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Very Hot Topic (More than 25 Replies) Dumas Aeronca Champ (Read 609 times)
Sky9pilot
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Stick & Tissue

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Re: Dumas Aeronca Champ
Reply #48 - Jun 28th, 2022 at 1:06pm
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I've had that problem before...that's why I tend to hord scrap balsa from any previous kits or builds.  A 1.5" piece of balsa may allow me to scarf cut a trailing edge or leading edge to make up for one of my many cutting errors.  I may even laminate and sand a piece to make the needed balsa piece to fit or correct an error so I write all this to say, "Check all your options before just living with it!"  Sometimes the "Just living with it" pops up again when it comes to trimming her for flight!
  

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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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A26 Invader
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Re: Dumas Aeronca Champ
Reply #47 - Jun 28th, 2022 at 10:49am
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Started on the main wing.  One slight error that will never be noticed once it's done, is that I cut the trailing edge of the left wing about 1/32" shorter than the right wing.  It's only noticeable because I can't center the left wing rib directly over the plan like I normally do.  It's slightly bothering me but I'm going with it because I don't have enough trailing edge stock to make another one.  I know it won't hurt anything so I'll try not to stress too much about it.  Anyway here it is. 
  

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thymekiller
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Re: Dumas Aeronca Champ
Reply #46 - Jun 27th, 2022 at 5:16pm
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I really like the magnets in the nose.  I like that method. I try to use it also for main wing mounts.
Your tissue came out nice.
  

",,,The road goes on forever, and the party never ends..."
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Re: Dumas Aeronca Champ
Reply #45 - Jun 26th, 2022 at 11:52am
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I replaced the prop that came with the kit for a Peck Polymers prop (it's slightly larger in diameter).  Too big?

The wheels look a little smallish but they are what came in the box so I slid them on for a photo op.
« Last Edit: yesterday at 12:03pm by BigDawg »  

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A26 Invader
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Re: Dumas Aeronca Champ
Reply #44 - Jun 26th, 2022 at 7:25am
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Tail feathers installed.  As discussed, the stab is tacked to allow future adjustments if required.

Additionally, I did in fact decide to add the shim to the bottom rear of the horizontal stabilizer.  The reason being, when I checked with my laser level, the wing/stab were both at 0 degrees incidence.

Also airbrushed a dusting coat of Vallejo medium yellow.  Wrinkled the tissue some but we'll see once it's fully cured.
« Last Edit: Jun 26th, 2022 at 10:33am by A26 Invader »  

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A26 Invader
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Re: Dumas Aeronca Champ
Reply #43 - Jun 25th, 2022 at 9:51pm
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After a little fiddling got the nose magnets and matching cowl magnets flush mounted. 

To mark the point for the magnets on the cowl I could have measured, but instead what did was I painted the ones mounted in the fuselage then I put the cowl in place to transfer the markings.  You can see some residual paint in the cowl but it will be covered up during final finishing. 

Works like a Champ!
« Last Edit: Jun 26th, 2022 at 5:58am by A26 Invader »  

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A26 Invader
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Re: Dumas Aeronca Champ
Reply #42 - Jun 24th, 2022 at 6:27pm
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Took a while but I finally got the fueslage covered.  I covered in smaller sections so I could avoid wrinkles as much as possible.  Here she is with two coats of fresh dope (on cure).

Once cured up I'll cut out all the appropriate openings and then I'm thinking I might airbrush on a light coat of yellow.
  

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Sky9pilot
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Re: Dumas Aeronca Champ
Reply #41 - Jun 24th, 2022 at 11:14am
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A26
WoW you're right there are a bunch of yellow Champs.  I hadn't looked at the Champ before.  I did find a rather peculiar colored one!
  

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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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A26 Invader
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Re: Dumas Aeronca Champ
Reply #40 - Jun 24th, 2022 at 6:59am
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Alfakilo
  I changed things up a bit.  I'm going to go with an over all yellow scheme.  Partly due to the tissue I have on hand and partly to the fact that most of the photos I've seen of the Champ are yellow.

It also doesn't hurt that, at my current level, that I can obtain an overall better finish with one color hehe.

  
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alfakilo
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Re: Dumas Aeronca Champ
Reply #39 - Jun 24th, 2022 at 6:18am
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A26 Invader wrote on Jun 23rd, 2022 at 8:32pm:
I found I color scheme I like.  The blue stripes may be tough to duplicate but I'll just have to cross that bridge when the time comes. 


For fine white details, the Gelly Roll ink pen has worked well for me. Find at stores like Michaels, Hobby Lobby, etc.

I would cut a strip of blue tissue and then use the pen to draw two white lines...one for the red/blue boundary and the other for the middle white line. Trim to fit.
  

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Re: Dumas Aeronca Champ
Reply #38 - Jun 24th, 2022 at 5:23am
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Adjusted/sanded the stab and vertical stab mounts and got close to final positions.  Posing with her tail section temporarily attached.
  

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Re: Dumas Aeronca Champ
Reply #37 - Jun 23rd, 2022 at 8:32pm
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I have a good amount of Mt. Fuji yellow tissue.  It's also the main color on the box art so I'm going to go with it.  May try my hand at airbrushing on this one also.
« Last Edit: Jun 24th, 2022 at 6:56am by A26 Invader »  
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Re: Dumas Aeronca Champ
Reply #36 - Jun 23rd, 2022 at 8:13pm
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Right or wrong I decided to sand the two stringers that are just below the windows flush with the frames.  It basically took them down to half their original thickness.  Now I have a smooth run in which I can apply the tissue paper.

I also added the trailing landing gear leg and wing strut mounts.

All that's left now is to get going on the wing.  The laser cut wood that makes up the wing is quite heavy so I messaged Dumas to see if I can maybe acquire less dense replacements.  If not I'll go with what I have but it doesn't hurt to try.
  

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Re: Dumas Aeronca Champ
Reply #35 - Jun 23rd, 2022 at 3:44am
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I was thinking ahead to covering operations.  On the fueslage I'm a bit confused. 

How do I cover around the window area.  If you look at the photo there is a step at the bottom of the window sill to the stringer directly below it. 

Maybe I'm supposed to sand down that stringer to match the windows?  Then the stringer below that one would also need to be sanded down? 

The motor peg mounts are also not flush with the outside of the same stringers in the rear (so they could attach to the former).  Any thoughts on what I should do?
« Last Edit: Jun 23rd, 2022 at 4:52am by A26 Invader »  

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Re: Dumas Aeronca Champ
Reply #34 - Jun 23rd, 2022 at 3:09am
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The stab is off the board.  It weighs in at a whopping 1.86 grams.  That seems like a lot compared to the fuselage side I weighed previously (photo for comparison).  I know weight in the tail matters so I was hoping for a better number.

The laser cut sheet stock in the kit didn't seem too heavy to me but as I mentioned previously, this is the first time I've ever really paid attention to weights. 

I suppose it's getting close to that time were, if I'm going to be picky about weights, I'll have to start selecting my own balsa and cutting out my own parts.

Vertical stab up next.   

  

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