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-   -   Balsa USA Super Cub Build (http://www.rcuniverse.com/forum/kit-building-121/4754623-balsa-usa-super-cub-build.html)

Tony Hallo 09-16-2006 07:10 AM

Balsa USA Super Cub Build
 
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I'm building two 1/3 scale Balsa USA Super Cubs this building season. I plan to post photos along the way. Shown here are some photos of the wing framing. Rather than mount the servos as shown on the plans I substituted 1/8" plywood for the ribs where the aileron and flap servos are located.
Tony Hallo

Tony Hallo 09-16-2006 07:15 AM

RE: Balsa USA Super Cub Build
 
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The planes are being build with the J3 scale aileron option from Balsa USA. In the Super Cub case, this requires two optional kits to handle the ailerons and flaps. Here are details of the hinges and control horns.
Tony Hallo

Tony Hallo 09-16-2006 07:19 AM

RE: Balsa USA Super Cub Build
 
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Here's a photo of the full scale aileron control horn. The full scale is a pull-pull arrangement, the model will have push rod on the under side of the wing.
Tony Hallo

Tony Hallo 09-16-2006 07:21 AM

RE: Balsa USA Super Cub Build
 
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This wing takes up most of my 13' work bench.

NCIS 09-16-2006 05:22 PM

RE: Balsa USA Super Cub Build
 
Does that have barn door ailerons? I have a thread started on a 60 size Great Planes 90" wingspan Cub and it's got barn door ailerons. You can see the indent in the wing where they go in my pictures I posted. So far yours looks like a good build!

Gibbs

rhowardsta 09-16-2006 10:46 PM

RE: Balsa USA Super Cub Build
 
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Here's a couple of pics of my Balsa USA Cub I've been working on......... I would like to make it as scale as possilbe,do you know of anywhere to find cockpit material?

Tony Hallo 10-02-2006 08:35 PM

RE: Balsa USA Super Cub Build
 
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Here are some photos of the wing aileron and flap hinging. Hopefully the pace will pick up, the first one always the funnest and most difficult, once all the details are worked out, it's just cut and glue. To be honest I was a little worried about the scale hinging, but it looks as though all worked out well and I am pleased with the results.
Tony Hallo

Tony Hallo 10-02-2006 08:40 PM

RE: Balsa USA Super Cub Build
 
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A few more. The leading edge drops below the bottom surface of the wing when deflected up to provide addition drag when banking which helps prevent adverse yaw, hope it works!

Edwin 10-03-2006 07:55 AM

RE: Balsa USA Super Cub Build
 
Must be something in the air. J-3 builds seem to be falling from the sky. I have a build thread going at rcsb. Busa 1/4 J3 and the L4. Couldnt decide on which one so I'm building both.
Edwin

Tony Hallo 10-28-2006 04:34 PM

RE: Balsa USA Super Cub Build
 
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The Super Cub will be powered by a 3W 56 Twin Competition verison, should be more than adaquate for this plane. It fits inside the cowl completely, even the plugs and spark plug wires fit without holes. Original plans called for a 64 CC four stoke conversion engine, however the cowl glass work was much to nice to hack up. So the search was on for something that would fit without cutting the cowl up. The 3W is a nice piece.
Tony Hallo

Tony Hallo 10-28-2006 04:47 PM

RE: Balsa USA Super Cub Build
 
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The rear intake and small crankcase size provided a challange to get everthing just right. The firewall is two layers of 1/4" plywood beveled on a 45 degree angle to provide adaquate clearance for cooling. The cowl overlaps the fusalage by 4" so the carb will be accessable when the cowl is removed.
Tony Hallo

Tony Hallo 10-28-2006 04:52 PM

RE: Balsa USA Super Cub Build
 
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The landing gear took about a week of evenings to complete. The assembed gear offered by Balsa USA is a bargain. I would recommend upgrading to the assembed gear option if anybody out there is considering building one these planes. It works great, just took some time to build. The bungee covers are held on with small sheet metal screws, the original design looked like it would be troublesome after the plane had a few flights on it.
Tony Hallo

Tony Hallo 10-28-2006 05:08 PM

RE: Balsa USA Super Cub Build
 
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Here's another shot.

Tony Hallo 10-28-2006 07:38 PM

RE: Balsa USA Super Cub Build
 
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Some photos of engine installation.
Tony Hallo

CubCrafter 10-28-2006 10:33 PM

RE: Balsa USA Super Cub Build
 
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Tony,

Here are some photos of my 1/3 scale Balsa USA Super Cub.
I flew this plane to 5th place at Top Gun in 2005.

It took me about 2 years to complete.
Lots of fun to build but takes a lot of time to add the scale details.

Larry


CubCrafter 10-28-2006 10:41 PM

RE: Balsa USA Super Cub Build
 
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Some more photos

selwyn 10-29-2006 04:37 PM

RE: Balsa USA Super Cub Build
 
Tony, I'm enjoying this thread...keep up the good work and keep the pics coming....I've been looking at doing one of these, and this may just push me over the edge.;)

Selwyn.

selwyn 10-30-2006 11:51 AM

RE: Balsa USA Super Cub Build
 
Larry...very nice looking bird....what motor did you use?

Thanks

Selwyn.
Quote:

ORIGINAL: extra300s

Tony,

Here are some photos of my 1/3 scale Balsa USA Super Cub.
I flew this plane to 5th place at Top Gun in 2005.

It took me about 2 years to complete.
Lots of fun to build but takes a lot of time to add the scale details.

Larry



gumhead 11-12-2006 09:23 AM

RE: Balsa USA Super Cub Build
 
Have you started to cover her yet tony?

tailskid 11-12-2006 04:21 PM

RE: Balsa USA Super Cub Build
 
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Here is one I saw fly this past weekend....

Tony Hallo 11-12-2006 05:36 PM

RE: Balsa USA Super Cub Build
 
No I'm still building, finishing the right wing now and then it's time fit everthing together. The plane will be covered with Stits covering, first time I have used this covering material, hopefully everthing goes OK.

Tony Hallo 11-18-2006 06:05 PM

RE: Balsa USA Super Cub Build
 
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Here's a photo of the fuselage, fitting the cabin top on. Work will begin on the tailplane soon.
Tony Hallo

Tony Hallo 11-19-2006 09:52 PM

RE: Balsa USA Super Cub Build
 
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The top is just about finished, tomorrow I hope to fit the stabilizer and rudder.
Tony Hallo

Tony Hallo 11-19-2006 09:57 PM

RE: Balsa USA Super Cub Build
 
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One modification I did on the 5/32" front wires. The instructions have you hold the wire in place with epoxy. I soldered on a short piece of 3/16" bass tubing and formed an eye on the end, a 4-40 screw and blind nut secures the wire in place. The joint will be epoxied once the fuselage is moved.
Tony Hallo

andrew66 11-20-2006 12:47 AM

RE: Balsa USA Super Cub Build
 
hey, just thoght id chime in here and say, nice work on the cub! ive been kinda sorta watching this thread, and some others b/c i might build a cub in the near future (just gotta get some other projects out of the way)
keep up the good work


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