Ok, this is my new favorite thread. A foamboard Blackbird, AND personal stories of dads who were trained by Yeager and people who met him?!? I’ve got my eye on you. 😜
For the prop situation, please feel free to scale the duct to fit 2” props, as they’re far more available. I went with 1.9” because they were on sale (major discount), but in hindsight I probably should’ve gone with 2”. 😆
If you aren’t comfortable tweaking the duct, I’ll see what I can do about uploading one that works with 2” props this week. 😉
Keep up the great work, this is awesome!! I’m so proud that my crazy BUFF project prompted you to try one of your own! Can’t wait to see it fly!
~ Ben
Maybe mechanics like this would work? Simple, single servo in the fuse operates both. Would need thick wire like the large landing gear wire.
Should even be able to offset throw by the angle of the wire by going off parallel like in my crude drawing.
Would require something stronger then foam in the pylon to keep that C bend wire in place where it all pivots though.
View attachment 118914
+1I had initially dismissed this option because I had convinced myself it would ruin the look of the plane.
6?... I see elevons, rudder, throttle, gear.A bonus to this setup is that it would allow the plane to stay on a 6 channel receiver.
+1
?... I see elevons, rudder, throttle, gear.
Are you thinking differential thrust?
Maybe we should either all get together and work this out or have a "contest"...
It might be REALLY awesome to see a flight of blackbirds at FF 2019!!
see elevons, rudder, throttle, gear.
Are you thinking differential thrust?
+1
6?... I see elevons, rudder, throttle, gear.
Are you thinking differential thrust?
Maybe we should either all get together and work this out or have a "contest"...
It might be REALLY awesome to see a flight of blackbirds at FF 2019!!
Yeah, I’ll break out the laptop this week and make a 2” version, maintaining the same mount holes.
Awesome! Thanks for that.Now sized to work with 2" props, and maintains the same motor mount holes.
UPDATED! I just uploaded an update to the 3D printed EDF duct: https://forum.flitetest.com/index.php?resources/3d-printed-edf-duct-1106-gremlin-motor.46/
Now sized to work with 2" props, and maintains the same motor mount holes.
This is awesome! I'm bummed I just discovered it now...
Have you considered just doing twin pushrods for the rudders? A single servo in the fuselage with two thin pushrods guided by zip ties, one to each rudder? It'd be simple and lightweight. It would be asymmetrical, one pushrod would go to the outside of one rudder while the other would go to the inside of the other.
I wonder if a screw was too long and shorted the coil in the motor.... (I "have a friend" who might have ruined a motor or two by doing that...)the motor it was connected too has melted some so it no longer spins.
This is great. I'm going to get some of these printed off so I can use them in the Version 2.
I had thought of something similar to this, but think it may ruin the look of the plane. I will probably try it at some point.
I had the plane all together and ready to do a test flight this past weekend, however I ran into a problem. When I plugged the battery in to test the electronics (I had done everything independently with a servo tester prior to this) one of the ESC's cough fire, and the motor it was connected too has melted some so it no longer spins.
View attachment 119349
View attachment 119350
When connecting the 2 ESC's to the receiver I made sure to pull one of the red wires to not have doubled up BEC's. I'm not sure what happened, but I have ordered another Motor and ESC. Hopefully they come soon and I can get Version 2 built and test flown in the next 2-3 weeks.
I wonder if a screw was too long and shorted the coil in the motor.... (I "have a friend" who might have ruined a motor or two by doing that...)![]()