This trend has been increasing in both frequency and magnitude in recent
weeks.
So, we stick out like a sore thumb to the underwriter at USSIC who provides
most
of our insurance.
The problem for us, what will happen to our ability to obtain insurance?
Prices go way up?
US Specialty decides to stop writing Yaks?
Now is NOT the time to point fingers, or blame capitalism or new pilots or
old
pilots.
In fact the claims come from across the spectrum and indicate we need to
change
a few things in our aircraft and a few things in our training and habits.
I am working closely with the RPA Board of Directors, and gathering input
from
our Mechanics and Instructors.
We will fix this problem, and we will show the underwriters that we can get
the
results we want.
In the meantime. Please re-read your emergency and normal checklists.
If you have been having gear problems or gremlins, please address.
My own aircraft is down now because of a small actuator leak, so I'm gonna
rebuild
both actuators just to be safe.
Stand by for additional details, please.
Yours truly.
Tom Johnson
Best regards, Mark
www.yakuk.com
+44 (0)1767 651156 office +44 (0)7785 538 317 mobile
Message 11
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--> Yak-List message posted by: "Gus Fraser" <fraseg@comcast.net>
Ladies and Gents,
Tonight on the History channel there is a reality TV show called Spitfire
Ace. Four lucky bastards compete for nine hours of training in a Spitfire.
It is on the History Channel and starts at 8:00pm EST. Those in CA better
set those Tivo units to record it.
BTW bought my Dynon D10A today for the SP-91 :))))
Enjoy
Gus
Message 12
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| Subject: | Yak 50 Main gear actuator seals |
--> Yak-List message posted by: Bitterlich GS11 Mark G <BitterlichMG@cherrypoint.usmc.mil>
Gents I have been through this.
52 seals will not fit 50 actuators.
There are no locking balls in 50 actuators by the way. The short story: The
landing gears locks up AND down on the 50 using external mechanisms.
There was a gent that I got in touch with 5 years ago that MADE them for me.
Poor headwork on my part for not remembering that person's name. Maybe Carl
Hays might remember? It seems to me that I contacted either Richard or Mark
in England looking for these things and one of them turned me on to the guy
in the United States who ended up making them for me. I sold a spare set to
Francis Butler if you want to try buying them from him.
Vladimir Yastremski also just replaced a set in Mary's YAK-50 about 2 years
ago, so maybe he has access.
Mark Bitterlich
N50YK
-----Original Message-----
From: A. Dennis Savarese [mailto:adsavar@gte.net]
Subject: Re: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
TJ,
If you will disassemble the actuator and send me ALL the seals (don't forget
the one on the shaft end cap), C-clips, and metal balls, I will compare them
to a complete rebuild kit for the 52 nose gear actuator. If they are the
same, I'll have my supplier ship you two complete rebuild kits. Just for
grins, I'll also compare them to the 52 main actuator rebuild kit. There
are in fact two different sizes of the large seals used in the main actuator
and the smaller of the two may just be the ones that will fit the 50.
Dennis
----- Original Message -----
From: "Tom Johnson" <tjohnson@cannonaviation.com>
Subject: Yak-List: Yak 50 Main gear actuator seals
> --> Yak-List message posted by: "Tom Johnson"
<tjohnson@cannonaviation.com>
>
> Any 50 drivers might have recently bought Yak50 Main Gear Actuator Seals?
> They may be same as 52 nose actuator seals.
>
> If anybody has a set on their parts shelf, I'm in need.
> Rebuilding actuators for the New Year.
>
> Tj
>
>
Message 13
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| Subject: | Yak 50 Main gear actuator seals |
--> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
TJ,
Dean Courtney has a set of overhauled Yak 50 main gear on Barnstormers. 3K
for the pair I think I recall. www.barnstormers.com, click search ads,
enter "yak".
Always Yakin,
Doug Sapp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Bitterlich GS11
Mark G
Subject: RE: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: Bitterlich GS11 Mark G
<BitterlichMG@cherrypoint.usmc.mil>
Gents I have been through this.
52 seals will not fit 50 actuators.
There are no locking balls in 50 actuators by the way. The short story: The
landing gears locks up AND down on the 50 using external mechanisms.
There was a gent that I got in touch with 5 years ago that MADE them for me.
Poor headwork on my part for not remembering that person's name. Maybe Carl
Hays might remember? It seems to me that I contacted either Richard or Mark
in England looking for these things and one of them turned me on to the guy
in the United States who ended up making them for me. I sold a spare set to
Francis Butler if you want to try buying them from him.
Vladimir Yastremski also just replaced a set in Mary's YAK-50 about 2 years
ago, so maybe he has access.
Mark Bitterlich
N50YK
-----Original Message-----
From: A. Dennis Savarese [mailto:adsavar@gte.net]
Subject: Re: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
TJ,
If you will disassemble the actuator and send me ALL the seals (don't forget
the one on the shaft end cap), C-clips, and metal balls, I will compare them
to a complete rebuild kit for the 52 nose gear actuator. If they are the
same, I'll have my supplier ship you two complete rebuild kits. Just for
grins, I'll also compare them to the 52 main actuator rebuild kit. There
are in fact two different sizes of the large seals used in the main actuator
and the smaller of the two may just be the ones that will fit the 50.
Dennis
----- Original Message -----
From: "Tom Johnson" <tjohnson@cannonaviation.com>
Subject: Yak-List: Yak 50 Main gear actuator seals
> --> Yak-List message posted by: "Tom Johnson"
<tjohnson@cannonaviation.com>
>
> Any 50 drivers might have recently bought Yak50 Main Gear Actuator Seals?
> They may be same as 52 nose actuator seals.
>
> If anybody has a set on their parts shelf, I'm in need.
> Rebuilding actuators for the New Year.
>
> Tj
>
>
Message 14
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| Subject: | Yak 50 Main gear actuator seals |
--> Yak-List message posted by: Bitterlich GS11 Mark G <BitterlichMG@cherrypoint.usmc.mil>
Good deal and good advice Doug, but what Tom needs are seals for the gear
actuators... the rams that move the main gear up and down.
Mark Bitterlich
N50YK
-----Original Message-----
From: Doug Sapp [mailto:rvfltd@televar.com]
Subject: RE: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
TJ,
Dean Courtney has a set of overhauled Yak 50 main gear on Barnstormers. 3K
for the pair I think I recall. www.barnstormers.com, click search ads,
enter "yak".
Always Yakin,
Doug Sapp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Bitterlich GS11
Mark G
Subject: RE: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: Bitterlich GS11 Mark G
<BitterlichMG@cherrypoint.usmc.mil>
Gents I have been through this.
52 seals will not fit 50 actuators.
There are no locking balls in 50 actuators by the way. The short story: The
landing gears locks up AND down on the 50 using external mechanisms.
There was a gent that I got in touch with 5 years ago that MADE them for me.
Poor headwork on my part for not remembering that person's name. Maybe Carl
Hays might remember? It seems to me that I contacted either Richard or Mark
in England looking for these things and one of them turned me on to the guy
in the United States who ended up making them for me. I sold a spare set to
Francis Butler if you want to try buying them from him.
Vladimir Yastremski also just replaced a set in Mary's YAK-50 about 2 years
ago, so maybe he has access.
Mark Bitterlich
N50YK
-----Original Message-----
From: A. Dennis Savarese [mailto:adsavar@gte.net]
Subject: Re: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
TJ,
If you will disassemble the actuator and send me ALL the seals (don't forget
the one on the shaft end cap), C-clips, and metal balls, I will compare them
to a complete rebuild kit for the 52 nose gear actuator. If they are the
same, I'll have my supplier ship you two complete rebuild kits. Just for
grins, I'll also compare them to the 52 main actuator rebuild kit. There
are in fact two different sizes of the large seals used in the main actuator
and the smaller of the two may just be the ones that will fit the 50.
Dennis
----- Original Message -----
From: "Tom Johnson" <tjohnson@cannonaviation.com>
Subject: Yak-List: Yak 50 Main gear actuator seals
> --> Yak-List message posted by: "Tom Johnson"
<tjohnson@cannonaviation.com>
>
> Any 50 drivers might have recently bought Yak50 Main Gear Actuator Seals?
> They may be same as 52 nose actuator seals.
>
> If anybody has a set on their parts shelf, I'm in need.
> Rebuilding actuators for the New Year.
>
> Tj
>
>
Message 15
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| Subject: | Yak 50 Main gear actuator seals |
--> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
Yes I know, just thought I'd mention it. My Yak 18 has similar if not the
same actuators and I have been dreading the day that I was going to have to
get into them. I have been lurking here on the side lines hoping someone
would solve the problem before I needed to overhaul mine. But since I am
doing a full airframe overhaul I may as well face the music now and get it
over with. Does anyone have a exploded dwg or parts book that shows the
actuator?
Always Yakin,
Doug Sapp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Bitterlich GS11
Mark G
Subject: RE: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: Bitterlich GS11 Mark G
<BitterlichMG@cherrypoint.usmc.mil>
Good deal and good advice Doug, but what Tom needs are seals for the gear
actuators... the rams that move the main gear up and down.
Mark Bitterlich
N50YK
-----Original Message-----
From: Doug Sapp [mailto:rvfltd@televar.com]
Subject: RE: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
TJ,
Dean Courtney has a set of overhauled Yak 50 main gear on Barnstormers. 3K
for the pair I think I recall. www.barnstormers.com, click search ads,
enter "yak".
Always Yakin,
Doug Sapp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Bitterlich GS11
Mark G
Subject: RE: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: Bitterlich GS11 Mark G
<BitterlichMG@cherrypoint.usmc.mil>
Gents I have been through this.
52 seals will not fit 50 actuators.
There are no locking balls in 50 actuators by the way. The short story: The
landing gears locks up AND down on the 50 using external mechanisms.
There was a gent that I got in touch with 5 years ago that MADE them for me.
Poor headwork on my part for not remembering that person's name. Maybe Carl
Hays might remember? It seems to me that I contacted either Richard or Mark
in England looking for these things and one of them turned me on to the guy
in the United States who ended up making them for me. I sold a spare set to
Francis Butler if you want to try buying them from him.
Vladimir Yastremski also just replaced a set in Mary's YAK-50 about 2 years
ago, so maybe he has access.
Mark Bitterlich
N50YK
-----Original Message-----
From: A. Dennis Savarese [mailto:adsavar@gte.net]
Subject: Re: Yak-List: Yak 50 Main gear actuator seals
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
TJ,
If you will disassemble the actuator and send me ALL the seals (don't forget
the one on the shaft end cap), C-clips, and metal balls, I will compare them
to a complete rebuild kit for the 52 nose gear actuator. If they are the
same, I'll have my supplier ship you two complete rebuild kits. Just for
grins, I'll also compare them to the 52 main actuator rebuild kit. There
are in fact two different sizes of the large seals used in the main actuator
and the smaller of the two may just be the ones that will fit the 50.
Dennis
----- Original Message -----
From: "Tom Johnson" <tjohnson@cannonaviation.com>
Subject: Yak-List: Yak 50 Main gear actuator seals
> --> Yak-List message posted by: "Tom Johnson"
<tjohnson@cannonaviation.com>
>
> Any 50 drivers might have recently bought Yak50 Main Gear Actuator Seals?
> They may be same as 52 nose actuator seals.
>
> If anybody has a set on their parts shelf, I'm in need.
> Rebuilding actuators for the New Year.
>
> Tj
>
>
Message 16
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| Subject: | Re: Mags & ignition |
--> Yak-List message posted by: PHCarter@aol.com
The hard thing about checking the ignition harness is that it usually checks
out okay. I my case the missing occurred only after some time in the air. I
thought at first it was heat relayed. There was also a relationship with
moisture that was not very consistent. After we took the harness off and tested
it at Savage (I wanted to make sure I was not spending my money on the wrong
fix) it was clear the harness was not performing well, but it was not clearly
the smoking gun I wanted to see. Upon disassembly of the harness we found alot
of moisture in the wiring and alot of rubber components braking down. After
the fact, I am convienced the harness was bad and I made the right investment,
but before we started to taking the harness apart, the testing of the harness
was inconclusive and I was nervous. Just my experience, hope things are
clearer for you.
Preston Carter N6209F
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