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A little Fokker saved from the scrap heap.... Cox_ba12




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A little Fokker saved from the scrap heap.... Empty A little Fokker saved from the scrap heap....

Post  rsv1cox Mon Jan 26, 2015 9:00 am

This thing is tiny.  Received as a box of parts with two engines neither one of which fit the airplane.  

A little Fokker saved from the scrap heap.... Fokker%20002_zpsibq7ad3w

I found the correct back plate for the engine and cut pieces of plastic sheet to replace/repair the missing/broken struts and glued the thing together.

A little Fokker saved from the scrap heap.... Foker%20fini%20Sky%20015_zpszenzas3s

A little Fokker saved from the scrap heap.... Foker%20fini%20Sky%20014_zpsog18yj1z

A little Fokker saved from the scrap heap.... Foker%20fini%20Sky%20013_zpsyircybip

The rubber band may be permanent as the upper fuselage part is broken at it's weakest point.  The part that houses the engine is secured by two screws that also retain the landing gear.  The vertical stab was the biggest challenge. Looked like it had been eaten by a mouse. I tried building a replacement but couldn't get the bushing for the horizontal stab right so it would move freely. Wound up glueing it back on and cutting sheet plastic to reenforce.

I can't believe that these were ever intended to be serious flyers but I'm going to give it a try, probably re-kitting it in the process.  But it has an appeal for me, colorful and fun to look at.  But a flyer?

Has anyone actually flown one of these little Cox Bipes?
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Post  GallopingGhostler Mon Jan 26, 2015 9:40 am

I'm not attempting to derail your intentions for this aircraft, I've never owned or flown one of those. If you are concerned about preservation of a historic relic, you could template the parts with balsa or even Borden posterboard foam. It could be constructed similar to a Walt Musiciano Scientific hollow log kit with solid wings. Besides, the lighter weight of balsa or foamboard would in my estimate be a better flier. Beer Cheers
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Post  706jim Mon Jan 26, 2015 11:48 am

At least the prop is turning in the best direction to maintain line tension.
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Post  roddie Mon Jan 26, 2015 12:04 pm

I can't blame you for wanting to fly your D-VII.. or the Skyraider. If you can find an un-cut hayfield and bring a pitman for a hand-launch, even the worst crash might be cushioned by the tall grass. I had a Cox .049 powered Sopwith Camel as a very young kid (1968?) which was flown mostly by my Dad. The lines were probably 20-25 feet long.

(internet photos)

A little Fokker saved from the scrap heap.... Cox-so10

Here's another version of your Fokker...

A little Fokker saved from the scrap heap.... _57-a10

I have to agree with George on building one from balsa though. It will fly sOoOo much better! I was in the process of building a Sterling-kit DR-I (23.5" w/s) and decided to trace the top and middle wings and tail-plane pieces onto 1/8" sheet-balsa for a "sorta'-scale D-VII. I used 1/4" sheet-balsa for the fuse. I had a LOT of fun with that model! It towed banners, busted balloons and with it's large, thin lightweight wheels; did great R.O.G.'s from a freshly-mowed lawn.. every time.

Here's the Sterling kit that I scaled from..
A little Fokker saved from the scrap heap.... Sterli10

Shown here with a Babe Bee (early) The wing struts and tailskid are popsicle sticks.. and the main inverted-V gear is 1/16" music-wire mounted to the firewall.. well-forward of the C of G.. which helped both; take-offs and landings.

A little Fokker saved from the scrap heap.... Rog_cu10

and later.. with a product engine/wedge tank.. circa 1992  

A little Fokker saved from the scrap heap.... Rog_cu11
A little Fokker saved from the scrap heap.... Rog_cu12
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Post  Cribbs74 Mon Jan 26, 2015 2:38 pm

It's a plastic toy. Fly it and have fun.

It probably will fly level just fine. Expect a long rollout.
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Post  rsv1cox Mon Jan 26, 2015 5:50 pm

Thanks all.  I'm not risking anything here, not exactly "collector" quality.  

I'm glad you posted that Cox D-7 picture roddie.  Looks to be much more believable color scheme that the one I have.  Gives me an idea as to what the vertical stab should look like too.  

I notice the thrust line of your Bipe is more or less aligned with the fuselage.  Not so on these Cox models as they have a lot of down thrust built in the engines.  Curious.  I also like the built in the fuselage fuel tank.  

I like that Camel.  There is a partzer on ebay just like it.
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Post  akjgardner Mon Jan 26, 2015 8:09 pm

A little Fokker saved from the scrap heap.... 11910
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Post  GallopingGhostler Mon Jan 26, 2015 8:30 pm

Soapbox (me Huh...) wrote:
Downthrust in the Fokker DVII is to compensate for the undercamber wing, which has a tendency to lift, for better inherent stability, while providing adequate lift for a relatively heavy airplane. Many of your 1/2-A R/C trainer and some sport aircraft are set up this way when they employ a modified Clark-Y or formed undercamber sheet wing.

Problem is, when flying into the wind, velocity tends to cause the plane to rise due the acceleration of the air over the top surface causing a low pressure area (increasing upward suction) and with the undercamber causing a high pressure area. This ballooning tends to get the neophyte in trouble. However, the experienced flier will more likely than not choose better weather for flying. drunken
Enjoy your find, rsv1cox, we'll need a flight report.  Thumbs Up
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