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Painting While On Jacks?  
User currently offlineZANL188 From United States of America, joined Oct 2006, 3516 posts, RR: 0
Posted (7 years 4 weeks 2 hours ago) and read 1418 times:
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What's the advantage of painting while on jacks?


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14 replies: All unread, jump to last
 
User currently offlineMD11Engineer From Germany, joined Oct 2003, 13985 posts, RR: 62
Reply 1, posted (7 years 4 weeks 2 hours ago) and read 1417 times:

No mess in the wheel wells?

Jan


User currently offlineTheJoe From Australia, joined Oct 2006, 61 posts, RR: 4
Reply 2, posted (7 years 3 weeks 6 days 23 hours ago) and read 1381 times:

Maybe you could ensure the aircraft is in a certain spot to allow a more automated process and also to ensure that it does not move around during painting. You'd be surprised at how much an aeroplane can move around when it's empty and you walk up up and down the cabin... We will often put the tail jack in when we have an aeroplane "docked" to stop it from moving around and hitting stands. Other than that, I can't think of anything else...

User currently offlineL-188 From United States of America, joined Jul 1999, 29795 posts, RR: 58
Reply 3, posted (7 years 3 weeks 6 days 22 hours ago) and read 1371 times:

Quoting TheJoe (Reply 2):
Maybe you could ensure the aircraft is in a certain spot to allow a more automated process and also to ensure that it does not move around during painting. You'd be surprised at how much an aeroplane can move around when it's empty and you walk up up and down the cabin... We will often put the tail jack in when we have an aeroplane "docked" to stop it from moving around and hitting stands. Other than that, I can't think of anything else...

Probably a big part of that, I can see that being an issue with automatic (robot) painting systems. If it is prgramed for a part of an airplane to be in a particular place it doesn't help if that part is in a different spot because one of the struts is a little low.

Also you can paint the entire underbelly in one shot, so you don't have to worry about different color registrations on the gear door panels.

And there is probably less taping involved.


Just guesses on my part.



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User currently offlineAirframeAS From United States of America, joined Feb 2004, 14150 posts, RR: 24
Reply 4, posted (7 years 3 weeks 6 days 21 hours ago) and read 1354 times:

How did the AS Salmon-thirty-Salmon get painted? Was it 'hand' air brushed?


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User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9592 posts, RR: 52
Reply 5, posted (7 years 3 weeks 6 days 21 hours ago) and read 1347 times:

I would assume that in order to paint the landing gear doors, the gear has to be stowed. Stowing the gear would be needed because it would be difficult to paint with the gear down.

Furthermore, paint might find its way in the wheel well if the doors are open. You might end up with paint chemicals on your hydraulic systems that are located in the wheel well, which is probably not a good idea.



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User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 6, posted (7 years 3 weeks 6 days 18 hours ago) and read 1318 times:

Access to the undersurface,Stability of the Aircraft.
As regards the pic.Where is the stablizing Jack on the B763.What are the Fuselage Jack locations.
regds
MEL



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User currently offlineBAe146QT From United Kingdom, joined Sep 2006, 996 posts, RR: 0
Reply 7, posted (7 years 3 weeks 6 days 18 hours ago) and read 1317 times:

I've no doubt that there are multiple reasons (such as Rose, TheJoe and L-188 gave), but as a modeller, the very first thing that sprang to mind was "It saves you having to mask the landing gear".

[Edited 2007-07-27 09:21:16]


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User currently offlineZANL188 From United States of America, joined Oct 2006, 3516 posts, RR: 0
Reply 8, posted (7 years 3 weeks 6 days 14 hours ago) and read 1287 times:
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Quoting TheJoe (Reply 2):
You'd be surprised at how much an aeroplane can move around when it's empty and you walk up up and down the cabin...

Good point! I've seen large (100000lbs plus) aircraft move side to side during cargo loading due to pallet motion.

Quoting L-188 (Reply 3):
Probably a big part of that, I can see that being an issue with automatic (robot) painting systems.

This particular situation looks to be using a manned spray platform. Might be an issue for the platform though....

Quoting BAe146QT (Reply 7):
but as a modeller, the very first thing that sprang to mind was "It saves you having to mask the landing gear".

Yeah but you end up masking the jacks instead....



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User currently offlineSfomb67 From United States of America, joined Dec 2005, 417 posts, RR: 0
Reply 9, posted (7 years 3 weeks 5 days 21 hours ago) and read 1176 times:

Quoting BAe146QT (Reply 7):
Where is the stablizing Jack on the B763.What are the Fuselage Jack locations.
regds

The stabilizing jack (on the nose) has obviously been removed. I don't see the nose jack pad either (should be on rt side of nose). The main jacks, covered with masking, are in the wing, L/E wing root area. Don't remember the sta #. One leg of the tail jack is visible to the right of lift, aft of the wing.



Not as easy as originally perceived
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 10, posted (7 years 3 weeks 5 days 6 hours ago) and read 1121 times:

Quoting Sfomb67 (Reply 9):
The stabilizing jack (on the nose) has obviously been removed. I don't see the nose jack pad either (should be on rt side of nose).

Exactly why I was curious.How many Fuselage Jacks are holding the Aircraft up in the pic.

regds
MEL



Think of the brighter side!
User currently offlineATLAMT From United States of America, joined Sep 2001, 240 posts, RR: 3
Reply 11, posted (7 years 3 weeks 5 days 3 hours ago) and read 1103 times:

Quoting HAWK21M (Reply 10):
Exactly why I was curious.How many Fuselage Jacks are holding the Aircraft up in the pic.

There are three jacks total. Two at the wing root and one on the the tail. If you look closely at the two man lifts under the tail the stabilizing jack is behind the one on the right.



Fwd to MCO and Placard
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 12, posted (7 years 3 weeks 4 days 22 hours ago) and read 1078 times:

Compared to the B737s the Fuselage Jacks on the B767 looks more Inboard.
regds
MEL



Think of the brighter side!
User currently offlineSfomb67 From United States of America, joined Dec 2005, 417 posts, RR: 0
Reply 13, posted (7 years 3 weeks 4 days 21 hours ago) and read 1073 times:

Yes, they are more inbd than the 737's. Haven't seen a 747 jacked for a few years, but I think their wing jacks are in the fillet area like the 767.


Not as easy as originally perceived
User currently offlineDALMD88 From United States of America, joined Jul 2000, 2540 posts, RR: 14
Reply 14, posted (7 years 3 weeks 4 days 4 hours ago) and read 1029 times:

I think the main reason is the belly of the aircraft can be painted while standing on the ground. The rest of the aircraft can be painted using the stacker cranes. With the plane on the gear the belly of a 767 has to be painted off of drivable manlifts which is just more of a hassle.

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