RE: CA 27% extra
 

also i noticed that when i plug the wing in... i have extra aluminum tubing so the wings are away from the fuse like 1/4 of an inch.. how do i fix this? is it like this?

RE: CA 27% extra
 

xoon,

Regarding the extra length of the aluminium wing tube when both wing halves are assembled on the fuse, you need to measure the extra length and cut it off so that the wings fit snug. You might want to cut off an extra couple of mm ( 1/8 ) or so.

RE: CA 27% extra
 

well i think i read that they put a piece of dowl wood inside the tube and glue it in with ca ,drill and tap it for your bolt.i set a 9" 1/4 threaded rod into my wing cores and nut it up on the inside of my fuse like the big boys do

RE: CA 27% extra
 

xoon,
Attached file with drawing. I think this should work well outlining the red with yellow and then the blue. Not an exact match to the fuse but a good compliment in my opinion. You could also do the same thing on the stab/rudder however it may be difficult with the really small size of the outlines. Let me know if you like this and I'll plot it for you full size.
EXCAP232

RE: CA 27% extra
 

YEAH! man... I LOVE IT!!! thanks so MUCH... the only problem is gonna be cutting out the stars to match the drawing..but i'll get around to that... yeah i would love this to be in FULL SCALE! thanks so much

RE: CA 27% extra
 

Dude, avoid the screw-thru-wingtube metod of securing your wing!!! It is old school and it WILL develope play over time.
I am not sure how your CA wings mount now, but I assume it's either a bolt through the side of the fuse into a blind nut in the root rib (the VERY best way) or it used aluminum dowls that fit into a socket in the fuse and use a pointed set screw to secure them. Not as good as a bolt through the wing root, but WAY better than the bolt through the wing tube. Don't waste your time on that mod, trust...
If you are worried about the wings flying off or something, there are other ways to safety them in place, like a cotter pin through a dowel pin after installing the wing. However, you shouldn't be worried about it...

RE: CA 27% extra
 

well i haven't started the wing bolt... still trying to find more mod and pick the best. as for a blind nut at the wing root sandwiched between the wing root and the wing... i can't do that because the wing root has already glued on to the wing.. please let me know if there are any other mods that are used to hold on to the wing

RE: CA 27% extra
 

You could always drill the root out for a 1" or larger hardwood dowel and drill and tap that for a 1/4x20 bolt. I will say one thing make sure your rear pins are long enough to drill a 3/32 hole and use a cotter pin as a back-up. I have never had a bolt back out but mine seem to be loosening on occasion.

RE: CA 27% extra
 

so is this wut u mean V-SNAP?

drill through the root chord, then place a 1" dowel and then tap that for a screw? wouldn't the dowel stripped w/ all the weight of the wing pulling out?

RE: CA 27% extra
 

Xoon,
Another really simple method and what I will be using on several planes is to drill a 1/4" diameter hole from the inside of the fuselage into the wing root. Do this AFTER the wing incidence is set. Insert a piece of 1/4~20 nylon "all thread" into the wing and glue in place. You will want to score the portion that is inside the wing to give the glue something to grip. Once the glue is cured you can secure the wing with a nylon washer and nylon wing nut inside the fuselage (Use of nylon thread and nut is so vibration doesn't vibrate loose!). For the 27% one bolt per wing panel should be enough if placed in the center of mass. On larger planes use one near the leading edge and another near the trailing edge. Make sure you won't drill though the wing skin.
EXCAP232

RE: CA 27% extra
 

so your method would be cutting off the head of the screw and put it in the predrilled hole in the wing root and glue it in w/ epoxy and use a nylon spacer between the fuse and the nut? as for the SETTIN THE WING INCIDENT... i've never heard this before. thanks for bringing it up, what do i do?

RE: CA 27% extra
 

With all thread there is no bolt head. It is just a threaded rod. I get mine from Micro_Fasteners in 12" pieces. They also sell the nylon wing nuts and washers. One piece will do your plane. Cut one in half so you have 2 each 6" pieces. Insert about 5" into the wing and allow about an inch inside the fuselage. At the field secure the wing panels with a washer and wing nut.

Wing incidence: This refers to the thrust line of the aircraft. Most planes are set at 0-0-0 which means the engine, wing and stabalizer are set at 0-degree incidence. I use a Robart incidence meter to get close and then use a digital level to really fine tune the setting. The better the setting generally the better (accurately) the plane will fly. {Don't confuse this with right thrust which is used to offset engine tork and "P" effect. Chip Hyde did an excellent article on thrust vs. mixing in a recent issue of 3D Flier magazine.}

Check your email for a message.

EXCAP232

RE: CA 27% extra
 

MY TRANSLATION ISN´T THE BETTER AND I WANT TO BE SURE.......

THE PICTURE IS OK? YOU ONLY FIX THE THREAD WITH SOME EPOXI? BECAUSE THE WING IS ONLY FOAM....

SERGIO.

RE: CA 27% extra
 

THANKS a lot.. i do a lot better w/ pictures. thanks.. it looks like the method i'm goin to go w/. now w/ the wing incident... excap232 explained it pretty good, but still confused, can anynbody help w/ this? what us the incident for this extra?

RE: CA 27% extra
 

Won't be able to get your fingers in the CA to easily for a wing nut so pay attention to the area you do this. Also, if the rib is already attatched with the area cutout from manufacturing then your in business. Just cut a piece of 1/8th light ply to the same size as the lightening hole near the tube. Now carefully cut some of the wing foam away for a 1/4th piece of ply with the wing nut.
Put the wing on the plane mark the outline of the wing. Remove wing. From the exterior drill a 1/4" hole behind the wing tube (leave enough room so a fender washer will clear the wing tube) inline with the tube and rear pin. Now tape that piece of wood into the wing and slip it on the plane, mark through your hole onto the wing root. Remove wing, drill mark and epoxy the 1/4" ply sq with the blind nut to your 1/8th ply back side. When dry slip the piece into place with plenty of epoxy or poly glue, slide the wing on (with waxpaper between fuse and wing) bring wing all the way to fuse till fit tight. Put a little vaseline on a 1/4x20 bolt that is just long enough to go through fuse, wing root and blind nut and screw it into fuse. Secure wing and let dry. When dry remove bolt, wing and tube, clean joint of any unwanted glue. Slide wing back on and check fit. If it is ok then just make a 1" disk or plate to go over fuse hole on inside and redrill for extra strenghth. If not open hole in fuse for a good fit, then glue the disk with a 1/4" hole to the inside to align everything.
Remember this bolt is under mostly tension so it will hold if the glue is set good. I have witnessed the heads popping off a nylon bolt in this fashion from a little bending of the fuse sides so consider this.

A good back up is drilling a 3/32 hole in the rear pin top to bottom and just slipping a cotter pin in to to catch if the bolt breaks or backs out.

Good luck with which ever method you use..

RE: CA 27% extra
 

Xoon,
Attaching a drawing with reference lines. The incidence should be 0-0-0 which means the engine, wing and stab should be on parallel lines. There should be no positive or negative incidence to the wing and stab and no up or down thrust in the engine. Since your plane is already built there may be little you could do to change it now. Most likely the way this plane is designed it will not be off much if at all. I have a plane in my hanger that had almost 3 degrees of positive incidence in the stabilizer as received. Even after modifications it doesn't fly well to me. Most observers think it flies really great. Once you have a plane properly set up and trimmed you will understand the difference. You can do some mixing in the transmitter however most settings only work for one speed and angle of attack so as you fly it will change. Let me know if this gives you the information you need.
EXCAP232

RE: CA 27% extra
 

thanks a lot for the pix... like i said i work better w/ pictures. thanks again. but how do i set this on the extra because it got two dowels sticking out at the end off the wing root and it goes into the fuse, and i can't move it up or down when it is pluged into the fuse. so is this already done for me?

RE: CA 27% extra
 

Well set the fuse level. Use the hatch opening to set this up. Check the stab, it should be at 0. Now check the wing bolted to the fuse. It too should be at 0 (both wing halves). If not then what you can do is open up the holes in the fuse for the pins and set the wing to zero. Cut some plywood doublers for the inside of thefuse in the pin area with a hole for the pin and glue them in place with the wing at 0...Before you do this though check and make sure the stab is set to the fuse and not the wing. Then check the firewall is set to the fuse also. If all are 0-0-0 and the fuse is not then keep it there. If not then bring them level with the fuse. If at all possible you want the incidences 0-0-0 to the fuse thrust line.

Confused yet?[&:]

RE: CA 27% extra
 

lol... yea.. way confused. how do i set the fuse level first and what do i use to check? and don't the fuse have built in right and downthrust?