Looking for Ideas for 3D Printed Jets

telnar1236

Elite member
I'm looking for ideas for 3D printed jets that people might be interested in building - I have way too many power systems and rolls of filament sitting around, so I need to do something with them, or get rid of them.

I think I'm going to make it my goal this winter to try and get as many of the power systems I have as possible into flyable airframes. As one of the few people who designs and builds his own planes at my local rc club, people tend to give me old power systems they no longer want, so I have quite the collection of outdated (and a couple modern) EDFs and even a couple motor/prop combinations. I also have too many rolls of filament from different projects where I bought the roll and then didn't use the whole thing and I need to get rid of them. It's also looking like I'll be able to design parts for the F-100 look-alike (thinking about calling it the Super Duper Sabre) faster than I'll be able to test them between TFRs and the weather, so while the experimental jet will remain my main project, I'll be able to work on some simpler designs in between.

A couple of ideas I'm thinking of are a 64mm 4s sport jet, a twin 50mm 4s blown wing design for bush flying (because I like making EDFs do dumb stuff), and some version of the boundary layer ingesting flying wing concept (the laminar flow wing and improved streamlining of the more conventional designs I'm working on combined with the inability to use flaps on a flying wing mean it isn't really a good fit for my experimental high performance EDF project anymore). However, none of these is set in stone.
1761523527525.png


1761523572967.png

1761523763960.png

But I also have a significant number more EDFs than this and a few prop systems as well, so I still need ideas. The goal will be to give any planes that fly well enough to be fairly manageable to younger/newer flyers at my club and to put anything that is more difficult to fly up for grabs for anyone at the club, since I really don't need more planes either - though I suspect I might keep a couple for myself if I like them enough. And then of course to post the STLs for any designs on here as resources if they fly well enough.

So please, give me ideas, preferably geared more towards the intermediate side than the very advanced in terms of flight characteristics. Also, I'm not going to be trying to make anything mechanically complicated or all that fast. These will all be fixed gear designs using plastic gear servos, since I don't have a ton of metal gear servos and don't want to need to buy new parts for any of these.
 

telnar1236

Elite member
Also, I'm curious, how important are instructions for 3D printed planes, and how much can be figured out just by the names of the parts and an assembly STL? One of the big reasons I haven't released more of my designs is that the instructions are painful to write and take as long to do as designing the whole plane. For example, my Saab 105, I've been done with for quite a while, but I haven't felt like writing the manual for it and so haven't taken the time
 

Houndpup Rc

Legendary member
Also, I'm curious, how important are instructions for 3D printed planes, and how much can be figured out just by the names of the parts and an assembly STL? One of the big reasons I haven't released more of my designs is that the instructions are painful to write and take as long to do as designing the whole plane. For example, my Saab 105, I've been done with for quite a while, but I haven't felt like writing the manual for it and so haven't taken the time
If I build a model, I can do a build video (y)
 

L Edge

Legendary member
@telnar1236:

What are the dimensions of your 3d printer (length and width) that you can fabricate and how high can you go at one time for a part?
Like you goal to give back to other club members. Did the same in my club, prioritized the young ones first and then any others.
 
Last edited:

telnar1236

Elite member
Something simple and small like the bottom one above for FPV would be cool. Maybe in a 50mm size.
That's a good idea - I'm thinking maybe 3s 50mm since I've got one of those and keep meaning to and then not using due to the limited power. I think that will be the first of these quick designs because of how simple it will be, both in terms of CAD and assembly with only elevons. I doubt I'll fit it with an FPV camera since I would need to buy one and the goal is to not add to my collection of parts, but designing an alternative nose is pretty simple.
1761617282968.png
 

telnar1236

Elite member
Horton HO 229
Might be a bit too complex for this set of projects - knowing myself I'd want to make it truly tailless instead of using a transparent vertical stabilizer and get way too sucked into the aerodynamics and spend as much time on that design as I expect to on the super duper sabre design. I do want to build something tailless sometime down the road though, so I'll never say never
 

telnar1236

Elite member
Those are some wild designs - the OA7 and Fan Jet look like they'd probably translate very well into RC and be stable and nice flying for EDFs, but the Caproni just looks unstable and difficult to fly. I think the fan jet and OA7 might be good homes for two of my lower power 64mm EDFs
 

telnar1236

Elite member
Or a 64mm Viper....
I definitely want to do a 64mm sport jet - none of my current planes are particularly good at sport jet type aerobatics so I've been meaning to build one for myself. I'm not sure if I want to do a viper since I've heard the stall can be pretty sudden (I've never actually flow one myself), but my current sport jet design is pretty ugly so I think there's a pretty high probability I'll end up with a viper or something similar
 

telnar1236

Elite member
@telnar1236:

What are the dimensions of your 3d printer (length and width) that you can fabricate and how high can you go at one time for a part?
Like you goal to give back to other club members. Did the same in my club, prioritized the young ones first and then any others.
I have a 300x300x350 printer and a 220x220x220 printer - pretty much everything I design with the intention of releasing is designed to fit on a 220^3 print bed since that seems to be a standard size
 

telnar1236

Elite member
So this is what I have so far. I'm beginning to realize just how many planes I would need to build to clear out my set of EDFs, so I'm going to scale my goal back to just my 3s and 4s EDFs since those are what most people have batteries for and the planes will be smaller and therefore easier for me to build.
1761618589302.png

So I still need to come up with 2 50mm EDF designs and a 70mm EDF design
 

Mr Man

Mr SPEED!
Might be a bit too complex for this set of projects - knowing myself I'd want to make it truly tailless instead of using a transparent vertical stabilizer and get way too sucked into the aerodynamics and spend as much time on that design as I expect to on the super duper sabre design. I do want to build something tailless sometime down the road though, so I'll never say never
I want to make a 229 out of foam someday…
 

Houndpup Rc

Legendary member
I definitely want to do a 64mm sport jet - none of my current planes are particularly good at sport jet type aerobatics so I've been meaning to build one for myself. I'm not sure if I want to do a viper since I've heard the stall can be pretty sudden (I've never actually flow one myself), but my current sport jet design is pretty ugly so I think there's a pretty high probability I'll end up with a viper or something similar
😁👍