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P-39 Airacobra / Global Quality Kits Build

Old 09-06-2007, 09:35 AM
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foosball_movie
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Default P-39 Airacobra / Global Quality Kits Build

Here we go again. My first warbird kit.

I bought a Global Quality Kits P-39 Airacobra Kit at a local swap meet a couple of weeks ago.

"How much?"
"$50"
"How about $30?"
"Can't let it go for less than $40."
"You drive a hard bargain. Done."

Wing Span: 40 1/2 inches
Wing Area: 297 sq. in.
Engine: .10-.15 two cycle

I'm not sure how old the kit is, but it appears to have been sitting around for a while. It states on the box, "FOR THOSE WHO KNOW VALUE".
Is Global Quality still in business?

I'm going to attempt to use Flite-Metal to cover the plane. I've attached the color scheme I'm going for.

Now the hard part....cleaning up my work area from my last build.
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Old 09-06-2007, 10:38 AM
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0z0
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Default RE: P-39 Airacobra / Global Quality Kits Build

Oh man! [8D] I bougth a Top Flite P-39 old red box kit for .40 to .60 engines (not the gold edition) this is an old kit too. I pretend install Century jet retracts custom made. It will be great if we share our building experience .

Regards.
Old 09-06-2007, 10:39 AM
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TLH101
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Default RE: P-39 Airacobra / Global Quality Kits Build

That French version is not a P-39
There were no "bare" metal P-39s
Old 09-06-2007, 10:47 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

Hi I got his kit and I'd like to build soon. I didn't like the wood, is not good bacause is hard and heavy. This plane is not for doing a big problem because look like basic but P-39 is a little pretty model.
Please, while you build post your pic.

Regards
Old 09-06-2007, 11:10 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

There were no "bare" metal P-39s
It's my model and I can cover it anyway I want! [:'(]

Besides, I found this in my book. Looks pretty naked to me.

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Old 09-06-2007, 08:57 PM
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fyredog
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Default RE: P-39 Airacobra / Global Quality Kits Build

So.....Like....Start building already!
Old 09-11-2007, 09:52 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

Spent the weekend cleaning my work area. What a disaster. But now I'm ready to go.

Initial impressions:

Decent wood. Some wood a little warped, but should straighten out easily.

Instructions are very limited with very few images. The plans are rolled, but they are printed on both sides! Makes no sense, especially since the first step calls for making the horizontal stab and vertical stab and they are printed on opposite sides. * A good habit that I started yesterday: Take all new plans to Kinkos for full size copies. Cost about $4 per side. Now I have an archived copy of this P39 and I can easily work on both the hor & vert stab at the same time. I prefer

Already found some variations in the dimensions on the plans and in the instructions.

Since I'll be covering the model in Flite-Metal, I'm trying to plan the plane so there are no holes/gaps in any of the surfaces.

It's a diminutive plane, much more so than I anticipated.

Need to load up on CA and get some spare balsa wood to fill the gaps in the stabilizers and I should be ready to begin tonight.
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Old 09-11-2007, 11:19 AM
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TLH101
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Default RE: P-39 Airacobra / Global Quality Kits Build

If you are planning to build from the copies, be sure to measure them against the originals. Both horizontal and vertical. Most copiers don't copy "exactly" 1:1, especially the large format copiers at Kinkos and other "quick copy" outlets. An 1/8 in the wrong place can create quite a problem on a small model.[&o]
Old 09-11-2007, 11:39 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

Thanks TLH.

Didn't even think about that. I'll be using the copies so I can keep the originals.
Old 09-11-2007, 06:27 PM
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Default RE: P-39 Airacobra / Global Quality Kits Build

I built one of these several years ago. I left the landing gear off and was planning on using it for some dogfighting, but that never happened. I powered mine with a Fox 15 Schnerule. Plane flies very well, nothing tricky about building or flying, but if it were me, I would stick a .20/25 in the nose and go burn some Nitro. Godo luck with the build.
Old 09-11-2007, 07:42 PM
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fyredog
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Default RE: P-39 Airacobra / Global Quality Kits Build

Yeah the copied Plans are a for sure loser, I am having that issue with a laser cutter guy that I sent copied plans to. Most of the wood is now scrap!
Old 09-13-2007, 04:45 PM
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topspeed200
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Default RE: P-39 Airacobra / Global Quality Kits Build

hello i have a P-39 airacobra and i dont have the bild book or smats email me them at ( kid_jack_thekid@yahoo.com )
Old 09-14-2007, 07:54 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

the french version is a p-400 extra exhaust stacks.this was the export version of the p-39.
one thing alot of builders forget when wood does not match plans is that paper shrinks and expands with humidity up to one inch in overall length on large sheets.wood does not react the same amount.
Old 09-14-2007, 10:27 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

I measured the copies of the plans and compared them to the original set and they are pretty, pretty close. So I went ahead with using the copies.

Horizontal & vertical stabs went together easily. I added several extra supports in the middle to help fill the space in preparation for the Flite-Metal.

I've laid out the fuselage side. The fuselage it quite warped. Hopefully it won't cause a problem.
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Old 09-18-2007, 09:17 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

Ok. Got most of the fuselage completed last night. Looks pretty straight. I misunderstood how the front triangle pieces were supposed to touch the middle triangle pieces. So there is a significant gap right where the firewall is located. I'll need to fill the gaps with some scrap balsa wood.

Having a problem uploaded images, but I'll get them up soon.
Old 09-18-2007, 09:48 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

Good work, I'll build mine soon and I'd like to know about the fly.
Old 09-18-2007, 10:23 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

Had to upload the images one at a time, but here they are:
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Old 09-18-2007, 02:55 PM
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Default RE: P-39 Airacobra / Global Quality Kits Build

on this size model weight will be very critical anything over 3 pounds ready to fly is going to be more than a hand full
Old 09-19-2007, 02:13 AM
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morwan
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Default RE: P-39 Airacobra / Global Quality Kits Build

Hello!
I have had this model several years ago. I will say that i would not mount the landing gear, They give the plane extra weight. And the plane is completely hopeles on the ground, unless you fly from asphalt or concrete. The wheels are to small for grass take off, and the nose wheel insatlation is difficult.

Another thing is that you are going to need more power than stated in the instruction. I started whit a OS 10 then a OS 15 and ended up whit a Super Tigre 29!
It was a verry fun plane to flu, fast and responssive on the controls. You will get a lott of attention on this plane

Link to my norwegian site for the Global p-39 http://www.wanviks.com/fly/Hangar/fly/P39/p391.htm

Her are som pictures from my flying whit the Global P-39
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Old 09-20-2007, 07:17 AM
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0z0
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Default RE: P-39 Airacobra / Global Quality Kits Build

Nice work man!
Hello all people in Bergen. I have good friends in Bergen, they are The Dubliner Pub owners. Very good friends of mine.

Best regards
Old 09-20-2007, 07:32 AM
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morwan
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Default RE: P-39 Airacobra / Global Quality Kits Build

Thank you, 0z0!
Have you also built this plane?
If i remeber i will say hallo from you to the people at The Dubliner, next time i visit them
Old 09-20-2007, 09:32 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

I will build the Top Flite P-39 Old red box (this is for .40 to .60 engine) I bought this old kit a few weeks ago in very good conditions . If you visit The Dubliner give my regards to Emil and Patricia Gessling from Roberto

Regards
Old 09-20-2007, 09:40 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

I have had this model several years ago.
Wow, morwan. You're plane looks almost exactly like the pictures on the box. Good job.

I will say that i would not mount the landing gear, They give the plane extra weight. And the plane is completely hopeles on the ground, unless you fly from asphalt or concrete. The wheels are to small for grass take off, and the nose wheel insatlation is difficult.
So are you suggesting no landing gear and hand-launching this plane? I fly off a grass field. I've hand launched my Wonder, but landings are systematically destroyed the belly of the plane.
Old 09-20-2007, 10:08 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

Hello!
I had a little work on the plane to get the right look
Yes i suggest hand launching the plane, if your grass field not like the best golf greens!

I converted my plane(after the pictures was taken) to a hand launching plane, and it worked fine for me. I made a little balsa grip under the wing near the CG an glued some sand paper around to get a good grip.
I also have a Sig Wonder and land on the belly without any problem.
Old 09-21-2007, 11:31 AM
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Default RE: P-39 Airacobra / Global Quality Kits Build

Continuing .....

Sheeted the top and bottom of the fuselage. Fairly simply, except that the manual and the plans are different in several places. I spent five minutes trying to find a particular piece of wood, just to find out that the plans use a piece of wood right in front of my face. I've essentially given up on the instruction manual when it comes to dimensions of wood pieces and I'm sticking with the plans.

I used the epoxy and heat-gun method to shore-up the inside of the fuselage before completing the sheeting.

Morwan, I need your help (or anyone else that has built this kit). I posted a picture of the instructions.

It states: Trim and fit 1/16" balsa sheet to fit between edge of fillet and fuselage sides. Glue in place.

They don't have a picture and I'm really not sure what they are talking about.

Also, where did they get the term "fillet"?
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