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Building Tips and technical articles. => 1/2 A building. => Topic started by: John Crocker on July 01, 2007, 06:12:09 PM
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Okay, I'm hooked again. Got back into this mess about 2 months ago after being gone for 25 yrs. Did a couple of sheet wings for my boy and I and the first one met a greasy ending yesterday in some wind that I should not have been flying in.
So heres my question. Going to put together another scratch built with a built up wing (something easy like a baby clown knock off), but have no idea on the rib thickness. I'm thinking 1/8" balsa, will that be enough? Going to build the body out of 1/4" balsa and beam mount a norvel .049 with a 1 oz clunk tank.
Also, whats the best thing to cover with now. Monokote was just coming on strong (never used it)when I got out of models and I know there are several other items out there now. I always used tissue, silk or lightweight nylon (which I have in spades at work). Thoughts?
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I use 1/16" th. rib material on 1/2A's.
you can add 1/8" sq. spars and LE and TE of your liking.
R....
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John
When I built my set of Barnstormers I used 1/8 for the fox 35 powered full size, 1/16 for the WenMac .049 powered Baby Barnstormer, 1/20 for the Cox .020 powered IBTW Barnstormer and 1/32 for the Cox .010 Micro Barnstormer.
Hope this helps.
Clancy
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John,
Our new line of 1/2a control line kits with build up wings use 1/16th inch thick ribs in a 28 inch wing span and 6 inch chord. The fuselage is 1/4 inch by 2 inch by 23 inches. That's it.
Larry
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1/16" ribs are fine, use spars top and bottom (1/8"x1/4"? 3/32"x3/16"?). Be sure to put 1/4" square hardwood beams at the motor mount, with thin plywood (1/32" is enough) doublers.
--Ray
P.S. Covering, no-one's addressed that yet--I've been using "microlite" by Coverite, an iron-on film like Monocote that is very thin and light, perfect for 1/2A. Silkspan and dope are still used a lot.