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Old Feb 03, 2013, 02:15 PM
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I'd make sure there isnt a gap or airspace under your sheeting, so as when you draw the bolt up tight it doesnt draw in your sheeting.If there is a gap or air space i'd fill it in with scrap balsa. Also like Tom said, putting a thin sheet of lite ply over the area where your bolt passes thru will help tremendiously.( good idea) If you do go the rout of tapping the wood, you should harden the threads with thin CA,then run the tap back thru, thats one way to harden the threads. Pretty soon you'll be asking how to cover this thing!....Gene
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Old Feb 03, 2013, 03:02 PM
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yea i have alot of scrap and good balsa and ply lying around the workshop lol. ill build it up. Im not sure what the wing bolts are, i havent opened the hardware bag yet. I was going to finish building before i hindged anything and installed hardware. Ill build it up to take up the gap. Thats what the manual said was to tap and ca the threads. I never tried that way before. I just dont want to go back and fix it afterwards
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Old Feb 03, 2013, 03:57 PM
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Well you doing things right & asking questions when in doubt. Thats how we all learn. The more you build, the easier it gets because each time you build,you learn a little more. Its a good feeling to fly something you built.....Gene
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Old Feb 03, 2013, 07:26 PM
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Don't worry too much about making mistakes. We all make them.

Besides. It's only balsa. It can easily be fixed.
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Old Feb 04, 2013, 11:27 AM
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United States, IA, Rockwell
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Originally Posted by TomCrump View Post
Don't worry too much about making mistakes. We all make them.

Besides. It's only balsa. It can easily be fixed.
Your Contender is looking just fine. Like Tom says, don't worry about mistakes. Heck, I've had planes that were nothing but one big mistake. The first mistake was buying the kit

Ken
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Old Feb 04, 2013, 06:18 PM
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yea I've built 3 arf's and want to step into kits and i thought this was a easy enough kit to be my first. Didn't do much building this weekend. I was to busy getting ready for the Raven's superbowl game and we came home with a victory. AWESOME but back to building tomorrow
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Old Feb 04, 2013, 10:03 PM
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ok got some time so i mounted the leading edge sticks and started sanding them. tell me what you think so far
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Old Feb 05, 2013, 12:42 PM
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Originally Posted by chaos2984 View Post
ok got some time so i mounted the leading edge sticks and started sanding them. tell me what you think so far
The photo is a bit blurry but it looks like you've taken a bit to much off at the glue line of the leading edge. (the sheeting is getting thin) It is an easy thing to do this and I'm guilty of it myself. I've found if you take some masking tape and place it on the part you don't want sanded it helps quite a bit. Sand to the level of the tape and then remove the tape. You only have a tiny amount to sand and it's much harder to over sand the sheeting in your case. Other wise it's looking good.

ken
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Old Feb 05, 2013, 06:47 PM
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yea when i was rounding the edge i sanded into the sheeting by accident. and didnt notice it till it was done. will it be a problem or no
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Old Feb 05, 2013, 07:36 PM
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yea when i was rounding the edge i sanded into the sheeting by accident. and didnt notice it till it was done. will it be a problem or no
Is it the whole length of the wing or just one end? If one end or spot, I would be tempted to fill with some light weight spackle. You can get it at any store with a hardware department. It is the container when you pick it up it feels empty. It sands like balsa but has no strength of its own. Just fill the "empty"spot and sand to the correct shape. Structurally I don't think you will loose much strength, it will just mess with the aerodynamics of the wing a bit and look kind of funny. You might not even notice the different fly quality. If you could get a couple of better photos, from a couple of different angles it might help us to make a better diagnose if it is a problem.

Ken
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Old Feb 05, 2013, 08:31 PM
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ok ill post some more pics. I worked on the wing a little more and got half of the LE sanded round. I found a technique that works so i dont sand the sheeting and i can still sand it round.
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Old Feb 05, 2013, 08:36 PM
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pics of leeding edge rounding
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Old Feb 06, 2013, 10:45 AM
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If your fussy about the shape, just throw some of the light weight spackle on the wing and sand to shape. I think you'll be fine.

Ken
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Old Feb 06, 2013, 08:55 PM
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i think it will be ok. But this is my first build. You have to tell me if it will be ok.
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Old Feb 06, 2013, 09:01 PM
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Originally Posted by chaos2984 View Post
i think it will be ok. But this is my first build. You have to tell me if it will be ok.
LOL It will be OK

Like I said, if you want to, a little of the light weight spackle will hide your mistake. I've been there If this is the worst mistake you ever make you are better than 99% of us.

You are doing fine!! Keep up the good work.

Ken
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