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View Poll Results: How much foam do you consume?
1 bundle or less per year 83 33.88%
1-2 bundles per year 98 40.00%
2-6 bundles per year 42 17.14%
1-2 bundles per month 7 2.86%
2-4 bundles per month 4 1.63%
4 or more bundles per month 11 4.49%
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Old Sep 22, 2012, 07:30 AM
UMs & parkflyers... for now.
davidterrell80's Avatar
United States, VA, Herndon
Joined Apr 2012
2,880 Posts
The "Slowly" built from this thread http://www.rcgroups.com/forums/showthread.php?t=1686460

It flies at a slow crawl... and is very overpowered, in my case.
So, I'm adding floats for more drag... and more fun.

David
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Old Sep 22, 2012, 11:23 PM
Altitude is my friend...
Depronicus's Avatar
Southern California
Joined May 2009
1,440 Posts
Quote:
Originally Posted by davidterrell80 View Post
The "Slowly" built from this thread http://www.rcgroups.com/forums/showthread.php?t=1686460...
...which has a typo in the thread title (and also in the video title) that, somehow, has never been corrected after all this time.
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Old Sep 23, 2012, 06:56 AM
UMs & parkflyers... for now.
davidterrell80's Avatar
United States, VA, Herndon
Joined Apr 2012
2,880 Posts
Quote:
Originally Posted by Depronicus View Post
...which has a typo in the thread title (and also in the video title) that, somehow, has never been corrected after all this time.
Which is entirely possible, from our point of view, given that Jurgen (who brought the design to my attention) and Christan (the plane's designer) are both German-speakers, Christan exclusively so. I'm very appreciative of Google Chrome's connection to the Translate function as I haven't used my German skills to any extent for over a decade. The German RC sites have some real scratchbuild gems.

For example, the Pinkus Special is now on my list for a MPF'ercation treatment, this winter.
http://modell-aviator.de/aktuell/knufffaktor/
The "download starten!" button on the right will get you the plan.



A video here...
Modell AVIATOR: Pinkus Special (2 min 44 sec)
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Old Sep 23, 2012, 12:11 PM
Slipping the Surly Bonds
dz1sfb's Avatar
Attica, MI
Joined Dec 2006
10,382 Posts
That is a cute little plane David! Though I kept getting a damaged file message. Where you able to get it?

Ken
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Old Sep 23, 2012, 01:34 PM
CNC Cutter
birdofplay's Avatar
United States, IN, Indianapolis
Joined Dec 2005
8,530 Posts
Ken I just got it ! no e-complaints !

Do yo have any more info on the Show in Columbus ?

I will be living in Indiana in two weeks ( Oct 6 ) and should be able to make it to that show.
and JR aerotows and Toledo and and and !

Bob
Hoosier Cutout Service
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Old Sep 23, 2012, 03:00 PM
Slipping the Surly Bonds
dz1sfb's Avatar
Attica, MI
Joined Dec 2006
10,382 Posts
Quote:
Originally Posted by birdofplay View Post
Ken I just got it ! no e-complaints !

Do yo have any more info on the Show in Columbus ?

I will be living in Indiana in two weeks ( Oct 6 ) and should be able to make it to that show.
and JR aerotows and Toledo and and and !

Bob
Hoosier Cutout Service
Bob,
Glad you'll be in the area soon. Looking forward to meeting.

Here is a link to the show http://www.rcgroups.com/forums/showthread.php?t=127468

Ken
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Old Sep 23, 2012, 03:01 PM
Slipping the Surly Bonds
dz1sfb's Avatar
Attica, MI
Joined Dec 2006
10,382 Posts
Still having problems getting the file. Probably a problem on my end. Things have been a bit wonky lately.

Have a float set for the PS. So could you post for a trade. Then we'll delete the attachment? Also here is the error message I keep getting.

Ken
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Old Sep 23, 2012, 03:50 PM
UMs & parkflyers... for now.
davidterrell80's Avatar
United States, VA, Herndon
Joined Apr 2012
2,880 Posts
The original pdf file is a touch over the 3MB limit. So I opened it in Acrobat and saved it as an "optimized" pdf, saving 1.2 MB. let me know if this looks OK.

In a week or so, I'll remove the attachment, unless someone says do it sooner.

David
davidterrell80-at-hotmail-dot-com if you want the original pdf
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Old Sep 23, 2012, 05:03 PM
Slipping the Surly Bonds
dz1sfb's Avatar
Attica, MI
Joined Dec 2006
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Thank you David! It looks perfectly usable. I will do likewise.

Ken
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Old Sep 25, 2012, 12:08 AM
Altitude is my friend...
Depronicus's Avatar
Southern California
Joined May 2009
1,440 Posts
Quote:
Originally Posted by Michael V View Post
You may want to try WBPU...
After laminating the two big sheets (that I easily rubbed the Elmer's off of) with water-based polyurethane clear varnish, and letting them sit for two weeks (due to Real Life getting in the way), there's no doubt that WBPU is a great adhesive for bonding MPF.

I used the Rustoleum brand, and it has fused the two sheets into a solid sheet of 10mm MPF. I made quite an effort to pull them apart, and failed completely. This is a permanent bond, and even without taping or adding CF spars, it feels nice and stiff already.

So let's see: WBPU is cheap, available everywhere, non-flammable, pretty much non-toxic, applies easily, cleans up with water, and bonds the foam completely.

What's to not like?

Time to order another box of MPF, laminate up four sheets into two, and build a big ol' 3D biplane out of it.

Thanks for giving me the impetus to try WBPU, Michael V.
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Old Sep 25, 2012, 03:48 AM
Registered User
Michael V's Avatar
United States, CA, Torrance
Joined Apr 2012
700 Posts
You're welcome. I can't claim the idea, read it somewhere, but when I tried it, it seemed great. Your test on big sheets confirms it then.

So WBPU for laminating and GG for gluing, and the strength of these bonds is all that one needs for MPF.
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Old Sep 25, 2012, 08:01 AM
AKA Don
bz1mcr's Avatar
United States, MI, Houghton Lake
Joined Dec 2002
7,542 Posts
Quote:
Originally Posted by Depronicus View Post
After laminating the two big sheets (that I easily rubbed the Elmer's off of) with water-based polyurethane clear varnish, and letting them sit for two weeks (due to Real Life getting in the way), there's no doubt that WBPU is a great adhesive for bonding MPF.

I used the Rustoleum brand, and it has fused the two sheets into a solid sheet of 10mm MPF. I made quite an effort to pull them apart, and failed completely. This is a permanent bond, and even without taping or adding CF spars, it feels nice and stiff already.

So let's see: WBPU is cheap, available everywhere, non-flammable, pretty much non-toxic, applies easily, cleans up with water, and bonds the foam completely.

What's to not like?

...
Thanks for the great report. I wonder about the two week set time. If you do any more tests let us know what it's like after say 4 hours or 1 day. Two weeks would be along time to wait for many foamie builders.
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Old Sep 25, 2012, 09:59 AM
Registered User
cracksmeup's Avatar
United States, IL, Joliet
Joined Jun 2009
3,358 Posts
Quote:
Originally Posted by Depronicus View Post
After laminating the two big sheets (that I easily rubbed the Elmer's off of) with water-based polyurethane clear varnish, and letting them sit for two weeks (due to Real Life getting in the way), there's no doubt that WBPU is a great adhesive for bonding MPF.

I used the Rustoleum brand, and it has fused the two sheets into a solid sheet of 10mm MPF. I made quite an effort to pull them apart, and failed completely. This is a permanent bond, and even without taping or adding CF spars, it feels nice and stiff already.

So let's see: WBPU is cheap, available everywhere, non-flammable, pretty much non-toxic, applies easily, cleans up with water, and bonds the foam completely.

What's to not like?

Time to order another box of MPF, laminate up four sheets into two, and build a big ol' 3D biplane out of it.

Thanks for giving me the impetus to try WBPU, Michael V.
Nice report i will use this in the future when i need thicker stuff for my planes. joe
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Old Sep 25, 2012, 12:20 PM
Altitude is my friend...
Depronicus's Avatar
Southern California
Joined May 2009
1,440 Posts
Quote:
Originally Posted by bz1mcr View Post
...Two weeks would be along time to wait for many foamie builders.
True, but the two-week wait was only because I've been busy. I'd bet it was like this after a week or maybe less.

Besides, we have to look at the big picture:

Dag214 has been working on this incredible plane for four years now.

It took them 185 years to build this.

Waiting a week or two for some glue to dry shouldn't be a deal-breaker.
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Old Sep 25, 2012, 01:05 PM
Slipping the Surly Bonds
dz1sfb's Avatar
Attica, MI
Joined Dec 2006
10,382 Posts
I can't even imagine that much of my life tied up into a model. It is awesome to behold, but man, the time in the CAD work itself makes my head spin, let alone just building it.

Thanks for sharing that D.

Ken
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