Thanks, all for the commentary. It actually looks a little better in real life tha in the pix. BTW I left out the pix of the bottom so here's a couple more...
'cote added about 5 oz. Some will argue that 'cote makes it a second class bird - well for 5 oz finish weight a doped finsh would have been REALLY 2nd class too. So Thats kinda damned if I did or damned if I didn't.
I had over $100 invested in 3 grades of silkspan, Nitrate clear, butyrate clear, Lite-coat clear and thinner and did not use them! Had not yet purchased colored dope. By contrast I used a little less than 2 rolls of moneycote for a total cost of around maybe $25 and went from bare wood to what you see in a couple days.
Bill & Randy:
I think you will be amazed at how strong the wing is - I know I am. As you know an I-Beam has nearly no torsional strength until it is covered. With the 'cote this wing stiffened up extremely well - comparable to a C-tube. Note that a swept wing reacts to bending by twisting - the tips want to wash-out when you flex it so the torsional rigidity was my quest. Note also an electric in governor mode should be able to RESIST speed build-up in the wind, thus keeping the structural loads a bit safer. At least I think I've sold myself on the idea!
The I-Beam is built stronger than the plans show - is it enough? Frankly if the wing folds I think it will be because of a structural mistake in my I-beam construction - not due to the $$$cote.
Mike G:
Looks like 51oz RTF and balance should be close. This is WAY heavier than a lot of folks are doing, but it is the same weight as Jack's original (as spelled out in his article). I should have substituted thinner sheet wood in more places and been a lot pickier about what I used. Jack did not show a CG so I constructed it based on MAC etc. I have about 2" to slide the battery pack, and might be able to get away with the next size shorter motor - for a 1 oz save there. It will be close enough to fly but of course I'll adjust to my own tastes. If its Tail heavy I may have to do unspeakable things to move the CG forward - but I'll first try handle spacings & such...
So I guess I can say that I met a goal in that it is (or soon will be) finished in time for VSC - even if I cannot attend. If Mother Nature would just help a little we might be test flying HERE by then!