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Carden 35% Extra 300 Mid Wing

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Old 11-25-2007, 07:02 AM
  #1
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Default Carden 35% Extra 300 Mid Wing

Carden does not make a 35% Extra 300 Mid Wing airplane kit. Dennis sent me a 35% Extra 330 fuse with Extra 260 wings, motor box and landing gear. This will be my attempt to construct a 35% Extra 300 mid wing. Also I will be installing KS-1060 tuned pipes. First of all I had to mark on the plans the Extra 260 mid wing tube locations. I will be using the identical stab to wing center line offset as the Extra 260.
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Old 11-25-2007, 07:10 AM
  #2
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Default RE: Carden 35% Extra 300 Mid Wing

Saving Weight

I have built the Carden 32% Yak 54 and the 35% Extra 260. I have saved 14oz of weight so far by cutting lightening cut-outs in the plywood parts.
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Old 11-25-2007, 07:16 AM
  #3
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Default RE: Carden 35% Extra 300 Mid Wing

Wing & Balsa skins
I like to install the wing tube sockets with Gorilla glue. Make sure you tape off any openings so when the glue foams and expands it does not get on the wing core surfaces.
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Old 11-25-2007, 07:19 AM
  #4
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Default RE: Carden 35% Extra 300 Mid Wing

Framing up the fuselage
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Old 11-25-2007, 07:35 AM
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Default RE: Carden 35% Extra 300 Mid Wing

SWK,
I've been thinking about asking Carden if they would do that, you're one step ahead of me! I prefer the looks and longer moment arms for precision flight. Assme kit price same as standard 35%er? Looking forward to watching your progress on this!

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Old 11-25-2007, 10:54 AM
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Default RE: Carden 35% Extra 300 Mid Wing

Good luck with your project but you might have made a little less work for yourself if you bought a 260 kit and a 330 turtledeck and canopy. Either way..very cool and good luck.

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Old 11-25-2007, 11:08 AM
  #7
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Default RE: Carden 35% Extra 300 Mid Wing

Landing Gear Plate
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Old 11-25-2007, 02:30 PM
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Default RE: Carden 35% Extra 300 Mid Wing

Two questions:
-How about just raising the wings on the 300 to "midwing"...woudn't that work?

-What's the difference between the 300 & 260 wings?
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Old 11-28-2007, 08:14 PM
  #9
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Default RE: Carden 35% Extra 300 Mid Wing

If you order a "new" kit the 330 and 260 use the same wings. BUZZZZZZZZZZZ
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Old 11-28-2007, 09:31 PM
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Default RE: Carden 35% Extra 300 Mid Wing


Quote:
ORIGINAL: swk550

Framing up the fuselage

What did you use for the floor? black laminate?
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Old 11-28-2007, 09:45 PM
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Default RE: Carden 35% Extra 300 Mid Wing

I use 1/4" grey depron. It is fuel and heat resistant. An added plus is that it is light.
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Old 12-09-2007, 02:22 PM
  #12
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Default RE: Carden 35% Extra 300 Mid Wing

Wing Construction
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Old 12-09-2007, 02:25 PM
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Default RE: Carden 35% Extra 300 Mid Wing

More Wing Construction
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Old 12-09-2007, 02:27 PM
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Default RE: Carden 35% Extra 300 Mid Wing

Stab Construction
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Old 12-09-2007, 02:29 PM
  #15
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Default RE: Carden 35% Extra 300 Mid Wing

Turtle Deck Construction
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Old 12-16-2007, 08:51 AM
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Default RE: Carden 35% Extra 300 Mid Wing

Tuned Pipe Installation

I am installing KS 1060 tuned pipes. The header is a 90mm flex drop style. I am keeping the installation as light as possible as the CG of the plane with aluminum tuned pipes tends to be tail heavy. The exhaust floor is 1/4" grey depron. I use depron on all of my Carden 35% airplanes. I try to keep at least 1/8" clearance between the pipe or canister. So far, I have never melted depron. I will epoxy coat all wood parts in the exhaust tunnel area. Also, it is a good idea to install the wing tube sockets in the fuse before you finish installing the bottom side pieces. I CA in the sockets and then follow up with a 1/8" radius fillet of milled fiberglass and epoxy on the inside of the plywood motor box. The black servo extension lead tube is from Gator RC. It is a lightweight paper material.
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Old 12-16-2007, 09:26 AM
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Default RE: Carden 35% Extra 300 Mid Wing

I like the depron idea for the can tunnel, good luck with your project.


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Old 12-29-2007, 09:10 AM
  #18
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Default RE: Carden 35% Extra 300 Mid Wing

Tuned Pipe holders

I had to cut a slot on the top side of the tuned pipe holders to clear the exhaust outlets.
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Old 12-29-2007, 09:12 AM
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Default RE: Carden 35% Extra 300 Mid Wing

Stab

I like to use the plywood stab roots with tabs for lock-down to the side of the fuse. I will install a anti-rotation pin on centerline after I align the stabs and wings.
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Old 12-29-2007, 09:18 AM
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Default RE: Carden 35% Extra 300 Mid Wing

Wing Root Caps
I have been using 1/4-20 aluminum screws in the wing caps to hold-down to the fuse. I like to install a reinforcing disk on the inside of the root cap. Then I use nylon wing nuts inside of the fuse. I have made a wing root drilling template. All of my Carden wings are interchangeable.
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Old 01-20-2008, 10:22 AM
  #21
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Default RE: Carden 35% Extra 300 Mid Wing

Litening the Fuse and Rudder

I finally have some more time to build. I've added litening cut-outs to the fuse belly and the rudder. I was able to save 1.5oz weight on the fuse and 0.9oz on the rudder. I hope this will offer better CG placement for the batteries as the aluminum KS1060 tuned pipes will move the CG to the rear.
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Old 02-18-2008, 10:45 AM
  #22
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Default RE: Carden 35% Extra 300 Mid Wing

Any updates?
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Old 02-18-2008, 11:32 AM
  #23
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Default RE: Carden 35% Extra 300 Mid Wing

T.Bob

I just finished the plane and am doing final balance and battery installation. I will post some picture shortly.

Steve
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Old 02-20-2008, 08:18 PM
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Default RE: Carden 35% Extra 300 Mid Wing

Come on Stevie your killing us....
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Old 02-22-2008, 11:24 AM
  #25
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Default RE: Carden 35% Extra 300 Mid Wing

Finished Carden 35% Extra 300 Mid Wing

Well, it's finished. I hope to maiden the plane this weekend.

Weight 28# - 0 oz

DA-100
Mejzlik 28-10 prop
Tru-Turn 4-1/2" spinner
KS 1060 tuned pipes
DA 90mm drop headers
Graphtech landing gear & tailwheel assy.
Two 2300 ma A123 Rx batteries
NoBS 2000ma 4.8V NiMh ignition battery
Spektrum AR9000 Rx
JR X9303 Radio
CG set at 1/4" ahead of the wing tube

Thanks

Steve
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