ok, doug sent me plans but i asked for wrong ones! he sent me 40 size, i needed little one. so, opened plans pdf at 25%, measured and multiplied by 4, got the basic fuse.
cut out where the wing, mount, stab mounts are gonna be. save these cutouts, they are the patterns for the balsa/ply mount ans balsa stab saddle. simple, huh?
fuse pretty much done. will inlay tube after mount areas installed. flip it, draw out 1 for your buddy, draw a few more for the heck of it. draw 1 on cardboard for future builds.
flipped around clothespins are the best! just take apart and reassemble backwards. like tweezers, and el cheapo!
carve/sand a groove in mount and stab mount. i shoulda marked end of tube on stab mount, didn't need to groove whole thing. but since mount 1/2 and tube 1/4, poly glue will fill in.
cut slabs right size, mark centerline at corners. pin on rib templates.
set cutter at 1.6 amps.
put some light weight on panel. if it slides you pulling too fast.
voila!
cut other, glue and tape together. all left is t.e. and finish sand.
faster, tougher, as light as balsa. will get 3 wings out of a 16-1/2 x 4' slice of foam. that's 15 wings for 20 bucks. the fuse is packing from ikea style bookcases.
Looks like another great foam build. Keep them coming WF! I went to the lumberyard last weekend and bought a good sized pile of foam. hopefully I can turn that foam into something as neat as you do. :tu:
braved wally world this morning, didn't go bluto on anyones guitars, so that's good.
glue on a t.e. when dry, cut like this and glue other. w.f. says why butt join any spar at highest stress location? that's bad engineering.
slice into foam both sides of tube. only a little over 1/2 way thru fuse. dig out foam with xacto and run screwdriver flat across flaking beads till tube fits into grooves. i dumbassed out, put glue where tube goes when i glued fuse on! had to chunk it off.
anyway, put glue on tube except where wing goes. run bead in corner of fuse where wing goes. insert tube, spin back and forth a few times to spread glue. wipe off where wing goes. tape over to keep foam where you want it. hammer pins in at angle where tube hits groove to hold it in.
mark wing 3.5" back from l.e. put square on it, mark 4" both way.
cut with sawzall blade. cut a 1-1/4 x 4" utility ply sub spar.
glue in and tape over.
note grain of utility ply? it's basically a 3/32 core with a ply of 1/64 on both sides, so better to orient this way. works like 3/32 bass with shear webbing, kinda. a little brittle, but super cheap and works well. i mean, a 4x8 sheet for 10 bucks will make a lot of spars, mounts, flite boxes (yes, i made my own design flite box. sent a couple kits out, too- gus has 1.)
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
The Profile Brotherhood RC Forum
936.2K posts
4.8K members
Since 2003
A forum community dedicated to profile pilots and 3D RC flight. Join in the discussions on building, repairing, designing and crashing profile planes. Hang with the Pro Bros, buy and sell and more!