Speedy Red Midi Wing by wersy

Last crawled date: 3 years, 1 month ago

For all friends of flying planks I designed a special version sized between the
Speedy Red Mini Wing https://www.thingiverse.com/thing:1117576 and the
Red Duck https://www.thingiverse.com/thing:407766
Moreover I used a different airfoil. It now comes with a wingspan of 1000 mm and the total weight is 870 grams.
Like in the “Mini Wing”, carbon rods (8mm now) pass all the way through, providing extraordinary
stability. These rods are so stiff and fit in so tightly, you don’t need to glue anything.
This makes changing a part very easy, in case it is broken or you want it in another color.
I havn’t had a chance myself to maiden it yet. But Dave already got it airborne. Watch
his success here:https://www.youtube.com/watch?v=y8ECqxQFIFE

Now I maiden it as well:https://youtu.be/b07vxzm0pUk

Recommended Print Settings
Attention
The wings are designed to print using 0.5 mm width, 0.3 mm height, 3 bottom and 3 top
layers, but one perimeter only.
Should you print thinner walls, the perimeter of the upper side will not stick well enough
to the perimeter of the inner stiffening construction.
If you apply thicker walls, the perimeters will not come out continuously in one
uninterrupted turn.
The layers must build up as if you were printing in spiral vase mode. Only then you get a
smooth surface on the upper side.
If unsatisfied with the results, try out 0.49 or 0.48 width in your slices settings. It
depends whether you use Cura, Slic3r, S3D or what yo have. I suggest you experiment with
some tests before printing the whole thing.
The second point is: Should you print lesser layer heights, the inner stiffening
construction will not connect well to the top and bottom layers. You will suffer a gap in
between.
All wing parts: layer height =0,3mm, width =0.5 mm
wing: 1 perimeter, 3 bottom layers, 3 top layers, hollow
wing servo: 3 bottom layers, 3 top layers, hollow
elevon 170: 7 (!) bottom layers, spiral vase mode
elevon 167: 3 bottom layers, spiral vase mode
elevon joint: no bottom layer, spiral vase mode
fuselage parts: layer height =0,2mm, width =0.52 mm
fuselage front: 3 perimeters, 7 bottom layers, 3 top layers, 80% infill
fuselage middle: 2 perimeters, 1 bottom layer, 1 top layer, hollow
fuselage back: 2 perimeters, 3 bottom layers, 3 top layers, 40% infill
fuselage interface: 2 perimeters, width =0.4mm, no bottom/top layer, hollow
fin: 5 bottom layers, layer height =0,3mm, width =0.5mm, spiral vase mode
fin cap: 2 perimeters, 3 bottom layers, 3 top layers, layer height =0.2mm, width =0.4mm,
30% infill
Specifications
airfoil: AR2610-S80
wing span: 1000 mm
wing chord: 200 mm
CoG: 35 mm from leading edge (12% safety)
overall weight: 816 g
wing weight complet: 460 g
fuselage weight complet 356 g
fin weight 12 g
wing area: 20.0 dm²
wing loading: 41 g/dm²
longitudinal stability (Thies) STFs:
motor: Propdrive 28-36 1000KV
static thrust: 950 g (3S Lipo)
battery: Turnigy 1200 mAh 3S 40~50C Lipo
motor camber: tilted -4 degrees
side pull: none
propeller: Aeronaut CAM Aeronaut Carbon Classic 10 x 6"
Update 3.3.2021
"Fersy" added a cable channel for the servo cable in the wing part "wing_center_screwing_version_73".https://www.thingiverse.com/thing:4782253
Thank you Fersy, this is a very good idea.
Update 22.06.2020
"spacerunner59" asked me for a version to be able to screw on the wing instead of fixing it with rubber bands.
Thank you Thomas for the useful suggestion!
As a solution there are now fuselage parts with holes to screw on. Furthermore the fuselage parts can be put into each other, so that the connecting parts are no longer needed.
The middle wing section consists of 3 parts.
The part in the middle has a wall thickness of 0.8 mm.
Print Settings
perimeter_extrusion_width = 0.4
layer_height = 0.2
perimeters = 1
bottom_solid_layers = 3
top_solid_layers = 3
fill angle = 0° (right angled to the part otherwise the solid top layer around the opening will fall down)
The two parts on the side are 73 mm wide each and are printed in the same way as the other wing parts.
Update 7.6.2020
Uploaded fuselage front 188
This part has already a socket joint so you don't need the interface part for glueing.
Update 5.5.2020
I have uploaded bushing_for_M3.stl.
This is a simple solid cylinder.
Depending on the inner diameter of your pipes you might have to scale it in the slicer.
The cylinder must be printed hollow, with only 2 or 3 perimeters.
Then you have to re-cut the bushing with a tap.