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F4u Corsair build cookup? (Read 23651 times)
Reply #66 - Jan 26th, 2016 at 11:22am

Sky9pilot   Offline
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Thanks Bob,
I'm planning on using some acrylic craft paint, thinned a bit with airbrush medium.  I'm going to try to fog on some Chrystal Clear first to seal the tissue a bit.

I was reading an old article in Flying Models of Dave Rees' A-10.  He said he used blue foam to carve the canopy plug and the heat from the plastic had no adverse effect on the foam.  Just tended to seal the foam and left a nice smooth finish.  Guess I'll have to try that on this Corsair.  It's a small plug so I won't be wasting a big sheet of plastic for the canopy.  We'll see how that works.

Sky9pilot
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #65 - Jan 26th, 2016 at 7:42am

bigrip74   Offline
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What did l do this time!
Austin, Texas

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Tom, she is coming along good. How are you going to add the yellow on the nose?

Bob
 

IF IT AINT BROKE DONT FIX IT!
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Reply #64 - Jan 26th, 2016 at 12:24am

Sky9pilot   Offline
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Colonel...nope! Forgot about ironing it.  Next time!
Sky9pilot
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #63 - Jan 25th, 2016 at 9:59pm

Colonel Manfred von Holstein   Offline
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Did you iron the tissue after pre-shrinking?
 

3 rules of Free Flight: Keep it light, don't build heavy, and it shouldn't weigh much.
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Reply #62 - Jan 25th, 2016 at 8:37pm

NcGunny   Offline
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NY

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Nice looking bird Sky! Not sure why but Corsairs always remind me of a knockoff of a Stuka. Never researched it but I wonder if thats where the idea come from to build it?
 
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Reply #61 - Jan 25th, 2016 at 6:18pm

Sky9pilot   Offline
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Preshrank the tissue for the vertical and horizontal stabs, twice with straight Isopropyl Alcohol to get the shrinking pretty much taken care of.  Then covered them.  Came out ok but I do like the tighter tissue look.  But I didn't want to take the chance of a "banana/potato chip" horizontal stab happening.  This one turned out very flat and hopefully will not be inclined to warp!

Added some panel lines with a fine point Sharpie marker and a strip of cereal box cardboard as a straight line.  Worked well even wrapped around the fuselage for the vertical lines there.  Still have to make the noseblock, and paint the nose of the cowling yellow and add the white markings.  Going for this scheme.

Sky9pilot
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #60 - Jan 22nd, 2016 at 10:34pm

Sky9pilot   Offline
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Well, after looking at the wing in relation to the thrust line, and upon the advice of several on HPA I increased the dihedral on the wing to raise the tips to the bottom of the canopy rails. 

I also got the fuselage covered today.  Was able to cover the whole fuselage with just two strips of tissue.  One for each side.   I applied it wet with straight Isopropyl Alcohol and gluestick.  I like to cover the fuselage with the grain running vertically on the side of the fuselage.  Seems to help the tissue shrink tightly over the stringers and not sink between the stringers.

The wing is covered with the grain of the tissue running from root to tip.  After the wing was covered top and bottom, starting with the bottom.  I wet it down and pinned the outer panels down and fixed in 1/16" washout in the tip trailing.

Sky9pilot
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #59 - Jan 22nd, 2016 at 11:45am

Snaky Stringer   Offline

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The Drela Corsair is very pretty and very tempting. In principle the Comet wing is actually easier to build, but I suspect rather flimsy if the thing is meant to fly, but then again the video on youtube from Widdog seems to show a very standard looking Corsair flying beautifully.
https://www.youtube.com/watch?v=vQMSgEW2LT4&index=9&list=LLtnz8mGHnoaw7lVBcKRe1V...
 
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Reply #58 - Jan 19th, 2016 at 12:28pm

Sky9pilot   Offline
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It was in the plan PDF as pages 2&3.  Not sure where I downloaded it.  Might have been HPA Plans Gallery. PM with your email and I'll send you what I have.

Did some checking and it is at Hippocketaeronautics in the builders plan gallery.  Mark Drela F-4U-1 Corsair. Has all three pages, plan and Magazine article in next two pages.
Tom
« Last Edit: Jan 19th, 2016 at 2:01pm by Sky9pilot »  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #57 - Jan 19th, 2016 at 2:45am

staubkorb   Offline
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Tom,
do you have the article to the Drela  plan?
 

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(with a bit of rc thrown in for giggles)

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Reply #56 - Jan 19th, 2016 at 1:40am

Sky9pilot   Offline
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Kelso, WA 98626 USA

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Bob,
Those pictures are deceptive at that point.  I did cover the wing first before fitting it to the fuselage.  In the one time I did fit the wing to the fuselage before covering I used strips of 1/32" to butt up to the fuselage as tissue anchors.  But that was still a bear to cover.  So I don't recommend attaching the wing before covering.

Tom
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #55 - Jan 18th, 2016 at 11:12pm

bigrip74   Offline
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What did l do this time!
Austin, Texas

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Tom, I noticed that you attached the wing before covering with tissue. Something Ive never done, how hard is this?

bob
 

IF IT AINT BROKE DONT FIX IT!
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Reply #54 - Jan 18th, 2016 at 10:21pm

Sky9pilot   Offline
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Kelso, WA 98626 USA

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Bob,
The Comet wing was much easier to build.  In fact I have a build thread on the Comet Corsair here:Click Here I'd do the canopy a bit different if I built another Comet F4U. 

Sky9pilot
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #53 - Jan 18th, 2016 at 8:46pm

bigrip74   Offline
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What did l do this time!
Austin, Texas

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Tom, after looking at your F4U wing and that spar. OUCH! I may have bitten off some work on this Corsair cookup.  Cheesy So more review of the Comet plans are in order.

Nice work BTW.
 

IF IT AINT BROKE DONT FIX IT!
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Reply #52 - Jan 18th, 2016 at 7:57pm

pb_guy   Offline
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Youbou, BC, Vancouver Island

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Looks nice. Do those bones weigh about 5 grams?
ian
 
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