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Scratchbuilders!: Aircraft
This is a group for aircraft scratchbuilding questions, topics and projects.
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How would you build this?
diseasedspawn
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Florida, United States
Joined: September 22, 2012
KitMaker: 97 posts
AeroScale: 30 posts
Posted: Wednesday, December 26, 2012 - 03:57 PM UTC
Need a little advice. I'm scratch building this entire interior of a folded wing of an A-6 TRAM Intruder, but I can't figure out how to scratch build the folding mechanism:-? . It's the W-shaped thing in the pic. Any ideas?



Remember, there are no bad ideas so gimme whatever you got.

Thanks!
KoSprueOne
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Myanmar
Joined: March 05, 2004
KitMaker: 3,780 posts
AeroScale: 10 posts
Posted: Wednesday, December 26, 2012 - 04:07 PM UTC
what scale?
The first thing that comes to mind is vehicle suspension parts




diseasedspawn
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Florida, United States
Joined: September 22, 2012
KitMaker: 97 posts
AeroScale: 30 posts
Posted: Thursday, December 27, 2012 - 02:30 AM UTC
1/48

tell me more about these suspension parts
retiredyank
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Arkansas, United States
Joined: June 29, 2009
KitMaker: 11,610 posts
AeroScale: 79 posts
Posted: Thursday, December 27, 2012 - 06:24 AM UTC
I would recommend looking at some of the Plastruct and Evergreen offerings. They have some beam material that makes "w" shaped parts, in various scales. Two of these sandwiched together, with plastic rod between should be acceptable for 1:48.
dioman13
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Indiana, United States
Joined: August 19, 2007
KitMaker: 2,184 posts
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Posted: Thursday, December 27, 2012 - 06:41 AM UTC
For the hydrolic part a 1/48th shock absorber from a jeep or truck might work. Imagination is your best friend when it comes to scratch building, next best friend is plastruct.
18Bravo
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Colorado, United States
Joined: January 20, 2005
KitMaker: 6,528 posts
AeroScale: 86 posts
Posted: Thursday, December 27, 2012 - 12:39 PM UTC
In my gallery is a close up of a helo rotor with similar parts, but at that scale, the hydraulic actuators can just be varying thicknesses of styrene rod with a disc cemented on the end at 90 degrees. I would build from that central pivot point outward to the hydraulic bushings. It looks as if .020 x .020 styrene would work well for most of the project.
KoSprueOne
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Myanmar
Joined: March 05, 2004
KitMaker: 3,780 posts
AeroScale: 10 posts
Posted: Thursday, December 27, 2012 - 12:46 PM UTC
Some good advice up here.
The automobile suspension I was thinking about was from Formula 1 kits like from Tamiya. But your project at 1/48, it would be too big.




RotorHead67
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Virginia, United States
Joined: May 07, 2003
KitMaker: 1,174 posts
AeroScale: 226 posts
Posted: Thursday, December 27, 2012 - 03:34 PM UTC
Mark;
Because of the location, and the delicate nature of the part,
I would use brass parts sodered together. But it's gonna be a tuff one. Todd
diseasedspawn
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Florida, United States
Joined: September 22, 2012
KitMaker: 97 posts
AeroScale: 30 posts
Posted: Tuesday, January 01, 2013 - 03:52 PM UTC
Thanks everyone. Going to combine a few ideas. I bought some styrene tressels from Plastruct. They have V shaped parts that I will cut off and shave, then use some other styrene to construct the part as apart of the plane. Will let you know how it goes. Wish me luck!
Scratchbuilder
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England - East Anglia, United Kingdom
Joined: March 16, 2013
KitMaker: 1 posts
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Posted: Saturday, March 16, 2013 - 12:43 AM UTC
I would make each V shaped piece in thin brass, then solder together with the hydraulic legs trapped between. To cut out the V-shaped pieces you just need a pin chuck and a piercing saw. Both available very cheaply.
In plastic, the same approach by cutting the triangular shape out of two small sheets of styrene, then solvent gluing to the hydraulic components made from plastic rod. Fiddly but perfectly doable.

Martin
tankmodeler
#417
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Ontario, Canada
Joined: March 01, 2004
KitMaker: 3,089 posts
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Posted: Saturday, March 30, 2013 - 08:28 AM UTC

Quoted Text

Need a little advice. I'm scratch building this entire interior of a folded wing of an A-6 TRAM Intruder, but I can't figure out how to scratch build the folding mechanism:-? . It's the W-shaped thing in the pic. Any ideas?


It looks to be 3-4 mm tall so I'd make the two triangles form .010 x .020 strip and add the fittings at apexes of the triangles for the hinge rod. Once you have two mirror image triangles add the 4 pieces that bridge the two triangles and then add the fittings for the two hydraulic jacks.

Then do it again for the other wing...
F3066
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Victoria, Australia
Joined: November 20, 2004
KitMaker: 71 posts
AeroScale: 0 posts
Posted: Saturday, March 30, 2013 - 08:50 AM UTC
3D printing