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Old 03-09-2013, 07:59 PM   #1
earthsciteach
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Default Balsa Repair Advice

I maidened my Maxford USA PT-17 in very windy conditions last weekend. Now, I am in the process of repairing.

I have two damaged ribs on one wing that I need to access through the covering. I have no experience working with covering, so I'm seeking advice.

Can I somehow detach the covering from the wing and reattach or do I cut and patch the particular area I need to access?

Thank you!

All of my landings are three point landings if you count the spinner, too
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Old 03-09-2013, 09:28 PM   #2
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You are going to have to cut and patch to fix the ribs. Just had to do that myself to a plane. I don't know what they use for glue with the Maxford but check out the glue joints on the fuselage also. Mine was a easy crash, but i was surprised on how many glue joints popped in the fuselage even though wing looked like it had the most damage.

Mine was a GP Electric Stick they use a glue that almost resembles hot glue that doesn't hold well.
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Old 03-09-2013, 11:01 PM   #3
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Thank you Gramps! I've cut open the wing and CA'd the ribs back together. I'm going to scab the two broken ribs with thin balsa. I'll give the fuse a good check - I definitely appreciate your advice!

All of my landings are three point landings if you count the spinner, too
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Old 03-10-2013, 12:53 AM   #4
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Now the key question is can you find the correct color covering to match the original one. Hardest thing to do with some of these ARF'S is finding a matching color.
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Old 03-10-2013, 03:46 AM   #5
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Yep, that is my concern. Looks yellow to me, but which shade? Argh!

All of my landings are three point landings if you count the spinner, too
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Old 03-10-2013, 04:48 AM   #6
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Oh man, one thing about bipes, you get good at repairs...

Ask me why your DX5e is doomed... and how to fix it.
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Old 03-10-2013, 11:39 AM   #7
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My way is to carefully slice the covering and peel back. Bit of tape to hold it out of way.

Take thin balsa or thin foam and create a doubler to sit alongside the broken rib ... glue in place with white PVA glue. I only use CA as a last resort - it makes for an brittle repair.

Once set - I then lay covering back with a narrow section of clear tape upside down .. a piece of masking tape on top to allow me to pull the covering before sticking down to the clear tape. Do for both sides of cut - often you can get the edges to meet again and a quick waft of hot air over and bingo.
If not - then a patch of same covering with no sharp corners ... best is the oval shape ...

The old trick was of course to add another Decal ! to cover it up.

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