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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 04-16-2013, 08:02 AM
  #926  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Happy to be home. i'm in fiberglass stage on my dog , doing the tail right now got my west system and 3/4 oz glass and the plastic angle strips. good to be back working on my Dawg.
Old 04-16-2013, 08:12 AM
  #927  
AIRPLANENUTS
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

I made these corrugations from harware store aluminum flashing, and a homemade stamp. I couldn't believe how much plastruct angle cost!
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Old 04-16-2013, 05:25 PM
  #928  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

I got lucky and found 8 packs for 12 bucks and 4 dollars shipping. got about 1/2 the tail finished. the angles really look good
Old 04-17-2013, 08:00 AM
  #929  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

just some updates...finished the tailwheel, could not find anything that I liked so a trip to the hardwear store and made my own. turned out ok..need to lay up a couple of cowls and play with making hatches..
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Old 04-17-2013, 09:47 AM
  #930  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Lookin' good! What a great deal on the Plastruct. Where did you find it that cheap?
Old 04-17-2013, 12:04 PM
  #931  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

off ebay. a person that had it for another project and didn't us it and was just getting rid of them.. right place & right time..
Old 04-18-2013, 04:34 PM
  #932  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Getting on with the wings. at the point to make up the mounts for the Aileron & flap servos. have a few idea's, was wanting to see what others came up with..my wings jigs are working great.
Old 04-28-2013, 02:55 PM
  #933  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Making progress on mine.. waiting on more wood.. LOL..takeing longer as I have been hand cutting every part
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Old 04-30-2013, 12:12 AM
  #934  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

anyone know the thickness of the sheets for the windscreens, ??
Old 04-30-2013, 03:42 PM
  #935  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

nice vidio of the birdhttp://www.youtube.com/watch?v=vV427haEN2k
Old 04-30-2013, 05:38 PM
  #936  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build


ORIGINAL: rigrandy1959

anyone know the thickness of the sheets for the windscreens, ??
Randy,

The 1/4 scale should use .020" thick PETG plastic. Should form around the front easily.

Gaines
Old 04-30-2013, 10:55 PM
  #937  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Thanks Gaines.. hope your builds are going good.. Vailly has 4 12 X 18 sheets for 21.00 . I looked on Widget Works and can get 12 X 18 .020 petg 8 pack for 23.00..think I will go that route..also a question as I think you as the scale master builder. I have a small homemade vac former 18" X 18". the side windows " see below picture" I was thinking of making a mold of the side windows with a small lip the thickness of the fuse and install them from the inside. the other way is I made some frames and was going to glue flat sheet to the back of the frames and install from the outside, what do you think, ? ....also on the tailwheel I made, the control horn is cheap plastic and has slop, any idea on making a metal one ??.. I have the cockpit kit but was going to wait intill a couple of flights before I spend the time to detail out to cabin.
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Old 05-09-2013, 07:05 AM
  #938  
fred123
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

I continue to make slow progress on the Dog. Have started glassing the control surfaces prior to installing the corrugations. I mixed the finishing epoxy with 50% alcohol and painted it on the glass. Much better method than using full strength and skimming off the excess with a credit card.
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Old 05-09-2013, 10:43 AM
  #939  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build


ORIGINAL: rigrandy1959

Thanks Gaines.. hope your builds are going good.. Vailly has 4 12 X 18 sheets for 21.00 . I looked on Widget Works and can get 12 X 18 .020 petg 8 pack for 23.00..think I will go that route..also a question as I think you as the scale master builder. I have a small homemade vac former 18'' X 18''. the side windows '' see below picture'' I was thinking of making a mold of the side windows with a small lip the thickness of the fuse and install them from the inside. the other way is I made some frames and was going to glue flat sheet to the back of the frames and install from the outside, what do you think, ? ....also on the tailwheel I made, the control horn is cheap plastic and has slop, any idea on making a metal one ??.. I have the cockpit kit but was going to wait intill a couple of flights before I spend the time to detail out to cabin.
Randy,

You can do a mold and pulls some of the side windows but I would just use the frame and install the flat plastic with RC56. Works well.

The tailwheel tiller can easily be replaced with a proper sized wheel collar soldered to a short length of brass bar. Drill some holes for the pull-pull cable and you have very stiff arm.
Old 05-09-2013, 12:25 PM
  #940  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

the wheel collar idea is the fix.. thanks.. will clean up the frames and seal them for paint..thanks....Fred123 i found it takes a bunch of the corrugations to do the bird,, i think i ended up getting like 16 packs of them.. 10 to a pack.but well worth it for the look..got mine off ebay at a VERY nice price.. i got back here to Saudi yesterday so my build is off intill i get home in 6 weeks... your Dogg is looking very nice..
I finished the wing sheeting & top of the fuse. just have to glass and install the corrugations on the flaps.. and lay up a couple of cowls and play with makeing hatches as my batterys will mount on each side of the motor mount..and speed control below for the airflow..
Old 05-09-2013, 03:56 PM
  #941  
fred123
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

You were very lucky. I bought 15 packs that cost $84. I made my CP floorremovable and will install batteries between the floor and the landind gear 1/2 in plywood mount. Somewhere in an earlier post, I seem to remember that you are going electric. If so, your batteries are alot bigger than mine...
Old 05-09-2013, 04:42 PM
  #942  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

the batterys i will start out with are 2 6 cell 5000ma packs.. thinking i will need the weight up front so planing on 1 pack on each side of the motor box..
Old 05-09-2013, 05:00 PM
  #943  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

you will need the nose weight but not to much as long as the tail is built light...from experience use quite a bit of expo on the rudder as it is VERY responsive...especially on take-off
Old 05-10-2013, 07:23 AM
  #944  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

thanks for the heads up on the rudder..i built the tail as per plans after all done they sure felt heavy after the sheeting ,,glassing and prime & paint..but it is a big bird..
Old 05-10-2013, 07:33 AM
  #945  
fred123
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Very hard to build this tail light. I started to use 3/32 sheeting, but couldn't find a good source of 4' pieces. Also, lots of block balsa at the tail end on the tail wheel and the filler under the vertical fin.
Old 05-10-2013, 08:48 AM
  #946  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

Yes, If I was building mine again I would use 1/16th on the tail and use carbon fiber on the vertical fin tail post and then glass it.
Also hollow out any blocks of balsa that I could.
People don't realize how serious this tail heavy thing can become.
I had a light airplane till I balanced it.
Old 05-10-2013, 09:02 AM
  #947  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build



I have not glued anything on yet and have been thinking about cutting foam cores and useing Sq carbon for spars and lite sheeting plus the glass for the tail parts. the fin and rudder are lite , but my eleavtor is really heavy, i may do joust it. i know i could save 1/2 the current weight..i have everything to do it. just want to see

Old 05-10-2013, 02:02 PM
  #948  
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

rigrandy...if it helps as a reference point..mine finished at 28lbs with a G-62 motor and it handles this weight just fine
Old 05-10-2013, 03:34 PM
  #949  
rigrandy1959
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

good to know..the rimfire 65cc should pull her good... kind of still wanting to do another elevator that way and see..could build it in a day
Old 05-12-2013, 05:54 PM
  #950  
fred123
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Default RE: 25% Cessna L-19/0-1 Bird Dog build

I have finished glassing and sanding all my control surfaces and am ready to start putting on the corrugations. What kind of glue did you use. Med, thick or thin CA or other. Any special tricks?

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