Carl Goldberg Anniversary Cub - Page 6 - RC Groups
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Jan 25, 2013, 07:20 AM
wow. I must have been completely distracted when i got to that part because I totally skiped it. Guess its a bit late for that now. must be close enough though.It had a really good first flight, even with the elevator linkage issues. Very little rudder input on take-off roll, lifted off with a very gentle clime on its own. I'm happy with the way it flies. Guess i got lucky
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Jan 27, 2013, 12:06 AM
Registered User

Covering and lightening bolts

Well I have spent today working on covering the fuselage, except for the top and drawing up and cutting out the lightening bolts. I found a PDF file online with the actual layout of the lightening bolt along with the placement of the numbers and decals for the real Piper Cub. I simple had to reduce the dimensions according to the scale of the model.
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Description: View of cockpit
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Description: Looking almost ready to fly, but the tail feathers are not permanently attached yet.
I have order the Sig dummy engines for the 1/5 scale cub to use on this Goldberg model. I will post the progress of the cowl and the rest of the build as they are completed.
Jan 27, 2013, 12:54 AM
wood is good
loNslo's Avatar
Originally Posted by mustangherb
... I found a PDF file online with the actual layout of the lightening bolt along with the placement of the numbers and decals for the real Piper Cub...
Care to share?
Jan 27, 2013, 08:27 AM
ARFs Are Me
TomCrump's Avatar
I thought that each lightening bolt was individually masked, and that no two bolts were exactly alike.
Jan 27, 2013, 09:33 AM
Fiberglass specialites makes one with the cylinders molded on if you prefer.
Jan 27, 2013, 09:39 AM
Hobby King Hater
Kimber's Avatar
Originally Posted by TomCrump
I thought that each lightening bolt was individually masked, and that no two bolts were exactly alike.
That is true. There were specs for the location, but all were
hand done so they varied.

The same was true for planes during the second world war.
A lot were done in the field and artistic opinions varied.
Feb 04, 2013, 07:23 PM
Registered User

Almost complete

Well the project is almost complete, minus the receiver and prop. The AUW of the model was a little disappointing at 7.8 lbs., as I was shooting for a maximum of 7.5 lbs.. As this was my first kit build I am proud of some things and disappointed in other parts. Overall I have learned a lot during this build and I am sure that I will learn even more on the next build. I have a new radio on order (since November) with receiver from tower hobbies that I will be braking in on this Cub, so I hope to get my maiden flight in sometime in mid to late February. As soon as I finalize all of my settings (engine thrust, COG, etc.) I will post on the build log. Thanks for all the input and help from everyone!
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Description: Side shot of nearly completed CG CubName: IMG_1782.jpg
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Description: With Skyblue 5S-4400 mAh/40C battery full forward, the plane balance out at 3-3/4"
Feb 04, 2013, 07:45 PM
Hobby King Hater
Kimber's Avatar
Ours came out to just over 8lbs so you are fine.
Feb 04, 2013, 07:59 PM
wood is good
loNslo's Avatar

It really turned out well.
Feb 04, 2013, 08:28 PM
Student-Can't Fly Yet
The Violets's Avatar

Really nice work, looks like a gem! I enjoyed following the posts, it's on my list for next winter's build.

Feb 04, 2013, 09:51 PM
Registered User
Thanks everyone for all the nice comments.
Feb 04, 2013, 10:25 PM
Chess club geek with wings
blunight's Avatar
Beautiful job mustangherb!

Thanks to your thread, IoNslo's thread and Kimber's beautiful photos I just purchased a CG Cub kit that was started years ago but never finished...

Please give us a flight report when you get to fly yours!
Feb 05, 2013, 05:42 AM
Registered User

Flight Report

blunight ,
As soon as I get her into the air for her maiden flight I will be sure to post a report on her performance. If I can get my youngest daughter to record the flight I will post a YouTube video, but she is pregnant so I am not sure I can get her to the field.
Feb 05, 2013, 07:07 AM
flew my on sunday. first flight after reworking elev linkage. had club test pilot do the take off and trim out, then took the sticks. always a thrill to fly a plane you built from a box of wood and sheets. she sure sounded great with the 4 stroke popping away. sure wish i could have sprange for the Saito twin cylinder 4 stroke. now that would look cool with a real cylinder hanging out of each side!
Feb 05, 2013, 09:58 AM
Visitor from Reality
Nice job Herb. Weight sounds fine, my Sig 1/5th Cub came in at 8lbs and would fly so slowly without stalling that the controls pretty much stopped doing much. So your Cub should be fine flying at that weight.

When you test fly your Cub, take some pre-flight photos - unless you're one of those guys who doesn't believe in pre-flight photos! - and don't worry about video. Just pick a nice calm day with few folk at the field, get yourself into the test flight concentration frame of mind, get it straight in your head what maneuvres you're going to do and then make that short but meaningful first flight.

Mine usually involve getting to 'three mistakes high', checking out steeper bank angles, pitch and yaw control effects. Position into wind and try stalling - one power off, on the glide from level flight, the other from a noticeable climb with a little power. Then fly the landing pattern a couple of times without the descent portion, to establish what your model looks like in the circuit. Then take a deep breath and fly a pattern to land. Don't overshoot unless it all goes a funny shape - then you get back to height and straighten her up for the next try.

Good luck


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