rbrown3rd, yea but once ther trimmed out they fly like a kite...i had mine in its first thermal last week. flew it for 45 mins on 750mah usage. with the small eagle weighing 14.7 oz. with a 48in wing, im hoping the 80in. version floats better. plus i can see easier at higher alt. randy.

 

wile waitin for foam, i decided to try to clean up the 8 foot work bench a bit...after movin all the glues to one pile, i thought, man look at all the sticky stuff, lols. crazy all the different achieves ther are...

 

rbrown, the 48in span eagle files are on my build log on page 10. randy.
http://www.phlatforum.com/viewtopic.php?f=107&t=145&start=225

 

gluing the first 9mm bottom skin on....the gorilla white glue is thinner way easier to work with than the sumo...the wing took the whole panel of the depron sheet, on all four sides. randy.

 

This is really nice Randy!! You need to give us some pointers on "air-brushing" like you did on your smaller version...

 

thanks for the positive comments....just as important to me is negative input...others don't look at the negative aspects the same way i do....i don't mind getting it, as its a learning opportunity for me. tv casulity knows this personally, as he was kind enough to give my one of his warbird wings to dissect learn from. randy.

 

got the other wing half glued up...man my 8 foot bench went away on me, lols. before i skin the top, i think i will bend up the wing tips...this is a tricky job with the heat gun. if something gets botched up, it will be easier to remove and remake the wing bottom. i was going to bend first, but was afraid of twisting it. also the gorilla glue expands like crazy, be careful if you use this stuff. after seeing the bottom wing half's glued up, i gotta man this thing is huge...i read real bald eagles have this kind of span...man them big birds, lols. peace, randy.
made a mess on first half, be careful if using gorilla glue!!

 

lols, jeff....

 

wing is coming out more porky than i planed....as of now it weighs 15.5oz. thats without the top skin on yet...as i look at i used more glue than i needed. im thinkin i could of made this wing with the same construction as the lil one. but i wanted a clark-y foil. maybe this 82in. span pork chop will fly. as of now i guessin at a 26oz. bird im still going to try the hacker A20-22L and if it don't cut the mustard i have a A30-28S that will do the trick. i guess I'm lucky its not a 3-D model. id need around 350watts, lols. the big foil should lift the load. randy.

 

Now, that what you call a wing!!! Great job RJ..

 

15.5oz's is good for that size of wing. I'm sure it will probably be a good pound once the top gets on. I'm sure it will fly really well though.

 

the wing is just gonna be foiled.....the wing tip bends are just straight bends on a angle. ya don't to nutty with this point of the build....it can be messed up real fast. i set-up a big plastic tube, as something to bend the tips around...you have to air cool, wile holding so to minimise spring back. then i water cool in my laundry tub, before i measure the tips to make equal. best thing is to take your heat gun to scrap, and test out. its very tricky for me. i got the tips good in one try...ready for top skin...all i have is 6mm sheets. i went to the local hobby store, but he has only 13in wide strips. i am thinkin about gettin it and joining, but i don't like that to much. i suppose it wont matter. or i could use the 6mm i have. btw the pipe is clamped down to table... randy.

 

Here comes some light hearted negative

I agree 100% with the above quote. I'm on edge to see that reflex.(rim shot please) It's the heart of a great flying wing. I've built with the trusty 'Y' foil in a variety of thicknesses and though its a great floater with a long moment it never worked good as a flying wing or even if short coupled for that matter. Sure you can crank in up and get a glide but the speed/pitch envelope is super narrow. Sorry, I know its a little late.

The A30-28S I hope that was a joke because it was a good one on my side The 20-20 will be fine. Even at 50oz. AUW. Mega grunt is not what a foam 'Y' foiled flying wind needs. Smooth solid power while using pitch to control a steady air speed is the answer IMHO.

As an example I scratched a full house 156'' span 4.5 lbs. sailplane and flew it on a 1/2A powerpod. Climb was shallow, about 1:100, but it worked. And as soon as it hit lift it specked out in no time.

 

66tbird, i am comparing everything on this build to my 48in. span eagle. im starting to figure out it really cant be done...at least i know the scale and proportions are good. btw, i was serious about the bigger hacker, lols. i always have flown ducted fan jets, pylon racers, that have exceeded 150mph. also my 3-D models always have had half throttle hover power. i have to admit even on my smaller eagle, i have 150watts to a 14.7 oz. model. i know i have to learn more about being able to use less power on the floater type planes....believe me, im all ears to all the experienced r/c flyers with any input. randy.

 

man erik, just think what you will do with the big eagle....man with my old eyes, im prolly good for 100 more feet, lols...maybe we need a phlatboyz "how high" competition??, lols. randy.

 

While going through my bag of templates I found the one I called 'The Winner for TDFW' and darn if it it's a split between the 106 and the 75. It was a great hands off TD flyer.

It's just info for the next build.

http://www.b2streamlines.com/PWairfoils.html