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Sky9pilot
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Re: Scimitar Embryo Build
Reply #7 - yesterday at 3:53pm
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Great looking bones...I love that swept wing! The empennage is most unusual!  This is looking like a fun plane!  Smiley

After looking at the wing saddle looks like you can adjust CG by moving the wing back and forward some?   Cheesy Wink
  

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MKelly
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Re: Scimitar Embryo Build
Reply #6 - yesterday at 9:39am
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Thanks guys.  The curves weren't too bad to deal with - they're all gentle enough that the soaked wood had no trouble following the curves.  I only used pins, didn't have to make any forms.

Sanding the wings was more involved than I thought it would be, mostly due to the need to taper the leading edge and turbulator spar towards the tip, and because I wanted to sand a bit of washout into those pointy tips.  A couple hours of relaxing work got it done, and I only popped one glue joint...

Once the sanding was done I cut a couple simple jigs for sanding the dihedral bevel on wing and stab panels, then glued the panels together.  I reduced the wing dihedral from 13 deg to about 10deg per side (personal preference - 13 seemed excessive given the sweep of the wings).  Stab dihedral is 20deg per side in accordance with the plan.

Did a quick mockup last night and took some pictures.  Spindly-looking thing, but I like it.

Mike
  

( 360 KB | 2 Downloads )
0119_Stab_Dihedral_Set.JPG
( 334 KB | 2 Downloads )
0119_Wing_Dihedral_Set.JPG
( 347 KB | 4 Downloads )
0119_Bones_Mockup_Right_Front_Low.JPG
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0119_Bones_Mockup_Right_Front_High.JPG
( 342 KB | 5 Downloads )
0119_Bones_Mockup_Left_Front_High.JPG
( 353 KB | 5 Downloads )
0119_Bones_Mockup_Left_Rear_High.JPG
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staubkorb
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Re: Scimitar Embryo Build
Reply #5 - Jan 17th, 2022 at 12:50pm
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Second Tom's remark about the curves challenge!  At least you only have to "worry" the LE's to final shape Wink!

Really an attractive model!
  

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(with a bit of rc thrown in for giggles)

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Sky9pilot
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Re: Scimitar Embryo Build
Reply #4 - Jan 17th, 2022 at 12:30pm
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All those curves have to be a challenge!  I can't wait to see how you accent the shapes with your finish and color scheme! Smiley
  

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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pb_guy
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Re: Scimitar Embryo Build
Reply #3 - Jan 17th, 2022 at 11:43am
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Looking great. The curves remind me of the Whimsey.
ian
  
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MKelly
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Re: Scimitar Embryo Build
Reply #2 - Jan 17th, 2022 at 11:17am
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Thanks Tom.  Worked on the wing and stab this week.  Laminated LE for both.  Spars were soaked for a couple of days, then glued down with SuperPhatic.  The wing uses cracked rib construction, a first for me.  I made a simple jig for slicing the angle on the trailing end of the ribs.

After all the glue had dried I removed most of the pins, then liberally sprayed the wing panels with water.  I'll let that dry for a day to (hopefully) remove any remaining stress from bending the sticks.

In the meantime, I sanded the stab to the recommended airfoil section.

Mike
  

( 291 KB | 9 Downloads )
0112_Wing_Frame_Glue-Up.JPG
( 333 KB | 6 Downloads )
0112_Wing_and_Stab_Spar_Installation.JPG
( 375 KB | 5 Downloads )
0117_Rib_Trimming_Jig.JPG
( 361 KB | 6 Downloads )
0117_Wing_Glue-Up.JPG
( 355 KB | 7 Downloads )
0117_Stab_Sanded.JPG
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Sky9pilot
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Re: Scimitar Embryo Build
Reply #1 - Jan 13th, 2022 at 12:51pm
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Mike,
You have a great eye for the unusual and eye catching designs!!  I can't wait to see this one come together.   Smiley
  

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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MKelly
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Scimitar Embryo Build
Jan 12th, 2022 at 2:49pm
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My Embryos keep flying away, so I keep building them.  This time it's Florent Baecke"s "Scimitar".  A neat swoopy-looking design by a long-time Alamo Escadrille member who's now passed on.

Started with the fuselage - the aft longerons are laminated from two strips of 1/16"x1/32".  Other than the curves construction is pretty much a standard box fuselage.

Mike
  

( 322 KB | 15 Downloads )
0000_Scimitar_Kit_Lable.JPG
( 398 KB | 11 Downloads )
0109_Fuselage_Side_Frame_Build.JPG
( 365 KB | 15 Downloads )
0109_Fuselage_Sides_Built.JPG
( 395 KB | 14 Downloads )
0109_Fuselage_Glue-Up.JPG
( 317 KB | 11 Downloads )
0110_Fuselage_Frame_Crosspiece_Glue_Up.JPG
( 302 KB | 11 Downloads )
0111_Fuselage_Frame_Assembly_Complete.JPG
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