FlyerInStyle
Elite member
they sell quarter inch foam.
Giant Plane Builds into 2022
- Thread starter billyshaw22
- Start date
billyshaw22
Active member
On this plane, I will prep it with lightweight filler and sand everything smooth then I am going to coat it with polyacrylic. As far as final finish, I haven't made my mind up exactly what paint I will use so that's still to be determined
billyshaw22
Active member
The sheeting is fan fold insulation sold at home depot. Its 1/4in thick there is 25 sheets that are 2ft by 4ft.
billyshaw22
Active member
****One thing I wanted to note, I'm not posting this build as I'm building it, so I am currently ahead of the posts on here. At this current time the posts are about a week behind actual building**** Back to the build.... after getting the ideas draw up on the wing and how I want it to mount, I started sheeting on the front half of the fuse. I also needed to make access holes to get to the bolts that mount the two fuselage halves together. compartment doors are going to be at the access points and the two side doors will be magnetic since the wing will cover them once its installed. I also added more support to the underside of the fuselage in-between the formers.
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billyshaw22
Active member
Wing spar mount, I cut everything out and have it tested fitted. the wing will slide into this holder and be bolted into place. i will add mounting bolts behind the spar that go into the side of the wing later.
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billyshaw22
Active member
I am going for under 55 lbs. I know that sounds insane, this is why I'm not planning on the final finish work yet. (paint and covering etc.)
billyshaw22
Active member
Custom fiberglass Wing Socket
This is a link to how I make wing tube sockets..... in this video I made the two sockets that are going into the inboard center section of the wing. I will make two more for the outboard when I get started on the build of the outboard wing panels.
This is a link to how I make wing tube sockets..... in this video I made the two sockets that are going into the inboard center section of the wing. I will make two more for the outboard when I get started on the build of the outboard wing panels.
Baron VonHelton
Elite member
Starting with fixed gear is definitely your best bet to keep the weight under 55lbs.
I'm very dubious about those giant metal blocks for your scaled-up retracts though; I would caution you greatly against simply "scaling up" an RC-style retract, and instead look at more realistic full-scale style mechanism. Those metal billets are gonna hurt your weight HARD.
Everything else is looking great! Awesome progress!
billyshaw22
Active member
Ben, thank you for the input, BTW your 1/4 scale c47 is awesome . Let me elaborate a little, The gear isn't exactly " scaled up" I only used the basic design from a spring-air style retrack and (highly) modified it to get the correct geometry . I have made a set of these about 3/4 of this size for a past project, they end up being extreme overkill for these foam planes. I was going to make a scale gear, but the time factor would kill me. I am wanting to fly it this season. The photos I posted of the blocks are in the first stages of cutting everything out so there will be plenty of lightening up from those pictures. Lets face it "55 lbs." is a pipe dream, (cough cough I hope ama isn't reading in) I will have at least 35lbs in just electronics alone. (two 50cc electric motors, 2 escs, 4x 6s5000 batteries, 15 servos, 4 rx's, 4 2s1500 rx batteries, air pneumatics.) The weight will be what it is when its complete, the only thing I really care about at this point is strength and if it flys well.
the rc project
Well-known member
My guess is that they don’t sell that thin up North. I can only get half inch at thinnest…. I’ve looked in many a depot stores with no luck
55.........POUNDS??
She would float like a feather at that weight. Cube loading is real
On edit:
Full scale had a wing loading of AT BEST 504oz/sq ft and a cube loading of about 20
This model @ 55lbs has a wing loading of 10oz/sq ft and a cube loading of about 2
. Similar to @Mid7night 's monster, he would probably be able to ride thermals with it
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billyshaw22
Active member
Up north? how far north are you? I live in northeastern Ohio and we have it all the Home Depot's.
cyclone3350
Master member
the rc project
Well-known member
I’m only in southern Ontario, probably further south than you. But the stuff @cyclone3350 posted above is just not on any (Canadian) websites.
billyshaw22
Active member
billyshaw22
Active member
billyshaw22
Active member
Soooo, I started into more projects, I will be posting those up in the near future, but here is the progress I was able to get on the b-25, the wing mount is glued in. I sheeted a few more sections and braced up the opening for the front gear along with under the wing mount.
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