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25% Cessna L-19/0-1 Bird Dog build

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25% Cessna L-19/0-1 Bird Dog build

Old 01-15-2012, 08:57 AM
  #776  
Pelle Gris
 
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Here is the Excel spreadsheet I have developed. I use this to get a quick overview over the size and weight of a potential project.
It´s filled out with the data from my current project, but you can easily enter your own data in the gray boxes.

The full size data I normally find via Google.
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Mk26844.xls (28.0 KB, 113 views)
Old 01-15-2012, 11:09 AM
  #777  
smoothride
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Pelle,

That's a nice looking Tri-Pacer! I like the 1/3 scale models quite a bit, but don't want the airplane to be too big to fit in the car or house (neither does my wife). The aesthetics of the model are wonderful! Thanks for the spreadsheet, it looks pretty useful!

Take Care,

Matt

Old 01-29-2012, 05:05 PM
  #778  
smoothride
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Hi all,

Is there a rough cost for completing a 1/4 scale L-19 + engine + electronics+ other hardwarethat anyone can think of off the top of their head?

Any cost pitfalls that snuck up on you while completing the model?

What is the most cost effective engine for the model?

Thanks for any inputs!

Best Regards,

Matt
Old 01-29-2012, 06:45 PM
  #779  
gblas777
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

i have about $1200. into mine..G-62 engine,spektrum radio with 7 servos, and full lighting kit....no suprises
Old 02-02-2012, 11:31 AM
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smoothride
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Default RE: 25% Cessna L-19/0-1 Bird Dog build



gblas,

Thanks for the infoProbably won't be getting everything at once; that's agood chunk of change.

Matt

Old 03-22-2012, 04:22 PM
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scaleman57
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Hey guys I bought a 1\5 scale Vailly aviation Bird Dog herenon RC Universe its a beauty. Im afraid to fly the thing, there are no wing spars or wing tubes to support thewings, the two wings bolt into the top of the fuse thats it . Do the wing struts support the wings by themselves, I cant believe that would be adaquate enough to hold this bird together. Am I heading for an inflight break up or do you think Ill be safe flying this machine.
Old 03-22-2012, 05:46 PM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build


ORIGINAL: scaleman57

Hey guys I bought a 1\5 scale Vailly aviation Bird Dog herenon RC Universe its a beauty. Im afraid to fly the thing, there are no wing spars or wing tubes to support thewings, the two wings bolt into the top of the fuse thats it . Do the wing struts support the wings by themselves, I cant believe that would be adaquate enough to hold this bird together. Am I heading for an inflight break up or do you think Ill be safe flying this machine.
The struts on Vailly's L-19 are functional. If the airplane was built according to the plans then the struts will support the wing loads. Go fly it!
Old 03-25-2012, 02:51 PM
  #783  
RICMOD5634
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

I have the 1/5 l-19 by Roy and it flyes great. As long as it was built to spec's and the Struts are built right and everything is secure the wings will stay on, the struts are functional and if they fail you will need a plastic bag to take it home in. make sure all screws are tight, and then check them again. And the hold downs are solid. But remember it is not a sport plane or pedal to the medal flyer. Fly it scale and it will hold. Wing overs, loops, rolls and inverted are all possible. Cut back on the throttle on the down side of manovers.
Rich
Old 03-25-2012, 04:41 PM
  #784  
scaleman57
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

THANKS guys thats what I needed to know. Im gonna put this bird up in the air in the next week. now I can fly it with out worrying abot the thing comming apart in the air.
Old 03-26-2012, 11:43 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Best of luck on you maiden flight. Let us know how thing go.
Rich
Old 03-26-2012, 01:26 PM
  #786  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Thanks Rich Ill report on how this baby flies Im hoping for the best, Ill post some picks its done in the Armycolors  with all the placards on it.
Old 04-30-2012, 06:06 AM
  #787  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

My Birddog is ready to fly today weather permitting. This is modeled after one I flew in in Vietnam as an observer 1971. This is a replica of one that was destroyed while attempting to land. A gust from a thunder storm pushed it into the concertina wire. Started the build in October.
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Old 05-03-2012, 07:41 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build



Maiden flight attempt. She wanted to fly to soon. I didn't keep the nose down long enough slight quartering crosswind right wing came up left wing stalled. I got It level landed hard on left gear. Bent the gear no other damage. I think I could have fed in more power and flew it out of the stall if I had a little more runaway.
Old 05-04-2012, 04:16 PM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

She's a beauty, Bill! You're a fast builder. What finish & engine did you use?

Rick
Old 05-05-2012, 06:15 PM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build


It's a long winter lots of time to build. She has a OS max 55 under the hood. I attempted a take off the other day she wanted to fly before I got the air speed I needed got on the ground ok. Bent one landing gear. It is fixed and waiting for a better day.
Old 05-06-2012, 04:44 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

[youtube]http://www.youtube.com/watch?v=AfdOSF_lG0I&feature=youtube_gdata_player[/youtube]
Old 05-06-2012, 06:52 AM
  #792  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build



This is the L19 birddog the that my model is replicating. Caught a wheel in the concertina wire when a gust f wind pushed it while landing.
Old 05-06-2012, 07:27 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build


ORIGINAL: swift bill

[youtube]http://www.youtube.com/watch?v=AfdOSF_lG0I&feature=youtube_gdata_player[/youtube]
Rough takeoff attempt but a great save!!! It acted just like my buddies EasyTiger ARF Bird Dog and my scratch built 1/3 scale. Because of the problem my buddy had with his ARF, I installed a rate gyro on the rudder of my 1/3 scale. I stubborn and made 2-3 attempts to take off without the installed rate Gyro turned on. I was all over the field and headed for disaster. I turned on the gyro and the airplane took off like it was on rails. Just something about the placement of the gear that makes the Bird Dog want to ground loop. And it will not tell you which way it is going to pull. My "old" thumbs just weren't fast enough to keep it under control. The gyro is able to dampen the erratic behavior.

I also found that about 10-15 degrees of flaps help smooth out the take off as well. At full throttle for takeoff the flaps tend to keep the tail on the ground and it just takes off from the tail down position.

The link below shows how tame the takeoffs are now. The first landing.....not so good

I hope this helps.

Gaines

[youtube]http://www.youtube.com/watch?v=2LHZt-bOBI0[/youtube]


Old 05-06-2012, 07:49 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Gaines
Thank you for the information. I will try flaps next time on a wind less day. Tell me more about the gyro.
Old 05-06-2012, 08:29 AM
  #795  
swift bill
 
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

The finish is 3/4 oz glass epoxy resin warbirds paint. Corrugations on the ailerons are plastruck. I ran out of that very expensive materiel so I cut spruce strips and sanded them all. All glue rivets and resin panel lines. Full cockpit. OS 55 for power weight is just over 30 pounds. Below photo of 0-12282 taken at Phu Cat central highlands RVN

Old 05-06-2012, 10:26 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build



OS GT55 easy starting smooth idle. I like it.
Old 05-06-2012, 10:38 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Took this shot 40 years ago

Old 05-06-2012, 11:18 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build


ORIGINAL: swift bill

Gaines
Thank you for the information. I will try flaps next time on a wind less day. Tell me more about the gyro.
The gyro I am using is an older model JR G500A. I think both JR and Futaba sells and rate gyro. It was designed for airplanes and works very well. I can turn it off and on from a seperate channel. There has a been a lot of discussion here on RCU about using a rate gyro on the rudder. Here is one link I spent some time on before trying the gyro.

http://www.rcuniverse.com/forum/m_60..._1/key_/tm.htm

Gaines
Old 05-06-2012, 06:48 PM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Is this plane still around? I would like to purchase one already finished and flown. Thanks!
Old 05-07-2012, 03:19 AM
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Default RE: 25% Cessna L-19/0-1 Bird Dog build


ORIGINAL: rcmichael

Is this plane still around? I would like to purchase one already finished and flown. Thanks!
Which plane are your asking about?

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