Matronics Email Lists :: View topic - Yak-List Digest: 7 Msgs

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
Get Email Distribution Too! FAQ Search Memberlist Usergroups Register
Profile Log in to check your private messages Log in
Yak-List Digest: 7 Msgs - 10/03/09
Matronics Email Lists Forum Index -> Yak-List
View previous topic :: View next topic
Author Message
tasport(at)msn.com
Guest
Posted: Sun Oct 04, 2009 3:45 pm Post subject: Yak-List Digest: 7 Msgs - 10/03/09
Hello group C I still need information on where I can obtain an engine mount for a yak 55 either through a salvaged airframe or a project that someone is parting out or possibly a number for someone in russia at the factory if one exists thanks in advance for your help C Todd. P.S. you can contact me off list at tasport(at)msn.com

 

[quote] Date: Sat C 3 Oct 2009 23:59:21 -0700

 From: yak-list(at)matronics.com

 To: yak-list-digest(at)matronics.com

 Subject: Yak-List Digest: 7 Msgs - 10/03/09

 

 *

 

 =========================

 Online Versions of Today's List Digest Archive

 =========================

 

 Today's complete Yak-List Digest can also be found in either of the 

 two Web Links listed below. The .html file includes the Digest formatted 

 in HTML for viewing with a web browser and features Hyperlinked Indexes 

 and Message Navigation. The .txt file includes the plain ASCII version 

 of the Yak-List Digest and can be viewed with a generic text editor 

 such as Notepad or with a web browser. 

 

 HTML Version:

 

 http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter=2009-10-03&Archive=Yak

 

 Text Version:

 

 http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2009-10-03&Archive=Yak

 

 

 ================================================

 EMail Version of Today's List Digest Archive

 ================================================

 

 

 ----------------------------------------------------------

 Yak-List Digest Archive

 ---

 Total Messages Posted Sat 10/03/09: 7

 ----------------------------------------------------------

 

 

 Today's Message Index:

 ----------------------

 

 1. 05:43 AM - Re: Yak Radio (psb777)

 2. 06:03 AM - Re: oil shut-off valve (psb777)

 3. 12:08 PM - Re: Re: Yak Radio (Yak Pilot)

 4. 12:22 PM - Re: Yak Radio (Bitterlich C Mark G CIV Det Cherry Point C MALS-14 64E)

 5. 01:22 PM - Re: oil shut-off valve (Bitterlich C Mark G CIV Det Cherry Point C MALS-14 64E)

 6. 01:22 PM - Oil Shut off valves (Yak Pilot)

 7. 01:44 PM - Re: oil shut-off valve (Bitterlich C Mark G CIV Det Cherry Point C MALS-14 64E)

 

 

 

 ________________________________ Message 1 _____________________________________

 

 

 Time: 05:43:35 AM PST US

 Subject: Re: Yak Radio

 From: "psb777" <matronics.com(at)beardsell.com>

 

 

 Didier C I have a similar radio configuration to you but the opposite problem with

 the Baklan radio. The Garmin radio is fine. I can always hear very well on

 the Baklan radio but usually the transmissions from it are reported as inaudible

 or garbled and so I no longer transmit using it. Also C in flight C when talking

 on the Baklan radio there is a loud noise in my headset. On the ground

 the Baklan radio works fine. It feels to me as if a minor adjustment would make

 things work a lot better. But I know very little! The local avionics chap

 has had a look and can find nothing obviously wrong. Regards C Paul

 

 Paul Beardsell HA-YAB Yak-18T

 

 --------

 Paul Beardsell

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=266236#266236

 

 

 ________________________________ Message 2 _____________________________________

 

 

 Time: 06:03:03 AM PST US

 Subject: Re: oil shut-off valve

 From: "psb777" <matronics.com(at)beardsell.com>

 

 

 The last thing I am suggesting is that we should not be cautious. But: 18 blades?

 You seem to relate this to 9 C the number of cylinders. Are you saying that

 if the engine had 7 cylinders you would pull 14 blades? Every 720 degrees

 of engine rotation takes every cylinder in the engine through a full cycle C no

 matter how many cylinders there are. Also C the prop is geared 0.658 to the engine

 so 18 (two-bladed prop) blade pulls is 9 prop revolutions or 13 engine revolutions.

 

 

 I have the inlet manifold drains and I have been pulling 9 blades C that's 4.5 prop

 revs or just short of 7 engine revs. Or at least 3 inlet strokes and at least

 3 exhaust strokes on every cylinder. As often as not I see no oil. If I

 see more than the slightest dribble I will wait and pull again. But I think

 I am being overly cautious. My experience suggests if there is no oil by blade

 5 there will be no oil by blade 9. On the other hand I don't want to feel I

 am lacking in engine care by not doing 18 blades like you. 

 

 There should be some rationality behind this. If(!) there is no logical reasoning

 behind the advice to pull 18 then why is that good enough? Why don't you

 pull 20 blades?

 

 And if I am pulling 9 but only 5 can *properly* be argued to be necessary C then

 why pull 9? (I will keep on pulling 9!)

 

 Paul Beardsell HA-YAB Yak-18T

 

 --------

 Paul Beardsell

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=266242#266242

 

 

 ________________________________ Message 3 _____________________________________

 

 

 Time: 12:08:55 PM PST US

 From: Yak Pilot <yakplt(at)yahoo.com>

 Subject: Re: Re: Yak Radio

 

 I would like to confirm you are running a Baklan.- Not the panel mounted 

 radio like in the YAK-50.- 

 -

 Anyway C from what you describe C there is a problem in the microphone audio 

 circuit for the radio.- As you know C when you talk you hear yourself in t

 he headset.- This is called side-tone.- Your receive audio C what you he

 ar from other people C is working fine on the ground and in the air.- Howe

 ver C in the air when you talk C you hear yourself with noise in your headpho

 nes and the ground folks report your transmissions as garbled.- This clea

 rly describes a microphone audio problem.- 

 -

 Next time you fly C do this:- After airborne C disconnect the microphone pl

 ug of your headset from the aircraft.- If this is a standard type system 

 it will be the smaller of the two plugs.- If it is Russian C then I have n

 o idea.- Leave your headphones plugged in.- 

 -

 Now push your PTT switch (push to talk) or the transmit button C whatever yo

 u want to call it.- If your radio transmits and you hear no noise at all 

 in your headset C then you have found the problem C it is a bad headset. 

 -

 If the noise persists C you have eliminated the headset as the problem.- T

 he issue now is whether the noise is in the wiring TO the radio C or in the 

 radio itself.- The easiest way to determine that is to swap out the radio

 .- However C obviously that can be hard to do.- My guess is that it is i

 n the aircraft wiring.- Some of that old Russian wiring is pretty flimsy 

 and goes through some junction blocks that can be suspect.- The fact that

 it only happens in flight makes it all the more difficult.- I would be c

 urious whether it happens on the ground with the engine running at high pow

 er.- 

 -

 Anyway C that's a start.- And do not forget to disconnect all other headse

 ts in the aircraft before you run this test. 

 -

 Also C in the Baklan system C there are really three things that could cause 

 this:

 -

 1.- The headsets

 2.- The wiring

 3.- The audio interface panel

 4.- The radio.- 

 -

 Again C it could be the radio C but more likely the audio interface panel whi

 ch is kind of underneath the mount C and finally the wiring.- 

 -

 I doubt it is an adjustment.- Just my 2 cents. 

 -

 Mark Bitterlich

 -

 

 --- On Sat C 10/3/09 C psb777 <matronics.com(at)beardsell.com> wrote:

 

 

 From: psb777 <matronics.com(at)beardsell.com>

 Subject: Re: Yak Radio

 

 

 

 Didier C I have a similar radio configuration to you but the opposite proble

 m with the Baklan radio.- The Garmin radio is fine.- I can always hear 

 very well on the Baklan radio but usually the transmissions from it are rep

 orted as inaudible or garbled and so I no longer transmit using it.- Also

  C in flight C when talking on the Baklan radio there is a loud noise in my h

 eadset.- On the ground the Baklan radio works fine.- It feels to me as 

 if a minor adjustment would make things work a lot better.- But I know ve

 ry little!- The local avionics chap has had a look and can find nothing o

 bviously wrong. Regards C Paul

 

 Paul Beardsell HA-YAB Yak-18T

 

 --------

 Paul Beardsell

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=266236#266236

 

 

 le C List Admin.

 

 

 ________________________________ Message 4 _____________________________________

 

 

 Time: 12:22:43 PM PST US

 Subject: RE: Yak Radio

 From: "Bitterlich C Mark G CIV Det Cherry Point C MALS-14 64E" <mark.bitterlich(at)navy.mil>

 

 

 Hello Didier. 

 

 First C did the technician add an audio panel C or did he just switch things with

 relays? I suspect relays. This is not something that can be troubleshot remotely C

 but there are some things you can try. Do you have side-tone? When you

 transmit C can you hear yourself talk perfectly C or is it very weak. 

 

 If it is weak C or not there C then you simply have a receive audio line not connected

 correctly. 

 

 This problem is something that can be fixed C but a person needs to be there with

 the proper test equipment to do it. 

 

 Possibly someone else has some quick suggestions dealing with the audio interface

 panel that is located on the radio rack C but nothing really simple comes to

 mind. It is going to require some testing. Your avionics tech should be called

 back into action I am afraid. 

 

 Mark Bitterlich

 

 

 ________________________________

 

 From: owner-yak-list-server(at)matronics.com on behalf of Didier Blouzard

 Sent: Fri 10/2/2009 4:12 PM

 Subject: Yak Radio

 

 

 Hello to all C

 

 I have a question regarding my radio.

 I have installed both US and russian radio in my plane (overhauled Baklan 5).

 My operator set a switch to change between the US and the russian radio and changed

 the headset plugs to western plugs in order to use regular headset.

 My problem is the following.

 On the US radio C no problems : Emission's fine and reception's fine also.

 On the russian radio C emission seems to be perfect (better than with the US radio)

 but when it comes to listening I can't hear anything. A sound that's so faint

 that it is not understandable.

 I was wondering if some of you had the same problem and of your knowledge is there

 a solution.

 

 Thanks to all and good day

 

 Didier

 Yak18T HA-JAC

 Paris - FRANCE

 

 

 ________________________________ Message 5 _____________________________________

 

 

 Time: 01:22:10 PM PST US

 Subject: RE: oil shut-off valve

 From: "Bitterlich C Mark G CIV Det Cherry Point C MALS-14 64E" <mark.bitterlich(at)navy.mil>

 

 

 Gary that is a completely different shut off valve located at a completely different

 place than I was describing and recommending. With the valve installed

 as you describe C you are absolutely correct and your recommendation is of course

 valid. 

 

 However C apples and oranges are being compared here. I will write up another posting

 and be more specific. 

 

 Thanks C 

 

 Mark Bitterlich

 

 

 ________________________________

 

 From: owner-yak-list-server(at)matronics.com on behalf of Garry Pope

 Sent: Fri 10/2/2009 12:06 PM

 Subject: oil shut-off valve

 

 

 

 Reference to the oil shut-off valve C I have a manual shut-off valve

 installed in the bottom of my oil sump C (CJ with M14P). From there C is

 approx 15" of oil line to the oil pump. When I shut down C I open the left

 access panel in the lower left cowling to close the valve (a red warning

 flag is left hanging out of the opening to prevent starting). This leaves

 that amount of oil in the line to siphon thru the pump during the period of

 storage until the next flight. I also have bottom cylinder drains tied to a

 central shut off drain valve C which I manually open and leave draining to a

 clean container during storage between flights. This does help resolve the

 oil-hydraulic problem.

 

 When I prepare for the first flight of the day C I always pull the prop for 9

 full cylinders (18 blades) and ALWAYS get oil to drain in varying amounts C

 even with the drain valve left open. So to sum up C even with the shutoff

 valve C I would NEVER consider starting the M14P (for the first flight of the

 day) without pulling the (1 blades. I would rather be over cautious than

 chance a hydraulic lock.

 

 

 Garry Pope

 N92864

 "Black Bird"

 

 ---
- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List
Display posts from previous:
	Matronics Email Lists Forum Index -> Yak-List	All times are GMT - 8 Hours
Page 1 of 1
Jump to:
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum