Author Topic: Fokker DVII Ernst Udet LO!  (Read 3682 times)

Offline DMPopa

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Re: Fokker DVII Ernst Udet LO!
« Reply #30 on: September 29, 2024, 05:11:05 AM »
All of the various pieces are coming together and the airplane is now looking like a biplane.

The lower wings are first attached and supports are cut from cardboard that will hold the upper wing at the correct elevation and position.    The carboard supports are held in place to the lower wings by rubber bands.



Initially four inner struts are installed.  These for inner struts are made from K&S 3/64 Brass rods.  The struts on the Fokker DVII are metal on the real plane and are relatively small in diameter.   Other methods of support, Evergreen Rod or thin wire covered in paper has troubled me as being too flexible to properly position and support the upper wing.  The 3/64 brass rod appears to be to be a correct diameter. and is stiff and relatively easy to bend and cut vs. music wire.    A piece of rod is cut and a bend is made that will fit into the fuselage.  The rod is spraypainted red primer.



The upper wing attachment worked best by inverting the fuselage and lower wing.



This is a view of the four supports from the upright position.  The supports are inserted into the holes previously constructed in the upper wing and secured with Crazy Glue.



The resulting construction is stiff, strong and the wings are properly positioned.

The other inner supports are made from Evergreen .041 Polystyrene rod no. 211 as no additional allowances for stiffness is needed.  The polystyrene is easier to work with than the brass and is almost the same diameter.   These supports are also painted red primer. 



The two sets of outer wing supports are made from Evergreen 1/6" Polystyrene rod, No. 222 that has had the opposite sides sanded smooth to give these supports an aerodynamic look.  These supports are also painted red primer.   The vertical supports go in first and the diagonal supports go on last.










« Last Edit: October 07, 2024, 01:22:34 PM by DMPopa »

Offline NigelR

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Re: Fokker DVII Ernst Udet LO!
« Reply #31 on: September 30, 2024, 05:33:57 PM »
More clever engineering work! This is coming together very nicely.

Offline NinetythirdLiberator

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Re: Fokker DVII Ernst Udet LO!
« Reply #32 on: October 03, 2024, 12:34:26 AM »
Su-WEET!  Looking really great.  Home stretch!

Dan

Offline DMPopa

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Re: Fokker DVII Ernst Udet LO!
« Reply #33 on: October 07, 2024, 01:47:07 PM »
The landing gear is done.

The Wheels are built up using cardboard using the kit design.

These are the individual pieces:



Pieces glued together with a hole drilled in the center:



Wheels painted dark grey primer.  The tires are rounded out with a glaze, MH ReadyPatch, and sanded, repainted reglazed, and sanded and painted again.



Glass beads at the center hole to cause the center skin to achieve a conical shape.  I use a .031 music wire to canter the beads while they are drying.



Conical skin attached:



The method that I use for WWI landing gears is to use as struts K&S 3/64 Brass rods.  These provide the necessary stiffness and the diameter provides additional bearing area at the connect point vs. thin music wire wrapped in paper.  The goal is to construct the landing gear so that the airplane sits properly from all angles and a structure that is stiff and stable that can handle adjustment during construction is required to achieve this.  The Fokker landing gear presents a challenge as the sub wing needs to be positioned accurately and quite frankly, gets in the way.   The kit design has the struts connect from the fuselage to the wing separately and as music wire wrapped in paper.  My experience with this situation always gave un-satisfactory results.   The direction that I took for the struts is to make loops of the brass rods painted red primer and feed them through the sub wing.  Later they will be separated to final V shape.   The axle is .031" music wire wrapped in paper velum which is glued to the lower wing.



The wing skin is folded over and the struts are separated.  The rigging wire is pre-assembled using EZ Line.



Another view.   The end pieces are left off as my plan is to add glue at the side locations and paint in red primer after the wing is properly positioned on the fuselage. 



Struts and sub-wing assembled to the fuselage with glue added to the sub wing end pieces.



Final look with wheels and rigging wire in place.   Turnbuckles are rendered in velum paper wrapped around .031" music wire as done on the Phonix DI


« Last Edit: October 07, 2024, 08:55:31 PM by DMPopa »

Offline DMPopa

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Re: Fokker DVII Ernst Udet LO!
« Reply #34 on: October 08, 2024, 10:21:16 PM »
This is the completed Fokker DVII with the horizontal stabilizer struts and support cables, radiator filler tube and propeller added.






Offline Dirigible-Al

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Re: Fokker DVII Ernst Udet LO!
« Reply #35 on: October 09, 2024, 12:54:28 AM »
I just can't get my head around this being done with paper. Brilliant job.
Alan.
I heard that it all started when a bloke called Archie Duke shot an ostrich 'cause he was hungry!

Offline NigelR

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Re: Fokker DVII Ernst Udet LO!
« Reply #36 on: October 10, 2024, 05:56:40 PM »
Very well done! Another impressive build in paper and card.

Offline gomidefilho

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Re: Fokker DVII Ernst Udet LO!
« Reply #37 on: October 18, 2024, 06:38:16 AM »
Very impressive work!!! Amazing! And nice tutorial! Thanks!

Offline NinetythirdLiberator

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Re: Fokker DVII Ernst Udet LO!
« Reply #38 on: October 20, 2024, 03:18:12 PM »
Well that is a very nice rendition in paper.  Super cool color scheme.  Ernst would be proud!

Dan

Offline Gene K

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Re: Fokker DVII Ernst Udet LO!
« Reply #39 on: November 13, 2024, 11:42:21 PM »
Outstanding! Thanks for the graphics tutorial.

Gene K

Offline RAGIII

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Re: Fokker DVII Ernst Udet LO!
« Reply #40 on: March 01, 2025, 04:44:58 AM »
Excellent DVII!
RAGIII
"A man has to know his limitations": Harry Callahan

"Don't slop it on" Lynda Geisler