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Balsa USA Super Cub Build

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Old 04-14-2007, 09:31 PM
  #126  
tom mathys
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Default RE: Balsa USA Super Cub Build

HEY TONY,,,i went to the toy store today.omg , i hate to waste the weekends.yep! i purchase the hareware to copie yours.they have everthing you used.ty,ty,ty.i looked at the servos there too.110,00 for the 330 in oz?is that a little much?well what i have in this bird now.thats a drop in the bucket..
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Old 04-15-2007, 07:17 AM
  #127  
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Default RE: Balsa USA Super Cub Build

A picture is worth a bunch of words. Float mount and cabin top on the J3.
Edwin
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Old 04-15-2007, 07:31 AM
  #128  
Tony Hallo
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Default RE: Balsa USA Super Cub Build

The J3 and the Super Cub are framed different, on the SC F4 runs to the top of the fuselage, hence the confusion. Your picture clarified this difference. Thanks Edwin.

The plans show the rear plate behind F4 on the SC, centered right at the insection of diagional braces in the lower left hand corner of the photo, I used 3/8" balsa stick instead of the plate.
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Old 05-01-2007, 11:10 PM
  #129  
tom mathys
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Default RE: Balsa USA Super Cub Build

ok guys,,,alittle help here now.2 questions.remember its a balsa usa 1/3 j3 cub.at the flying field,the guys think 330 oz servos are over kill.they think 170 will work just fine for all surfaces.plz tell me what you guys think.i dont want to loose this j3 over a few bucks.ok,2nd,they think a 62cc size engine is to much.50 cc would be way more then enough.im going to put it on floats some time.these two questions answered will help me move forward.thanx guys.
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Old 05-02-2007, 06:20 PM
  #130  
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Default RE: Balsa USA Super Cub Build

tom , I think 330 oz servos are overkill but i you have them use them(170 oz is more than enough) .I have seen several 1/3 scale J3 and SC versions flown on a G62 (plenty of power).
A 50 cc will fly it well ,62 cc even beter if float flying.
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Old 05-02-2007, 08:19 PM
  #131  
tom mathys
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Default RE: Balsa USA Super Cub Build

hey chris.thank you for your input!! i really appreciate all your help.again i dont want to loose this cub.any other suggestions from you guys what to use??or power it with?i dont want to cut the cowling to much.id like to leave it clean looking.does anyone make a 1/3 scale one piece cowling out of fiberglass?
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Old 08-17-2007, 09:22 PM
  #132  
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Default RE: Balsa USA Super Cub Build

What happened??????????????[][][][]

I need to here more! More pics! love it!
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Old 08-17-2007, 09:38 PM
  #133  
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Default RE: Balsa USA Super Cub Build

I'm still looking for a true scale tail wheel.
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Old 08-20-2007, 01:08 PM
  #134  
Aastan
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Default RE: Balsa USA Super Cub Build


ORIGINAL: Tony Hallo

The plans call for a nyrod on the elevator, personally I don't care using these on control surfaces so the elevator servo will be mounted inside the fuselage near the leading edge and connected with 4-40 ball links. Access to the servo will be under the aluminum cover for the jack-screw. The kit provided a 1/4" X .050" piece of steel for the elevator control horn that gets silver soldered onto the 13/32" tubing that the elevators plug into. I made up two horns that are more robust and provide a 360 degree solder joint. A 4-40 ball link will be captured between the horns. The original horn is laying near the trailing edge of the horizontal stabilizer for comparison.
Tony Hallo

What servos are you using for rudder and elevator? Great work, the kit is outstanding.

Aastan
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Old 08-30-2007, 04:12 PM
  #135  
Tony Hallo
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Hitec 5955 on elevator and rudder. Some may thing overkill, $700 kit, $1200 engine, $400 covering materials, countless hours of work, does it much sense to skimp on the devices that are controlling the machine?
I just about ready to start back on the project, work, houses, boating, flying, and some Miller Lite along the way has pretty much consumed the summer. The days are getting shorter, fall is just around the corner, I'll be back!!!
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Old 10-21-2007, 05:15 PM
  #136  
Tony Hallo
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Well after some off I'm getting back on this project. Here's some photos of the tail light, I'm not quite happy with the results just yet and need to get to Radio Shack for stock. I used a large LED for the lens, drilled the inside so that a smaller LED fits inside. It's not just right and hopefully the next generation does it.
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Old 10-21-2007, 05:17 PM
  #137  
Tony Hallo
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Default RE: Balsa USA Super Cub Build

Here's a close up photo of the full scale light. I scewed up on the screw location.
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Old 10-21-2007, 05:22 PM
  #138  
Tony Hallo
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Default RE: Balsa USA Super Cub Build

Got a very nice dash from Goebel, less than $30.00, the photo from low cost camera doesn't do it justice. The two red lights on the dash will be replaced with LED's . One for the main radio power and one for the ignition.
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Old 10-21-2007, 05:34 PM
  #139  
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Default RE: Balsa USA Super Cub Build

Tony,

The tail light look fine and if your next generation looks better, great.
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Old 10-21-2007, 05:47 PM
  #140  
Tony Hallo
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After several long discussions at the fly field this past summer, the owner finally surrendered and conceded to upgrade the power distribution system. Settled on the Smart Fly sport system, two HD regulators, and their optical ignition cutoff. The system really made the radio installation easy as each channel has three separate outputs. Just plug the extensions in that were previous landed. The regulators will be set at 5.7 volt as my previous experience has indicated that Hitec digital servos get a little noisy above 5.8 volts. The battery will be a 7.2 volt sub c sized NiMH, the owner is not ready for LiPolys just yet. A single Super Rocker switch will be mounted under the front seat. We abandoned the previous plan to locate the switches under the battery door on top of the fuselage.
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Old 10-21-2007, 06:15 PM
  #141  
Tony Hallo
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Now that the radio installation is finalized, I want to finish off the interior details before covering the fuselage. The front seat provided with the kit appears to be about 1 ½” low. A visit to the Supercubproject.com provided the information necessary to construct scale like front seat support. My research indicates the top of the seat should be about level with the bottom of the side windows, in my case, the front of seat will be 3 ¼” above the floor. The original seat mount was about 1 ½”. The mount I’m building is constructed of ¼” and 3/16” brass tubing. The connections are silver soldered. I’m replacing the ABS plastic floor with 1/16” plywood and building a scale like torque tube and control sticks. Right now I need to get to LHS to stock up K&S tubing, I’m out of stock.
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Old 10-21-2007, 06:17 PM
  #142  
Tony Hallo
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Default RE: Balsa USA Super Cub Build

John,
Thanks again for the photos, they are coming in handy right now.
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Old 10-21-2007, 08:25 PM
  #143  
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Default RE: Balsa USA Super Cub Build

Tony,

Glad they are able to help with your build. I was lucky getting them. I was visiting my brother out on the eastern end of Long Island, NY, took a trip out to Southampton Airport and the Super Cub (registered in Florida) was parked out side the hanger while its hanger mate was being worked on. The gentleman (not the owner) there allowed me to do the walk around and then kindly opened the Cub up for some interior shots.

What you have done so far looks good, keep up the good work.

My S-Cub has been put on the back burner while I work on the Pica YMF Waco project over on the Vintage and Antiques forum. Living near St. Louis allows me to visit Creve Coeur Airport that has many Golden Age aircraft based there (no Super Cubs unfortunately), a museum with about 60-70 aircraft (most of them are in flying condition) with 12-14 Wacos in the collection (no YMF). Many of the details are common between the different Waco models.
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Old 10-26-2007, 03:33 PM
  #144  
Tony Hallo
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Here's the final addition of the front seat mount, the main legs are 1/4" K&S tubing and the crossbracing is 3/16" diameter. All joints are silver soldered together. I made up variuos jigs along the way to hold joints in place while soldering.
Onward to the torque tube and control sticks.
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Old 10-28-2007, 05:42 PM
  #145  
Tony Hallo
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I making the torque tube out of 1/2" K&S brass tubing, the control sticks will be 3/8" diameter. The current plan is to actuate the torque tube with two small servos. Now that we have all those slots available in the power expander, the hook up will be easy. Shown below is one the many jigs used to hold the parts while soldering, most are one time use as the jig is normally on fire long before the part is hot enough. The tube as shown weights 2.0 oz. I'm hoping the finished product adds less than 6 oz.
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Old 10-29-2007, 10:40 PM
  #146  
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Here's the almost finished torque tube assembly, next step is to resolve the control linkage for the tube, I need to make two pulleys and rig the cables for elevator function, make up an arm for the aileron function and install the servos. The control sticks are mock ups only, the final product will be aluminum once the LHS get the stock in. Once complete I think I'll move onto the throttle controls and such.
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Old 10-30-2007, 08:14 PM
  #147  
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Default RE: Balsa USA Super Cub Build

Hey guys take a look at the tail feathers for my 1/4 scale L-4 what you see comes in at a whapping 7 ounces. Do you think that is light or heavy?
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Old 10-30-2007, 09:07 PM
  #148  
Tony Hallo
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Default RE: Balsa USA Super Cub Build

Very nice, are the bows laminations on a lite ply spline?
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Old 10-31-2007, 06:33 AM
  #149  
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Default RE: Balsa USA Super Cub Build

For the rudder it is a strip of 1/16 basswood with 4 strips of 1/16 balsa in a laminate layer using yellow glue. I did not use any light ply in the rudder. For the elevator and stab I did the same but then glued that onto a light ply rib that runs in the middle of the surface. The trailing edge of the stab is a balsa ply balsa layers. The brass tubing is epoxed to the balsa. I feel I could get away with out the ply rib on the elevator but like the extra strength. I may do a elev buildup and use a strip of carbon in it to see how it compares to the ply rib one. I had though of using carbon for the center section of the stab but it did not work out for me.
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Old 11-03-2007, 08:38 AM
  #150  
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Default RE: Balsa USA Super Cub Build

Hello, i am building a 42% J3 Cub, 3w112cc engine, so far total weight,48 pounds
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