RE: 34% Colombo Anderson Extra 300L Buld!!  
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> RE: 34% Colombo Anderson Extra 300L Buld!!
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RE: 34% Colombo Anderson Extra 300L Buld!! - 8/18/2007 3:42:25 AM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		Started the leading edge taper.

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_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 26

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/19/2007 1:00:51 AM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		Got some end caps glued on. I always use a balsa stick down the center to keep it flat against the surface.

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_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 27

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/20/2007 3:53:37 AM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		After a lot of teedious fitting and sanding, I got the wing root ends matched up to the fuselage sides and glued the root ribs on.

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_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 28

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/20/2007 6:07:28 PM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		Next is setting the ani-rotation pins. There was just enough dowl to make six pins at 1 and 3/4 inches long. I marked these so I could set them so there was 1/2 inch of dowl showing when they were glued in. Just like the stabs, I used a small piece of 1/4 X 1/4 balsa when I set the incidence on the wings. Again I used the Robart meters for this process. All incidences are set at zero. Once the wings were set, I glued the 1/4 X 1/4 balsa to the fuse, under the wing so I could drill the pins without the wing wondering. I used a long 1/4 inch drill bit for this process.

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_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 29

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/21/2007 8:03:35 AM   
Olli-Matti


 

Posts: 28
Joined: 9/27/2005
From: Helsinki, FINLAND
Status: offline 		Hi Steve!

Nice to see that you have started the big one.

I am sure that with your previous experience from the 50cc version this
one should be a real winner. Just keep it as light as possible!

I have now a bit under 180 flights on my 27% extra, and it still is a pleasure to fly.


BR
Olli

(in reply to Steve)
       Post #: 30

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/21/2007 5:58:47 PM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		Hey Olli,
Glad to hear your still flying your Extra. I need to get mine out again some time. I've been flying my 30%er all summer long. The CA has been just sitting as a backup. I think I put about 50 or so flights on it last year. I hope to have this one going by early spring. The only hold up for me is "servos", and weather. By mid October flying is done around here until we get enough snow to fly with skis on. I've been happy with the build so far. It is almost just like the 27%er, except for the tailfeathers!!

_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Olli-Matti)
       Post #: 31

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/21/2007 9:26:48 PM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		After doing some thinking on the wing atatchment method, I went with the root end bolt. I cut four 1" X 1" X 1/4" hardwood blocks and made two 1" X 1" X 1/2" blocks and glued these into the root ends of the wings. I previously make a template with the root ply pieces to cover these. Once the blocks were glued in, I glued the support pieces over top for extra strength. Then I drilled through the fuse side and into the wings, center block. The blocks were then tapped for 1/4X20 bolts. I'm using plastic bolts, so I also drilled the rear anti-rotation dowls for pins as an extra safety measure.

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_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 32

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/23/2007 1:18:48 AM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		Next was to figure out where I was going to mounts the servos. The instructions don't give a lot of detail in this area. The wings are marked, but the servos run horizontal to the hinge line. I moved the servos 90* and closer to the hinge line. The instructions also don't give much detail on mounting the servos, so I decided to use a Dalton type servo mount. I built these out of 1/4" balsa sheet for the sides, 1/8" balsa sheet for the ends, and 3/8" X 1/4" spruce for the servo mounts. The servos are in about the same area that CA had them marked.

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< Message edited by Steve -- 8/23/2007 2:16:21 PM >

_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 33

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/23/2007 1:44:05 AM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		Once I cut the sheeting with the hobby knife, I used my dremmel with the router bit to cut out the foam.

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_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 34

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/23/2007 1:46:56 AM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		One more.

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_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 35

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/24/2007 2:01:11 AM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		All of the servo mounts are in the wings and stabs.

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_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)
       Post #: 36

RE: 34% Colombo Anderson Extra 300L Buld!! - 8/24/2007 2:06:50 AM   
Steve



Posts: 1723
Joined: 12/2/2001
From: Ashton, ID, USA
Status: offline 		The lines on the stab are marked for 3/8" balsa. I had to move the hinge line back 1/8" and use 3/8" balsa, (not the supplied stock), to get the amount of area I wanted to seat the hinges. I also counter-ballanced the elevators, which will help make up the diffferance plus some. The stab tube is very close to the hinge line at the stock location, and with the stock balsa sheet. I also wanted more deflection on the elevators, and 3/8" sheet on the elevator leading edge and stab trailing edge will do the trick. I'm going to use 1/2" balsa on the ailerons.

_____________________________

AKA,, "The Spleen"
If you want to see my Super Power,,, pull my finger.

(in reply to Steve)