Today's Message Index:
----------------------
1. 06:03 AM - Re: Custom Nanchang Canopy Covers Now Availible (Craig Winkelmann)
2. 06:05 AM - Blackwell Exhaust (Craig Winkelmann)
3. 07:53 AM - Re: Blackwell Exhaust (Mark Davis)
4. 08:19 AM - Re: Re: Custom Nanchang Canopy Covers Now Availible (vectorwarbirds@aol.com)
5. 09:18 AM - Re: Blackwell Exhaust (Nigel Willson)
6. 10:34 AM - Re: Blackwell Exhaust (Mark Davis)
7. 11:09 AM - CJ Main Switch Panel Placard (Barry Hancock)
8. 11:35 AM - Re: Blackwell Exhaust (Nigel Willson)
9. 12:04 PM - Re: Blackwell Exhaust (tjyak50)
10. 01:56 PM - Re: Blackwell Exhaust (A. Dennis Savarese)
Message 1
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| Subject: | Re: Custom Nanchang Canopy Covers Now Availible |
Need one for the CJ with a Malcolm Hood!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=229319#229319
Message 2
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| Subject: | Blackwell Exhaust |
Is anyone out there flying either a Housai or M-14 with Bill's new tuned exhaust?
I am wondering what performance increase you've seen AND what is the change
in exhaust noise (how much louder is it).
Thanks,
Craig
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=229320#229320
Message 3
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| Subject: | Re: Blackwell Exhaust |
My concern, after looking at the pictures of the system, on the typical
M-14P without gapless rings is the potential of a hydraulic lock on the
bottom cylinders that can't drain and puke out the occasional glug of oil
they all do when pulling them through. If it didn't cause a lock, the top
of the wings would have a nice slick black walkway after startup.
Mark Davis
N44YK
----- Original Message -----
From: "Craig Winkelmann" <capav8r@gmail.com>
Sent: Monday, February 09, 2009 7:05 AM
Subject: Yak-List: Blackwell Exhaust
>
> Is anyone out there flying either a Housai or M-14 with Bill's new tuned
> exhaust? I am wondering what performance increase you've seen AND what is
> the change in exhaust noise (how much louder is it).
>
> Thanks,
>
> Craig
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=229320#229320
>
>
> --
> Checked by AVG.
> 1:39 PM
>
>
Message 4
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| Subject: | Re: Custom Nanchang Canopy Covers Now Availible |
Sorry not making those, too many people either just put on one or both canopies
and it just makes it too much trouble at the moment.
Bunndini
-----Original Message-----
From: Craig Winkelmann <capav8r@gmail.com>
Sent: Mon, 9 Feb 2009 7:03 am
Subject: Yak-List: Re: Custom Nanchang Canopy Covers Now Availible
Need one for the CJ with a Malcolm Hood!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=229319#229319
Message 5
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| Subject: | Blackwell Exhaust |
That's why the oil drain kit is a must - AND it's also a must to be used
CORRECTLY!
i.e. Open after engine shutdown and LEAVE open. Only close after pulling
through before start.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis
Sent: 09 February 2009 15:53
Subject: Re: Yak-List: Blackwell Exhaust
My concern, after looking at the pictures of the system, on the typical
M-14P without gapless rings is the potential of a hydraulic lock on the
bottom cylinders that can't drain and puke out the occasional glug of oil
they all do when pulling them through. If it didn't cause a lock, the top
of the wings would have a nice slick black walkway after startup.
Mark Davis
N44YK
----- Original Message -----
From: "Craig Winkelmann" <capav8r@gmail.com>
Sent: Monday, February 09, 2009 7:05 AM
Subject: Yak-List: Blackwell Exhaust
>
> Is anyone out there flying either a Housai or M-14 with Bill's new tuned
> exhaust? I am wondering what performance increase you've seen AND what is
> the change in exhaust noise (how much louder is it).
>
> Thanks,
>
> Craig
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=229320#229320
>
>
> --
> Checked by AVG.
> 1:39 PM
>
>
Message 6
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| Subject: | Re: Blackwell Exhaust |
Nigel,
Even with the oil drain kit in the lower intake tubes opened up on
shutdown, I still get oil out of the stacks at times. That's the oil I'm
worried about backing up into the cylinders or blowing on top of the wing.
Exhaust side, not intake side. On the stock exhaust system any oil that
leaks down into a cylinder with an open exhaust valve can just let gravity
do its thing and run on out just like the oil does on the intake side with a
drain kit.
Mark Davis
N44YK
----- Original Message -----
From: "Nigel Willson" <nigel@yakdisplay.com>
Sent: Monday, February 09, 2009 10:16 AM
Subject: RE: Yak-List: Blackwell Exhaust
>
> That's why the oil drain kit is a must - AND it's also a must to be used
> CORRECTLY!
> i.e. Open after engine shutdown and LEAVE open. Only close after pulling
> through before start.
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis
> Sent: 09 February 2009 15:53
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Blackwell Exhaust
>
>
> My concern, after looking at the pictures of the system, on the typical
> M-14P without gapless rings is the potential of a hydraulic lock on the
> bottom cylinders that can't drain and puke out the occasional glug of oil
> they all do when pulling them through. If it didn't cause a lock, the top
> of the wings would have a nice slick black walkway after startup.
>
> Mark Davis
> N44YK
>
> ----- Original Message -----
> From: "Craig Winkelmann" <capav8r@gmail.com>
> To: <yak-list@matronics.com>
> Sent: Monday, February 09, 2009 7:05 AM
> Subject: Yak-List: Blackwell Exhaust
>
>
>>
>> Is anyone out there flying either a Housai or M-14 with Bill's new tuned
>> exhaust? I am wondering what performance increase you've seen AND what
>> is
>
>> the change in exhaust noise (how much louder is it).
>>
>> Thanks,
>>
>> Craig
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=229320#229320
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> Checked by AVG.
>> 1:39 PM
>>
>>
>
>
> --
> Checked by AVG.
> 6:50 AM
>
>
Message 7
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| Subject: | CJ Main Switch Panel Placard |
Gang,
We can now do custom switch placards for your CJ. These placards
compliment our CJ placard system and are done in a metal photo
process that is just as clean as silk screening and lasts 15 years in
direct sunlight. The placards are in the same style as the original
old style CJ placards (old style was black metal with letters in
silver relief...newer style is paper). A sample is attached. We
will recreate this to match the switches in YOUR airplane. Cost,
including artwork, is $165. Please email me off list if you are
interested.
A complete set of placards can also be done for the Yak, but would
need at least 10 orders to cover initial set up (approx. 20 hours @
$50/hr.).
Happy flying,
Barry
Message 8
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| Subject: | Blackwell Exhaust |
Yes, so do I. That oil is from the inlets that can't be sucked up from the
inlets just by pulling through - so it gets pulled into the cylinders on
start. Because of the drain kit, (in theory) the amount of oil left in the
inlets is too small to hydraulic a cylinder.
Even if the oil backs up on the exhaust side, surely the pull through is
going to force it out of the cylinder via the exhaust valve exhaust anyway?
And then the exhaust valve closes stopping that oil coming back in. The next
stroke is induction (exhaust valve still closed), and the next compression
(still closed). The hydraulic lock only happens on the compression - so the
only way oil can come in for that is from the INLET side - hence the drains
being on the inlets.
Or am I missing something here?
Nigel.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis
Sent: 09 February 2009 18:32
Subject: Re: Yak-List: Blackwell Exhaust
Nigel,
Even with the oil drain kit in the lower intake tubes opened up on
shutdown, I still get oil out of the stacks at times. That's the oil I'm
worried about backing up into the cylinders or blowing on top of the wing.
Exhaust side, not intake side. On the stock exhaust system any oil that
leaks down into a cylinder with an open exhaust valve can just let gravity
do its thing and run on out just like the oil does on the intake side with a
drain kit.
Mark Davis
N44YK
----- Original Message -----
From: "Nigel Willson" <nigel@yakdisplay.com>
Sent: Monday, February 09, 2009 10:16 AM
Subject: RE: Yak-List: Blackwell Exhaust
>
> That's why the oil drain kit is a must - AND it's also a must to be used
> CORRECTLY!
> i.e. Open after engine shutdown and LEAVE open. Only close after pulling
> through before start.
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis
> Sent: 09 February 2009 15:53
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Blackwell Exhaust
>
>
> My concern, after looking at the pictures of the system, on the typical
> M-14P without gapless rings is the potential of a hydraulic lock on the
> bottom cylinders that can't drain and puke out the occasional glug of oil
> they all do when pulling them through. If it didn't cause a lock, the top
> of the wings would have a nice slick black walkway after startup.
>
> Mark Davis
> N44YK
>
> ----- Original Message -----
> From: "Craig Winkelmann" <capav8r@gmail.com>
> To: <yak-list@matronics.com>
> Sent: Monday, February 09, 2009 7:05 AM
> Subject: Yak-List: Blackwell Exhaust
>
>
>>
>> Is anyone out there flying either a Housai or M-14 with Bill's new tuned
>> exhaust? I am wondering what performance increase you've seen AND what
>> is
>
>> the change in exhaust noise (how much louder is it).
>>
>> Thanks,
>>
>> Craig
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=229320#229320
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> Checked by AVG.
>> 1:39 PM
>>
>>
>
>
> --
> Checked by AVG.
> 6:50 AM
>
>
Message 9
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| Subject: | Re: Blackwell Exhaust |
The Blackwell exhaust system has a drain built into it.
Any headers with a low spot are connected to the exhaust drains.
Different from the intake drain since it is high temp.
It prevents any oil from ever building up in the exhaust system.
T-28 has a similar system if I recall, although they just have holes in the exhaust.
Blackwells system drains to a common point.
Actually makes the airplane very tidy.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=229397#229397
Message 10
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| Subject: | Re: Blackwell Exhaust |
All true Nigel. But what happens if the piston is already on the
compression stroke while pulling the prop through and there is
sufficient oil collected in the combustion chamber when the piston gets
to close to TDC? Then it's too late for an opening exhaust valve to be
of any benefit.
Dennis
----- Original Message -----
From: Nigel Willson
To: yak-list@matronics.com
Sent: Monday, February 09, 2009 1:31 PM
Subject: RE: Yak-List: Blackwell Exhaust
Yes, so do I. That oil is from the inlets that can't be sucked up from
the
inlets just by pulling through - so it gets pulled into the cylinders
on
start. Because of the drain kit, (in theory) the amount of oil left in
the
inlets is too small to hydraulic a cylinder.
Even if the oil backs up on the exhaust side, surely the pull through
is
going to force it out of the cylinder via the exhaust valve exhaust
anyway?
And then the exhaust valve closes stopping that oil coming back in.
The next
stroke is induction (exhaust valve still closed), and the next
compression
(still closed). The hydraulic lock only happens on the compression -
so the
only way oil can come in for that is from the INLET side - hence the
drains
being on the inlets.
Or am I missing something here?
Nigel.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis
Sent: 09 February 2009 18:32
To: yak-list@matronics.com
Subject: Re: Yak-List: Blackwell Exhaust
Nigel,
Even with the oil drain kit in the lower intake tubes opened up
on
shutdown, I still get oil out of the stacks at times. That's the oil
I'm
worried about backing up into the cylinders or blowing on top of the
wing.
Exhaust side, not intake side. On the stock exhaust system any oil
that
leaks down into a cylinder with an open exhaust valve can just let
gravity
do its thing and run on out just like the oil does on the intake side
with a
drain kit.
Mark Davis
N44YK
----- Original Message -----
From: "Nigel Willson" <nigel@yakdisplay.com>
To: <yak-list@matronics.com>
Sent: Monday, February 09, 2009 10:16 AM
Subject: RE: Yak-List: Blackwell Exhaust
<nigel@yakdisplay.com>
>
> That's why the oil drain kit is a must - AND it's also a must to be
used
> CORRECTLY!
> i.e. Open after engine shutdown and LEAVE open. Only close after
pulling
> through before start.
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis
> Sent: 09 February 2009 15:53
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Blackwell Exhaust
>
>
> My concern, after looking at the pictures of the system, on the
typical
> M-14P without gapless rings is the potential of a hydraulic lock on
the
> bottom cylinders that can't drain and puke out the occasional glug
of oil
> they all do when pulling them through. If it didn't cause a lock,
the top
> of the wings would have a nice slick black walkway after startup.
>
> Mark Davis
> N44YK
>
> ----- Original Message -----
> From: "Craig Winkelmann" <capav8r@gmail.com>
> To: <yak-list@matronics.com>
> Sent: Monday, February 09, 2009 7:05 AM
> Subject: Yak-List: Blackwell Exhaust
>
>
<capav8r@gmail.com>
>>
>> Is anyone out there flying either a Housai or M-14 with Bill's new
tuned
>> exhaust? I am wondering what performance increase you've seen AND
what
>> is
>
>> the change in exhaust noise (how much louder is it).
>>
>> Thanks,
>>
>> Craig
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=229320#229320
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> Checked by AVG.
>> 1:39 PM
>>
>>
>
>
>
>
>
>
>
>
>
>
>
> --
> Checked by AVG.
> 6:50 AM
>
>
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