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Replica Aircraft Topics related to the construction of WWI replica aircraft


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Old 20 September 2009, 01:40 PM   #1 (permalink)
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Early Birds Fokker D VII engine run

My first attempt to upload a video on youtube.
Hope you like it.


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Old 20 September 2009, 03:11 PM   #2 (permalink)
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Congratulations Willem, what a stunning aeroplane and the sound of that engine, just magnificent.

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Old 21 September 2009, 10:13 AM   #3 (permalink)
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Very enjoyable, and it's entertaining watching the guy run back and forth as he performs all the functions neccessary to get the thing running!
Robert Karr
not a roadside tourist attraction:
The Fine Art of Aviation/Robert Karr, Grant-Free Artist
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Old 21 September 2009, 03:17 PM   #4 (permalink)
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Quote:
Originally Posted by karrart View Post
Very enjoyable, and it's entertaining watching the guy run back and forth as he performs all the functions neccessary to get the thing running!
Robert Karr
not a roadside tourist attraction:
The Fine Art of Aviation/Robert Karr, Grant-Free Artist

It keeps me in shape

Willem
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Old 21 September 2009, 03:22 PM   #5 (permalink)
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Quote:
Originally Posted by Makhpiyaluta View Post
It keeps me in shape

Willem
You should have at least one really strong flexible arm from cranking the mag!
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Old 21 September 2009, 03:25 PM   #6 (permalink)
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Swinging the prop is much harder especialy when you forget to use the decompression lever. In this video I did everything right.

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Old 5 October 2009, 10:40 AM   #7 (permalink)
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Thumbs up merc run

like it? no, i loved it-- thank you willem for posting this. what was the r.p.m. at initial idle? it was ticking over so slowly you can hear individual cylinders fire-- what a fine piece of machinery for 1918.
what was your coolant temp when you started cracking throttle open? outside air temp [OAT]?
i noticed at higher r.p.m. the propwash caused the fabric to flex on the bottom of the top wing almost out to the N struts-- interesting.
i also noticed the engine stuttered a beat or two when you opened the throttle. i'm guessing there is no accelerator pump on the carb; disadvantage in combat when you need immediate power response to slamming the throttle open. completely solved a couple of decades later by fuel-injecting the DB601.
octane rating of your fuel?
i now appreciate how the DVII was reputed to be able to hang on the prop in a dogfight.
okay, what's your guess about when someone will start recreating the MercD-III?
thanks again willem, you are a prince of the realm. more please.
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Old 5 October 2009, 06:12 PM   #8 (permalink)
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W&B questions.

Willem,
Buck Tonges and I were wondering about the W&B, and CG range of the DVII. What did you guys use on your plane, and how does it fly?
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Old 6 October 2009, 04:37 AM   #9 (permalink)
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I also want to know how you hop into that cockpit so easily. I can't get my leg up high enough over the turtle deck!
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Old 6 October 2009, 10:52 AM   #10 (permalink)
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Willem,
Do you know the weight of the radiator and how much water it used?
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