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Posted: 8/8/2018 3:26:03 PM EDT
Just got this finished:
 Don't blame me for that first crash. The possum sourced as a pilot was drunk. Went much better after we dried him out.  36" 3D Printed Northern Pike Maiden Flight  I've posted the STL's to thingiverse for anyone that wants to print one. The files are free, but if you wanted to tip me on thingiverse, I won't say no. https://www.thingiverse.com/thing:3040294 It's a 40 hour or so print to make all the parts. Every piece will fit on a standard 200x200x180mm build area printer. About 12 dollars worth of plastic, and maybe $50 for the electronics. ETA: Better flight video:  36" Pike PETG Version Maiden 8.12.18 |
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Posted: 8/8/2018 3:32:55 PM EDT
[#1]
Holy shit, that's awesome. You're awesome. Have muh babbies.
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Posted: 8/8/2018 3:34:37 PM EDT
[#2]
Came to see a nice fish
But left satisfied  nice plane OP
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Posted: 8/8/2018 3:35:57 PM EDT
[#3]
Sweet!
A guy in our club just printed a 80" corsair. Hoping to have pics soon. |
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Posted: 8/8/2018 3:41:06 PM EDT
[#4]
Quote HistoryQuoted:
Came to see a nice fish But left satisfied nice plane OP
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Posted: 8/8/2018 3:41:23 PM EDT
[#5]
Quote HistoryQuoted:
Came to see a nice fish But left satisfied nice plane OPOr a small battery powered robot boat that trolled a preset pattern for you and brought the days catch home |
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Posted: 8/8/2018 3:50:24 PM EDT
[#6]
Quote HistoryQuoted:
Sweet! A guy in our club just printed a 80" corsair. Hoping to have pics soon. Quote HistoryQuoted:
Sweet! A guy in our club just printed a 80" corsair. Hoping to have pics soon. Quoted: Battery powered minnows that catch fish then tow them home wouldn't be too shabby Or a small battery powered robot boat that trolled a preset pattern for you and brought the days catch home |
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Posted: 8/8/2018 3:53:58 PM EDT
[#7]
Quote HistoryQuoted: Yeah, the 3D labprint corsair is pretty awesome looking. Been thinking about printing one, but it's a long print time. I have always wanted to do this. Think WA has a bunch of stupid laws in place about electronics being illegal though. 
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Posted: 8/8/2018 3:58:40 PM EDT
[#8]
That reminds me... whatever happened to the possum-piloted rocket car?
@frogwater
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Posted: 8/8/2018 3:58:43 PM EDT
[#9]
Planning any trips to Venezuela?
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Posted: 8/8/2018 4:07:36 PM EDT
[#10]
Quote HistoryQuoted:
That reminds me... whatever happened to the possum-piloted rocket car? Quote HistoryQuoted:
That reminds me... whatever happened to the possum-piloted rocket car? Quoted:
Planning any trips to Venezuela?  The weight of the bolivars needed to pay for the electricity would overload the plane.
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Posted: 8/8/2018 4:09:26 PM EDT
[#11]
I built a Toucan slope glider once. It had the same swept forward platform that thing has. Launching was tricky till I figured it out. Pinch just under the wings and a smooth push will get it moving good enough so you can pour the coals on without that nasty yaw throw you have there.
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Posted: 8/8/2018 4:11:32 PM EDT
[#12]
That's hot.
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Posted: 8/8/2018 4:13:27 PM EDT
[#13]
Have the democrats wrung their hands about ghost planes yet in the wake of the Maduro assassination attempt? I feel like I'm ahead of the curve for mentioning this.
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Posted: 8/8/2018 4:16:26 PM EDT
[#14]
Awesome
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Posted: 8/8/2018 4:21:44 PM EDT
[#15]
Dammit I am gonna start it tonight,,,,
 Very cool!
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Posted: 8/8/2018 4:23:11 PM EDT
[#16]
Why are the wing ribs in that pattern? I've seen diagonal ribs on several of the 3D-printed planes. Yours is a bit different from the others I've seen in that it looks like those ribs are following curves of some sort instead of being straight lines. Do you do a full-blown stress analysis, or is it just the default in some software that you designers use, or what?
Neat design, BTW! |
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Posted: 8/8/2018 4:29:47 PM EDT
[#17]
Very cool! I love RC planes, I haven't had one in years though.
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Posted: 8/8/2018 4:43:21 PM EDT
[#18]
Quote HistoryQuoted:
Why are the wing ribs in that pattern? I've seen diagonal ribs on several of the 3D-printed planes. Yours is a bit different from the others I've seen in that it looks like those ribs are following curves of some sort instead of being straight lines. Do you do a full-blown stress analysis, or is it just the default in some software that you designers use, or what? Neat design, BTW! There's a reason you don't see many forward swept wings in full scale aircraft. There are a ton of advantages in aerodynamics, but building it strong and light enough is stupid expensive. 
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Posted: 8/8/2018 4:48:12 PM EDT
[#19]
Quote HistoryQuoted:
I built a Toucan slope glider once. It had the same swept forward platform that thing has. Launching was tricky till I figured it out. Pinch just under the wings and a smooth push will get it moving good enough so you can pour the coals on without that nasty yaw throw you have there. |
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Posted: 8/8/2018 5:00:39 PM EDT
[#20]
Quote HistoryQuoted:
Dammit I am gonna start it tonight,,,, Very cool! |
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Posted: 8/8/2018 5:01:07 PM EDT
[#21]
That's pretty amazing.
Wave of the future...wave of the future.... |
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Posted: 8/8/2018 5:50:01 PM EDT
[#22]
Quote HistoryQuoted:
That's pretty amazing. Wave of the future...wave of the future.... |
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Posted: 8/8/2018 6:23:07 PM EDT
[#23]
Quote HistoryQuoted:
Just need a big enough printer to make myself a full scale version. :D Talked to a Boeing engineer this last weekend who mentioned they were playing with titanium 3D printer tech. Quote HistoryQuoted:
Quoted:
That's pretty amazing. Wave of the future...wave of the future.... I'm pretty sure the engine manufacturers already print some metal parts for jet engines. Things are getting interesting with computer AI design combined with additive manufacturing. |
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Posted: 8/8/2018 7:04:40 PM EDT
[#24]
Quote HistoryQuoted: Exactly my thought. Even if you only printed the ailerons and elevators, it would still be a big time saver. I'm pretty sure the engine manufacturers already print some metal parts for jet engines. Things are getting interesting with computer AI design combined with additive manufacturing. |
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Posted: 8/8/2018 7:42:57 PM EDT
[#25]
Can't quite find the Northern Pike, but I do spy an NACA ram air scoop.
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Posted: 8/8/2018 8:09:43 PM EDT
[#26]
Quote HistoryQuoted:
Can't quite find the Northern Pike, but I do spy an NACA ram air scoop. 
But yeah, got a lot of amps running through increasingly smaller electronics, so the cooling really helps. NACA duct is the most efficient way to do that as far as I know. |
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Posted: 8/8/2018 8:12:42 PM EDT
[#27]
Quote HistoryQuoted:
That reminds me... whatever happened to the possum-piloted rocket car?
@frogwater |
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Posted: 8/8/2018 9:07:22 PM EDT
[#28]
Quote HistoryQuoted:
Same story, maybe same possum, opie was kicking the tires prior to lighting the fires and Miami JBT saw him fall over. Opie was trashed... ended up hauled away to the hoosegow never to be seen again. There have been some sporadic reports of prison possum rape, but I dont believe it.... |
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Posted: 8/8/2018 10:11:15 PM EDT
[#29]
What sized cam is the nose cut out for? Would be fun to FPV it..
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Posted: 8/8/2018 10:14:49 PM EDT
[#30]
Nice lure OP
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Posted: 8/8/2018 10:14:54 PM EDT
[#31]
What is the weight and wingloading like?
I hate my 3d printer, waiting for a damn part to print is worse that Christmas morning.
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Posted: 8/8/2018 10:21:52 PM EDT
[#32]
Quote HistoryQuoted:
What sized cam is the nose cut out for? Would be fun to FPV it.. |
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Posted: 8/8/2018 10:28:15 PM EDT
[#33]
Quote HistoryQuoted:
I built a Toucan slope glider once. It had the same swept forward platform that thing has. Launching was tricky till I figured it out. Pinch just under the wings and a smooth push will get it moving good enough so you can pour the coals on without that nasty yaw throw you have there.
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Posted: 8/8/2018 10:30:24 PM EDT
[#34]
Quote HistoryQuoted:
What is the weight and wingloading like? I hate my 3d printer, waiting for a damn part to print is worse that Christmas morning.  Attached File Attached FileIn the flight video posted, I drained less than half of my battery power (only 1135mah out of 2650) and flew for about 6 minutes. Not bad at all. The airframe is so slippery and drag free that it doesn't take much power to cruise at all. At least this thing doesn't have a super long print time compared to most 3D printed planes. It's only around 40 hours for all the parts. I like to start a set of parts when I get home from work, then another the following morning before I leave. |
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Posted: 8/8/2018 10:33:34 PM EDT
[#35]
Quote HistoryQuoted: Wing loading really isn't bad for a fast FPV ship. WCL is a 9.7. Estimated top speed in level flight with this power setup is 97 mph. The good news is calculated stall speed is only 20MPH, and this thing just drops in a stall, no bad behavior, it just sinks. https://www.AR15.Com/media/mediaFiles/102216/Wing_Loading-634654.JPG https://www.AR15.Com/media/mediaFiles/102216/Motor_Calcs-634650.JPG In the flight video posted, I drained less than half of my battery power (only 1135mah out of 2650) and flew for about 6 minutes. Not bad at all. The airframe is so slippery and drag free that it doesn't take much power to cruise at all. At least this thing doesn't have a super long print time compared to most 3D printed planes. It's only around 40 hours for all the parts. I like to start a set of parts when I get home from work, then another the following morning before I leave. 
Might have to print one this weekend. |
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Posted: 8/8/2018 10:36:04 PM EDT
[#36]
I can't imagine building that in balsa, but curious which would be lighter?
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Posted: 8/8/2018 10:39:27 PM EDT
[#37]
Quote HistoryQuoted: I can neither confirm nor deny reports of the provenance of our acquired possum pilot. However I can reveal that he was caught wearing a tiny (and filthy) orange jumpsuit and spouting racial slurs about penguins. 
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Posted: 8/8/2018 10:50:22 PM EDT
[#38]
Quote HistoryQuoted:
I can't imagine building that in balsa, but curious which would be lighter? Too many curves, it would take a lot longer to build. Actual assembly time for this plane (after all the parts come off the printer) is only a couple hours. You slot it all together, gluing as you go, and plunk in electronics. Only part that might sorta be annoying is routing the motor wires through the spar holes before you seal up the center section, and that's really not a big deal either.
If I crash, I prefer to laugh, then quickly build another rather than cry my eyes out. Especially on something that approaches 100mph that I'm tempted to pull stupid stunts with.
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Posted: 8/8/2018 11:00:32 PM EDT
[#39]
Quote HistoryQuoted: I'm not a balsa builder, but I think a good builder would have the edge in wingloading, especially if they made use of modern materials like carbon fiber and lightweight covering film. But you aint gonna catch me doing that. Too many curves, it would take a lot longer to build. Actual assembly time for this plane (after all the parts come off the printer) is only a couple hours. You slot it all together, gluing as you go, and plunk in electronics. Only part that might sorta be annoying is routing the motor wires through the spar holes before you seal up the center section, and that's really not a big deal either.
If I crash, I prefer to laugh, then quickly build another rather than cry my eyes out. Especially on something that approaches 100mph that I'm tempted to pull stupid stunts with.Probably take an hour to make a set of templates to cut the wings, another hour to cut a set of cores. Fiberglass fuses are WAY less work. 1/2 an hour prep time for the mold, 1/2 an hour to lay it up, 1/2 an hour to join it. Wait 12 hours and boom, completed fuse. |
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Posted: 8/8/2018 11:02:18 PM EDT
[#40]
scale it up and shove a GAU-8 in there!
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Posted: 8/8/2018 11:06:10 PM EDT
[#41]
No fish.....not even a delicious bass.
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Posted: 8/8/2018 11:06:21 PM EDT
[#42]
Quote HistoryQuoted: I'm not a balsa builder, but I think a good builder would have the edge in wingloading, especially if they made use of modern materials like carbon fiber and lightweight covering film. But you aint gonna catch me doing that. Too many curves, it would take a lot longer to build. Actual assembly time for this plane (after all the parts come off the printer) is only a couple hours. You slot it all together, gluing as you go, and plunk in electronics. Only part that might sorta be annoying is routing the motor wires through the spar holes before you seal up the center section, and that's really not a big deal either.
If I crash, I prefer to laugh, then quickly build another rather than cry my eyes out. Especially on something that approaches 100mph that I'm tempted to pull stupid stunts with. |
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Posted: 8/8/2018 11:06:34 PM EDT
[#43]
Quote HistoryQuoted:
Depends how you look at it, I could cut a set of foam wings and a balsa or foam fuse in WAY less than 40 hours. Guess it depends how you count your time watching the printer. Probably take an hour to make a set of templates to cut the wings, another hour to cut a set of cores. Fiberglass fuses are WAY less work. 1/2 an hour prep time for the mold, 1/2 an hour to lay it up, 1/2 an hour to join it. Wait 12 hours and boom, completed fuse. Fortunately, I don't count printer time, as I don't watch them anymore. Just set and forget. Starting a print only takes a couple minutes, so there's very little time spend on that end of things. Most of the print time is me sleeping, or being at work. |
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Posted: 8/8/2018 11:08:41 PM EDT
[#44]
Quote HistoryQuoted: redo it for dual head printer.. CF on the inside and regular PLA outside.. |
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Posted: 8/8/2018 11:08:53 PM EDT
[#45]
Hey local any issue with slicing it with slicer? Or do I have to buy the slicer program you used?
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Posted: 8/8/2018 11:09:59 PM EDT
[#46]
Quote HistoryQuoted: I have a printer that will handle up to 4 different materials. I've considered trying the carbon fiber infused filaments, but they are quite expensive and often brittle. Might still work out, but total print would go way way up. |
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Posted: 8/8/2018 11:11:37 PM EDT
[#47]
Slic3r as far as I'm aware will not work. Simplify3D is what I reccomend. It's really an awesome and powerful piece of software, but If you don't want to pay for it, Cura is a free option. I don't have a set of profiles figured out for Cura, but you can google for 3dlabprint settings for Cura.
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Posted: 8/8/2018 11:12:28 PM EDT
[#48]
Thats awesome.
I just spent 1.5 hours getting mine down from 50ft in a tree.
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Posted: 8/8/2018 11:14:35 PM EDT
[#49]
Quote HistoryQuoted: get the colorfab CF20 its the shit! and prints well. Been using it for Micro Quad frames. |
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Posted: 8/8/2018 11:15:19 PM EDT
[#50]
is the skin printed too, or laminated over a printed endoskeleton?
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