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Author Topic: 1960s Coupe d'Hiver Postal  (Read 153003 times)
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Mark Braunlich
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« Reply #675 on: November 26, 2019, 10:20:18 AM »

Aadamisin,

You've probably figured this out already but I just wanted to mention that the Elyea Coupe has a transition from rectangular to triangular cross section of the fuselage between the trailing edge of the wing and the rear of the fuselage sheeting.  It's not shown that way on this drawing (plan view) and the notes might suggest an abrupt change in section at the beginning of the truss rear fuselage but I would think that unlikely.
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AAdamisin
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« Reply #676 on: November 26, 2019, 10:48:23 AM »

Aadamisin,

You've probably figured this out already but I just wanted to mention that the Elyea Coupe has a transition from rectangular to triangular cross section of the fuselage between the trailing edge of the wing and the rear of the fuselage sheeting.  It's not shown that way on this drawing (plan view) and the notes might suggest an abrupt change in section at the beginning of the truss rear fuselage but I would think that unlikely.

Mark,

Thanks for pointing that out.  I saw that note and am happy I interpreted it the same way.  I was thinking of making the lower 3/32" sq stick spruce to take some abuse.  Makes this model unique.  While I know the takeoff stake isn't required, still thinking of making one just for the heck of it.  Adds character.  This will probably be the first model I complete as the wing and tail are flatter and easier to frame.  Need the practice anyways.  I have pre-carved the LE and TE for the wing and tail and stripped off sheet afterwards.  Seemed easier that way. 

Looking at French Coupe Pics, I need to adjust my drawing to fix the wing mount and add some geodetic ribs in the wing.  The 3-view seems to be built a bit spongy.  Pics look more what would expect.

Archie Adamisin
Burlington, KY
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AAdamisin
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« Reply #677 on: November 26, 2019, 10:54:30 AM »

  Could you please explain how your rib template works, perhaps a photo of the underside of the template would reveal all?

I will have to get a picture of the template inserts from the back.  Simple explanation is I strip 1/16" x 7/16" x 6in pieces of balsa.  Then slide into template and cut the bottom 1st.  There is a stop in the LE and what would be the top of the rib but is flat.  I cut the curve, then the spar notch.  Then pull out and put into the top.  There is a stop for the LE and a curved stop to nest the bottom profile.  Then I cut the top curve, then spar notches.  I then cut the TE off, then pop out the finished rib.  The other side of the blank cuts rib #2.  Trick is sharp razor blade and pressure on the balsa to keep it from slipping.   I will attach pictures when I get home tonight.

Archie Adamisin
Burlington, KY
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dputt7
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« Reply #678 on: November 26, 2019, 04:28:28 PM »

    Thanks for that Archie, I was on the right track, a photo would be good if it's not too much trouble.
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AAdamisin
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« Reply #679 on: November 26, 2019, 04:47:52 PM »

Here are the pictures of the rib cutting jig process.  Pretty simple.  I made it so I can use a base block and any coupe or P-30 size rib. 

Thanks,

Archie Adamisin
Burlington, KY 
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RolandD6
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« Reply #680 on: November 26, 2019, 05:32:29 PM »

Hi Archie

What an excellent idea. Thank you for sharing.

Paul
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« Reply #681 on: November 26, 2019, 06:40:28 PM »

Very neat idea - thanks for sharing.

John
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AAdamisin
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« Reply #682 on: November 26, 2019, 10:15:42 PM »

While cutting out ribs tonight, I have been thinking about rigging the French Coupe and the Lyle Elyea coupe.  Any pointers on:

1.) Thrust angle?  2 down and 2 right a good starting point?
2.) Washout amount?
3.) Wing and tail incidence on the French coupe?  Target decalage?

Just trying to plan for the end.  Any pointers would be appreciated.

Thanks,

Archie Adamisin
Burlington, KY
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« Reply #683 on: November 27, 2019, 04:35:20 AM »

By the way you wouldn't be related to the CL Adamasin family?

John
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« Reply #684 on: November 27, 2019, 06:02:34 AM »

By the way you wouldn't be related to the CL Adamasin family?

John


Oxpaf,

I am.  Big Art Adamisin was my grandfather.  I flew CLPA for several years. 

Archie Adamisin
Burlington, KY
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dputt7
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« Reply #685 on: November 27, 2019, 07:07:17 AM »

  Thanks Archie, looks great, how tough is the printed plastic? I guess you just need to take care when cutting.
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AAdamisin
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« Reply #686 on: November 27, 2019, 08:15:33 AM »

  Thanks Archie, looks great, how tough is the printed plastic? I guess you just need to take care when cutting.

I used PLA because it's cheap and easy to print.  There are tougher plastics out there that would hold up better like TPU but they are not as easy or fast on the printing side.  It's actually holding up fine.  Using as a cutting guide and not pushing into the base is key.

Archie Adamisin
Burlington, KY
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BG
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« Reply #687 on: November 27, 2019, 08:45:55 AM »

Hi All,
this has probably been asked before somewhere in the previous 24 pages but I will ask again - may I use an older design? I have just drawn up Etienvre and will be doing a laser cut kit .... if no it is no problem just checking.

Also, this seems like such a great idea I am wondering why we don't have an equivalent wakefield postal for the same period.

Bernard
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PeeTee
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« Reply #688 on: November 27, 2019, 08:55:58 AM »

Hi Bernard

I'm afraid not, It's for 60's coupes only and the MichEt is 54/55, sorry!

Peter
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BG
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« Reply #689 on: November 27, 2019, 08:59:45 AM »

guess I better draw up another coupe then  Grin
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« Reply #690 on: November 27, 2019, 02:50:37 PM »

Bernard
The Etienvre would not qualify on publication date, as the primary source plan was drawn by Bernard Michaud in 2003, direct from the model and published in Vol Libre. I have not seen any earlier source.
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Don
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BG
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« Reply #691 on: November 29, 2019, 03:43:17 AM »

Ok so just for clarification .... if a plan is drawn up tomorrow up from a 1964 3 view, or direct from the original model, the design will fail to qualify for this event because the plan was not published in the 60s. Is this correct?

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kkphantom
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« Reply #692 on: November 29, 2019, 04:31:13 AM »

I think if the three view was published in 1964 that would qualify the design. Many of the designs which appeared in AeroModeller annuals never had a full size plan. Likewise, if a plan which was originally published in the 1950's also appeared in a magazine in the sixties it would also qualify.
Gary
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« Reply #693 on: November 29, 2019, 06:37:49 AM »

Gary is perfectly correct, see reply #668 for the rules in this thread:

  •   Models must be built from plans or 3-views published between January, 1960 and December, 1969 (inclusive).    Earlier models that were published in the 1960s may be flown.  Models designed in the 1960s that were not published until later may not be flown in this competition.

Don
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BG
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« Reply #694 on: November 29, 2019, 12:48:26 PM »

thx for the info guys.
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