Today's Message Index:
----------------------
1. 08:48 AM - Gill Shutter Binding (Ernest Martinez)
2. 10:02 AM - Re: Gill Shutter Binding (doug sapp)
3. 10:09 AM - Re: Gill Shutter Binding (Ernest Martinez)
4. 10:17 AM - Re: Gill Shutter Binding (doug sapp)
5. 02:45 PM - Fuel Tank Repairs (Rico Jaeger)
6. 03:13 PM - Re: Fuel Tank Repairs (A. Dennis Savarese)
7. 07:26 PM - Yak 55M M14P Air start bottle on fire wall (Royden Heays)
8. 09:24 PM - Re: Yak 55M M14P Air start bottle on fire wall (david stroud)
Message 1
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| Subject: | Gill Shutter Binding |
What can cause the gill shutter ring on a CJ to bind? Mine requires a lot
of effort to actuate. Before I start taking things apart I was hoping there
was an obvious answer. It's not the cable, I disconnected it at the
actuating arm, and I had to use channel locks to open and close the ring.
Thanks
Ernie
Message 2
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| Subject: | Re: Gill Shutter Binding |
Ernie,
On the bottom of each gill/vane there is a small steel 90 degree "arm" the
correct name is a wobbler. The wobbler should have a smooth slot in it.
If the wobblers have been vibrating on the hardware they will have
developed a notch in the slot. The gills are most likely hanging up in
this notch. Another problem may be that the center ring holes are all
wallowed out, this will also cause the gills to bind up.
Check book #2 of the IPBs for the dwg/breakdown of the shutter system.
I carry all the various shutter parts in stock.
Hope this helps.
Doug
On Fri, Aug 15, 2014 at 8:46 AM, Ernest Martinez <erniel29@gmail.com> wrote:
> What can cause the gill shutter ring on a CJ to bind? Mine requires a lot
> of effort to actuate. Before I start taking things apart I was hoping there
> was an obvious answer. It's not the cable, I disconnected it at the
> actuating arm, and I had to use channel locks to open and close the ring.
>
> Thanks
>
> Ernie
>
> *
>
>
> *
>
>
Message 3
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| Subject: | Re: Gill Shutter Binding |
Thanks Doug,
Each wobbler seems to be held in place with a small slotted screw which is
safety wired to its neighbor. Can they be over tightened?
Ernie
On Fri, Aug 15, 2014 at 1:01 PM, doug sapp <dougsappllc@gmail.com> wrote:
> Ernie,
> On the bottom of each gill/vane there is a small steel 90 degree "arm"
> the correct name is a wobbler. The wobbler should have a smooth slot in
> it. If the wobblers have been vibrating on the hardware they will have
> developed a notch in the slot. The gills are most likely hanging up in
> this notch. Another problem may be that the center ring holes are all
> wallowed out, this will also cause the gills to bind up.
>
> Check book #2 of the IPBs for the dwg/breakdown of the shutter system.
>
> I carry all the various shutter parts in stock.
>
> Hope this helps.
> Doug
>
>
> On Fri, Aug 15, 2014 at 8:46 AM, Ernest Martinez <erniel29@gmail.com>
> wrote:
>
>> What can cause the gill shutter ring on a CJ to bind? Mine requires a lot
>> of effort to actuate. Before I start taking things apart I was hoping there
>> was an obvious answer. It's not the cable, I disconnected it at the
>> actuating arm, and I had to use channel locks to open and close the ring.
>>
>> Thanks
>>
>> Ernie
>>
>> *
>>
>> et="_blank">http://www.matronics.com/Navigator?Yak-List <http://www.matronics.com/Navigator?Yak-List>
>> tp://forums.matronics.com <http://forums.matronics.com>
>> _blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
>>
>> *
>>
>>
> *
>
>
> *
>
>
Message 4
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| Subject: | Re: Gill Shutter Binding |
No, it would be pretty hard to over tighten them, no need to go more than
snug as they are safety wired. Depending on how old they are they may be
worn and binding also.
On Fri, Aug 15, 2014 at 10:09 AM, Ernest Martinez <erniel29@gmail.com>
wrote:
> Thanks Doug,
>
> Each wobbler seems to be held in place with a small slotted screw which is
> safety wired to its neighbor. Can they be over tightened?
>
> Ernie
>
>
> On Fri, Aug 15, 2014 at 1:01 PM, doug sapp <dougsappllc@gmail.com> wrote:
>
>> Ernie,
>> On the bottom of each gill/vane there is a small steel 90 degree "arm"
>> the correct name is a wobbler. The wobbler should have a smooth slot in
>> it. If the wobblers have been vibrating on the hardware they will have
>> developed a notch in the slot. The gills are most likely hanging up in
>> this notch. Another problem may be that the center ring holes are all
>> wallowed out, this will also cause the gills to bind up.
>>
>> Check book #2 of the IPBs for the dwg/breakdown of the shutter system.
>>
>> I carry all the various shutter parts in stock.
>>
>> Hope this helps.
>> Doug
>>
>>
>> On Fri, Aug 15, 2014 at 8:46 AM, Ernest Martinez <erniel29@gmail.com>
>> wrote:
>>
>>> What can cause the gill shutter ring on a CJ to bind? Mine requires a
>>> lot of effort to actuate. Before I start taking things apart I was hoping
>>> there was an obvious answer. It's not the cable, I disconnected it at the
>>> actuating arm, and I had to use channel locks to open and close the ring.
>>>
>>> Thanks
>>>
>>> Ernie
>>>
>>> *
>>>
>>> et="_blank">http://www.matronics.com/Navigator?Yak-List <http://www.matronics.com/Navigator?Yak-List>
>>> tp://forums.matronics.com <http://forums.matronics.com>
>>> _blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
>>>
>>> *
>>>
>>>
>> *
>>
>> et="_blank">http://www.matronics.com/Navigator?Yak-List <http://www.matronics.com/Navigator?Yak-List>
>> tp://forums.matronics.com <http://forums.matronics.com>
>> _blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
>>
>> *
>>
>>
> *
>
>
> *
>
>
Message 5
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| Subject: | Fuel Tank Repairs |
Hi All! I went up for a nice dusk flight Thursday PM. After doing a bit of
a zoom climb to a comfortable altitude for a local flight=2C I noticed an o
verwhelming aroma of raw fuel wafting into the cockpit. With no visible sig
n of leakage or pooling=2C prudence nevertheless dictated a return to home
base. Following a normal shutdown=2C I was rewarded with the wonderful sigh
t of no smoke / fire=2C but I jumped off the wing to find fuel streaming fr
om my right tank seams. Upon siphoning remaining gas and pulling the fuel t
ank access panel=2C I spotted a hairline fracture right on the stiffning be
ad of the tank - immediately aft of the breather. I took the tank to a few
local shops for repair and received a unanimous NO WAY - NOT TOUCHING IT! -
partially due to liabilities but mostly due to them being hypersensitive t
o instantaneous combustion. One guy offered the idea of using a sloshing co
mpound and said motorcycle shops typically carry a good one. I see Aircraft
Spruce has quite a few as well. But even then he said I'd need to thorough
ly "defume" the tank - which he described a exceedingly difficult to accomp
lish.
As w/ many aspects of the Yak=2C this is a new obstacle for me. Before I di
ve into reinventing the wheel=2C I believe in asking those in the know....
My questions are:
1) Are Yak fuel tanks a weak point of the aircraft? I can't recall this sub
ject coming up while I've been a "lurker" - but you know how things aren't
as interesting until they're happening to YOU=2C so I may've missed it.
2) Has anyone been down this road (fuel tank ruptures) and what have you fo
und that works / is safe / etc?
As always=2C I am eager to hear from the experts and ever so grateful for A
NY input on this topic - whether you've encountered it personally or simply
have a great idea!
Thank you=2C EVERYONE!
Rico Jaeger
915 S. 11th Ave.
Wausau=2C WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
Message 6
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| Subject: | Re: Fuel Tank Repairs |
Rico,
The Yak 52 fuel tanks have been known to crack. This is due to the
constant expansion and contraction due to heating and cooling of the
fuel. The existing vent system, unless your airplane is an '89 or
later model, contributes to the problem. Eventually, due to the
expansion and contraction, the metal cracks. Usually they crack either
along a weld seam or just under one of the straps. Mine actually
cracked directly below the filler cap, which was not on a seam or
strap. It was easy to repair with ProSeal because it was easy to get
to. ProSeal is an approved aircraft fuel tank repair material
available from Aircraft Spruce. Otherssell it as well. Your only real
alternative is to have it welded.
You have to find a welder who will weld fuel tanks. And you don't have
to tell him it is from an airplane. It's from your Czech-made farm
tractor or something.
Save your pennies and upgrade to the Yak 52 fuel bladders. They
eliminate this problem forever and you'll get another hour of useable
fuelmaking the airplane a true 2 1/2 hour endurance with 30 minutes
reserve. Contact me off-list if you're interested or go to my web site
for more info.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 8/15/2014 4:43 PM, Rico Jaeger wrote:
> Hi All! I went up for a nice dusk flight Thursday PM. After doing a
> bit of a zoom climb to a comfortable altitude for a local flight, I
> noticed an overwhelming aroma of raw fuel wafting into the cockpit.
> With no visible sign of leakage or pooling, prudence nevertheless
> dictated a return to home base. Following a normal shutdown, I was
> rewarded with the wonderful sight of no smoke / fire, but I jumped off
> the wing to find fuel streaming from my right tank seams. Upon
> siphoning remaining gas and pulling the fuel tank access panel, I
> spotted a hairline fracture right on the stiffning bead of the tank -
> immediately aft of the breather. I took the tank to a few local shops
> for repair and received a unanimous NO WAY - NOT TOUCHING IT! -
> partially due to liabilities but mostly due to them being
> hypersensitive to instantaneous combustion. One guy offered the idea
> of using a sloshing compound and said motorcycle shops typically carry
> a good one. I see Aircraft Spruce has quite a few as well. But even
> then he said I'd need to thoroughly "defume" the tank - which he
> described a exceedingly difficult to accomplish.
>
> As w/ many aspects of the Yak, this is a new obstacle for me. Before I
> dive into reinventing the wheel, I believe in asking those in the know....
>
> My questions are:
>
> 1) Are Yak fuel tanks a weak point of the aircraft? I can't recall
> this subject coming up while I've been a "lurker" - but you know how
> things aren't as interesting until they're happening to YOU, so I
> may've missed it.
>
> 2) Has anyone been down this road (fuel tank ruptures) and what have
> you found that works / is safe / etc?
>
> As always, I am eager to hear from the experts and ever so grateful
> for ANY input on this topic - whether you've encountered it personally
> or simply have a great idea!
>
> Thank you, EVERYONE!
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1966 Cessna 150F ^/---//-X
> N8558G //
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //
>
>
> *
>
>
> *
Message 7
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| Subject: | Yak 55M M14P Air start bottle on fire wall |
Anyone know where I can get a replacement air start bottle for the Yak 55M.
It's the small black bottle on the fire wall. Current installation is
showing signs of internal corrosion.
Royden Heays
Vancouver, BC Canada
Message 8
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| Subject: | Re: Yak 55M M14P Air start bottle on fire wall |
I have two with the mounts, Royden. Ottawa, Canada. Email me direct...
dwstroud@xplornet.com and we go over things. Leaving town Monday
afternoon
for the week. Thanks...
----- Original Message -----
From: Royden Heays
To: yak-list@matronics.com
Sent: Friday, August 15, 2014 10:25 PM
Subject: Yak-List: Yak 55M M14P Air start bottle on fire wall
Anyone know where I can get a replacement air start bottle for the Yak
55M. It's the small black bottle on the fire wall. Current installation
is showing signs of internal corrosion.
Royden Heays
Vancouver, BC Canada
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