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Author Topic: Bell P-63F Kingcobra Air Racer  (Read 584 times)
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Sky9pilot
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« on: May 16, 2020, 10:35:26 PM »

I've always like the unusual look of the tall tail on the Bell P-63F Kingcobra.  I also wanted to do a different scheme and found this Air Racer scheme.  She apparently Raced in the Thompson at Cleveland and the Bendix Air Races and then in military marking at Reno.  She had a dark green and white scheme also.  But I'm going with the Gold and white and black scheme.  I found some Hallmark gold tissue so we'll see how this works. 

I built the box fuselage sides one on top of the other.  After they dried I sanded the outsides and then split them apart with a single bladed razor.  I then glued the tail together and worked towards the nose gluing the cross members.  I did this with the box frame inverted for the long flat section from the tail to the cockpit.  Once the box fuselage is done I'll add the formers outsid the box and then the stringers.  Here's a couple pics of the box frame fuselage and crossmembers.  Also a couple pics of the scheme I'm gonna use.
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Bell P-63F Kingcobra Air Racer
Bell P-63F Kingcobra Air Racer
Bell P-63F Kingcobra Air Racer
Bell P-63F Kingcobra Air Racer
Bell P-63F Kingcobra Air Racer
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Sky9pilot
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« Reply #1 on: May 19, 2020, 06:53:33 PM »

Made a little progress on this pseudo-dimer...with the shut in because of the pandemic  got the basic components done and just had to do a mockup.  I made the rudder so if needed it can be cut from the vertical stab and become free flapping rudder.  I used Walt Mooney's horizontal stab construction with the diagonal ribs and the 1/32"x 1/16" outer spars on top and bottom.  Didn't have any basswood but had some fairly hard craft shop 1/32" balsa and so stripped enough for spars one on top and the other on the bottom.

Goofy dropped by to lend a hand with construction...
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Re: Bell P-63F Kingcobra Air Racer
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Sky9pilot
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Bingo Fuel
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« Reply #2 on: May 21, 2020, 04:59:58 PM »

Nice Kingcobra. I remember a picture of that one on the cover of a American Aircraft Modeler magazine back in the late 60’s or 70’s. I don’t think it raced in that scheme. Was all natural metal in the 40’s when it raced in Cleveland. I think there was only one F model built. I am looking forward to the finished product.
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Sky9pilot
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« Reply #3 on: May 21, 2020, 08:51:01 PM »

Thanks Bingo,
What research I did I found that two "F" models were built.  One crashed and didn't servive.  One did make it to civilian hand post WWII.  I believe there were only four schemes for these birds.  Bare metal military, the gold, black and white, a white and green version and a very short time russian scheme.  The latest scheme is the silver that raced at Reno with a red stripe on the top of the wings.

Dug through the storage box and found two canopy plug that might work with some trimming.  Never throw those canopy plugs away!!!  Carved an intake for behind the canopy out of pink inslulation foam.  Sealing it with white glue and tissue.  Will give it at least one more sealing before covering.  Still have to see about fairing it into the fuselage. Should start covering in a couple days when the fiddly bits are completed.
Sky9pilot
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Re: Bell P-63F Kingcobra Air Racer
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Re: Bell P-63F Kingcobra Air Racer
Re: Bell P-63F Kingcobra Air Racer
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Sky9pilot
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flydean1
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« Reply #4 on: May 21, 2020, 10:18:20 PM »

Those things have giant fins.  Unless you have a lot of dihedral, that fin will roll you in every time.  Most successful "Iron Dogs" for rubber power have their stabs enlarged, and fins shrunk.  A free flapping rudder may do the trick.
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Sky9pilot
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« Reply #5 on: May 23, 2020, 02:12:37 PM »

flydean1...thanks for the input.  I was concerned about the size of the vertical stab also...that's the reason for the floppy rudder to hopefully avoid that issue.  I like aircraft with unusual empennages!   Roll Eyes Shocked Wink
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Walt
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« Reply #6 on: May 23, 2020, 10:40:04 PM »

What a great idea!  Can't wait to see it take shape.
Wally
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Don McLellan
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« Reply #7 on: May 24, 2020, 12:31:55 PM »

Nice work Sky9pilot.  Very interested in how the floppy rudder works.
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Sky9pilot
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« Reply #8 on: May 25, 2020, 09:01:49 PM »

Thanks fellas for the kind responses. 
Got some more work done on planking the nose back to the L.E. of the wing.  I used some scrap balsa from other builds to fill in the nose.  I have a tendancy to grip the nose a bit too tight when removing the noseplug.  So a bit of sheeting to protect from my gorilla grip when removing and replacing the noseplug! Embarrassed Cry 

I also carved and sanded the canopy plug and intake scoop.  I've used tissue and yellow carpenter's glue to seal the foam.  I still have some finish sanding and sealing to do before covering.

Just had to do another mockup.
Sky9pilot
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Re: Bell P-63F Kingcobra Air Racer
Re: Bell P-63F Kingcobra Air Racer
Re: Bell P-63F Kingcobra Air Racer
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Sky9pilot
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Sky9pilot
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« Reply #9 on: June 01, 2020, 05:52:47 PM »

A bit more done on the Kingcobra...I used Hallmark Gold and White tissue.  I added a stringer down the fuselage for the tissue break.  Applied the white first and when it dried I used some hobby acrylic white thinned with airbrush medium and brushed it on very lightly.  Gave it a  semi-opaque look.  I then applied the gold tissue wetted with alcohol.  Suprising strength of the metalic gold tissue.  The white was applied wet also but it wasn't as strong.   Then I used some black tissue for the icing strips along the leading edges of the wing.  Still have to finish the black and white stripes along the fuselage sides.  Then the wing will be mounted and the fuselage below the wing will be completed.  Still have to make a canopy and prop block and spinner. 
Sky9pilot
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Re: Bell P-63F Kingcobra Air Racer
Re: Bell P-63F Kingcobra Air Racer
Re: Bell P-63F Kingcobra Air Racer
Re: Bell P-63F Kingcobra Air Racer
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Sky9pilot
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Sky9pilot
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« Reply #10 on: June 02, 2020, 08:21:16 PM »

A bit more done I used black tissue for the nose and side stripes.  I made a paper pattern for the swoops on the nose and cut the tissue from the pattern.  I applied them with thinned white glue. Please excuse the messy work area.  Got lazy didn't clean up for the pics.
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Re: Bell P-63F Kingcobra Air Racer
Re: Bell P-63F Kingcobra Air Racer
Re: Bell P-63F Kingcobra Air Racer
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Sky9pilot
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Sky9pilot
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« Reply #11 on: July 29, 2020, 08:07:02 PM »

Sorry for the inactivity but came down with bronchitis and been battling this with various treatment from the doctor!  Hope to be back at building soon.
Sky9pilot
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Sky9pilot
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OZPAF
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« Reply #12 on: July 29, 2020, 08:30:22 PM »

All the best there Tom. You picked a pretty scheme although that green/white version looks interesting!

John
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Don McLellan
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« Reply #13 on: July 29, 2020, 08:43:38 PM »

Hope you're feeling better Tom.  Looking forward to seeing your model finished.
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Sky9pilot
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« Reply #14 on: August 01, 2020, 10:34:14 AM »

Thanks fellas. That wave of green on white is interesting OZPAF...   I hope to finish soon.  I'm on the mend and feeling better everyday.
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Sky9pilot
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