Today's Message Index:
----------------------
1. 10:58 AM - Left Lower exhaust (Jim Selby)
2. 11:34 AM - MTV-3 prop (JOSE DEL PESO)
3. 09:11 PM - Nanchang Generator Queries (Jay McIntyre)
Message 1
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| Subject: | Left Lower exhaust |
I'm looking for a left lower exhaust for the housai engine ( good
condition ). If you happen to have one sitting and collecting dust in the
hanger, give me a call if you're interested in selling it. Thank you,
Best Regards
Jim
----- Original Message -----
From: "Yak-List Digest Server" <yak-list@matronics.com>
Sent: Monday, March 30, 2009 11:59 PM
Subject: Yak-List Digest: 4 Msgs - 03/30/09
> *
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> Total Messages Posted Mon 03/30/09: 4
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> Today's Message Index:
> ----------------------
>
> 1. 04:34 AM - Re: Nanchang Oil Scavenge Pump (mnwaust)
> 2. 04:44 PM - Has anyone got a Nanchang voltage regulator? (mnwaust)
> 3. 05:20 PM - Re: Has anyone got a Nanchang voltage regulator? (doug
> sapp)
> 4. 06:18 PM - Re: Re: RC Allen RCA2600 ADI (doug sapp)
>
>
> ________________________________ Message 1
> _____________________________________
>
>
> Time: 04:34:49 AM PST US
> Subject: Yak-List: Re: Nanchang Oil Scavenge Pump
> From: "mnwaust" <tam231@bigpond.com>
>
>
> The problem wasn't the pump, it was a blockage in the lines somewhere.
> Thanks to everyone who emailed me, your advice was very helpful.
>
> Mark
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=236827#236827
>
>
> ________________________________ Message 2
> _____________________________________
>
>
> Time: 04:44:56 PM PST US
> Subject: Yak-List: Has anyone got a Nanchang voltage regulator?
> From: "mnwaust" <tam231@bigpond.com>
>
>
> Hi Guys,
>
> I am trying to to get hold of a voltage regulator for my Nanchang. The one
> I need
> is the older type with the electrical connection lugs on the front. If
> anyone
> has one in stock could you please email me with a price.
>
> Thanks
>
> Mark Norman
> West Australia
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=236938#236938
>
>
> ________________________________ Message 3
> _____________________________________
>
>
> Time: 05:20:59 PM PST US
> Subject: Re: Yak-List: Has anyone got a Nanchang voltage regulator?
> From: doug sapp <dougsappllc@gmail.com>
>
> Mark,
> I have emailed my vendors in China as I find I am out of stock. As of
> today
> they say 1 week to locate one, if found they can ship via Fed Ex direct to
> you.
>
> I do have the solid state regulators in stock, but do not have any
> knowledge
> as to what it takes to convert from the magnetic style to the later solid
> state regulator.
>
> Always Yakin,
> Doug Sapp
>
> On Mon, Mar 30, 2009 at 4:43 PM, mnwaust <tam231@bigpond.com> wrote:
>
>>
>> Hi Guys,
>>
>> I am trying to to get hold of a voltage regulator for my Nanchang. The
>> one
>> I need is the older type with the electrical connection lugs on the
>> front.
>> If anyone has one in stock could you please email me with a price.
>>
>> Thanks
>>
>> Mark Norman
>> West Australia
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=236938#236938
>>
>>
>
>
> --
> Always Yakin,
> Doug Sapp
> Phone 509-826-4610
> Fax 509-826-3644
>
> ________________________________ Message 4
> _____________________________________
>
>
> Time: 06:18:50 PM PST US
> Subject: Re: Yak-List: Re: RC Allen RCA2600 ADI
> From: doug sapp <dougsappllc@gmail.com>
>
> Mark,
> A few years ago I was looking for the same solution and this is what I
> came
> up with:
> There are several companies out there who have in the past made aerobatic
> horizons for use in Citabria and other aerobatic aircraft. These units
> seem
> to hold up well and would suit your needs I think. How ever they are air
> driven. Most are vacuum, a few are vacuum OR pressure. The options to
> drive
> it are few, venturi, electric stand by vac pump, or perhaps scavange some
> air pressure off the aircraft pneumatic system. Either of these will
> work.
> I chose to go with a 28 volt Airborne stand by pump. Unfortunatly I sold
> that aircraft before I ever installed so I cannot tell you "the rest of
> the
> story". Both units now sit on my shelf, $1500.00 takes them both. The
> Airborne pump is factory new, the AI is used.
>
> Doug
>
> On Sat, Mar 28, 2009 at 5:56 AM, marklevy <markwlevy@gmail.com> wrote:
>
>>
>> Thanks for the feedback guys. The reason I'm looking at the new RCA2600
>> (which is, incidentally, fully solid state)is as a replacement for my
>> Russian horizon which is becoming unreliable.
>> I need my replacement ADI to reliably survive continuous acro and be
>> reliable enough for a climb through/descent below cloud to VFR conditions
>> before/after an airshow: this is NOT for serious IFR.
>>
>> I looked at the TRuTrak, but was put off by its use of processed vert
>> speed
>> for pitch information, which, I would have thought would make it very
>> 'twitchy' for stable flight, as I may have up to 4 aircraft formating on
>> me
>> during a climb thru cloud.
>>
>> So the question is: is the TT reasonably pitch stable, and can it handle
>> plenty of acro and still be stable afterwards.
>>
>> I know there are a bunch of nice EFIS boxes out there, but I want to
>> retain
>> the a/c's vintage character panel.
>>
>> Appreciate the help.
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=236509#236509
>>
>>
>
>
> --
> Always Yakin,
> Doug Sapp
> Phone 509-826-4610
> Fax 509-826-3644
>
>
>
Message 2
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Hi,
I'm new in the list. Hello to everybody.
I have just bought a part of a YAK-52. It's with the original wood prop.
I have the oportunity to buy a MTV-3-b-250-21 prop.
Before buying it I'd like to know the following information:
1.- An idea about the improvement in performance compared with the wood
prop.
2.- An idea about the improvement in performance compared with the MYV-9.Thi
is
the prop I usually see installed in the YAKs.
3.-Is the MTV-3 interchangeable with the wood and MTV-9 props ? I mean Do I
have to change the spinner, hub
or other parts?
Thanks.
Jose del Peso
Message 3
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| Subject: | Nanchang Generator Queries |
Hi all...
In a long sordid story I seem to have more Generator issues than I can cope
with. Trying to keep it short, it goes as follows:
Aircraft 'A' is a 'factory overhauled' aircraft from China with a carbon
pile type regulator. From the first engine run it has had a problem where
the ammeter would randomly go from load to unload and back and the generator
light would flicker accordingly. Brushes and springs checked out OK and the
commutator was inspected and cleaned, but after checking them the generator
would not come on line at all. I then flashed the generator and it returned
to the original flickering problem.
(My method of flashing has been to disconnect the generator wiring to
isolate the generator and then connect, from an external 24V source, the
negative lead to the neg post on the generator and then the positive lead to
the field terminal on the generator for approx 5 secs. If you slip off the
positive terminal it certainly 'flashes'!)
We then tried another regulator with no effect and then another generator
from a project aircraft that had been sitting around for some time with no
effect. Flashing it as above did not help... the generator stayed firmly off
line with no flickering.
Another generator from Aircraft 'B' (a currently flying aircraft) was then
fitted and it causes the ammeter to peg out on the discharge side when the
contacts are made and ultimately blows the main power fuse. it does this
with both regulators.
Unfortunately once the generator was put back on the original aircraft
('B') it will now not come on line. Flashing it (as above) does nothing.
This aircraft has a newer style regulation system with the big heat sink on
the firewall and it would appear that for some reason the generator wiring
is reversed from the wiring diagram as what the diagram says is the negative
lead is painted with red paint and shows a residual current through it.
Likewise, what the diagram says is the positive lead seems to go to earth!
Reversing the wiring seems to make no difference as the generator refuses to
come on line.
I am now completely confused and out of ideas. Anyone out there care to
comment???? Particularly on the 2nd aircraft for which I only removed and
refitted the generator (initially!).
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