RE: 25% Cessna L-19/0-1 Bird Dog build  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: 25% Cessna L-19/0-1 Bird Dog build
Page: <<   < prev  7 8 [9] 10 11 12 13 14 15 16   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: 25% Cessna L-19/0-1 Bird Dog build - 4/2/2008 9:50:00 PM   
AIRPLANENUTS



Posts: 837
Joined: 7/21/2003
From: atlanta, GA, USA
Status: offline
Thanks for that info, Ken. I won't worry, then.

_____________________________

"Futaba gets it right the first time."

(in reply to khodges)
       Post #: 201

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/6/2008 11:48:48 PM   
RICMOD5634



Posts: 141
Joined: 8/26/2006
From: Fremont, MI, USA
Status: offline
Well guys I took the plung and joined to Club. When at Toledo Show went to PCK and bought the 1/5 Dawg and then to Vailly for the plans,cowl and gear and Ram for Nav. lights. Figured that was good to start, plus had spent my BD money. Can see I'm going to have a lot of questions once I start building, If you don't mind ?

Rich

Attachments
Click to see fullsize image.
Click for fullsize

(in reply to AIRPLANENUTS)
       Post #: 202

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/6/2008 11:52:26 PM   
RICMOD5634



Posts: 141
Joined: 8/26/2006
From: Fremont, MI, USA
Status: offline
If you don,t mind, will post progress pic's on my Dawg on your tread. Would questions be better as PM's as not to mess up your tread?

Rich

(in reply to RICMOD5634)
       Post #: 203

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/7/2008 12:18:02 AM   
khodges


 

Posts: 5091
Joined: 7/3/2003
From: newton, NC, USA
Status: offline
Welcome to "Dogpatch", Rich. Please post all you like here, questions and all. This way, anyone can chime in with advice. It will be interesting watching the 1/5 'Dawg frame up. The one thing that will be a big difference when Chic and I post, compared to yours, will be dimensions, so we need to stay aware of the two different scales. I don't think it will be a problem, as I think your plane builds exactly the same way as the 1/4 scale does. Posting pictures when you have a question will be a big help.

I have all my tail surfaces sheeted, and preliminary shape-sanding is done. While I was working today, it occurred to me that I need to figure out where I am in the area of potential finished weight. I'm shooting for 25 pounds; if I go over by a couple of pounds, I won't worry too much, but past 27, I'm going to worry a lot.

I took my fuse and set it on my scale; I put the engine and muffler in the cabin area, set the landing gear and wheels on top of that, piled all the servos (still in their boxes) in, added several battery packs, all the servo extensions, the nav lights (also in their packages),
the tail pieces are set on top of the cabin, and then I added four 1ft x 4ft sheets of 1/64 ply, and the cowl on top of it all. This all came out to a little over 19-1/2 pounds. I still have the wing assemblies and paint, fiberglass, primer, and interior detail weights to consider. It's gonna be close, and I'll probably go over my 25 pound target.

Sigh.........

Attachments
Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize


_____________________________

Club Saito #2, WACO Brotherhood #20. What other trouble can I get into?

(in reply to RICMOD5634)
       Post #: 204

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/7/2008 9:23:48 PM   
MEMPHISBELLE


 

Posts: 227
Joined: 2/7/2002
From: CHILLICOTHE, IL, USA
Status: offline
My birddog flew grat a 27lbs. I powered it with a u.s. 41 and was not lacking in power.

MEMPHISBELLE

(in reply to khodges)
       Post #: 205

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/8/2008 1:01:33 AM   
khodges


 

Posts: 5091
Joined: 7/3/2003
From: newton, NC, USA
Status: offline
Thanks, M'Belle, that's good to know. I won't worry so much, then, about building a balsa brick . I tend to build on the heavy side anyway, and my other models have flown well with a 'beer gut'. At 27 pounds with a US-41, 27-29 shouldn't be too bad with a G-45, then. Got any pics of yours?

**Whew** I feel better now.

_____________________________

Club Saito #2, WACO Brotherhood #20. What other trouble can I get into?

(in reply to MEMPHISBELLE)
       Post #: 206

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/9/2008 12:40:38 AM   
RICMOD5634



Posts: 141
Joined: 8/26/2006
From: Fremont, MI, USA
Status: offline
Hey Guy's, was wondering if you came across any kit parts that didn't match up with templates on the plans. If so, did you cut new ones on your own, or PCK supply new parts. Fuse Cabin Sides and Cabin Rib do not match drawings. Stretched out about 3/16.

This is going to be a challange to put togreather, but going to be a lot of fun.

Rich F 1/5

(in reply to khodges)
       Post #: 207

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/9/2008 2:14:46 AM   
redtail


 

Posts: 322
Joined: 10/14/2002
From: Alexandria, VA,
Status: offline
My parts as supplied by Precision Kit were all on the money except the landing gear plywood was a bit too short. I made another plywood part as indicated by the plans and the actual measurements taken by the partially framed fuse. All was well again. Welcome on board and enjoy the build. Chic

(in reply to RICMOD5634)
       Post #: 208

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/9/2008 3:37:35 AM   
khodges


 

Posts: 5091
Joined: 7/3/2003
From: newton, NC, USA
Status: offline
Rich, it may be that the plans themselves are off a tad, from the paper changing with humidity. You can't really build the fuse lying on the plans anyway, so 3/16 won't matter all that much. You could always have PCK cut another one, but their "master" may be that much different from your plans, and you'll get the same thing again. As long as the two fuse sides are exactly the same, you'll be fine.

The fuse build starts with laying both of the sides flat, and gluing the crutches to them. Then, with one side lying flat, former #3 is glued to it. You square the former and let it dry, then glue former #4 the same way. Then the other fuse side is glued to formers 3 and 4, also keeping them square to the sides. The crutches MUST be parallel to each other, or the fuse will have a twist. I have most of this posted on the first couple of pages here, but here's another look. When you get to the tail feathers and wings, it's a bit more like laying out a kit on the plans, but you still don't really build "ON" the plans like most kits. Using the plans as a guide, maintaining the dimensions called for, and above all, maintaining alignment from side to side and top to bottom, will keep the framework square.

Oh, and the doublers are glued to the formers before the formers are glued to the sides. Lots of little preliminary steps, and things have to be done in a certain order. Not having a manual makes these things a challenge; forgetting one thing can make retrofitting it a major headache. Feel free to ask all the questions you want here, redtail (Chic) and I will be happy to guide you, as will others who have built this bird.

1st and 2nd pic are my build, the 3rd pic is from Vailly's photo pack (you should get this if you don't have it)

Attachments
Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize


< Message edited by khodges -- 4/9/2008 3:47:07 AM >


_____________________________

Club Saito #2, WACO Brotherhood #20. What other trouble can I get into?

(in reply to RICMOD5634)
       Post #: 209

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/9/2008 3:58:01 AM   
khodges


 

Posts: 5091
Joined: 7/3/2003
From: newton, NC, USA
Status: offline
Chic, my L.G. plate was also a bit off, too, and I just re-cut it from stock I had on hand. My mods have also required re-cutting some pieces and altering the plans accordingly.

I found something for my tail strobe cover (but NOT in my wife's "medicine" cabinet ) I was actually looking for an ink pen to write with, and the "clicker" thing struck me as looking like the red Mars beacon cover, but it was clear (note 1st picture). It's very close to what I want, I think close enough for gov't work, anyway.

I also found a couple of small tubes at work; they have a rubber stopper and are used to send blood to the lab. The tube is round bottomed, and is 1/2" in diameter. I cut the bottom off one (they are plastic). It looks okay, but I think it's a tad too big. See 2nd and 3rd pics

Attachments
Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize


_____________________________

Club Saito #2, WACO Brotherhood #20. What other trouble can I get into?

(in reply to redtail)
       Post #: 210

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/9/2008 11:42:44 AM   
redtail


 

Posts: 322
Joined: 10/14/2002
From: Alexandria, VA,
Status: offline
Hummmm, if you decide to throw that plastic tube you cut off away, throw it into the postal system heading for Virginia. I'd like to give it a try. Your directions to Rich on starting the fuse are dead on helpful. That should give a very sound start to his build. Chic

(in reply to khodges)
       Post #: 211

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/9/2008 11:51:36 AM   
redtail


 

Posts: 322
Joined: 10/14/2002
From: Alexandria, VA,
Status: offline
Check that last posting, hault the pony express, the wife calmly walks over and said, "Is this what Ken is showing?" D#%@ near looks like what you photographed. And it sort of fits with a bit of mods of course. OK Ken what do you have up your sleeve next, your the one who is extending this build, with all your really great ideas. Please keep it up. By the way Ken, I committed a terrible sin the other day, I was looking at "Turbines and Jet Models". Chic

(in reply to redtail)
       Post #: 212

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/9/2008 5:45:22 PM   
RICMOD5634



Posts: 141
Joined: 8/26/2006
From: Fremont, MI, USA
Status: offline
Ken: I thought that I might not make a difference also, but them I went a step farther in inspection and found that the wing root rib dowel and screw holes would not line up with Cabin Rib and Side.

Attachments
Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize

(in reply to redtail)
       Post #: 213

RE: 25% Cessna L-19/0-1 Bird Dog build - 4/9/2008 10:53:52 PM   
khodges


 

Posts: 5091
Joined: 7/3/2003
From: newton, NC, USA
Status: offline
Chic, you know Jimmy Franklin stuck a jet engine under a WACO; you could be the first to stick one under a BirdDog . Talk about short take-off capability. Or, you could make your next build a turboprop 'Dog, they actually built two different versions for testing. What was it your wife found that was so similar? Maybe we should consider hiring her for parts procurement.



Rich, I'm not sure what to suggest. If the wing root ribs outside dimensions match the cabin sides where they fit, you could alway re-drill the holes. It looks like the forward notch on the root rib is also off, which is a bigger problem, as this is where the wing spar fits. Before making any "fixes", I'd give Larry at PCK a call and see what the problem is between your