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Yak-3, scale 1:6, composite build

Old 01-20-2008, 12:28 AM
  #1  
lz23
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Default Yak-3, scale 1:6, composite build

Long time ago I was amazed by this airplane, build few small static models and decide some day to build flying scale model. Now this time come finally, so here it is:










The model will be 1:6 scale. Power 4120 or 4130 depend on the final weight. Optional 0.60 should fit nicely under the cowl too.
Wingspan - 60", length - 55"
Weight hopefully in range of 7-9 Lb.
My build start from fuselage. I have to make positive mold first, so first I build a frame that will be covered with depron and filled with expandable foam. Then will be covered with fiberglass and detailed. Here is build process so far:



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Old 01-20-2008, 04:24 PM
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wilmracer
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subscribed

I look forward to seeing this one come together.
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Old 01-20-2008, 04:45 PM
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Me too! Something different is always nice.

Looks like you are off to a fine start!
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Old 01-20-2008, 05:03 PM
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lz23
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Rare war birds always have a lots of charm for me. Here is a little more:



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Old 01-20-2008, 05:28 PM
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Looking good, gotta watch this.

Paul
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Old 01-25-2008, 05:21 PM
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Here is little progress:


Fuse is filled with foam.


Some foam is removed and covered with depron.
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Old 01-25-2008, 06:17 PM
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Grasshopper
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Subscribed. Not sure how I missed this one. That's a nice looking plane. Looks like the mated a P-51 and a Spitfire.
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Old 01-28-2008, 03:39 AM
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Here is after rough shaping. Still far from done, but all ready recognizable shape:

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Old 02-02-2008, 11:57 PM
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I'm always very slow when it comes to filler. Last week was mostly filler and sanding. Now the fin is ready too.

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Old 02-03-2008, 04:58 AM
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Here is the beginning of the stabilizer. All will be covered with 3/32 balsa and thin fiberglass and epoxy.





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Old 02-03-2008, 08:15 PM
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Here the stabilizer is ready



Fit in the fuse is tight. Wil need little work i there, but not too much.



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Old 02-14-2008, 02:35 AM
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Bottom part of the wing is ready. Now have to cover the top.



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Old 02-14-2008, 12:37 PM
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Looks good!
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Old 02-14-2008, 03:45 PM
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All shown here is going to be the plugs, not actual flying parts. This model is going to be full composite build.
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Old 02-16-2008, 10:50 PM
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The wing is covered. Now is time for leading edges and wingtips.
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Old 02-19-2008, 01:15 AM
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Here is a little more of the wings:
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Old 02-23-2008, 11:28 PM
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Here is interesting pic - My Bristol on top of Yak's wing. Just for size comparison.
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Old 02-24-2008, 02:11 AM
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Here is the coolers. It is hard to see, but this is what I can get with the cellphone camera... They are still in very early stage, but start taking shape.
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Old 02-24-2008, 02:44 AM
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haze_b
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Amazing work!!! I look forward to seeing it fly!!
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Old 02-25-2008, 04:52 PM
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lz23
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Thanks! Will have a lot more things to do before get her in the air. Here is a little interesting info.
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Old 02-26-2008, 11:13 AM
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Wow, nice jog. I'll be watching.
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Old 03-18-2008, 05:21 AM
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lz23
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Slow progress: stabilizer is primed, wing is glassed. Next will be glass for the fuse. And the wing is primed too, now will be lots of sanding...
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Old 03-18-2008, 11:39 AM
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Wow. Very nice work!!
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Old 03-18-2008, 04:27 PM
  #24  
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Thanks! Cool part is just coming!
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Old 04-11-2008, 04:13 AM
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I have little progress on the wing. Top side is almost ready, bottom is still gray, have to go over few more time with sandpaper and paint it.
Here is current status:
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