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draftsjust417(at)gmail.co
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 Posted: Thu Sep 30, 2021 8:23 am Post subject: Soviet Art Horizon for sale... |
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For sale:
a Soviet artificial horizon I picked up used years ago, but never plugged it in. No need for me to keep it. Stored in a sealed bag.
Think I gave $150 for it, asking same + shipping to you.
Selling as-is, I've never seen it work but no reason to believe it doesn't. Anyone need it?
Justin Drafts
N280NC
Seattle
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dsavarese0812(at)bellsout
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| Posted: Thu Sep 30, 2021 10:58 am Post subject: Soviet Art Horizon for sale... |
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Russian AI’s operate on 36 bolts AC, 400 Hz and require an inverter to power them. They are designed for aerobatics and therefore can and do tumble during aerobatics. They have no caging capability during aerobatics.Dennis
Sent from my iPhone
| Quote: | On Sep 30, 2021, at 2:17 PM, Emmanuel Brion <e_brion(at)hotmail.com> wrote:
 Hello.
I might be interested would it is ok for to ship it to France ? And do you know if it can be lock for aorebatics
Best Regards
Emmanuel Brion
De : owner-yak-list-server(at)matronics.com <owner-yak-list-server(at)matronics.com> de la part de Justin Drafts <draftsjust417(at)gmail.com>
Envoyé : jeudi 30 septembre 2021 13:46
À : yak-list(at)matronics.com <yak-list(at)matronics.com>
Objet : Re: Soviet Art Horizon for sale...
For sale:
a Soviet artificial horizon I picked up used years ago, but never plugged it in. No need for me to keep it. Stored in a sealed bag.
Think I gave $150 for it, asking same + shipping to you.
Selling as-is, I've never seen it work but no reason to believe it doesn't. Anyone need it?
Justin Drafts
N280NC
Seattle
|
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draftsjust417(at)gmail.co
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| Posted: Thu Sep 30, 2021 5:50 pm Post subject: Soviet Art Horizon for sale... |
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Good info, thanks Dennis-J
On Thu, Sep 30, 2021, 12:04 PM Anthony Savarese <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:
| Quote: | Russian AI’s operate on 36 bolts AC, 400 Hz and require an inverter to power them. They are designed for aerobatics and therefore can and do tumble during aerobatics. They have no caging capability during aerobatics.Dennis
Sent from my iPhone
|
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dsavarese0812(at)bellsout
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| Posted: Fri Oct 01, 2021 1:56 am Post subject: Soviet Art Horizon for sale... |
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Should have said VOLTS, not Bolts. Sorry about the typo.
A. Dennis Savarese
334-546-8182
www.yak-52.com
On 9/30/2021 9:49 PM, Justin Drafts wrote:
| Quote: | Good info, thanks Dennis-
J
On Thu, Sep 30, 2021, 12:04 PM Anthony Savarese
<dsavarese0812(at)bellsouth.net <mailto:dsavarese0812(at)bellsouth.net>> wrote:
Russian AI’s operate on 36 bolts AC, 400 Hz and require an
inverter to power them. They are designed for aerobatics and
therefore can and do tumble during aerobatics. They have no
caging capability during aerobatics.
Dennis
Sent from my iPhone
> On Sep 30, 2021, at 2:17 PM, Emmanuel Brion <e_brion(at)hotmail.com
> <mailto:e_brion(at)hotmail.com>> wrote:
>
> 
> Hello.
>
> I might be interested would it is ok for to ship it to France ?
> And do you know if it can be lock for aorebatics
>
> Best Regards
> Emmanuel Brion
> ------------------------------------------------------------------------
> *De :* owner-yak-list-server(at)matronics.com
> <mailto:owner-yak-list-server(at)matronics.com>
> <owner-yak-list-server(at)matronics.com
> <mailto:owner-yak-list-server(at)matronics.com>> de la part de
> Justin Drafts <draftsjust417(at)gmail.com
> <mailto:draftsjust417(at)gmail.com>>
> *Envoyé :* jeudi 30 septembre 2021 13:46
> *À :* yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>
> <yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>>
> *Objet :* Re: Soviet Art Horizon for sale...
> For sale:
> a Soviet artificial horizon I picked up used years ago, but never
> plugged it in. No need for me to keep it. Stored in a sealed bag.
> Think I gave $150 for it, asking same + shipping to you.
> Selling as-is, I've never seen it work but no reason to believe
> it doesn't. Anyone need it?
> Justin Drafts
> N280NC
> Seattle
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Saj
Joined: 30 Mar 2019
Posts: 6
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| Posted: Fri Oct 01, 2021 2:49 am Post subject: Soviet Art Horizon for sale... |
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Dennis, why did they choose 36 volts AC, 400Hz? It is such a heavy and complex method, although does seem to work well.
Steve
Sent from my iPad
| Quote: | On Oct 1, 2021, at 5:59 AM, A. Dennis Savarese <dsavarese0812(at)bellsouth.net> wrote:

Should have said VOLTS, not Bolts. Sorry about the typo.
A. Dennis Savarese
334-546-8182
www.yak-52.com
> On 9/30/2021 9:49 PM, Justin Drafts wrote:
> Good info, thanks Dennis-
> J
>
> On Thu, Sep 30, 2021, 12:04 PM Anthony Savarese <dsavarese0812(at)bellsouth.net <mailto:dsavarese0812(at)bellsouth.net>> wrote:
>
> Russian AI’s operate on 36 bolts AC, 400 Hz and require an
> inverter to power them. They are designed for aerobatics and
> therefore can and do tumble during aerobatics. They have no
> caging capability during aerobatics.
> Dennis
>
> Sent from my iPhone
>
>> On Sep 30, 2021, at 2:17 PM, Emmanuel Brion <e_brion(at)hotmail.com
>> <mailto:e_brion(at)hotmail.com>> wrote:
>>
>> 
>> Hello.
>>
>> I might be interested would it is ok for to ship it to France ?
>> And do you know if it can be lock for aorebatics
>>
>> Best Regards
>> Emmanuel Brion
>> ------------------------------------------------------------------------
>> *De :* owner-yak-list-server(at)matronics.com
>> <mailto:owner-yak-list-server(at)matronics.com>
>> <owner-yak-list-server(at)matronics.com
>> <mailto:owner-yak-list-server(at)matronics.com>> de la part de
>> Justin Drafts <draftsjust417(at)gmail.com
>> <mailto:draftsjust417(at)gmail.com>>
>> *Envoyé :* jeudi 30 septembre 2021 13:46
>> *À :* yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>
>> <yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>>
>> *Objet :* Re: Soviet Art Horizon for sale...
>> For sale:
>> a Soviet artificial horizon I picked up used years ago, but never
>> plugged it in. No need for me to keep it. Stored in a sealed bag.
>> Think I gave $150 for it, asking same + shipping to you.
>> Selling as-is, I've never seen it work but no reason to believe
>> it doesn't. Anyone need it?
>> Justin Drafts
>> N280NC
>> Seattle
>
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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dsavarese0812(at)bellsout
Guest
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| Posted: Fri Oct 01, 2021 4:31 am Post subject: Soviet Art Horizon for sale... |
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I can only guess. Many military aircraft in the past have equipment that operate on AC, 400 hz. Probably for reliability and longevity. Remember who designed the 52. Yakovlev was primarily a military aircraft designer. Also remember where the 52 was originally used. Thus the ruggedness and durability.
That’s my best guess.
Dennis
Sent from my iPhone
| Quote: | On Oct 1, 2021, at 6:51 AM, Steven Johnson <sajdds(at)comcast.net> wrote:

Dennis, why did they choose 36 volts AC, 400Hz? It is such a heavy and complex method, although does seem to work well.
Steve
Sent from my iPad
> On Oct 1, 2021, at 5:59 AM, A. Dennis Savarese <dsavarese0812(at)bellsouth.net> wrote:
>
> 
>
> Should have said VOLTS, not Bolts. Sorry about the typo.
>
> A. Dennis Savarese
> 334-546-8182
> www.yak-52.com
>
>>> On 9/30/2021 9:49 PM, Justin Drafts wrote:
>> Good info, thanks Dennis-
>> J
>>
>>> On Thu, Sep 30, 2021, 12:04 PM Anthony Savarese <dsavarese0812(at)bellsouth.net <mailto:dsavarese0812(at)bellsouth.net>> wrote:
>>
>> Russian AI’s operate on 36 bolts AC, 400 Hz and require an
>> inverter to power them. They are designed for aerobatics and
>> therefore can and do tumble during aerobatics. They have no
>> caging capability during aerobatics.
>> Dennis
>>
>> Sent from my iPhone
>>
>>> On Sep 30, 2021, at 2:17 PM, Emmanuel Brion <e_brion(at)hotmail.com
>>> <mailto:e_brion(at)hotmail.com>> wrote:
>>>
>>> 
>>> Hello.
>>>
>>> I might be interested would it is ok for to ship it to France ?
>>> And do you know if it can be lock for aorebatics
>>>
>>> Best Regards
>>> Emmanuel Brion
>>> ------------------------------------------------------------------------
>>> *De :* owner-yak-list-server(at)matronics.com
>>> <mailto:owner-yak-list-server(at)matronics.com>
>>> <owner-yak-list-server(at)matronics.com
>>> <mailto:owner-yak-list-server(at)matronics.com>> de la part de
>>> Justin Drafts <draftsjust417(at)gmail.com
>>> <mailto:draftsjust417(at)gmail.com>>
>>> *Envoyé :* jeudi 30 septembre 2021 13:46
>>> *À :* yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>
>>> <yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>>
>>> *Objet :* Re: Soviet Art Horizon for sale...
>>> For sale:
>>> a Soviet artificial horizon I picked up used years ago, but never
>>> plugged it in. No need for me to keep it. Stored in a sealed bag.
>>> Think I gave $150 for it, asking same + shipping to you.
>>> Selling as-is, I've never seen it work but no reason to believe
>>> it doesn't. Anyone need it?
>>> Justin Drafts
>>> N280NC
>>> Seattle
>>
>
>
>
>
>
>
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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markbitterlich(at)embarqm
Guest
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| Posted: Fri Oct 01, 2021 7:45 am Post subject: Soviet Art Horizon for sale... |
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Most military and commercial aircraft use 115 VAC 3 phase at 400 Hz for weight saving purposes, which makes no sense at all until you learn that the amount of iron you need (mass) in a transformer core gets smaller in size as the frequency of the voltage increases. The same is true in any magnetic Flux field device such as a motor. This fact is also the basic principle and reason for switching power supplies versus linear power supplies.
Mark
-------- Original message --------
From: Anthony Savarese <dsavarese0812(at)bellsouth.net>
Date: 10/1/21 8:56 AM (GMT-05:00)
To: yak-list(at)matronics.com
Subject: Re: Yak-List: Re: Soviet Art Horizon for sale...
--> Yak-List message posted by: Anthony Savarese <dsavarese0812(at)bellsouth.net>
I can only guess. Many military aircraft in the past have equipment that operate on AC, 400 hz. Probably for reliability and longevity. Remember who designed the 52. Yakovlev was primarily a military aircraft designer. Also remember where the 52 was originally used. Thus the ruggedness and durability.
That’s my best guess.
Dennis
Sent from my iPhone
| Quote: | On Oct 1, 2021, at 6:51 AM, Steven Johnson <sajdds(at)comcast.net> wrote:
--> Yak-List message posted by: Steven Johnson <sajdds(at)comcast.net>
Dennis, why did they choose 36 volts AC, 400Hz? It is such a heavy and complex method, although does seem to work well.
Steve
Sent from my iPad
> On Oct 1, 2021, at 5:59 AM, A. Dennis Savarese <dsavarese0812(at)bellsouth.net> wrote:
>
> --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net>
>
> Should have said VOLTS, not Bolts. Sorry about the typo.
>
> A. Dennis Savarese
> 334-546-8182
> www.yak-52.com
>
>>> On 9/30/2021 9:49 PM, Justin Drafts wrote:
>> Good info, thanks Dennis-
>> J
>>
>>> On Thu, Sep 30, 2021, 12:04 PM Anthony Savarese <dsavarese0812(at)bellsouth.net <mailto:dsavarese0812(at)bellsouth.net>> wrote:
>>
>> Russian AI’s operate on 36 bolts AC, 400 Hz and require an
>> inverter to power them. They are designed for aerobatics and
>> therefore can and do tumble during aerobatics. They have no
>> caging capability during aerobatics.
>> Dennis
>>
>> Sent from my iPhone
>>
>>> On Sep 30, 2021, at 2:17 PM, Emmanuel Brion <e_brion(at)hotmail.com
>>> <mailto:e_brion(at)hotmail.com>> wrote:
>>>
>>> 
>>> Hello.
>>>
>>> I might be interested would it is ok for to ship it to France ?
>>> And do you know if it can be lock for aorebatics
>>>
>>> Best Regards
>>> Emmanuel Brion
>>> ------------------------------------------------------------------------
>>> *De :* owner-yak-list-server(at)matronics.com
>>> <mailto:owner-yak-list-server(at)matronics.com>
>>> <owner-yak-list-server(at)matronics.com
>>> <mailto:owner-yak-list-server(at)matronics.com>> de la part de
>>> Justin Drafts <draftsjust417(at)gmail.com
>>> <mailto:draftsjust417(at)gmail.com>>
>>> *Envoyé :* jeudi 30 septembre 2021 13:46
>>> *À :* yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>
>>> <yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>>
>>> *Objet :* Yak-List: Re: Soviet Art Horizon for sale...
>>> For sale:
>>> a Soviet artificial horizon I picked up used years ago, but never
>>> plugged it in. No need for me to keep it. Stored in a sealed bag.
>>> Think I gave $150 for it, asking same + shipping to you.
>>> Selling as-is, I've never seen it work but no reason to believe
>>> it doesn't. Anyone need it?
>>> Justin Drafts
>>> N280NC
>>> Seattle
>>
>
>
>
>
>
>
|
_-============================================================
_-= - The Yak-List Email Forum -
_-= Use the Matronics List Features Navigator to browse
_-= the many List utilities such as List Un/Subscription,
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_-= Same great content also available via the Web Forums!
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_-= Add some info to the Matronics Email List Wiki!
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_-= --> http://www.matronics.com/contribution
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| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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markbitterlich(at)embarqm
Guest
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| Posted: Fri Oct 01, 2021 7:58 am Post subject: Soviet Art Horizon for sale... |
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And I never answered the direct question asked! My bad, sorry.
The Russions were very big on designing one general purpose device and then using it anywhere and everywhere else they could, instead of designing all new "devices" for any new aircraft. Hence the generator being rated at 100 amps (at) 28 VDC (with forced cooling air flow) on a Yak 52 or Sukhoi 26, 29, 31 that needed only about 1/3 of that worst case!
Attitude Gyro same thing. It was used on many other aircraft, including for a large part those that were running 3 phase 115 volt primary power, I.E. as Dennis mentioned "military aircraft" Thus they put the same old gyro in Yaks, but then had to create AC energy with the inverter, which in most cases was actually just a motor driven AC generator.
-------- Original message --------
From: Mark Bitterlich <markbitterlich(at)embarqmail.com>
Date: 10/1/21 11:45 AM (GMT-05:00)
To: yak-list(at)matronics.com
Cc: markbitterlich(at)embarqmail.com
Subject: Re: Yak-List: Re: Soviet Art Horizon for sale...
Most military and commercial aircraft use 115 VAC 3 phase at 400 Hz for weight saving purposes, which makes no sense at all until you learn that the amount of iron you need (mass) in a transformer core gets smaller in size as the frequency of the voltage increases. The same is true in any magnetic Flux field device such as a motor. This fact is also the basic principle and reason for switching power supplies versus linear power supplies.
Mark
-------- Original message --------
From: Anthony Savarese <dsavarese0812(at)bellsouth.net>
Date: 10/1/21 8:56 AM (GMT-05:00)
To: yak-list(at)matronics.com
Subject: Re: Yak-List: Re: Soviet Art Horizon for sale...
--> Yak-List message posted by: Anthony Savarese <dsavarese0812(at)bellsouth.net>
I can only guess. Many military aircraft in the past have equipment that operate on AC, 400 hz. Probably for reliability and longevity. Remember who designed the 52. Yakovlev was primarily a military aircraft designer. Also remember where the 52 was originally used. Thus the ruggedness and durability.
That’s my best guess.
Dennis
Sent from my iPhone
| Quote: | On Oct 1, 2021, at 6:51 AM, Steven Johnson <sajdds(at)comcast.net> wrote:
--> Yak-List message posted by: Steven Johnson <sajdds(at)comcast.net>
Dennis, why did they choose 36 volts AC, 400Hz? It is such a heavy and complex method, although does seem to work well.
Steve
Sent from my iPad
> On Oct 1, 2021, at 5:59 AM, A. Dennis Savarese <dsavarese0812(at)bellsouth.net> wrote:
>
> --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net>
>
> Should have said VOLTS, not Bolts. Sorry about the typo.
>
> A. Dennis Savarese
> 334-546-8182
> www.yak-52.com
>
>>> On 9/30/2021 9:49 PM, Justin Drafts wrote:
>> Good info, thanks Dennis-
>> J
>>
>>> On Thu, Sep 30, 2021, 12:04 PM Anthony Savarese <dsavarese0812(at)bellsouth.net <mailto:dsavarese0812(at)bellsouth.net>> wrote:
>>
>> Russian AI’s operate on 36 bolts AC, 400 Hz and require an
>> inverter to power them. They are designed for aerobatics and
>> therefore can and do tumble during aerobatics. They have no
>> caging capability during aerobatics.
>> Dennis
>>
>> Sent from my iPhone
>>
>>> On Sep 30, 2021, at 2:17 PM, Emmanuel Brion <e_brion(at)hotmail.com
>>> <mailto:e_brion(at)hotmail.com>> wrote:
>>>
>>> 
>>> Hello.
>>>
>>> I might be interested would it is ok for to ship it to France ?
>>> And do you know if it can be lock for aorebatics
>>>
>>> Best Regards
>>> Emmanuel Brion
>>> ------------------------------------------------------------------------
>>> *De :* owner-yak-list-server(at)matronics.com
>>> <mailto:owner-yak-list-server(at)matronics.com>
>>> <owner-yak-list-server(at)matronics.com
>>> <mailto:owner-yak-list-server(at)matronics.com>> de la part de
>>> Justin Drafts <draftsjust417(at)gmail.com
>>> <mailto:draftsjust417(at)gmail.com>>
>>> *Envoyé :* jeudi 30 septembre 2021 13:46
>>> *À :* yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>
>>> <yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>>
>>> *Objet :* Yak-List: Re: Soviet Art Horizon for sale...
>>> For sale:
>>> a Soviet artificial horizon I picked up used years ago, but never
>>> plugged it in. No need for me to keep it. Stored in a sealed bag.
>>> Think I gave $150 for it, asking same + shipping to you.
>>> Selling as-is, I've never seen it work but no reason to believe
>>> it doesn't. Anyone need it?
>>> Justin Drafts
>>> N280NC
>>> Seattle
>>
>
>
>
>
>
>
|
_-============================================================
_-= - The Yak-List Email Forum -
_-= Use the Matronics List Features Navigator to browse
_-= the many List utilities such as List Un/Subscription,
_-= Archive Search & Download, 7-Day Browse, Chat, FAQ,
_-= Photoshare, and much much more:
_-=
_-= --> http://www.matronics.com/Navigator?Yak-List
_-=
_-============================================================
_-= - MATRONICS WEB FORUMS -
_-= Same great content also available via the Web Forums!
_-=
_-= --> http://forums.matronics.com
_-=
_-============================================================
_-= - NEW MATRONICS LIST WIKI -
_-= Add some info to the Matronics Email List Wiki!
_-= --> http://wiki.matronics.com
_-============================================================
_-= - List Contribution Web Site -
_-= Thank you for your generous support!
_-= -Matt Dralle, List Admin.
_-= --> http://www.matronics.com/contribution
_-============================================================
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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hess737(at)aol.com
Guest
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| Posted: Sun Oct 10, 2021 10:55 pm Post subject: Soviet Art Horizon for sale... |
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Even their Jets use 36v. The L-39 has two 3 X 36V inverters
Richard HessC 404-964-4885
| Quote: | On Oct 5, 2021, at 12:58 AM, Anthony Savarese <dsavarese0812(at)bellsouth.net> wrote:
Russian AI’s operate on 36 bolts AC, 400 Hz and require an inverter to power them. They are designed for aerobatics and therefore can and do tumble during aerobatics. They have no caging capability during aerobatics.Dennis
Sent from my iPhone
| Quote: | On Sep 30, 2021, at 2:17 PM, Emmanuel Brion <e_brion(at)hotmail.com> wrote:
 Hello.
I might be interested would it is ok for to ship it to France ? And do you know if it can be lock for aorebatics
Best Regards
Emmanuel Brion
De : owner-yak-list-server(at)matronics.com <owner-yak-list-server(at)matronics.com> de la part de Justin Drafts <draftsjust417(at)gmail.com>
Envoyé : jeudi 30 septembre 2021 13:46
À : yak-list(at)matronics.com <yak-list(at)matronics.com>
Objet : Re: Soviet Art Horizon for sale...
For sale:
a Soviet artificial horizon I picked up used years ago, but never plugged it in. No need for me to keep it. Stored in a sealed bag.
Think I gave $150 for it, asking same + shipping to you.
Selling as-is, I've never seen it work but no reason to believe it doesn't. Anyone need it?
Justin Drafts
N280NC
Seattle
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