i have 2 wings for my duraplane, think it is possible to make it into a bipe???? it would be even more ugly than it is now, but....

brschmid,

go for it! Just be sure you place the wings at least 1 wing chord apart. 1.5 would be best.

Jetts

when i start getting bored with it, i think i will. should i do the other wind under the body or above the current wing? the problem with under is the gear unless i move it forward and make it a tail dragger.

how about aileron control? combine both wings together so they both move or just use the tops or the bottoms.

here is a pick of it normally

or should i move the gear forward and make it a staggerwing

Lots of things to think about here......

I've got a Sturdy Birdy so I know roughly the hardware layout...

1. If you mount the 2nd wing under the fuse you ain't gonna get the 1 chord distance mentioned earlier...

2. You'll have to cut through the wing and mount the servo on the bottom and use new hardware or pull the ailerons and swap the torque rods..

3. You need to build a support for the bottom wing to ensure that it has the correct incidence

4. You'll need some sort of stagger as the wings will be close, then you'll have to figure out the new CG, tricky as there is virtually no scope for moving things around in the fuse when it all taped to a rail...

The easiest way by the looks of it is to mount the wing just forward of the main gear, then the CG will need to shift forward a bit. One way to do this is to put a bigger engine on front

I wouldn't bother to change the gear to a tail dragger. The SB is a taildragger and it's a real handful on the ground..

ok, should i just devise a way to mount the wing above the normal wing. hardware is gonna be tricky, maybe i can epoxy in some plywood to mount braces too???

Actually, this will be easier......

You need to make two parallelogram frames (to create an offset).. The height needs to be about 9" (one wing chord apart) the length needs to be a bit longer than the chord of the wing. The two frames can be held together by dowels at a distance just over the width of the fuse.
This way, you can slide the frame over the bottom wing and hold it on with elastic bands through the dowels. The top wing can also be held on with bands.

This way, you can fly as either a bipe or mono. You can also switch the frame around for +ve or -ve offset.

BTW, just an idea, I've never tried it....

ok that sounds good, but how do i band them on???

also how about aileron control? do i need 2 servos then or can i connect the ailerons with rods and just use my current servo. i don't have an extra unless i canabilize from another plane.

one more thing, are we still talking about the wing under the fuse, or both on top?, i am thinking both on top

The frame idea was for the second wing above the first.

As for servos, that's up to you. If you have a spare servo you could use it as the wing will already be cut out for it and have the torque rods... You could then use a Y harness to connect the servos...

If you use a pushrod between the wings then You'll have to be careful when attaching the wings to the frame each time as the top wing could be out of trim. Or you could just have the ailerons on the bottom wings and just tape up the top wing....

that sounds good to me. after i teach my gF to fly, i am gonna give this a shot.

i am still confused on how the brace is held inbetween the two wings? obviously i just band down the bottom, but how do i band the frames to the bottom and top?

OK, so you've got the two frames joined together by four wood dowels (one on each corner) The dowels stick out each side, the bottom dowels are used to secure the frames to the fuse in the same way that the wings are secured. You could wrap the bands around the bottom of the fuse to make it more secure.

You then slide the bottom wing through the frame so that it rests on the fuse, connect the aileron servo and band it down in the usual way.

Just place the top wing on top of the two frames and band it down to the top two dowels....

If you make the frames correctly, It'll be secure but will pop apart in the event of a crash.... and of course will be easily removable for 'normal' flight.

now i understand. definetly gonna try this out, i will report back when i do, assuming i can still post the the forum