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Old Apr 21, 2011, 04:14 AM
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Joined Oct 2009
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INSTRUCTIONS? surely you meant suggestions....

similar to BOP i used four ribs starting at the tip spaced evenly to the inner most aileron edge. the nacelles provide the ribbage from there in to the fuse with the larger ribs. and must say i am inpressed with the strength and ridgity (sp) of the wing as a whole, or course like many here i ran a 5mm cf tube as a main spar right down the CG of the wing panels, then used a .192 cf rod on the LE.

BOP that is a neat idea on NOT cutting the Aileron on the hinge(sic) line, to late for me however, i cut mine free and used some of that re-enforced tape tacked with the 3m 77 spray, i did try a test prior to that, it holds REAL well ( but the real proof will be in the air)
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Old Apr 21, 2011, 04:54 AM
I just want to fly.
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United States, CO, Thornton
Joined Jan 2002
814 Posts
I know this is past the current topic, but for us colorado dwelling folk, I have found a source of FFF local to the Denver metro area. Got it for $50 a bundle. Hit me up with a PM if u ever plan a trip to "civilization". And I can get you the needed info.
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Old Apr 21, 2011, 12:02 PM
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United States, IN, Indianapolis
Joined Dec 2005
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fla-larry: There ya go ! :-) more good ideas and alternatives.

sapok: The Lowes at Portland Or had bundles a while back too.
but that a ways from Denver.
My local Lowes would not even order the stuff for me. go figure?

I believe that NCG reported that more species FLY than Do not.

SO just DO IT and it'll probably work :-)

For those readers too overwhelmed by the sheer volume of this thread,
and I was one of you when I started my build ...
My build postings + pix are 2234, 2239, 2245, 2264, 2281 ( the WING ), 2290.
It took me a while to find them again !

I'm sure that there are other examples of similar build progressions.

The FUSE nose gets the same treatment as the wings for Bending.
Tape one side, Crease the other, gently bend.

"MOST" of that interior creasing will disappear as parts come together.
HOWEVER, I did cheat as use a bit of Lightweight Spackle where my build
was somewhat less fastidious. ( AKA - sloppy followed by oops. spilled glue and dropped tools)

It's amazing how well Spackle matches the sanded edges of white depron.
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Old Apr 21, 2011, 12:29 PM
Bacon makes everything better
UberSpeck's Avatar
USA, CO, Centennial
Joined Feb 2011
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Thanks for the details BOP! I'm looking forward to working on the wings tonight

BTW, where did you get your depron? It's a bit more rigid than the gray depron i just received from rcfoam.com...
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Old Apr 21, 2011, 01:39 PM
Bacon makes everything better
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USA, CO, Centennial
Joined Feb 2011
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Quote:
Originally Posted by birdofplay View Post
Brian, if you need some replacement parts let me know !

Bob
Not yet, but you can bet I'll screw up something during the build

I looked through your wing build photos and I have a better understanding of how i should proceed. However, I'm still not clear on the use of the wing foil pieces

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Old Apr 21, 2011, 01:50 PM
Bacon makes everything better
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USA, CO, Centennial
Joined Feb 2011
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Larry, I've noticed you like big birds and are obviously quite good at putting plans together. I came across some great plans for a balsa/nitro CL-215 that would make for a fun build. They were free online (wish i could remember the site ) These should make creating foam plans fairly straight forward I would think? Anyway, don't mean to take this thread off topic but thought these were worth sharing...
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Old Apr 21, 2011, 02:00 PM
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United States, IN, Indianapolis
Joined Dec 2005
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I used those Deeper ribs at the INSIDE of the FUSE SIDES.

They help line up ( center ) the wing on the fuse when rubberbanding it down.

I RCFOAM.COM's site there is a density table.
It details the specs on the types of foam that they carry.

Black/Gray is a lot softer and lighter and a tad weaker IMHO.

But it works great on my MDC F-14 swing wing.

It's kinda soft and light like the NEW type of depron that they are carrying.
It requires a LOT more care to keep from bruising it during a build.

I tend to be a ham hand so it's not for me in most cases.

Bob
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Old Apr 21, 2011, 04:35 PM
Wait... what?
aeryck's Avatar
United States, MI, Plymouth
Joined Sep 2010
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I have found that a splining tool for screen doors and window screens works great for creasing Depron and FFF for bending. It's not sharp so it won't cut the foam (unless you're really pressing down on it).

Just roll it along a straightedge with enough pressure to make your crease. You should be able to get a splining tool at just about any area hardware store as it is a pretty common "DIY" tool.

Looks like this, although not all of them have dual rollers:

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Old Apr 21, 2011, 10:25 PM
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Nelson, New Zealand
Joined Feb 2008
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birdofplay: My friend with the phlatprinter made his "twins" out of cardboard, I'm going to send him the pdf plans and see if he can cut them on his mk3 phlatprinter. I'm doing the 75% twins.
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Old Apr 21, 2011, 10:53 PM
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If he isnt willing to do the work let me know.
I have dxf's ready for std material sized depron.
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Old Apr 22, 2011, 10:33 AM
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Attn: birdofplay, I got my three 75%'ers. VERY nice. I have a set of patterns I made for my first 75% twin that I had laminated at Office Max so they are rigid and can be used over and over. Your cut outs appear to be EXACTLY the same as mine, other than the fuse is about 1/4" longer. The other pieces that have to work with the length of the plane also appear to be longer by 1/4", so it will all work together. Funny, all appears to be exact except the plane will be 1/4" longer. Must be all that humidity up in Washington. Thank you for the nice pieces and safe packing.
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Old Apr 22, 2011, 10:34 AM
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Quote:
Originally Posted by aeryck View Post
I have found that a splining tool for screen doors and window screens works great for creasing Depron and FFF for bending. It's not sharp so it won't cut the foam (unless you're really pressing down on it).

Just roll it along a straightedge with enough pressure to make your crease. You should be able to get a splining tool at just about any area hardware store as it is a pretty common "DIY" tool.

Looks like this, although not all of them have dual rollers:

Great idea, can't wait to try it.
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Old Apr 22, 2011, 10:40 AM
Bacon makes everything better
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USA, CO, Centennial
Joined Feb 2011
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Quote:
Originally Posted by urpu36 View Post
Attn: birdofplay, I got my three 75%'ers. VERY nice. I have a set of patterns I made for my first 75% twin that I had laminated at Office Max so they are rigid and can be used over and over. Your cut outs appear to be EXACTLY the same as mine, other than the fuse is about 1/4" longer. The other pieces that have to work with the length of the plane also appear to be longer by 1/4", so it will all work together. Funny, all appears to be exact except the plane will be 1/4" longer. Must be all that humidity up in Washington. Thank you for the nice pieces and safe packing.
Wondering if your original plans didn't compensate for angles and the curves in the nose? Orthographic projection doesn't do very well when getting exact lengths in those situations...I know from experience
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Old Apr 22, 2011, 10:45 AM
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United States, CA, San Ramon
Joined Oct 2002
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Quote:
Originally Posted by aeryck View Post
I have found that a splining tool for screen doors and window screens works great for creasing Depron and FFF for bending. It's not sharp so it won't cut the foam (unless you're really pressing down on it).

Just roll it along a straightedge with enough pressure to make your crease. You should be able to get a splining tool at just about any area hardware store as it is a pretty common "DIY" tool.

Looks like this, although not all of them have dual rollers:

Brilliant idea!
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Old Apr 22, 2011, 10:47 AM
Bacon makes everything better
UberSpeck's Avatar
USA, CO, Centennial
Joined Feb 2011
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Quote:
Originally Posted by aeryck View Post
I have found that a splining tool for screen doors and window screens works great for creasing Depron and FFF for bending. It's not sharp so it won't cut the foam (unless you're really pressing down on it).

Just roll it along a straightedge with enough pressure to make your crease. You should be able to get a splining tool at just about any area hardware store as it is a pretty common "DIY" tool.

Looks like this, although not all of them have dual rollers:

Good stuff! Think I'll hit Home Depot over lunch and pick one up
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