Boeing 777 200LR - Page 5 - RC Groups
Thread Tools
Feb 24, 2011, 10:53 PM
Say watt?!
killerwin's Avatar
Looking good, Peter. How long does it take you to clean the basement after a build like this?
Sign up now
to remove ads between posts
Feb 24, 2011, 11:47 PM
Registered User
Doushiyou12's Avatar
spackle is your friend lol. i have used heaps of it
Feb 25, 2011, 01:50 AM
Go FASST or go home...
Ben_E's Avatar
Quote:
Originally Posted by killioughtta
Looking good, Peter. How long does it take you to clean the basement after a build like this?
Why clean it? I don't get it

Looks just fine to me!

Ben_E
Feb 25, 2011, 11:51 AM
Registered User
LuvEvolution7's Avatar
yeah, it wouldn't take too much to modify your nose. just a bit of sanding to the right shape, if it's solid foam.
Feb 25, 2011, 11:54 AM
Retardedly intelligent
foam and tape's Avatar
Took me 3 days to clean the basement from where it was to now where it is. Spent last night fixing the nose and adding some spackle and started building the wing box. Now I have to figure out how to shape the wing box....
Feb 25, 2011, 12:07 PM
Registered User
LuvEvolution7's Avatar
you are doing a wing box construction, like my 57? face the top and bottom of vertical edges with balsa and then use your wing ribs for solidity and then skin the top and bottom. I am also using coffee filter paper and WBPU on the inside edges as a composite sandwich. the whole structure is incredibly strong and light.
Feb 25, 2011, 12:17 PM
Retardedly intelligent
foam and tape's Avatar
Got to remember the coffie filter paper wbpu trick! Sounds intresting.
Feb 25, 2011, 01:02 PM
Registered User
LuvEvolution7's Avatar
I'm also doing the entire outer shell of the fuselage with coffee filter paper and WBPU. it's very hard when dry and light. not quite as strong as glassing with epoxy, but very good for what it is.

here's how my wing box is constructed: the wing is in three pieces before final joining, the two outer and the central wing section. I knew the thickness of each wing rib, so I was able to make a template of the two wing spars, as if looking from the front and rear. these are your vertical surfaces of the wing box. decide what thickness your balsa facing will be (I used 1/8 inch) and cut spar out of foam to suit. this balsa facing will give the foam incredible strength. make the rear spar the same way. your foam wing ribs link the structure together, but I remove every other rib, to allow the wing to flex somewhat. this extra space also allows for internals such as flap mechanics, etc. remember to make the rib in the nacelle pylon location out of ply or a composite sandwich of foam and two balsa layers. I join the outer panels to the inner panel with a male/female join and epoxy. the join is at the ply rib for the engine pylon for extra strength in that location.

just thought I'de share how I did it.

Rich
Feb 25, 2011, 01:38 PM
Scale Modeler
Concordefan's Avatar
Pictures please, great progress being done on this model, spending good amount of time on her......lolz
Feb 26, 2011, 11:01 PM
Retardedly intelligent
foam and tape's Avatar
Quote:
Originally Posted by LuvEvolution7
I'm also doing the entire outer shell of the fuselage with coffee filter paper and WBPU. it's very hard when dry and light. not quite as strong as glassing with epoxy, but very good for what it is.

here's how my wing box is constructed: the wing is in three pieces before final joining, the two outer and the central wing section. I knew the thickness of each wing rib, so I was able to make a template of the two wing spars, as if looking from the front and rear. these are your vertical surfaces of the wing box. decide what thickness your balsa facing will be (I used 1/8 inch) and cut spar out of foam to suit. this balsa facing will give the foam incredible strength. make the rear spar the same way. your foam wing ribs link the structure together, but I remove every other rib, to allow the wing to flex somewhat. this extra space also allows for internals such as flap mechanics, etc. remember to make the rib in the nacelle pylon location out of ply or a composite sandwich of foam and two balsa layers. I join the outer panels to the inner panel with a male/female join and epoxy. the join is at the ply rib for the engine pylon for extra strength in that location.

just thought I'de share how I did it.

Rich
huh? got pics? good info though, I had to read it a few times though (my incompetent mind cant figure out what i'm reading)
Feb 26, 2011, 11:18 PM
Say watt?!
killerwin's Avatar
Quote:
Originally Posted by foam and tape
huh?
^
|
|____ What he said...
Feb 26, 2011, 11:27 PM
Registered User
LuvEvolution7's Avatar

wing box pics


here's a few pics from Olle's A380 build. mine is built exactly the same way. I'll post pics of mine tomorrow, but they look exactly the same as these.
Feb 26, 2011, 11:32 PM
Retardedly intelligent
foam and tape's Avatar
thanks Rich, pictures are (literally) worth a thousand words.
Feb 26, 2011, 11:39 PM
Registered User
LuvEvolution7's Avatar
yup, you get the point now. LOL. it's all good. the good thing about a wing box structure, is that it will be incredibly strong, just like the real thing. the other added benefit is that it will allow the wing to flex and flap like the full size too.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Boeing 777-200LR Twin 90mm project NickM91 Scratchbuilt EDFs 20 Jul 10, 2011 09:40 AM
boeing 777 u.s air Scale Kit/Scratch Built 16 Dec 03, 2002 07:15 PM
Looking for Boeing 777 AutoCad Drawing David McCracken Electric Ducted Fan Jet Talk 5 Nov 25, 2002 07:23 PM
Boeing 777-200/300 Sections Guybo Fuel Jet Talk 3 Jun 15, 2002 08:04 PM
boeing 777 nacelle jermaine Electric Ducted Fan Jet Talk 1 May 20, 2002 02:24 AM