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Old Nov 01, 2012, 05:41 PM
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SDZ 22 Mucha Standard



I built a Mucha Standard scale 1/4.
I use a HQ 2.5 12 airfoil.
The original Airfoil on the K. Nietsher plan scale 1/5 is a Clark Y.
I think that the HQ will be a better.
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Old Nov 01, 2012, 05:42 PM
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Look at this Video.

http://www.youtube.com/watch?gl=BE&v=i3gHw4Kdoz4
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Old Nov 01, 2012, 09:56 PM
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Very nice bird! I like the launch!
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Old Nov 02, 2012, 02:19 AM
DS will change your life
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Danmark, Nordjylland, Sæby
Joined May 2010
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Cool, I was flying a 1:1 in 1974 to 1976.
Nice feeling on the steering surfaces, and aerobatic too
+ 5 G
And the local gliderclub still fly one.


I would also go for the HQ

Regards
S
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Old Nov 22, 2012, 03:02 AM
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Well, the good old Clark Y is not that bad!
A Mucha has narrow tips, which means low Re numbers in 1/4. The HQ does not like low Re numbers. It might not be a serious problem on a build up wing because you will not have a long laminar flow, but in this case you will not have the theoretical performance of the HQ! In the real conditions the Clark will be much better than the polars suggest.

What is the estimated weight?
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Old Nov 23, 2012, 12:24 PM
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Quote:
Originally Posted by Viktor View Post
Well, the good old Clark Y is not that bad!
A Mucha has narrow tips, which means low Re numbers in 1/4. The HQ does not like low Re numbers. It might not be a serious problem on a build up wing because you will not have a long laminar flow, but in this case you will not have the theoretical performance of the HQ! In the real conditions the Clark will be much better than the polars suggest.

What is the estimated weight?
I think 5000 a 6000 gr

The wingtips are 130 mm.

A clark y is surely not a bad choise.
But is some conditions, a HQ 2.5 12% is better.
By heavy aerotows, specialy when 100cc engines or more are use.
In this case a clark y have less stability in faster speed.
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Old Jan 20, 2014, 01:01 PM
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in town

My Mucha builder is back in town.
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Old Jan 20, 2014, 01:06 PM
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Last evolution




My Mucha begins have his form.
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Old Jan 20, 2014, 01:14 PM
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recent



An other pict of the recent evolution.
For the connection of the tailwing I use two carbon tiges 6mm diam

Aurectar
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Old Jan 26, 2014, 06:05 AM
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Covering the fuse with hardbalsa strips as you can see on the picture and sketche.
The layers in red are spruce.
It seems very robust.
The glider on the background is the little brother of the Mucha with the name "Astroflight-Monterey"

Sorry, my nowledge of the englisch linguage is not very exelent.
I hope that you can understand my.

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Old Jan 26, 2014, 10:01 AM
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Aurectar the build looks great! What plans or kit are you building from?
You English is good enough, we can understand. The Monterey looks great!
Cheers!
Thermaleer
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Old Jan 26, 2014, 04:13 PM
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Quote:
Originally Posted by Thermaleer View Post
Aurectar the build looks great! What plans or kit are you building from?
You English is good enough, we can understand. The Monterey looks great!
Cheers!
Thermaleer
I use a Klaus -Nietser (famous german model-glider designer) plan as inspiration.
This design have a good concept but not very accurate.
The original disign have a wingspan of 3000 mm.
The model I build a wingspan of 3750 mm.
I have have make some personal upgrades at the original K.N model.
This result in a other more accurate design.
The most important changes are
-other wingspan (bigger)
-other wingsection (profile)
-Stronger construction.
- more exact scale (for example the nose)

This is a total scratch project.
Every piece i have make on grand mothers manner (old scool)
No cadcam and no laser Cut.

For more information

http://www.modelbouwforum.nl/forums/...tandard-7.html

Cheers,

Aurectar
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Old Jan 26, 2014, 04:34 PM
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very nice indeed!
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Old Mar 05, 2014, 02:57 PM
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sanding

[IMG][/IMG]

The fuse have his definitive form after sanding the workpiece.
The provisore canopy is a bloc of styropor sanding in the form of the real-scale.
Good observation of the form is the question.
Compare the form of the nose with the same model in the other threat ( szd 22 mucha standard 1:4) and look to the nose of the real-scale.

Cheers,

Aurectar
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Old Mar 05, 2014, 04:21 PM
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My Mucha

Aurectar

Looks really good!! You should be VERY proud of your scratch build.

I am looking for a set of full scale plans. Did you design your Mucha from a set of full scale plans? I would be willing to buy outright a set of copies or trade a set of your copies for a full scale set from my collection of copies.

This is the only kit I handle that was not designed from full scale plans.I understand a full scale ship was used for measurements, though.

Cheers
Jim aka vintagersailplnr
PS: Post more pics as you progress, please!
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