Depron Extra 300

by CountBassy | December 14, 2017 | (0) Posted in Projects

This is an Extra 300 I designed to be made with 6mm depron, as I still have a couple sheets left, even though RCFoam has been running out of depron for quite a while. Dollar Tree foam board is all the rage these days, and this could easily be modified to be built with DTFB instead. I designed it mainly because of the lack of scale-looking 3D plane designs. As such, the main design point of this plane was to have a scale-ish looking body, and flight probably slightly suffers because of this. I designed this plane using Adobe Illustrator and Blender. The plane features a KF-4 airfoil for ease of building and good flight performance, and the wingspan is 900mm.

Warning: This is an ADVANCED plane. It is VERY DIFFICULT to fly. If you try to fly this with the wrong electronics setup and/or a beginner to low intermediate skillset, you are going to crash. This plane likes speed and is very touchy. It is for 3D flying with normal control deflection, or very fast pattern flying with very low rates. It doesn't have a huge amount of lift, and it loves to do tricks, but it also loves to stall. The upside is that it could do anything I threw at it, inverted, rolls, hovers, flat spins, snap rolls, etc. It will tip stall, though, and landing is tricky as it likes to fall out of the sky at slow speeds. It is recommended to fly this with a C-Pack setup (480 size motor, 900-1200kv, 1047 prop). An underpowered setup will be quite the headache for this plane, so if anything, go for more power.

All caveats aside, this is a really fun plane to fly, and not a difficult build. I designed everything to slot together and score/fold, so the build is pretty easy if you do everything in the right order. The recommended build order is firewall, wing, fuselage sides, fuselage bottom, tail, fuselage top, turtledeck, and then canopy to finish it off. The canopy serves as a hatch for your receiver/esc/servos, and then another hatch should be made in the bottom front of the fuselage for the battery to get the plane to balance correctly. You can get the plans here:

Full Size (40"x26"): http://www.mediafire.com/file/1vyohrf1vdg1z4f/Extra300PDFPlans.pdf

Tiled Sheet 1: http://www.mediafire.com/file/n68en6d57q1az09/Extra300TiledSheet1.pdf

Tiled Sheet 2: http://www.mediafire.com/file/t3fulw6203xe74b/Extra300TiledSheet2.pdf

If you'd like to show your thanks with a donation, you can do so here: https://twitch.streamlabs.com/thecountbassy#/

I hope you enjoy this plane! I like how it turned out, and while there are definitely a ton of changes I'd make for the next version, including scaling the whole plane up and increasing the length of the fuselage, it looks very cool and is very maneuverable. I hope you enjoy the design! Let me know what you think of it, or if you have any questions. Thanks for checking it out! Happy flying!

CountBassy

COMMENTS

jtude1313 on December 14, 2017
The wings look disproportionately small.
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Dingo94 on December 24, 2017
Currently building this, are there instructions
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Jpot1 on December 14, 2017
Really like the looks of this. Anyway you can include some extra pics? In looking at the plans I’m not sure how several of the pieces go together.
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A4Skyhawk on February 11, 2021

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Depron Extra 300