Synergy Box Wing

[FoamyDM]

So, the building went well. Next stop servo and motor install.

 

[Merv]

Looking good!

 

[jpot1]

So, the building went well. Next stop servo and motor install.

Nice clean build!

 

[FoamyDM]

If I get a chance I will work up your plane on 22x34" printables... so anyone (I) can print, stick and cut. (my method) your design is very crisp and simple, I like.

 

[FoamyDM]

I was thinking that this plane is going to require a control rod bending guide. Especially if you use landscaping wire like me. Also locations for the zip-tie guide.
Something like a line like this:

 

[FoamyDM]

here are some servo details from my build.

on reflection, I need take more pictures as I build.

 

[CMS_1961]

Nice job so far!!

 

[FoamyDM]

Other servo is in, glued, and the wires set. I built a motor mount so thrust would be through the CM, near the base of hatch near the inner verticals meet the step. I found the best way to adjust the flap neutral point is to shift the zip tie.
Now its time to put a prop and fly it.

 

[AkimboGlueGuns]

Looks like a nice little build, but I'm a bit worried about your fuselage shape. The massive downward sloping plane will act like a downwards deflected canard and may make your flight characteristics rather unpredictable in some attitudes. If you find that this is that case a simple fix could be to add a taper up form the bottom (like the FT Long EZ) and the shape would be more aerodynamically stable. That should also increase the efficiency and and make the pitch control more effective.

 

[jpot1]

@AkimboGlueGuns - surprisingly this flys very stable. It did need 3-4 mm of reflex but otherwise very easy. Check out the video in the first post.

Currently working on v2. Redesigned rear wing making the elevons larger. Foldover FT style wing. Also my first attempt at sketchup going with a rounded canopy. Will post progress this weekend.

 

[jpot1]

Next version taking shape. Definitely need some tweaks but liking the fold over wings and curved fuse.

 

[Grifflyer]

That looks AWESOME!!

 

[jpot1]

2 hours of inspired building this morning. Lots of tweaks to the plans but was able to get the servo embedded in the inner rear vertical! Motor mounted and hatch cut. Will tweak plans and then do the other rear wing.

 

[jpot1]

...and done. Blue tape has a hot glue blob where I think the CG is. Will adjust after maiden.
Specs in post 1 updated.

 

[FoamyDM]

looking great.

I took the simple version out for a spin....

It was not a success. I launched it, which didn't go up, but down. did you discus throw? When it hit the ground 3 glue joints popped. one was the wing base. so I had to take a moment to re glue. My weather has been rainy, then freezing, and gusty... maybe no the best choice for a maiden.

 

[jpot1]

looking great.

I took the simple version out for a spin....

It was not a success. I launched it, which didn't go up, but down. did you discus throw? When it hit the ground 3 glue joints popped. one was the wing base. so I had to take a moment to re glue. My weather has been rainy, then freezing, and gusty... maybe no the best choice for a maiden.

Oh no. Yes just a side arm discuss throw at about half throttle. Did you have 4-5mm of reflex?

 

[FoamyDM]

None... I thought about it, but as I was putting in reflex, I noticed the left boom released. so stink . (4-5mm reflex) got, it, and it makes sense. (I was really hoping for success this weekend.)
but freezing temps and 12mph gusty winds make for difficult testing (Here it is... perfect for testing and I'm working away until dark....)

This plane will have it's day.

 

[jpot1]

I hear u. We didn’t get snow but it’s been freezing. High didn’t make it to 20 yesterday. Want to get out this weekend to maiden v2.

 

[DamoRC]

...and done. Blue tape has a hot glue blob where I think the CG is. Will adjust after maiden.
Specs in post 1 updated.

View attachment 122430

View attachment 122431

Love the fuse - that's a lot of score cutting!

 

[jpot1]

Yep and gorilla glue!