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CM 8/13

Posted: 27 Dec 2021, 17:12
by patte de loup
I have started my new acrobatic glider last April, hopping it will be finished in next May for the annual GPR meeting in Menez Hom. Huge challenge when, you are still in activity and normanlly I make 2 years for building one :lol:
The real one is stored at Anger Macé Museum and mine will be at 1/3 scale with 4.5 meter of wingspan
Pat'

Re: CM 8/13

Posted: 27 Dec 2021, 17:45
by patte de loup
first step, machining of the fuselage frame
Pat'

Re: CM 8/13

Posted: 28 Dec 2021, 08:22
by patte de loup
Frames are now on the primitive jig and stringers are on going for glueing ( pin 8 x 8 ).

Re: CM 8/13

Posted: 28 Dec 2021, 09:46
by chris williams
Nice looking glider, Pat, not seen that one before...

Re: CM 8/13

Posted: 28 Dec 2021, 11:15
by Cliff Evans
cm813pl.jpg


CM8.13 Info.pdf
(194.11 KiB) Downloaded 146 times

Re: CM 8/13

Posted: 31 Dec 2021, 15:04
by patte de loup
Finish to put all stringers in place an glue the fixed panel of the rudder.

Re: CM 8/13

Posted: 02 Jan 2022, 17:28
by patte de loup
Now, is time for planking with 30/10 balsa sheet of the upper side .

Re: CM 8/13

Posted: 10 Jan 2022, 17:44
by patte de loup
The fuse is enough strong to be remove from the jig and move on to lower side
Pat'

Re: CM 8/13

Posted: 11 Jan 2022, 09:34
by john greenfield
patte de loup wrote: 02 Jan 2022, 17:28 Now, is time for planking with 30/10 balsa sheet of the upper side .
Patte
Can you explain what 30/10 balsa is please?

AEB

Re: CM 8/13

Posted: 11 Jan 2022, 20:21
by patte de loup
john greenfield wrote: 11 Jan 2022, 09:34
patte de loup wrote: 02 Jan 2022, 17:28 Now, is time for planking with 30/10 balsa sheet of the upper side .
Patte
Can you explain what 30/10 balsa is please?

AEB
John,
I cut strips of 10 mm width from balsa sheet of 3mm thick for planking the fuse. Same method for making a hull of boat.
( sorry my english is little poor )

Re: CM 8/13

Posted: 12 Jan 2022, 00:06
by Barry_Cole
Pat,

3 x 10 would be a better description.

:D :D :D :D

BC

Re: CM 8/13

Posted: 12 Jan 2022, 09:25
by john greenfield
patte de loup wrote: 11 Jan 2022, 20:21
john greenfield wrote: 11 Jan 2022, 09:34
patte de loup wrote: 02 Jan 2022, 17:28 Now, is time for planking with 30/10 balsa sheet of the upper side .
Patte
Can you explain what 30/10 balsa is please?

AEB
John,
I cut strips of 10 mm width from balsa sheet of 3mm thick for planking the fuse. Same method for making a hull of boat.
( sorry my english is little poor )
Thank you Patte. 3mm x 10mm makes much more sense. I have seen this annotation on several European plans but never really understood what it meant.

AEB

Re: CM 8/13

Posted: 13 Jan 2022, 21:05
by patte de loup
John,
Just for clarification.
The x/10 annotation on french drawing or Europeen means the thickness of the wood:
- 30/10 = sheet of wood of 3 mm of thickness and is not depending of the type of wood.
Sometimes it's seems " bizare " to 100/10 , which means 10 mm of thickness !
Pat'

Re: CM 8/13

Posted: 14 Jan 2022, 09:15
by Barry_Cole
Please do not post on this Forum for the next 7 days (Approx).

The Forum is being moved to a new server, and your posts will be LOST forever

Thanks for your help.

BC

Re: CM 8/13

Posted: 02 Feb 2022, 21:01
by patte de loup
Planking is finshed and it's time for sanding

Re: CM 8/13

Posted: 02 Feb 2022, 21:04
by patte de loup
Nose and parson's nose need to be done

Re: CM 8/13

Posted: 03 Mar 2022, 20:32
by patte de loup
Nose was added and fuselage back was shape .
Complete sanding of fuse was also done for having smooth surface before recovering it with fiber glass in 2 layers (160g/m² & 80g/m²)

Re: CM 8/13

Posted: 03 Mar 2022, 20:41
by patte de loup
Next hard work comes, apply filler and sand several time for reaching a glossy surfage of the fuselage which will be a master.
A new step is coming, build the mold of the fuselage... a new challenge

Re: CM 8/13

Posted: 26 Apr 2022, 21:11
by patte de loup
some news about CM8/13 progress : mold is done

Re: CM 8/13

Posted: 26 Apr 2022, 21:16
by patte de loup
second part ;)

Re: CM 8/13

Posted: 26 Apr 2022, 23:20
by Cliff Evans
Very nice work!

Re: CM 8/13

Posted: 27 Apr 2022, 08:01
by MartinE
Hello Pat,

I'll be watching with interest, looks great.

How many hours of work would you estimate it took to make that fuselage plug?

Martin

Re: CM 8/13

Posted: 27 Apr 2022, 18:19
by patte de loup
Hello Martin ,

Honnestly I don' t know, is just the pleasure to build something for flying . Roughly , i would say between 100 and 150 hours ?

Pat'

Re: CM 8/13

Posted: 17 Jun 2022, 20:39
by patte de loup
Now , fuselage is gone out from mould :D

Re: CM 8/13

Posted: 17 Jun 2022, 23:37
by Cliff Evans
Nice job.

Re: CM 8/13

Posted: 24 Jun 2022, 09:32
by Vorkosigan
Great job indeed. 100h! wao.
can't wait to see what's next

Re: CM 8/13

Posted: 28 Aug 2022, 20:37
by patte de loup
Now elevator building on the way ;)

Re: CM 8/13

Posted: 04 Sep 2022, 07:15
by patte de loup
Next step => adjusment on fuse and wing link with diedral.

Re: CM 8/13

Posted: 27 Sep 2022, 21:00
by patte de loup
Flag building of the tailfin

Re: CM 8/13

Posted: 09 Dec 2022, 16:47
by patte de loup
wings are coming :D

Re: CM 8/13

Posted: 28 Feb 2023, 15:44
by patte de loup
next steps and ending of the CM 8/13 wing building:
- glass fiber and epoxy resin wrapping
- puttying and sanding with bodywork paper
- shaping of wing tips (removable for transportation )
- Oracal wrapping

Re: CM 8/13

Posted: 28 Feb 2023, 17:27
by chris williams
Looking good, Pat... 8-)

Re: CM 8/13

Posted: 05 May 2023, 07:11
by patte de loup
Building is almost finished. Only remote need to be set up and maiden flight.

Re: CM 8/13

Posted: 05 May 2023, 08:40
by chris williams
Very nice, Patte...!

Re: CM 8/13

Posted: 05 May 2023, 10:02
by Cliff Evans
beautiful!!!

Re: CM 8/13

Posted: 07 May 2023, 19:08
by patte de loup
thanks :)

Re: CM 8/13

Posted: 17 Jun 2023, 21:10
by patte de loup
Here below the link of the maiden flight movie:

Pat'

Re: CM 8/13

Posted: 17 Jun 2023, 22:42
by Cliff Evans
That looks like a great result. Well done.

Re: CM 8/13

Posted: 18 Jun 2023, 08:20
by chris williams
Congratulations Patte...