Today's Message Index:
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1. 01:31 AM - Re: Re: Removing chinese radio kit from cj6 (Didier Blouzard)
2. 04:51 AM - Re: Yak52 electrical failure (Rob Rowe)
3. 09:40 AM - Re:. (James Partington)
4. 12:53 PM - SNF Damage (Cpayne)
5. 04:04 PM - Re: SNF Damage (Timothy Stevens)
6. 06:06 PM - retirement (FamilyGage@aol.com)
Message 1
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| Subject: | Re: Removing chinese radio kit from cj6 |
I had a warning from the Yak russian people concerning all these mod on
Yak's.
BEWARE OF THE EFFECT OF NEW MASS REPARTITION
All these devices had been taken in account when testing the plane.
Change in repartition could have a very bad effect on the inverted spin
recovery.
No other comments....
Didier
2011/4/28 Adrian Coop Cooper <cooperairracing@gmail.com>
> cooperairracing@gmail.com>
>
> Harv.
> Mine is a 1988 as well. However, mine has a mechanical voltage regulator
> behind the firewall whilst my Buddies (same batch) has an electronic voltage
> regulator on the shelf between cockpits which I suspect was an air force
> installed mod.
> I did manage to remove 166lbs of surplus wiring and tube radios including
> the complete ADF system. However, I did keep the Magnuson type compass in
> both panels which requires that remote system with the little window just
> before the tail. It is a very nice feature as you can use it as a bug ...
> sort of like a very poor man's RMI. I also kept the inverters and the nice
> electric DGs
> So be careful not to remove something you might still like to have. My
> electrical Guru did a great job rewiring and I am running two King 196 VHFs
> a Garmin TX and a self enclosed Narco ILS all very nice and of course light
> weight. Once the ADF antenna and box is removed you can re-configure. Some
> folk modify the ADF box for tool and spare oil storage. Perhaps, a better
> alternative is to remove the ADF box's shelf aft and reconfigure as the
> battery (batteries 2x12v, modern, sealed, which will fit in the existing
> box) shelf. That then gives loads of room for a secure luggage area. This
> you can ensure is sealed to prevent FOD making its way back to cables and
> pulleys and still have a port and starboard access door as well as access
> from behind the rear seat. NB, the starboard access door is smaller than the
> one on the port side, so plan accordingly. This then leaves you the large
> removable panel on the starboard side, not only can you have the battery(s)
> there but it might be !
> a good spot for a smoke tank. Of course this is all CofG and weight and
> balance dependent. I agree about not carrying excess weight at today's
> horrendous fuel prices. Be safe and good luck. Coop.
>
> --------
> Coop
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=338229#338229
>
>
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
Message 2
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| Subject: | Re: Yak52 electrical failure |
Nigel,
All good advice you've been given ... have some further thoughts for your consideration
which may be carried out from the relative comfort of the rear cockpit
without having to get inside relay boxes etc.
With ref to the attached simple schematic of the battery power feed.
1 - With the Master Switch set to 'Battery' check to see if the REAR cockpit 'Battery
On' annunciator light is illuminated.
If it is lit then most likely the DC Relay Box relay coil #6 ('BAT/1' - my nomenclature)
has failed open / bad connections / mechanically failed, which can be
replaced temporarily with #7 ('GDP/1' - my nomenclature) ... as already advised.
The Russian relay type is 'TKD-501DOD' (anglicised).
Note - there is a 2A annunciator light fuse that could also stop this lighting,
but very unlikely this will have blown
2 - If the 'Battery On' light is not lit, then turn the Master Switch OFF & try
the following;
a/ in the REAR cockpit gently remove the green tinted plastic cover off the 'Battery
On' annunciator light & remove the two bulbs inside
b/ obtain an electrical multimeter and set a RESISTANCE range of 0-2000 ohms (or
similar), use this to measure the resistance across the bulb socket contacts
(either socket will do as they're wired in parallel)
c/ no reading (open circuit) - double check you've made good connections. Or previously
mentioned 2A fuse has blown or relay #6 coil connections are bad in relay
box
d/ meter reads close to zero ohms - the relay coil #6 has failed short and probably
taken out the 50A fuse with it. Test 50A fuse continuity first. Then remove
relay #6, retest to make sure the short has been removed, replace with relay
#7, retest again to make sure the short has been removed and only then replace
the 50A fuse as needed
e/ meter reads somewhere between 50 to 400 ohms - suggests the relay coil #6 is
OK (it may have mechanically failed though), therefore either the Master Switch
has failed and is not providing an earth or something else such as a wiring
fault. If meter reading much higher than 400 ohms then possibly relay coil #6
connections are poor.
f/ Master Switch failure - with the Master Switch still OFF, set your multimeter
to a DC VOLTS range of 200V (or similar). Place the black lead on a bare metal
chassis earth point and the red lead on each of the bulb socket contacts in
turn. If you get a voltage reading on both contacts of c.24V then the Master
Switch, or its intermediate wiring, is failing to complete the circuit by not
providing an earth (it also proves your 50A fuse is intact)
g/ Wiring fault - you need to get a professional avionics guy in to help as this
is non trivial to identify
WARNING - this is theory, I've not done this myself so YMMV ... however little
harm can be done either. It's not intended to cover every eventuality but should
at least help localise the issue.
As always though if in doubt ... don't!
Hope this helps.
Brgds, Rob Rowe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=338278#338278
Attachments:
http://forums.matronics.com//files/yak_52_power_schema_113.jpg
Message 3
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http://www.benesseretotale.com/cool01.11.php?ID=031
Message 4
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I read that a CJ was damaged by the tornado at SNF. Who's was it? The warbird line
guys did a great job and looked out for all the 'birds, tying those down that
were left loose. Mine received only superficial damage from the hanger door
pushing in off it's track.
Craig Payne
Message 5
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Craig:
The "undamaged" CJ was part of the Northeast Raider gang down for a break for the
lousy weather in the north. Hah!
Mort Stoverud from NJ was parked near the IAC area along with two yak 52's. Mort's
plane lifted out of the tie downs and was pushed backward by significant winds
into the drainage ditch. The warbird support crew was fantastic with their
assistance getting it out of the ditch. We used plywood and a high reach forklift
and walked it right out. It took a couple of hours Friday morning but those
CJ 6 planes are tough birds. Larry Kelly and his b25 gang was helpful too
with tow bars etc. The outpouring of help was unmatched!
Mort flew it home without incident. In checking the tail section for fod after
the event we found one dirty sock in the tail section. So much for the previous
fod check? Besides who fly with just one shoe on?
Tim Stevens
Sent from my iPad
On Apr 28, 2011, at 3:48 PM, Cpayne <cpayne@joimail.com> wrote:
>
> I read that a CJ was damaged by the tornado at SNF. Who's was it? The warbird
line guys did a great job and looked out for all the 'birds, tying those down
that were left loose. Mine received only superficial damage from the hanger door
pushing in off it's track.
>
> Craig Payne
>
>
>
>
Message 6
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Russian MT three blade prop. Factory SCUBA air hose. Full set of engine
tools for 52. TW factory tail tow bar.
Please contact off list.
(386)304-6808
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