ideaz1(at)sbcglobal.net Guest
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Posted: Sun Nov 02, 2008 5:34 pm Post subject: Wing Spars- a comparison(non-scientific) |
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I have borrowed a set of drawings for the RV-6 and compared the wing spar construction. Yes I know the RV is heavier etc., but... the wing spars in the RV: 1. meet at the center of the fuselage
2. .040" main spar web and .040" doubler(spaced to form a box type spar) 70" from center of fuse outward
3. spars boxed in w/ .040" (601 is .032")
4. spars held together w/ 1/4"x12"4130 steel plates w/5bolts ea.side, top & bot. etc.
This is just a cursory comparison but seeing the differences really was an eye opener for me.
I suspect this design is less than 10 lbs. extra but sometimes it's worth it to have extra weight. I think sometimes we sacrifice our safety just trying to lighten our planes to the extreem.
I don't know where to go with this... I wouldn't feel comfortable making changes to the 601 design since I'm not qualified, but???
Dirk
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