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Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

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Old 02-17-2010, 05:30 AM
  #26
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Pins looks like a good mod to do. I'll try that on mine also.
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Old 02-17-2010, 11:21 AM
  #27
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)


Hey Sundevil,

Are you going to be able to fly your Super Cub as good as this?

http://www.youtube.com/watch?v=sfeMLQNe57E

Mitch

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Old 02-22-2010, 06:06 PM
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Been putting off joining the rear fuse because I didn't want to mess it up but I came to the point it needed to be done. My flying day was ruined because of rain so I had no excuses. I made a jig for the fuselage to sit in to keep it square and with a centerline drawn on my building board I went to work. Went well with no issues. Make sure you have a lot of clamps!

Here is the fuselage with the last few braces drying. The initial steps were done with the fuselage sitting on it's base within the guides and the landing gear off.

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Old 02-28-2010, 12:12 PM
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Been working away on the Cub and have made some progress. I just completed the firewall. As you can see I customized it to accommodate the Pitts Style muffler I am using. I will be adding dowel pins through the fuselage side into the firewall to really lock it in place but I couldn't resist putting the motor on to see how it fits. Right thrust and down thrust are built into the firewall.

Next I will finish the turtle deck and the dash. Then onto the tail surfaces or the wings.


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Old 02-28-2010, 12:46 PM
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Not sure what is going on with the photos as they are not thumbnail size so I am going to break the post up.

Photo 2
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Old 02-28-2010, 12:47 PM
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

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Old 02-28-2010, 12:48 PM
  #32
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Last of set, #4.
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Old 02-28-2010, 02:18 PM
  #33
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

One More....
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Old 02-28-2010, 08:20 PM
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Outstanding work! Continue to have fun! Looper
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Old 04-09-2010, 01:47 AM
  #35
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Where'd you go?!? Sundevilpilot...you've got me addicted to your thread. For the love of GOD man!!!...don't stop now...this is a great build![sm=drowning.gif]
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Old 04-09-2010, 10:46 PM
  #36
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Moosehead2,

I'll get back to it shortly....I purchased my first home and moving from the rental into the new home was quite the transition. Had a few things to do around the house to get it up and running and unfortunately I had to put the Cub on temporary hold. The new house is all set up so I will most likely get back to the Cub this weekend. Thanks for the interest!

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Old 04-20-2010, 05:33 PM
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Back at it.....
Today I put together the fuselage formers for the turtle deck. Once they were completed I glued them onto the fuselage. Next will come the stringers for the turtle deck then onto the dash and lower fuselage floor. After that I will build the rudder and elevators.
Formers were all stock with no modifications.
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Old 04-20-2010, 05:38 PM
  #38
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Second Photo...
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Old 04-20-2010, 07:20 PM
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

I'm sure many of your followers look forward to your postings. I'm not able to get to my building as I want, however I love being able to view a well thought out project as yours. Your postings helps remove some those pains we modelers experience when we're not able to build as we would like to do. Your work is very refreshing, it helps to perk me up seeing your modeling photos.

I'm currently gathering the necessary items to convert my Balsa USA J-3 Cub kit to a Super Cub.

Thanks for sharing your project with so many modelers.

Keith
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Old 04-21-2010, 04:55 PM
  #40
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)


Quote:
ORIGINAL: resin


I'm currently gathering the necessary items to convert my Balsa USA J-3 Cub kit to a Super Cub.

Thanks for sharing your project with so many modelers.

Keith
I am curious, what is the difference between the J-3 Cub and the Super Cub, in the RC hobby land? I know that there are dozens of differences between a Real J-3 Cub and PA-18 Super Cub, just asking because I am getting ready to build a ¼ scale Cub myself. Does one have to do their own research as to what changes need to be done to make the Super Cub? Furthermore, why do the manufactures not offer a Supper cub right out of the box (build that is)?
SunDevilPilot, thanks for the thread, very helpful, and inspirational.
TB


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Old 05-02-2010, 07:00 PM
  #41
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Here is where I am currently.

I am still working on the turtle deck, specifically the stringers. I had to bend the 1/4" Balsa corner stringers prior to their installation to make them attach properly. Not sure if the wood I got was a little heavier grade than the original but there was no way I was going to bend them on the fuselage as they were glued. Was easy enough. Just soaked the wood in a bucket of water for about 4 hours then clamped them over a former with a curve cut into it until dry. Much easier this way. Gluing them one joint at a time until I get past the curve.

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Old 05-02-2010, 07:01 PM
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Second Photo.
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Old 05-02-2010, 07:03 PM
  #43
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Last of set
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Old 05-02-2010, 08:29 PM
  #44
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)


Quote:
ORIGINAL: TonyBuilder


Quote:
ORIGINAL: resin


I'm currently gathering the necessary items to convert my Balsa USA J-3 Cub kit to a Super Cub.

Thanks for sharing your project with so many modelers.

Keith
I am curious, what is the difference between the J-3 Cub and the Super Cub, in the RC hobby land? I know that there are dozens of differences between a Real J-3 Cub and PA-18 Super Cub, just asking because I am getting ready to build a ¼ scale Cub myself. Does one have to do their own research as to what changes need to be done to make the Super Cub? Furthermore, why do the manufactures not offer a Supper cub right out of the box (build that is)?
SunDevilPilot, thanks for the thread, very helpful, and inspirational.
TB



I am trying to adapt the J3 to a PA18 in a method that is close to the PA18 but not so far from the J3 that I have to modify everything. I am changing the fuselage shape (PA18 is wider at the nose than a J3), the shape of the tail feathers (Different shape + Counterbalances on elevator), and adding flaps to the wings. I am also modifying the fuse to accept the door but that would have been done if it was a J3 or a PA18.

Hope that helps,

SunDevilPilot

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Old 05-11-2010, 06:54 PM
  #45
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Got the turtle deck all done. Was an easy process with the pre-bent stringers.

I am now in the final stages of the forward fuselage, specifically the forward dash. I had to redesign the area to make it strong enough to support the wires tying the cabin into the wing. I basically copied the balsa USA Super Cub design. Once I glue the formers in I will bend the wires and sheet the dash. Then I can move onto the tail surfaces.

Phil
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Old 05-11-2010, 06:55 PM
  #46
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Turtle Deck 2...
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Old 05-11-2010, 06:57 PM
  #47
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

And the Dash....
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Old 05-11-2010, 06:59 PM
  #48
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Dash 2...
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Old 05-11-2010, 07:05 PM
  #49
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

This is not my plane but these are the photos I found showing a Balsa USA Super Cub being built and how the center section was done.

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Old 05-11-2010, 07:07 PM
  #50
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Default RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)

Second photo of the Balsa USA build.....

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