GliderIreland - Ireland RC Forum - Flying Model forum in Ireland
Gliders => Scale => Topic started by: Fred on June 06, 2007, 08:49:38 AM
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Hello there,
Here is my new challenge.. Yep, sometimes, on the Retroplane Forum, well, I must shut up and don't take challenges !! :D
Vincent had a simple idea... Why not make mini / micro scale models, but the same way as the bigger one ? Let's say, a maximum scale of 1/10 ? Who want to try ?
And that's enough for me to build another glider ! :wink:
Vincent, at the same time, is building a wonderfull Cimbora ! ( http://www.retroplane.net/cimbora/page1.htm )
So, here we go !
First, the scale has been choosen, because of my smallest battery pack... The pack must fit into the second former.. That gave me the scale ! 1/13, that's around 1.20 mtrs wing span...
All the formers :
(http://www.retroplane.net/forum/images/uploads/loopingfred/minigrunau3_529.jpg)
The pen give the size...
The smallest one :
(http://www.retroplane.net/forum/images/uploads/loopingfred/minigrunau4_453.jpg)
All the front formers are made with 3mm plywood... Rear ones, are in 2mm balsa.
(http://www.retroplane.net/forum/images/uploads/loopingfred/minigrunau1_288.jpg)
Taking shape... :D
(http://www.retroplane.net/forum/images/uploads/loopingfred/vueempennages_190.jpg)
The entire glider is sheeted with 0.4mm plywood, then a coloured varnish is applied (teak).
All surfaces are scale ! The covering is made with Japan Paper and a mix of water and white glue (around 50/50)
Only 2 servos (9grs) as the glider only have rudder / elevator functions.. We will see later... And it's not a big job to make a wing with ailerons...
(http://www.retroplane.net/forum/images/uploads/loopingfred/cockpit2_186.jpg)
Nice eh ?! :wink: :D
More to come !!
And a bit more pictures here :
http://www.gliderireland.net/minigrunau.htm
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Man, that went together quick. Cool :D :D :D .
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Well... that's a month after I start ! :wink:
But roughly, there is 5 evenings worth of work.
And here is a picture of the beast yesterday (the glider, not me :lol: ) :
(http://www.gliderireland.net/forum/images/uploads/Fred/grunaupente1.jpg)
Video as soon as I find my dv cable ! :!:
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Looks great Fred.
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Thanks Alan ! :D
And looks even better in the air ! :
http://www.gliderireland.net/images/videos/minigrunau.wmv ( 4.9Mo)
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Some pictures of the mini Grunau, in flight during Retroplane 2007 (you can have the full album and higher resolution photos here : http://www.retroplane.net/album/index.php?cat=11
Well, You need at least 2 launchers ! And not the smallest ones ! :lol: :lol:
(http://www.gliderireland.net/forum/images/uploads/Fred/normal_Grunau-mini_Fred1.jpg)
And in flight :
(http://www.gliderireland.net/forum/images/uploads/Fred/normal_Grunau-mini_Fred3.jpg)
Fly like a dream !
Really easy to fly, and even only with Rudder / elevator, she's really responsive. We tried the roll (well, you need altitude ! :wink: ) and the loop.. And that's pretty much it !
After that, slow low passes to admire the line of the machine.
Thanks to Anthony for the decals (available here : http://www.rubberprintdesign.com)
Plan in a magazine sometimes next year, with Vincent's mignificent Cimbora =P~
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Congrats for your magnificient glider.
Can someone tell me were can fint the plans for the 1/13 scale Grunau Baby IIb ?
Please i want to build one like this.
Best Regards
George