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RE: Aviatik DI build - 9/5/2012 3:59 AM   
Flying Fox


 

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From: Kitchener, ON, CANADA
Status: offline 		Goodluck Martin, wair fior the wind to be straight on down the runway then give her.
I'm not familiar with all the large scale gasser 'stuff' but learning from you and others on the forum. I do agree with you on the safety aspects though. Looking good!
Cheers,
Bri


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RE: Aviatik DI build - 9/5/2012 1:50 PM   
LT Pierce



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From: Wasaga Beach, ON, CANADA
Status: offline 		Hello Martin:

Good luck, with your test flights, too bad you do not live closer.
 The 400 field is Omni for wind direction.
We will be in Kitchner this week-end with the Messenger M-38.
 Regards Larry



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RE: Aviatik DI build - 9/5/2012 11:38 PM   
Nieuport nut


 

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From: Kingston, ON, CANADA
Status: offline 		Southerly winds at 23kph again >sigh<

Martin

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RE: Aviatik DI build - 9/13/2012 12:31 AM   
geezeraviation


 

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Status: offline 		I was fortunate enough to meet Martin and see his model at Rhinebeck this past weekend and I gotta tell you guys the pictures here dont do it justice, its absolutely gorgeous.
Doc

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Happy landings, Doc Hou Tx
The second rule of modeling is there is no such thing as an insignificant savings in weight

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RE: Aviatik DI build - 9/13/2012 2:24 AM   
N11


 

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Status: offline 		Second That Doc!!! Seen it up close Beautiful Model!

Jim

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RE: Aviatik DI build - 9/13/2012 3:47 AM   
Nieuport nut


 

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Status: offline 		Thanks guys. It was a great weekend, in spite of the Saturday storm..

Hoping to test fly tomorrow afternoon. My test pilot is going away for the weekend so it's Thursday, or next week. Fingers crossed for the wind.

Martin

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RE: Aviatik DI build - 9/14/2012 4:09 AM   
Nieuport nut


 

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From: Kingston, ON, CANADA
Status: offline 		SUCCESS!!!

I did a test flight this evening and everything went well. We did a couple of power run-ups, range check, slight radio programming adjustments and then I handed the box over to Rolly Siemensen, a club member who has been flying since the 60s. Rolly does this for a lot of our club - test flights are no place for egos.

I have a couple of videos, but only one is worth downloading. (I am loading it on YouTube tonight.) You will see that the tail lifts quite easily with the application of power. This was reassuring as it confirmed that the CG must be close. Takeoff was straightforward and climb out at 1/2 throttle was good. A little up trim was needed but other than that, it flew fine. I got the transmitter a couple of minutes into the flight and found that it was very neutral laterally - it needed opposite aileron and rudder to come out of turns. The elevator is very powerful and only a very small amount was needed. It is a draggy plane that needs more power than I had thought, (I still have lots of reserve) The landing approach started WAY out, (I will have to do some "perceptual adjusting" for this size of plane), but touched down smoothly. Thanks Roll!

Overall, I felt a little like I was "balancing on a ball", but never like I was going to "fall off". The elevator sensitivity was surprising. While it is quite large, it is on a long tail moment which usually smooths things out, (think about pattern planes) . Normally, I would suspect a CG too far aft, but it's at 25% of MAC, and it's easy to lift the tail taxiing. I think it will get some expo to soften it around neutral and I'll dial down the throws. I think I'll also increase the aileron differential and see if that improves the roll rate.

I checked the head temp on landing. Now, it had been at low throttle during the approach and landing, and it took about a minute for me to get a reading. however, it read 188C with suggests that I'm right in the middle of the ZDZ recommended 180-210C.

After winning the "Spirit of Rhinebeck" award last weekend, (and a 1/3 scale Balsa USA Fokker DrI now in the basement), this caps off a great week.

Martin

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RE: Aviatik DI build - 9/14/2012 8:56 AM   
Teus



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From: Friesland, NETHERLANDS
Status: offline 		Congratulations Martin

Both with your maiden flight and your award at Rhinebeck.

Looking forward to the video when uploaded.

About your elevator controls; I also use expo to smooth out the controls on my planes but I don't dial the controls back when too sensitive. I use the max up elevator to hold the tail down when taxiing and during landing to prevent a flip over. It's sometime easy to have max elevator deflection.

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RE: Aviatik DI build - 9/14/2012 12:29 PM   
Nieuport nut


 

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Status: offline 		http://www.youtube.com/my_videos_edit?ns=1&video_id=OHqNdWELZoc



Thanks Teus. Yes, just using exponential would allow full deflection for ground handling purposes. By the way, the ground handling is very good - short, wide gear fairly far forward.

Martin

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RE: Aviatik DI build - 9/14/2012 12:37 PM   
geezeraviation


 

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Status: offline 		Martin, well done on the maiden, glad to hear all went well and the model flies gently.
Doc

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The second rule of modeling is there is no such thing as an insignificant savings in weight

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RE: Aviatik DI build - 9/14/2012 12:49 PM   
Nieuport nut


 

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Status: offline 		OK. Video is up but I don't get it with a search, so you'll have to just click the link above.

Thanks Doc. I can't say it flies gently yet, but not a problem. I have high hopes for the expo on the elevator based on my experience with my Dewoitine 501 some years ago.

Martin

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RE: Aviatik DI build - 9/14/2012 1:24 PM   
Teus



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From: Friesland, NETHERLANDS
Status: offline 		The link don't work for me Martin but I found the video

She looks great in the air.



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RE: Aviatik DI build - 9/14/2012 1:38 PM   
abufletcher



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From: Zentsuji, JAPAN
Status: offline 		Beautiful take-off and landing! Very well done. But "the team" at the field there needs some education on maiden-flight protocols. First, the "photo ops" need to be separated from the actual maiden. I was shocked to see that one guy out there taking photos while the pilots waits with the engine running for him to finish! Second rule, for videographers, keep the camera on the dang model! Don't the dogs or the pits or the windsock. And don't stand way back in the cheap seats.

But again Congrats on a amazing model...successfully maidened!



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RE: Aviatik DI build - 9/14/2012 1:43 PM   
Nieuport nut


 

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Status: offline 		Gosh darn, Teus, how did you do that?
I tried using YouTube's embed feature and all I got was the url and picture specifics, (ie a line of text), when I tried to post it here.
Curious as to your inability to make the link work, (it works for me), as well as your ability to find it on YouTube! I couldn't.

Don, it was the wife of a club member who was videoing. Hopefully I'll be getting some better video and still soon. As for photo ops - I have a ton of still from this build so that's not may orientation so much - sorry! The landing was every bit as good as the take off which is why Rolly always gets my "more complicated" test flights.

Martin

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RE: Aviatik DI build - 9/14/2012 2:29 PM   
gabriel voisin


 

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Status: offline 		Martin, really beautiful....... it's an amazing model.

Greetinngs Matz

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RE: Aviatik DI build - 9/14/2012 3:01 PM   
Flying Fox


 

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From: Kitchener, ON, CANADA
Status: offline 		Fantastic Martin - so happy for you!
Congratulations for winning the "Spirit of Rhinebeck" award last weekend, and more so for the very successful maiden flight of your Aviatic! It's always gratifyting to see all one's hard work and effort pay off nicely with a successful first flight. Now you can start breathing again and simply enjoy flying.
Cheers,
Bri



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RE: Aviatik DI build - 9/14/2012 3:44 PM   
LADISLAV


 

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Status: offline 		Congratulation Martin. Not electric, but the sound makes up for it.
Laddie.

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RE: Aviatik DI build - 9/14/2012 3:54 PM   
abufletcher



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From: Zentsuji, JAPAN
Status: offline 		Martin, while I'd love to see some well-done stills of the finished model, what I was trying to say is once the engine is running it's time for the photographers to get out of the way...or rather to "take their positions" so that they can take the best possible shots without in any way interfering with the flying.

BTW, more and more I like the idea of having someone else do the maiden flights of my special scale models. I'm just too much of a nervous wreck to do a decent job as a pilot.

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RE: Aviatik DI build - 9/14/2012 4:05 PM   
Nieuport nut


 

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Status: offline 		Jim Murdoch sent me some photos including takeoff, low pass and landing shots.

Martin

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RE: Aviatik DI build - 9/14/2012 4:19 PM   
abufletcher



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From: Zentsuji, JAPAN
Status: offline 		Well, I have to admit I REALLY like that second shot with the prop spinning...and that's the very one I was complaining about! I guess it was worth the brief wait.

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RE: Aviatik DI build - 9/14/2012 4:38 PM   
LT Pierce



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From: Wasaga Beach, ON, CANADA
Status: offline 		Hello Martin:

Well done all around, excellent test flight..
What's next?


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RE: Aviatik DI build - 9/14/2012 5:57 PM   
Teus



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quote:

ORIGINAL: Nieuport nut

Gosh darn, Teus, how did you do that?
I tried using YouTube's embed feature and all I got was the url and picture specifics, (ie a line of text), when I tried to post it here.
Curious as to your inability to make the link work, (it works for me), as well as your ability to find it on YouTube! I couldn't.



Martin, when I click your link it will redirect me to my own youtube upload page because there is "my_videos_edit" in the URL, so youtube thinks I want to upload a video. I found your video by searching the video id. (OHqNdWELZoc found in your link) with youtube search. After that it's easy. Copy the URL and past it between the youtube tags: [youtube] here your url [/youtube].

If you quote my message with the video you see what I mean.

Many happy flights Martin,

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RE: Aviatik DI build - 9/14/2012 6:12 PM   
udet1918



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quote:

ORIGINAL: Nieuport nut

Jim Murdoch sent me some photos including takeoff, low pass and landing shots.

Martin

I love it when a plan comes together...Well done!

Ron

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RE: Aviatik DI build - 9/15/2012 3:37 PM   
Nieuport nut


 

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From: Kingston, ON, CANADA
Status: offline 		Laddie, I went with a proper canister exhaust after seeing Keith Zimmerley's DH-4 several years ago and being impressed with the sound. There is enough electric flier in me to NOT want the loud bark of so many gas "mufflers".

Larry, I traded in my BUSA certificate for a DrI, but I may try a more conveniently sized 1/4 scale model first - I like building this size. I also have a set of Teus' turnbuckles and I'd like to use them next.

Thanks Teus. I think I have it figured out now.

I am pleased with how well all the detail has stayed with the plane. Nothing has shaken loose. In fact all the rigging is still solid. I was sure I would forget something as this is my first gas plane, but so far nothing has let go. I still have to open up the radio compartment but have my fingers crossed. I'm sure that the ZDZ90 has something to do with this as it is a very smooth running engine. That is much of the reason I chose it.

Martin

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RE: Aviatik DI build - 9/19/2012 6:45 PM   
Nieuport nut


 

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Status: offline 		I got some more photos from Dave Fasken, (a club member). Looking forward to getting out this weekend.

Martin

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