Scale Racing Discuss all aspects of semi-scale pylon racing.

Czech Mate / Perestroika

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Old 02-19-2013, 03:22 PM
  #76
Chad Veich
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ORIGINAL: Iron Dog

Gorgeous, Chad!
Thanks for checking in Iron Dog, much appreciated.

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ORIGINAL: jeffk464

You know I'm thinking this plane would be about perfect for a DLE20. How does it come out balance wise? think the DLE20 would require tailweight? Can you post what engine you used and how much lead you had to put in the nose for balance. I might be interested in one of these.

Are there any paint schemes besides chrome?
Hi Jeff, the blue and chrome prototype seen on previous pages is powered by a YS 1.20 which required the flight pack battery to be installed just forward of the tailwheel for proper balance. My airplane seen above will be getting a DLE 20 but it has not been mounted yet. I don't know how it compares to the YS for weight but I imagine that I will be able to achieve the proper CG using battery placement and will not have to resort to any dead weight. I would rather not have to put my battery in the tail but we will see! I will be sure to post my results here as soon as the engine and other components are installed and I have an idea of what is required.

On a related note the fiberglass cowl is molded about an inch longer than scale to allow lighter motors to be pushed forward a bit if necessary. The prototype only weighed about 9.5 pounds and would fly just fine on a .61 size two stroke or .90 size four stroke for those who just want a mild sport flyer. The extra inch in the cowling would help some with balance and does not effect the appearance at all in my opinion. Please note that my cowl has been cut back to the scale dimensions since I will be using the heavier DLE gasser.

Regarding paint schemes there are not any scale ones that do not include a bare aluminum fuselage for "Czech Mate" or "Perestroika". There are other modified Yak racers with various paint schemes but none of them with the cowl/canopy arrangement shown on my plans. I am working on revising the plans so that those other versions could be built but it will be a while since it involves making the tooling for an entirely different cowl and canopy. I am also adding flaps to the design for those who would like to have them. Here are some examples which could be duplicated based on my revised plan when I get it finished. (It may be a while!)






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Old 02-13-2014, 08:38 PM
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Hi Chad,

Its been awhile since I have followed this thread but I found a U-tube video you might appreciate.

Enjoy!

http://youtu.be/rtsEd2VPZtg

Carlos G
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Old 02-14-2014, 09:30 AM
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Thanks for the link Carlos. I have seen that video before and it is spectacular, although it does not end well for "Czech Mate" unfortunately! I am currently working on a large scale Macchi 202 for a customer which may very well end up with one of those Kolm inline triples when it's all finished. What a sound!
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Old 07-19-2014, 01:31 PM
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I have posted a short-kit for the Czech Mate / Perestroika for sale at the link below if anyone is interested. Includes all the laser cut parts, full size printed plans, and the fiberglass cowl. I only have one so first come first served!

http://www.rcuniverse.com/market/ite...144&electric=0
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Old 09-18-2014, 08:12 AM
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Too bad I'm broke and on another continent...
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Old 09-18-2014, 11:21 AM
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Originally Posted by perttime View Post
Too bad I'm broke and on another continent...
I sent you a PM perttime but I'm not sure if it went through or not. Let me know if you did not get it and I will try again.
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Old 09-18-2014, 11:59 AM
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A friend and me are also making Czech Mate and Perestroika.
Size 1:3.3 from airworld. For power a couple of moki 400 will do the job

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Old 09-18-2014, 12:28 PM
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Quote:
Originally Posted by snauwaertj View Post
A friend and me are also making Czech Mate and Perestroika.
Size 1:3.3 from airworld. For power a couple of moki 400 will do the job
Beautiful! Keep us informed of progress and post lots of pictures!
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Old 09-19-2014, 08:12 AM
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Quote:
Originally Posted by snauwaertj View Post
A friend and me are also making Czech Mate and Perestroika.
Size 1:3.3 from airworld. For power a couple of moki 400 will do the job
Those two in the air at the same time will be a great sight and sound! Is there any large scale racing in Central Europe? (I consider myself to be in the North, and there certainly isn't here)

.-.-.-.

And no, I did not buy the short-kit that Chad is offering...
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Old 10-23-2014, 08:59 AM
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Some more picteres, this is what I cal ARF


[ATTACH=CONFIG]2041858[/ATTACH][ATTACH=CONFIG]2041857[/ATTACH][ATTACH=CONFIG]2041859[/ATTACH][ATTACH=CONFIG]2041860[/ATTACH][ATTACH=CONFIG]2041861[/ATTACH] Now waiting for the 36x20 fiala 4blade props with square tips.
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Last edited by snauwaertj; 10-23-2014 at 09:02 AM.
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Old 10-23-2014, 09:18 AM
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Quote:
Originally Posted by snauwaertj View Post
Some more picteres, this is what I cal ARF
Now your just being a "tease" snauwaertj! Wow, do those look fantastic or what?!!!
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Old 10-23-2014, 09:25 AM
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A quick update for anyone building, or thinking of building, the Yak from my plans. Dave Schwirian of Scale Specialties now has a canopy available for the airplane as seen below. Contact me if you're interested and I will point you in the right direction. Oh, and I am working on laser files to go to Manzano Laser Works who will be offering a short kit.



My "Perestroika" prototype is currently with a friend of mine who will be finishing it up for me to the point of being ready to cover. Hopefully I will have some updates on its progress in the near future. It's been a looong time coming but I hope to have it up and flying in 2015. Fingers crossed!
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Old 11-04-2014, 08:24 AM
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Realy making progress
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Old 11-05-2014, 12:36 PM
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Quote:
Originally Posted by snauwaertj View Post
[ATTACH=CONFIG]2044720[/ATTACH][ATTACH=CONFIG]2044721[/ATTACH][ATTACH=CONFIG]2044722[/ATTACH][ATTACH=CONFIG]2044723[/ATTACH]

Realy making progress
Beautiful!
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Old 11-22-2014, 02:38 PM
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Looks awesome!
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