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Using First Class Seats In Your Home, Power?  
User currently offline747hogg From , joined Dec 1969, posts, RR:
Posted (8 years 1 month 1 week 2 days 12 hours ago) and read 5430 times:

Just bought a pair of UAL 747-400 First Seats (older version) from ebay. Now I'm told all the power features will never work without the intervention of some elictronic geeks and some very special transformers. Anyone able to offer any advice? I understand the power coming from an aircraft in no way resembles that of a home. Any help would be apprecaited. The seats are Webber, and the selling Co. is Interface Avation of Hollister CA. (totally unwilling to offer any help)

19 replies: All unread, jump to last
 
User currently offlineTinkerBelle From , joined Dec 1969, posts, RR:
Reply 1, posted (8 years 1 month 1 week 2 days 12 hours ago) and read 5426 times:

LOL... Sorry I can offer any help but it'd be kick-ass to have some 747 first class seats as a lazyboy in 'tv room'. Great way to watch the game on Sundays with 'the boys' coz the old lady would never appreciate them...lol

User currently offlineDelta4eva From United States of America, joined Jan 2005, 344 posts, RR: 0
Reply 2, posted (8 years 1 month 1 week 2 days 12 hours ago) and read 5405 times:

Quoting TinkerBelle (Reply 1):
Sorry I can offer any help but it'd be kick-ass to have some 747 first class seats as a lazyboy in 'tv room'.

They won't make good lazyboys without power to recline the seats. Otherwise you are sitting in landing position the whole time, and we all know how uncomfortable that can be.



FLY DELTA JETS
User currently offlineAndz From South Africa, joined Feb 2004, 8453 posts, RR: 10
Reply 3, posted (8 years 1 month 1 week 2 days 12 hours ago) and read 5390 times:
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Aircraft power is 400Hz isn't it? You need a VERY fast hamster in a wheel!


After Monday and Tuesday even the calendar says WTF...
User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9643 posts, RR: 52
Reply 4, posted (8 years 1 month 1 week 2 days 12 hours ago) and read 5358 times:

Quoting Andz (Reply 3):
Aircraft power is 400Hz isn't it? You need a VERY fast hamster in a wheel!

It really depends. Some systems run on AC and some run on DC. There are power conversions in different places, but yes the general norm is 400Hz since it allows for lighter, smaller and faster motors. Aircraft systems have grown from their 115Vac at 400hz roots to systems operating at 115Vac and 230Vac at frequencies ranging from 360 to 800hz.



If you have never designed an airplane part before, let the real designers do the work!
User currently offlineAndz From South Africa, joined Feb 2004, 8453 posts, RR: 10
Reply 5, posted (8 years 1 month 1 week 2 days 11 hours ago) and read 5264 times:
Support Airliners.net - become a First Class Member!

I had a look on ebay myself and found "real 1st class airline seats from a Bowing 747!"

current bid $41 LOL

http://cgi.ebay.com/First-Class-Airl...QQcategoryZ806QQrdZ1QQcmdZViewItem



After Monday and Tuesday even the calendar says WTF...
User currently offlineDelta732FF From United States of America, joined May 2005, 228 posts, RR: 0
Reply 6, posted (8 years 1 month 1 week 2 days 11 hours ago) and read 5224 times:

I have seen some on ebay the the seller actually had them plug into the wall. He is located in Atlanta if that helps. This seller has all kind of seats on ebay, so if you see anyone form Georgia on ebay selling them its most likely him. He might be able to help.

User currently offlineSP90 From United States of America, joined May 2006, 388 posts, RR: 0
Reply 7, posted (8 years 1 month 1 week 2 days 11 hours ago) and read 5187 times:

Can you swap out the motors for something a little more conventional? That way you don't need the transformers and all. I'm sure you could find sufficiently powerful DC motors in hobby stores that cater to this area.

User currently offlineTurpentyine From United States of America, joined Mar 2006, 154 posts, RR: 0
Reply 8, posted (8 years 1 month 1 week 2 days 6 hours ago) and read 5018 times:

screw first class seats.
why dont you buy the 747 captain seats instead


User currently offlineBill142 From Australia, joined Aug 2004, 8451 posts, RR: 8
Reply 9, posted (8 years 1 month 1 week 2 days 6 hours ago) and read 5018 times:

The real challenege would be to get the PTV's to work with your current home system.

User currently offlineSP90 From United States of America, joined May 2006, 388 posts, RR: 0
Reply 10, posted (8 years 1 month 1 week 1 day 14 hours ago) and read 4762 times:

Quoting Bill142 (Reply 9):
The real challenge would be to get the PTV's to work with your current home system.

That is an interesting challenge. First question is how exactly does the PTV systems work on planes? Are the contents stored on a central server on the plane or received real time via satellite connection? I recall seeing on Seatguru that A330s from LX and CX has something called a equipment box under the window seats and some aisle seats in economy. What exactly is that for? Is it just a power distribution node for the 2 PTV in that row of seats or something more?


User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9643 posts, RR: 52
Reply 11, posted (8 years 1 month 1 week 1 day 13 hours ago) and read 4629 times:

Quoting SP90 (Reply 10):
First question is how exactly does the PTV systems work on planes? Are the contents stored on a central server on the plane or received real time via satellite connection?

There are three ways that PTVs work and all ways are in use and vary in technology. The first PTVs were powered by cassette players found in a galley. There are usually 8-16 cassette players and they play the movies on the channel system that is wired to each of the seats.

The second and more advanced IFE systems are AVOD systems. They have a computer hard drive that stores all the video programming, and the individual PTV computers play the movies upon the passengers request. These are more advanced, but are also more prone to failure and can be slow.

The third type is satellite tv/radio. This was pioneered by jetBlue where they use existing satellite television and have a reciever on the plane. It works like normal cable for the most part.

As for IFE of the seats that the original poster is referring to, if there are PTVs, they most likely would be of the cassette type since AVOD and satellite tv have only been around for a few years and those seats aren't being replaced.



If you have never designed an airplane part before, let the real designers do the work!
User currently offlineSP90 From United States of America, joined May 2006, 388 posts, RR: 0
Reply 12, posted (8 years 1 month 1 week 1 day 12 hours ago) and read 4580 times:

Quoting RoseFlyer (Reply 11):

Thanks for sharing that.

So the first generation PTV were like the CCTV systems on motor coaches. Each VCR/DVD player in the galley would be = 1 channel right?

It sounds like the second type had local disk storage at every seat. Is this true? The computer hard drive is probably weakest link in this type of system. All the bumps and vibrations during flight can't be good for the drives.

As for the IFE on the original poster's seats, do they even have IFE built it?  Big grin
Maybe you could hookup a DVD player to each with RCA cables?


User currently offlineNewyork355 From France, joined Jul 2004, 148 posts, RR: 0
Reply 13, posted (8 years 1 month 1 week 1 day 12 hours ago) and read 4542 times:

Here's my question. So, on ebay, there really aren't all that many seats to choose from. It seems like there should be a lot more. For instance, seats from UA 767-200s, AA MD-11s, etc. I realize that many of these seats remain when these airplanes change hands, but at the same time, one would assume that there would be more seats for sale. Where are they? (I would LOVE one myself!)

Sam



"No Way BA/AA"
User currently offlineDeltaDC9 From United States of America, joined Apr 2006, 2844 posts, RR: 4
Reply 14, posted (8 years 1 month 1 week 1 day 9 hours ago) and read 4431 times:

I thought planes were standardised to 28 volts for most stuff. If not, do they have different voltages for different things? I know the lights tend to be 28 volts so I assumed a lot of things were.


Dont take life too seriously because you will never get out of it alive - Bugs Bunny
User currently offlineSilverfox From United Kingdom, joined Mar 2001, 1058 posts, RR: 0
Reply 15, posted (8 years 1 month 1 week 1 day 7 hours ago) and read 4346 times:

Are you going to place them in line astern so you can watch the IFE?

User currently offline747hogg From , joined Dec 1969, posts, RR:
Reply 16, posted (8 years 1 month 1 week 13 hours ago) and read 4152 times:

You can forget getting good seats most of the time. Interface Avation has the finest used seats in all three classes, but sells only in bulk for re ferb jobs and cargo seats for crew, most seats are just crushed with the rest of the plane because the salvage people don't have the time to nickel and dime every last drop of $$$ left in the hull, and unless the seats are really in good shape, they are no longer air worthy anyway, and make the dumpster. Some times you can find a deal on ebay where some dealer bought the seats out of a hull, and is selling row by row. Lufstansa was selling business class seats last year at $8000 euros plus shipping!

User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9643 posts, RR: 52
Reply 17, posted (8 years 1 month 1 week 12 hours ago) and read 4106 times:

Quoting SP90 (Reply 12):
So the first generation PTV were like the CCTV systems on motor coaches. Each VCR/DVD player in the galley would be = 1 channel right?

That sounds right. There still is a control box at each seat though for the phone, audio and video systems that is usually under the seat.

Quoting SP90 (Reply 12):
It sounds like the second type had local disk storage at every seat. Is this true? The computer hard drive is probably weakest link in this type of system. All the bumps and vibrations during flight can't be good for the drives.

It depends on the system. From what I know (and keep in mind I don't work for Rockwell or Honeywell), usually it is a central computer with all the programming, and there are individual computers at each of the seats that download the programming and play it. I'm not that much of an expert since I work on power generation systems for airplanes.



If you have never designed an airplane part before, let the real designers do the work!
User currently offlineRichierich From United States of America, joined Nov 2000, 4263 posts, RR: 6
Reply 18, posted (8 years 1 month 1 week 10 hours ago) and read 4035 times:

I'd think it is possible to buy a transformer for the seats, but I don't know if it is something readily available at your local Radio Shack. It may require a search of the internet and it may be an expensive item (if available at all). First thing to do is to figure out what sort of power it used - I realize that this maybe easier said than done but that is the only way you are going to get this to work! You certainly wouldn't want to burn your house down by jimmying the wrong voltage through these seats!

As for the PTV, I'd say forget it unless you can figure out a way to hook up your DVD player to the back of it.



None shall pass!!!!
User currently offlineSP90 From United States of America, joined May 2006, 388 posts, RR: 0
Reply 19, posted (8 years 1 month 4 days 16 hours ago) and read 3879 times:

Quoting RoseFlyer (Reply 17):
It depends on the system. From what I know (and keep in mind I don't work for Rockwell or Honeywell), usually it is a central computer with all the programming, and there are individual computers at each of the seats that download the programming and play it. I'm not that much of an expert since I work on power generation systems for airplanes.

I see. There is probably no single central computer but more like a small cluster of servers located together somewhere on the plane with all the content. The content should be streaming and not downloaded since that will take even more time. The seat computer will probably have some solid state memory (ROM and RAM) to run the basic operating system and buffer the video/audio stream.

I don't work for Honeywell or Rockwell either, but I do work in telecom so this sorta stuff is interesting for me. For an aircraft with 250-350 passengers, each with a terminal, you need some serious computing horsepower to keep everyone happy. Since a lot of the content will be video its going to be bandwidth intensive. I'm thinking IBM Bladecenter with an external SAN array and maybe even a fiber optic network to distribute to every seat? Anyone work for Boeing or some 3rd party vendor who could shed some light on this?


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