Author Topic: Another project ! 1/4 scale Grunau Baby IIb  (Read 31355 times)

Fred

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Another project ! 1/4 scale Grunau Baby IIb
« on: February 26, 2009, 20:33:40 PM »
Busy eh ?  :wink:  :D

Here is a preview of my next project !

Rudder.. No glue...  :D





A rib...



And the box... Full !  :D



All plywood, and will be sheeted with varnish...
I'll give more info as soon as I start the build !  :D
Education is important, but flying RC planes and gliders is importanter!

joe

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #1 on: February 26, 2009, 21:06:34 PM »
Looks good! I think I know what it is! :D

Fred

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #2 on: February 26, 2009, 21:15:33 PM »
:mrgreen:  :mrgreen:  
Strangely enough, the rib looks much smaller in photo that is really is  :?:
Or I have a big hand, not to scale...  :D
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Another project ! 1/4 scale Grunau Baby IIb
« Reply #2 on: February 26, 2009, 21:15:33 PM »

Fred

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #3 on: February 26, 2009, 21:18:48 PM »
A few datas...

Scale :1/4
WS : 3.39 mtrs
Lenght : around 1.5mtrs

And lots of wood !  :D
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Alan_Perse

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #4 on: February 26, 2009, 23:44:10 PM »
hmmm  :?:  :?:  :?:  :?: . What could it be. I'm going to have to get out my Martin Simons Sailplane books now.

Alan_Perse

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #5 on: February 27, 2009, 12:01:32 PM »
I think I might know what it is  :D . But can you tell me Fred what year this glider can from.

Fred

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #6 on: February 27, 2009, 12:58:40 PM »
:mrgreen:  :mrgreen:

1933 for this version  :P

 :-#
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Alan_Perse

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #7 on: February 27, 2009, 14:07:27 PM »
Well based on that information I guess it can only be a  :-#  :-#  :-#  :-#    :D  :D  :D

Fred

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #8 on: February 27, 2009, 15:25:48 PM »
What what what ???  :D  :D
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Alan_Perse

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #9 on: February 27, 2009, 16:18:14 PM »
Well, I'll wait till you build a bit more to be sure  :D  :D  :D

Fred

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #10 on: March 09, 2009, 11:48:43 AM »
Alright so, I managed to have one of my big table free of rubbish over the week end !
And I also had the right to spend 1 hr into the workshop !  :D  It's Christmas !!  :D  :D

Here we go...
Starting with the wings for once...

The ribs and various parts are lay on the plan..



The profile is a MS535... All the ribs are made of 3mm plywood. Spars are 8x8mm pine from the local hardware shop.

First job, is to cut the end of the spars to fit in the root rib.

What's need to be cut :



And the fit...



After that, it's just a question of gluing the ribs to the spar...A few bits are glued during the process, like the aileron servo frame :



And the big part of the wings, the airbrakes box/frame.
All the parts are glued together "in the air", all the parts slotting together to have all that done accurately...





And the box is then glued on the spar, and the rear end of the ribs, glued to the box...



And we can glue the rest of the ribs... Always check for perpendicularity during the entire process !



And finally, the top spar is glued.

Everything is set for drying overnight with a few weights there and there...
Results tonight !  :D



And that was the end of my hour !

Tonight, plan is to glue the TE and the aileron frame. And I will have a look at the airbrakes system ! Works in theory, but in practice, that can be another story !
Education is important, but flying RC planes and gliders is importanter!

Alan_Perse

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #11 on: March 09, 2009, 12:57:27 PM »
Quote from: "Fred"
And I will have a look at the airbrakes system ! Works in theory, but in practice, that can be another story !


Thats for sure!!!

joe

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #12 on: March 09, 2009, 19:57:40 PM »
I know it's all laser cut a fits together perfectly but, I'm still amazed how quickly you can build these machines :shock:  :shock: :?:  :?:

Looks sweet so far   :clap:  :clap:

Peter

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #13 on: March 09, 2009, 20:41:17 PM »
Imagine trying to cut those ribs out with a fret saw!!!  Great build Fred - a thing of beauty - although I'm not sure what it is yet.

Alan_Perse

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Another project ! 1/4 scale Grunau Baby IIb
« Reply #14 on: March 09, 2009, 20:46:21 PM »
It's a  :-#  :-#  :-#  :-#  :-#  :P  :P . Nice job Fred  :clap:  :clap: .