XF VIPER - Foamboard F-16 EDF
- Thread starter Mid7night
- Start date
speedy7385
Active member
speedy7385
Active member
Ben Harber, thanks for sharing a great plan!
chris398mx
Master member
What did you use for the BDF design?
speedy7385
Active member
Oh, it's your design stl file. And thanks for sharing. I had another BDF that I put in a plan from IC aeronatic's F-35 and that flew great.
speedy7385
Active member
Did you ever try your BDF in the FT Viggen?
That's awesome!! FYI: You might get more power by adding some aux-inlets ("cheater holes")towards the back, right in front of the BDF. When John Overstreet started testing my BDF, he had similar struggles and benefited from aux-inlets.
speedy7385
Active member
Thanks for the info, definitely will try that out.
chris398mx
Master member
NO, that is what I was going to try it in next. Glad it worked well in the last plane you tried it in.
jpot1
Elite member
@Mid7night - I downloaded v8 plans and was comparing some parts to your build video back on this thread. It appears the intake former has either changed or I think some lines were not connected correctly in the new PDFs. I had built this previously so I had the older version plans shown on top and the new on the bottom. I'm thinking the top is still correct???
Thanks again for all your great work!
Thanks again for all your great work!
The bottom one is the correct latest piece. When you form the lower intake piece, you fold the sides around to form the mouth, instead of bringing them 'down' onto the Intake Support piece, you slide them into that slot. The nice thing about the new version is that you can do each side individually easier.
The main reason for the change is to provide more support for the battery-surface above.
Hope that makes sense!
speedy7385
Active member
The intake is not big enough for the BDF, restricted thrust output. Thanks for Ben Harber's input. Added all those vent opennings, gained extra 300g of thrust. Now auw at 1080g, thrust about 1000g. With 6s - 2x 3s li-ion in series. Added ailerons also.
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That looks great!!
jpot1
Elite member
I’m late to the party but finally built this full size. Bigger than I realized. Kudos @Mid7night, such a well thought out design. Everything went together really well!
Edgar88130
New member
I'm new to this and my first time. How do you make the diagram bigger? Each piece to actual size. I want to print them on my printer but I don't know how to make them bigger and to the right size
nevenelestate
No Agenda FPV
I worked on F-16's in the USAF from 2002-2007, so they have a special place in my heart, and this project has been on my radar for years. Finally decided I'm going to build one! I don't want to go buy a 70mm EDF though so I am designing a BDF style duct to use. I have already made BDF style duct/mounts for my FTA-10 and it flew well, currently having FC issues but that's another thread, so this is not my first time with this style of motor setup.
I am planning to try using an 1806 2400kv motor with a trimmed down 3" prop. I haven't gotten it all sorted out just yet to test the thrust, but hoping that I can get it to work with a 4S battery setup.
Here's my first printed prototype, I've expanded the inner wall gap by the motor for more cooling and added a few other holes under the motor to get more cooling. Once I get this "perfected" I'll share the STLs on thingiverse and on here.
I am planning to try using an 1806 2400kv motor with a trimmed down 3" prop. I haven't gotten it all sorted out just yet to test the thrust, but hoping that I can get it to work with a 4S battery setup.
Here's my first printed prototype, I've expanded the inner wall gap by the motor for more cooling and added a few other holes under the motor to get more cooling. Once I get this "perfected" I'll share the STLs on thingiverse and on here.
Matthew Sanders
Elite member
Looks great! Can’t wait to see you fly it! I know its a little early to be asking, but do you have a paint scheme for yours in mind?
Matthew Sanders
Elite member
I crashed my Viper into a tree! At least I had onboard video. Mine is actually flying on a 64mm EDF. 2200 4s gives me 3 minutes, no more. It nails the tree at Time Stamp 4:20
