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Old 01-27-2011, 07:36 PM   #41
OLD PRAIRIE RED NECK
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Re: Sig Citabria (Build Log)


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Just found this thread. Had one of these planes! Loved the way it looks & flies! Powered mine with OS40SF , lots of power! Flew it till it fell apart on landing one day.
My opinion: Wing is way overbuilt, bit heavy for it's size, not a problem.
Fuse/firewall connection is underbuilt, big problem! This is where mine failed! Joint between ply firewall & fuse sides has insufficiant bonding area. Especially for a larger, heavier, more powerfull 4 stroke!
Suggested fix: drill 4 holes through firewall & into next former back & glue in wooden dowels to help spread the load further back.
Hope that its helpfull!
Liked mine so well I have balsa USA Citabria Pro plans comming. 91 to 120 4 stroke size!
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Old 01-28-2011, 07:47 AM   #42
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Re: Sig Citabria (Build Log)

Yes Dean it was a big job. The pictures show before and after. I had to move a wall by 18" and take the space from a closet to build the shower...
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Old 01-28-2011, 07:50 AM   #43
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Re: Sig Citabria (Build Log)

Thanks for the advice Old Prairie Red Neck. I will look closely at the firewall to make sure it's strong enough to survive some of my hard landings.
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Old 01-28-2011, 02:23 PM   #44
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Re: Sig Citabria (Build Log)

Nice reno!

How are the lights routed for the window blocks. And what type of lights?
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Old 01-28-2011, 05:55 PM   #45
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Re: Sig Citabria (Build Log)

The glass blocks are illuminated by a ribbon of waterproof LED that goes around the blocks in the "window" frame. The blocks are holding together with stripes of plexiglas and clear silicone instead of mortar to allow the light from the LED to go through the glass blocks.

The LED lights can be adjusted to any colour by a remote. They are 12v and there is a controler on the wall in the room adjacent. The 110v power source is in the basement, therefore there is no risk of electrocution...
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Old 03-21-2011, 09:29 AM   #46
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Re: Sig Citabria (Build Log)

I am now fully back on track of making that plane fly this spring. I worked on it for most of the week end. I built a servo tray out of 1/32 plywood. I made some small plywood doublers where to servo screws will go so there is more material to grab to and I made somewhat of a frame to support the tray out of lite ply and balsa.

I spent the rest of the weekend sanding the control surface to round out the edges. That's a lot of work...

I will post more pics later.

Alain
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Old 05-03-2011, 01:27 PM   #47
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Re: Sig Citabria (Build Log)

Slowly progressing again as after having completed all the renos in the house, my wife now wants to move to a different part of town...I will buy a house that doesn't require any renos this time.

I finally completed the instalation of the cowling. The pictures are showing how to ensure that ou are drilling the holes correctly centered with the wood blocks. Only thing left to do is to "paint" the firewall with epoxy to make it fuel proof.

Alain
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Old 05-04-2011, 12:22 PM   #48
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Re: Sig Citabria (Build Log)

Done a lot of sanding lately. The tail is now ready to be covered. I will use Solartex to cover this bird.

Alain
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Old 05-04-2011, 01:39 PM   #49
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Re: Sig Citabria (Build Log)

I started to dry fit the tail parts. Looking good so far as distance from wingtip to tip of horizontal stab is off by only 1 mm from each side. Everything is looking square and true. It's probably going quite a different story when I will apply some glue...

Alain
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Old 05-05-2011, 11:44 PM   #50
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Re: Sig Citabria (Build Log)

Looks excellent so far, a master build! Very clean, nice job. What's your power plant going to be? I think you had two to choose from...
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