---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Tue 10/07/03: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:18 AM - Re: Air leak - Don't have much more hair to pull out. (Aubrey Price) 2. 03:13 AM - Re: Air leak - Don't have much more hair to pull out. (A. Dennis Savarese) 3. 09:52 AM - Yak-52 and its implications (Richard Goode) 4. 11:57 AM - fuel vapor (Mark Jefferies YAK UK Ltd) 5. 12:02 PM - air leak (Mark Jefferies YAK UK Ltd) 6. 11:05 PM - home for a while. (cjpilot710@aol.com) ________________________________ Message 1 _____________________________________ Time: 02:18:28 AM PST US From: Aubrey Price Subject: RE: Yak-List: Air leak - Don't have much more hair to pull out. --> Yak-List message posted by: Aubrey Price I did check the gauges in both cockpits. I assume that if the valve beside the pop off were leaking I would see it at the pop off, so I don't think that is a problem. I didn't find the valves under the rear cockpit, but I suspected there was at least one that I missed. I am in Europe. When I return I will check those. How do I get to them? -----Original Message----- From: A. Dennis Savarese [mailto:adsavar@gte.net] Subject: Re: Yak-List: Air leak - Don't have much more hair to pull out. --> Yak-List message posted by: "A. Dennis Savarese" The check valve near the air fill port on the 52 is for the emergency system. The two check valve on the firewall at the right and left side of the pop off valve are for the main air system. The one on the left is from the air fill port. The one on the right is from the "snot" bottle. There are also two check valves under the rear cockpit floor on the right side that go to the brake reducing valve. One from the main system and the other from the emergency system. Did you check the connections at the gauges in each cockpit? I have seen a connection on a gauge leaking. There are two separate connections on each gauge; one to the main system and one to the emergency system. Dennis ----- Original Message ----- From: Subject: Re: Yak-List: Air leak - Don't have much more hair to pull out. > --> Yak-List message posted by: cjpilot710@aol.com > > > In a message dated 10/6/2003 1:34:49 PM Eastern Daylight Time, > aprice@vartec.net writes: > > > > > > > > Last week my YAK52 started leaking down at night ( main system only ). I > > have checked the pop off and put soap on every connection I can find. I have > > disconnected the down stream side of the main air valve and checked to see > > if it was leaking. I have checked at the fill port and it isn't leaking. I > > have removed the airtank, inspected and soap tested it and the fittings.I > > have had several people that have great hearing check and have found > > nothing. The leak is getting worse every day. It will leak from 50ATM to 0 > > in less than 24 hours. I think there is a check valve somewhere that I am > > missing.I tested the check valve near the filler and it's not leaking. This > > almost has to be a leak inside the system or I could hear the leak. The > > drawings I have of the system are bad quality and hard to read.Yesterday I > > pressurized the system with dry Freon and used an electronic devise to sniff > > for leaks. I found one small leak that wouldn't change the system pressure > > 1ATM in a week. Since the Freon detector never found anything inside the > > aircraft, I have to assume the leak is between systems. I cycled the flaps > > and the detector went wild, so I know it was working.I am open for all > > suggustions. > > > > > > Did you check the main air valve it self? I had this problem. It turned out > that the valve seat is aluminum while the valve itself is common steel. What > I found was a nice ball of rust (valve) and a very very thin grove on the > valve seat. It continued to leak even after replacing the valve with a stainless > steel valve from Bill Blackwell. It was not until I refaced the valve seat > it self, did I get a good seal which lasts me a good month at times between > starts - when I remember to close it of course :} > > Jim Goolsby > > "They that can give up essential liberty to obtain a little safety, > deserve neither liberty nor safety" > Benjamin Franklin 1759 > "With my shield, or on it" > Trojan Warriors BC > "The reason older men are like fine wine. When young, they are like grapes > until some woman stomps all over them." > Unknown older man. > > > "Arial" LANG"0">In a message dated 10/6/2003 1:34:49 PM Eastern Daylig= > ht Time, aprice@vartec.net writes:
>
>
: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">>
>
> Last week my YAK52 started leaking down at night ( main system only ). I
> have checked the pop off and put soap on every connection I can find. I have= >
> disconnected the down stream side of the main air valve and checked to see R> > if it was leaking. I have checked at the fill port and it isn't leaking. I R> > have removed the airtank, inspected and soap tested it and the fittings.I > > have had several people that have great hearing check and have found
> nothing. The leak is getting worse every day. It will leak from 50ATM to 0 R> > in less than 24 hours. I think there is a check valve somewhere that I am > > missing.I tested the check valve near the filler and it's not leaking. This<= > BR> > almost has to be a leak inside the system or I could hear the leak. The
> drawings I have of the system are bad quality and hard to read.Yesterday I R> > pressurized the system with dry Freon and used an electronic devise to sniff= >
> for leaks. I found one small leak that wouldn't change the system pressure R> > 1ATM in a week. Since the Freon detector never found anything inside the
> aircraft, I have to assume the leak is between systems. I cycled the flaps R> > and the detector went wild, so I know it was working.I am open for all
> suggustions.
>
>

>
> Did you check the main air valve it self?  I had this problem.  It= > turned out that the valve seat is aluminum while the valve itself is common= > steel.  What I found was a nice ball of rust (valve) and a very very t= > hin grove on the valve seat.  It continued to leak even after replacing= > the valve with a stainless steel valve from Bill Blackwell.  It was no= > t until I refaced the valve seat it self, did I get a good seal which lasts=20= > me a good month at times between starts - when I remember to close it of cou= > rse :}
>
> FACE"Jimsrs" LANG"0">Jim Goolsby "BACKGROUND-COLOR: #ffffff" SIZE2 FAMILY"SANSSERIF" FACE"Arial"=20= > LANG"0">
>
> "They that can give up essential liberty to obtain a little safety,
> deserve neither liberty nor safety"
>             &nbs = > p;            &n = > bsp;             = >            Benjamin Fra= > nklin 1759
> "With my shield, or on it"
>             &nbs = > p;            &n = > bsp;             = >            Trojan Warri= > ors BC
> "The reason older men are like fine wine.  When young, they are like gr= > apes until some woman stomps all over them."
>             &nbs = > p;            &n = > bsp;             = >            Unknown olde= > r man.
> > > ________________________________ Message 2 _____________________________________ Time: 03:13:27 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Air leak - Don't have much more hair to pull out. --> Yak-List message posted by: "A. Dennis Savarese" Remove the floor panels where your right foot would rest in the rear cockpit. Dennis ----- Original Message ----- From: "Aubrey Price" Subject: RE: Yak-List: Air leak - Don't have much more hair to pull out. > --> Yak-List message posted by: Aubrey Price > > I did check the gauges in both cockpits. I assume that if the valve beside > the pop off were leaking I would see it at the pop off, so I don't think > that is a problem. I didn't find the valves under the rear cockpit, but I > suspected there was at least one that I missed. I am in Europe. When I > return I will check those. How do I get to them? > -----Original Message----- > From: A. Dennis Savarese [mailto:adsavar@gte.net] > To: yak-list@matronics.com > Subject: Re: Yak-List: Air leak - Don't have much more hair to pull out. > > > --> Yak-List message posted by: "A. Dennis Savarese" > > The check valve near the air fill port on the 52 is for the emergency > system. The two check valve on the firewall at the right and left side of > the pop off valve are for the main air system. The one on the left is from > the air fill port. The one on the right is from the "snot" bottle. There > are also two check valves under the rear cockpit floor on the right side > that go to the brake reducing valve. One from the main system and the other > from the emergency system. > > Did you check the connections at the gauges in each cockpit? I have seen a > connection on a gauge leaking. There are two separate connections on each > gauge; one to the main system and one to the emergency system. > Dennis > > ----- Original Message ----- > From: > To: > Subject: Re: Yak-List: Air leak - Don't have much more hair to pull out. > > > > --> Yak-List message posted by: cjpilot710@aol.com > > > > > > In a message dated 10/6/2003 1:34:49 PM Eastern Daylight Time, > > aprice@vartec.net writes: > > > > > > > > > > > > Last week my YAK52 started leaking down at night ( main system only ). I > > > have checked the pop off and put soap on every connection I can find. I > have > > > disconnected the down stream side of the main air valve and checked to > see > > > if it was leaking. I have checked at the fill port and it isn't leaking. > I > > > have removed the airtank, inspected and soap tested it and the > fittings.I > > > have had several people that have great hearing check and have found > > > nothing. The leak is getting worse every day. It will leak from 50ATM to > 0 > > > in less than 24 hours. I think there is a check valve somewhere that I > am > > > missing.I tested the check valve near the filler and it's not leaking. > This > > > almost has to be a leak inside the system or I could hear the leak. The > > > drawings I have of the system are bad quality and hard to read.Yesterday > I > > > pressurized the system with dry Freon and used an electronic devise to > sniff > > > for leaks. I found one small leak that wouldn't change the system > pressure > > > 1ATM in a week. Since the Freon detector never found anything inside the > > > aircraft, I have to assume the leak is between systems. I cycled the > flaps > > > and the detector went wild, so I know it was working.I am open for all > > > suggustions. > > > > > > > > > > Did you check the main air valve it self? I had this problem. It turned > out > > that the valve seat is aluminum while the valve itself is common steel. > What > > I found was a nice ball of rust (valve) and a very very thin grove on the > > valve seat. It continued to leak even after replacing the valve with a > stainless > > steel valve from Bill Blackwell. It was not until I refaced the valve > seat > > it self, did I get a good seal which lasts me a good month at times > between > > starts - when I remember to close it of course :} > > > > Jim Goolsby > > > > "They that can give up essential liberty to obtain a little safety, > > deserve neither liberty nor safety" > > Benjamin Franklin 1759 > > "With my shield, or on it" > > Trojan Warriors BC > > "The reason older men are like fine wine. When young, they are like > grapes > > until some woman stomps all over them." > > Unknown older man. > > > > > > > "Arial" LANG"0">In a message dated 10/6/2003 1:34:49 PM Eastern Daylig= > > ht Time, aprice@vartec.net writes:
> >
> >
> : 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">>
> >
> > Last week my YAK52 started leaking down at night ( main system only ). > I
> > have checked the pop off and put soap on every connection I can find. I > have= > >
> > disconnected the down stream side of the main air valve and checked to > see > R> > > if it was leaking. I have checked at the fill port and it isn't leaking. > I > R> > > have removed the airtank, inspected and soap tested it and the > fittings.I > > > > have had several people that have great hearing check and have found
> > nothing. The leak is getting worse every day. It will leak from 50ATM to > 0 > R> > > in less than 24 hours. I think there is a check valve somewhere that I > am > > > > missing.I tested the check valve near the filler and it's not leaking. > This<= > > BR> > > almost has to be a leak inside the system or I could hear the leak. > The
> > drawings I have of the system are bad quality and hard to read.Yesterday > I > R> > > pressurized the system with dry Freon and used an electronic devise to > sniff= > >
> > for leaks. I found one small leak that wouldn't change the system > pressure > R> > > 1ATM in a week. Since the Freon detector never found anything inside > the
> > aircraft, I have to assume the leak is between systems. I cycled the > flaps > R> > > and the detector went wild, so I know it was working.I am open for all
> > suggustions.
> >
> >

> >
> > Did you check the main air valve it self?  I had this problem.  > It= > > turned out that the valve seat is aluminum while the valve itself is > common= > > steel.  What I found was a nice ball of rust (valve) and a very very > t= > > hin grove on the valve seat.  It continued to leak even after > replacing= > > the valve with a stainless steel valve from Bill Blackwell.  It was > no= > > t until I refaced the valve seat it self, did I get a good seal which > lasts=20= > > me a good month at times between starts - when I remember to close it of > cou= > > rse :}
> >
> > > FACE"Jimsrs" LANG"0">Jim Goolsby > "BACKGROUND-COLOR: #ffffff" SIZE2 FAMILY"SANSSERIF" FACE"Arial"=20= > > LANG"0">
> >
> > "They that can give up essential liberty to obtain a little safety,
> > deserve neither liberty nor safety"
> > >             &nbs > > > > p;            &n > > > > bsp;             > > >            Benjamin > Fra= > > nklin 1759
> > "With my shield, or on it"
> > >             &nbs > > > > p;            &n > > > > bsp;             > > >            Trojan > Warri= > > ors BC
> > "The reason older men are like fine wine.  When young, they are like > gr= > > apes until some woman stomps all over them."
> > >             &nbs > > > > p;            &n > > > > bsp;             > > >            Unknown > olde= > > r man.
> > > > > > > > ________________________________ Message 3 _____________________________________ Time: 09:52:42 AM PST US From: "Richard Goode" Subject: Yak-List: Yak-52 and its implications --> Yak-List message posted by: "Richard Goode" Dear Yak Club Yak-52M and its implications The Russian airforce has long needed a new training aircraft. They have for= many years used the L-39, even for basic airforce training, but obviously with high associated costs. The Yak-52s have been operated principally by R= OSTO, the successor to DOSAAF, in more of a sport-flying role, and of cours= e many 52s have been exported to the West. An internal competition was established between Sukhoi and Yakovlev, result= ing in the Su-49, an all composite, tricycle version of the Su-29 and the Y= ak-54M, similarly a modified Yak-54. Both aircraft were to be powered by a 450hp engine, and incorporate the Zvesda Pilot Extraction Systems. The airforce was not keen on a composite aircraft, both because of signific= antly greater cost, but also because of the problems of repairing localised= damage, but Sukhoi has considerably more governmental influence than Yakov= lev, and apparently won the competition. However there remained critical sh= ortage in Russian military funding, and while a mock up Su-49 has been buil= t, OKB Sukhoi are not prepared to make a flying prototype without governmen= t funding, and thus far none has been forth coming. In consequence the airf= orce has looked again at the Yak-52, and a new version, the 52M, was shown at this years Moscow airshow. The basic airframe would appear to be unchang= ed, but the principal differences seem to be: a.. 420/450hp engine and 3-blade propeller. b.. Large sideways-hinging canopy. c.. Zvesda Extraction seats. d.. A "glass" cockpit. e.. "Strengthened" wing - apparently increasing "life" from a thousand ho= urs to three thousand hours! f.. Long range fuel. The potential requirement is for up to four hundred aircraft made from 'old= 52s', and, should this happen; it would surely remove the vast majority of= good condition 52s from the potential market for Western owners. Like most= things in Russia these decisions are unlikely to be made quickly, but once= it does things could change rapidly! (In passing the Ukrainians are planin= g to make a turbine version of the 52 for their airforce training requireme= nts). Richard Goode Richard Goode Aerobatics Newport House Almeley Hereford HR3 6LL Tel: +44 (0) 1544 322200 Fax:+44 (0) 1544 322208 www.russianaeros.com -- This message has been scanned for viruses and dangerous content by the http://www.anti84787.com MailScanner, and is believed to be clean. --

Dear Yak Club

Yak-52M and its implications

The Russian airforce has long needed a new training aircraft. They have for many years used the L-39, even for basic airforce training, but obviously w= ith high associated costs. The Yak-52s have been operated principally by ROSTO,= the successor to DOSAAF, in more of a sport-flying role, and of course many 52s= have been exported to the West.

An internal competition was established between Sukhoi and Yakovlev, resulting in the Su-49, an all composite, tricycle version of the Su-29 and= the Yak-54M, similarly a modified Yak-54. Both aircraft were to be powered by a= 450hp engine, and incorporate the Zvesda Pilot Extraction Systems.

The airforce was not keen on a composite aircraft, both because of significantly greater cost, but also because of the problems of repairing= localised damage, but Sukhoi has considerably more governmental influence t= han Yakovlev, and apparently won the competition. However there remained critic= al shortage in Russian military funding, and while a mock up Su-49 has been bu= ilt, OKB Sukhoi are not prepared to make a flying prototype without government= funding, and thus far none has been forth coming. In consequence the airfor= ce has looked again at the Yak-52, and a new version, the 52M, was shown at th= is years Moscow airshow. The basic airframe would appear to be unchanged, but the principal differences seem to be:

  • 420/450hp engine and 3-blade propeller.
  • Large sideways-hinging canopy.
  • Zvesda Extraction seats.
  • A "glass" cockpit.
  • "Strengthened" wing - apparently increasing "life" from a thousand ho= urs to three thousand hours!
  • Long range fuel.

The potential requirement is for up to four hundred aircraft made from '= old 52s', and, should this happen; it would surely remove the vast majority of good condition 52s from the potential market for Western owners. Like most thing= s in Russia these decisions are unlikely to be made quickly, but once it does th= ings could change rapidly! (In passing the Ukrainians are planing to make a turb= ine version of the 52 for their airforce training requirements).

Richard Goode

Richard Goode Aerobatics
Newport= House
Almeley
Hereford
HR3 6LL
 
Tel: +44 (0) 1544 322200
Fax:+44 (0) 1544 322208
www.russianaeros.com
<= -------------
This message has been scanned for viruses and
dangerous content by the http://www.anti84787.com
MailScanner, and is believed to be clean. ------- ________________________________ Message 4 _____________________________________ Time: 11:57:03 AM PST US From: "Mark Jefferies YAK UK Ltd" Subject: Yak-List: fuel vapor type="multipart/alternative" --> Yak-List message posted by: "Mark Jefferies YAK UK Ltd" Its most likely that the fuel is entering the vent pipe whilst inverted. Then when you errect it flows out to the underside of the a/c, this being a high pressure area then vents to the low pressure area ie the cockpit entering via the fairings and other joints. On the 50 make sure that the vent is actually outside the the cockpit behind the seat area, if you have the early vent which exits behine the exhaust area move it aft. cheers, MJ Time: 07:47:52 AM PST US Subject: Yak-List: fuel vapour in cockpit while inverted/negative G From: "BUTLER, FRANCIS" --> Yak-List message posted by: "BUTLER, FRANCIS" I have had three Yaks, (1) 52 and (2)50's, that after sustained negative G, I can smell fuel vapour in the cockpit. Is this common on all 52 and 50's? I am doing more negative stuff with my 50 now and would like to find a solution. Francis Butler Butler Machinery Co. (701) 298-1758 direct (701) 476-3208 fax francis_butler@butler-machinery.com href"file://C:\Program Files\Common Files\Microsoft Shared\Stationery\">
Its most likely that the fuel is entering the vent pipe whilst inverted. Then when you errect it flows out to the underside of the a/c, this being a high pressure area then vents to the low pressure area ie the cockpit entering via the fairings and other joints.
 
On the 50 make sure that the vent is actually outside the the cockpit behind the seat area, if you have the early vent which exits behine the exhaust area move it aft.
 
cheers, MJ
 
Time: 07:47:52 AM PST US
Subject: Yak-List: fuel vapour in cockpit while inverted/negative G
From: "BUTLER, FRANCIS" <FRANCIS_BUTLER@butler= -machinery.com>

--> Yak-List message posted by: "BUTLER, FRANCIS" <FRANCIS_BUTLER@butler= -machinery.com>


I have had three Yaks, (1) 52 and (2)50's, that after sustained negative G, I can
smell fuel vapour in the cockpit.  Is this common on all 52 and 50's?  I am
doing more negative stuff with my 50 now and would like to find a solution. 

Francis Butler
Butler Machinery Co.
(701) 298-1758  direct
(701) 476-3208  fax
francis_butler@butler= -machinery.com
 
name="Redback.gif" R0lGODlhsAQiALMAADc3Nz4+PktLS2RkZP8AAIeHh62trc/Pz+np6ff39/39/f////////////// /////yH+FkdJRiBTbWFydFNhdmVyIFZlcjEuMWEALAAAAACwBCIAAAT+kMhJq70YBDGKOUiiLGRp nmiqrmzrvnAsz3Rt33iu73zv/8CgcEgsGo/IpHLJbDqf0CgPQ61SNRwPSCTter/gsHhMLpvP6LR6 zW673yarfI7tfEIjuH7P7/v/gIGCg4SFhoc+c4pXG3ZbeYiRkpOUlZaXmJmam5eLnhV1WnicpKWm p6ipqqusrWKfsAShd1yutre4ubq7vL2+UrGfs4+/xcbHyMnKy8x/wZ7Do83T1NXW19jZzc+L0bXa 4OHi4+Tl5mjcit6Q5+3u7/Dx8u7pdI2i3/P6+/z9/v+b6slZB7CgwYMIEyoEJrAKwYUQI0qcSHFi Q4f3aLGryLGjx4/EIKldZJRFY8iTKFOqXMlpZIaMxFjKnEmzpk0zLi88vMmzp8+fQG/ktLAzqNGj SJPKHAoKpjSlUKNKnWqQKYWiVLNq3cr1mtUJWLuKHUu2LKuvEsKaXcu2rdtBaGU5zfe2rt27eMfE VZu3r9+/gHvsnbsxsOHDiBPHQctXsePHkM0OLhkzsuXLmKlOdvQ0s+fPoG1uxlc4tOnTqC0yJpy6 tevXBUebhE27tu1ysivf3s27d7LcnX0LH0787GrKwYsrX86cEgA7 ________________________________ Message 5 _____________________________________ Time: 12:02:05 PM PST US From: "Mark Jefferies YAK UK Ltd" Subject: Yak-List: air leak type="multipart/alternative" --> Yak-List message posted by: "Mark Jefferies YAK UK Ltd" Check the "o" ring on the air taps, this is a week point and covers about 80% of over night leaks. The 52 does not suffer from porus pipe like the 50. The pipe made in ashenyev is "crap", the Y55 also has porus pipe. The 52 pipe will crack first!!! ------- Best regards Mark Jefferies Managing director YAK UK Ltd + Little Gransden Airfield, Sandy, Beds SG19 3BP, England. * mark@yakuk.com : www.yakuk.com ( +44 (0)1767 651156 Office ( +44 (0)1767 651157 Fax ( +44 (0)7785 538 317 Mobile Time: 10:33:50 AM PST US From: Aubrey Price Subject: Yak-List: Air leak - Don't have much more hair to pull out. --> Yak-List message posted by: Aubrey Price Last week my YAK52 started leaking down at night ( main system only ). I have checked the pop off and put soap on every connection I can find. I have disconnected the down stream side of the main air valve and checked to see if it was leaking. I have checked at the fill port and it isn't leaking. I have removed the airtank, inspected and soap tested it and the fittings.I have had several people that have great hearing check and have found nothing. The leak is getting worse every day. It will leak from 50ATM to 0 in less than 24 hours. I think there is a check valve somewhere that I am missing.I tested the check valve near the filler and it's not leaking. This almost has to be a leak inside the system or I could hear the leak. The drawings I have of the system are bad quality and hard to read.Yesterday I pressurized the system with dry Freon and used an electronic devise to sniff for leaks. I found one small leak that wouldn't change the system pressure 1ATM in a week. Since the Freon detector never found anything inside the aircraft, I have to assume the leak is between systems. I cycled the flaps and the detector went wild, so I know it was working.I am open for all suggustions. Aubrey Price N288Y ------- Best regards Mark Jefferies Managing director YAK UK Ltd + Little Gransden Airfield, Sandy, Beds SG19 3BP, England. * mark@yakuk.com : www.yakuk.com ( +44 (0)1767 651156 Office ( +44 (0)1767 651157 Fax ( +44 (0)7785 538 317 Mobile href"file://C:\Program Files\Common Files\Microsoft Shared\Stationery\">
Check the "o" ring on the air taps, this is a week point and covers about 80% of over night leaks. The 52 does not suffer from porus pipe like the 50. The pipe made in ashenyev is "crap", the Y55 also has porus pipe. The 52 pipe will crack first!!!
 
Best regards
Mark Jefferies
Managing director YAK UK Ltd
+ Little Gransden Airfield, Sandy, Beds SG19 3BP, England.
* mark@yakuk.com
: www.yakuk.com
( +44 (0)1767 651156 Office
( +44 (0)1767 651157 Fax
( +44 (0)7785 538 317 Mobile
 
 
 
 
 
Time: 10:33:50 AM PST US
From: Aubrey Price <aprice@vartec.net>
Subject: Yak-List: Air leak - Don't have much more hair to pull out.

--> Yak-List message posted by: Aubrey Price <aprice@vartec.net>

Last week my YAK52 started leaking down at night ( main system only ). I
have checked the pop off and put soap on every connection I can find. I have
disconnected the down stream side of the main air valve and checked to see
if it was leaking. I have checked at the fill port and it isn't leaking. I
have removed the airtank, inspected and soap tested it and the fittings.I
have had several people that have great hearing check and have found
nothing. The leak is getting worse every day. It will leak from 50ATM to 0
in less than 24 hours. I think there is a check valve somewhere that I am
missing.I tested the check valve near the filler and it's not leaking. This
almost has to be a leak inside the system or I could hear the leak. The
drawings I have of the system are bad quality and hard to read.Yesterday I
pressurized the system with dry Freon and used an electronic devise to sniff
for leaks. I found one small leak that wouldn't change the system pressure
1ATM in a week. Since the Freon detector never found anything inside the
aircraft, I have to assume the leak is between systems. I cycled the flaps
and the detector went wild, so I know it was working.I am open for all
suggustions.

Aubrey Price
N288Y
Best regards
Mark Jefferies
Managing director YAK UK Ltd
+ Little Gransden Airfield, Sandy, Beds SG19 3BP, England.
* mark@yakuk.com
: www.yakuk.com
( +44 (0)1767 651156 Office
( +44 (0)1767 651157 Fax
( +44 (0)7785 538 317 Mobile
 
 
 
 
name="Redback.gif" R0lGODlhsAQiALMAADc3Nz4+PktLS2RkZP8AAIeHh62trc/Pz+np6ff39/39/f////////////// /////yH+FkdJRiBTbWFydFNhdmVyIFZlcjEuMWEALAAAAACwBCIAAAT+kMhJq70YBDGKOUiiLGRp nmiqrmzrvnAsz3Rt33iu73zv/8CgcEgsGo/IpHLJbDqf0CgPQ61SNRwPSCTter/gsHhMLpvP6LR6 zW673yarfI7tfEIjuH7P7/v/gIGCg4SFhoc+c4pXG3ZbeYiRkpOUlZaXmJmam5eLnhV1WnicpKWm p6ipqqusrWKfsAShd1yutre4ubq7vL2+UrGfs4+/xcbHyMnKy8x/wZ7Do83T1NXW19jZzc+L0bXa 4OHi4+Tl5mjcit6Q5+3u7/Dx8u7pdI2i3/P6+/z9/v+b6slZB7CgwYMIEyoEJrAKwYUQI0qcSHFi Q4f3aLGryLGjx4/EIKldZJRFY8iTKFOqXMlpZIaMxFjKnEmzpk0zLi88vMmzp8+fQG/ktLAzqNGj SJPKHAoKpjSlUKNKnWqQKYWiVLNq3cr1mtUJWLuKHUu2LKuvEsKaXcu2rdtBaGU5zfe2rt27eMfE VZu3r9+/gHvsnbsxsOHDiBPHQctXsePHkM0OLhkzsuXLmKlOdvQ0s+fPoG1uxlc4tOnTqC0yJpy6 tevXBUebhE27tu1ysivf3s27d7LcnX0LH0787GrKwYsrX86cEgA7 ________________________________ Message 6 _____________________________________ Time: 11:05:03 PM PST US From: cjpilot710@aol.com Subject: Yak-List: home for a while. --> Yak-List message posted by: cjpilot710@aol.com Well gang, Finaly caught up on all my e-mail. Just got back from 2 weeks of flying the B-24 for the Collings Foundation. It all started in Nasua, NH, where on arriving, I had to jump right in and help change a bad cylinder on the B-17. This is an oily mess no matter how you do it. About 5 days later we had to make a NDB approach into Oxford, CT. (the ILS was OS). When was the last time you've done a fixed card ADF approach to minimums? And did I tell you the B-24 leaks? During this trip, I was interviewed by newspapers, TV, and even did a local live radio interview. Yes, I've had more than my 15 seconds of fame. In Newburg, NY we change tires on the B-17. This happens about every 4 or 5 months. These tires cost $2,500 new, ($800 recap) and the tubes are $500 a shot. BTW tires are made in lots of 100 only. I finished up my part of the tour at Pittsburgh's Allegheny airport. What should show up on the ramp and garner almost as much attention as our bombers? An unpainted CJ-6A owned by Ed Lovejoy. He has owned it a couple of years, I think he said. I wasn't able to talk long because I was "working" but my fellow bomber pilots were hearing a lot of "What is that airplane?" by the folks who were walking though ours. I had to chase a number of them away because they were passing over our crowd control ropes for a look-see. As usual I met a lot of nice WW2 vets, perhaps the best part of this "job". The school kids are always full of questions, particularly about the nude painted on the side of the B-24. Up at Pittsfeild, MA. some 'lady' call to say she was going to sue us, because she was offended by it. Yes folks, they're still out there, dumb as ever! Hey! Just heard. Gen. Yeager just ground hoop a AT-6. Banged it up some too. Hmmmmm "Those who have and those who - - - -" Anyway will go back out on the 28th and finish the season on Nov 9, at the Columbia, SC airshow. Will than fly the plane down to Florida for its winter maintenance. ITMT is anyone wanting to do some CJ/Yak formation near here? :-) Jim Goolsby "They that can give up essential liberty to obtain a little safety, deserve neither liberty nor safety" Benjamin Franklin 1759 "With my shield, or on it" Trojan Warriors BC "The reason older men are like fine wine. When young, they are like grapes until some woman stomps all over them." Unknown older man. Well gang,
Finaly caught up on all my e-mail.
Just got back from 2 weeks of flying the B-24 for the Collings Foundation.&n= bsp; It all started in Nasua, NH, where on arriving, I had to jump right in=20= and help change a bad cylinder on the B-17.  This is an oily mess no ma= tter how you do it.  About 5 days later we had to make a NDB approach i= nto Oxford, CT. (the ILS was OS).  When was the last time you've done a= fixed card ADF approach to minimums?  And did I tell you the B-24 leak= s?  During this trip, I was interviewed by newspapers, TV, and even did= a local live radio interview.  Yes, I've had more than my 15 seconds o= f fame. 

In Newburg, NY we change tires on the B-17.  This happens about every 4= or 5 months.  These tires cost $2,500 new, ($800 recap) and the tubes=20= are $500 a shot.  BTW tires are made in lots of 100 only.  I finis= hed up my part of the tour at Pittsburgh's Allegheny airport.  What sho= uld show up on the ramp and garner almost as much attention as our bombers?&= nbsp; An unpainted CJ-6A owned by Ed Lovejoy.  He has owned it a couple= of years, I think he said.  I wasn't able to talk long because I was "= working" but my fellow bomber pilots were hearing a lot of "What is that air= plane?" by the folks who were walking though ours.  I had to chase a nu= mber of them away because they were passing over our crowd control ropes for= a look-see.

As usual I met a lot of nice WW2 vets, perhaps the best part of this "job".&= nbsp; The school kids are always full of questions, particularly about the n= ude painted on the side of the B-24.  Up at Pittsfeild, MA. some 'lady'= call to say she was going to sue us, because she was offended by it. =20= Yes folks, they're still out there, dumb as ever!

Hey!  Just heard.  Gen. Yeager just ground hoop a AT-6.  Bang= ed it up some too.  Hmmmmm  "Those who have and those who - - - -"=

Anyway will go back out on the 28th and finish the season on Nov 9, at the C= olumbia, SC airshow.  Will than fly the plane down to Florida for its w= inter maintenance.  ITMT is anyone wanting to do some CJ/Yak formation=20= near here?  :-)

Jim Goolsby


"They that can give up essential liberty to obtain a little safety,
deserve neither liberty nor safety"
            &nbs= p;            &n= bsp;            =            Benjamin Fra= nklin 1759
"With my shield, or on it"
            &nbs= p;            &n= bsp;            =            Trojan Warri= ors BC
"The reason older men are like fine wine.  When young, they are like gr= apes until some woman stomps all over them."
            &nbs= p;            &n= bsp;            =            Unknown olde= r man.