Ft viggen group build!
- Thread starter The Hangar
- Start date
That looks great! Is it bigger than you were expecting? It was for me!
So the backyard test was a medium success. I didn't change the thrust angle to see what it would be like and it was an issue that needs fixing but other than that everything else was perfect. And pretty soon (next week or 2) I'm going to fly this fpv!! I've never flown fpv before so this will be my first time and I'm super excited!
Zetoyoc
Elite member
i must be getting tired. until i zoomed in on your photo i thought it was some sort of coffee maker.
Lol
I can see that though...
BATTLEAXE
Legendary member
I know nothing about EDF's so far but is the thrust tube tampered towards the back?
Matthew Sanders
Elite member
It should be. The only experience I have is from build videos, but yes it should be tapered. I tested my EDF last night, and I was SO surprised how much it sounds like an actual JET! It's amazing.
BATTLEAXE
Legendary member
I gotta do the EDF thing sometime. I did some research and yeah the exhaust tube should be somewhere around 85-90% of the airflow diameter so the taper makes sense. A buddy who isn't in the aircraft hobby has a 69mm 5 blade 3700Kv EDF and a 60amp ESC. I should see if he wants to donate it into a Viggen
Matthew Sanders
Elite member
I like the word "donate"!
Yeah man, get into the edf thing before I do! Didn’t @Headbang cut a viggen out for you? Every time I see my viggen, it screams “EDF” at me, and I always think I should do a twin 64mm in a slightly enlarged viggen and that would make for some insane aerobatics coupled with thrust vectoring!
Awesome - I’m jealous 😉
BATTLEAXE
Legendary member
He did say he did but we haven't discussed it since. I kinda let it ride just because I don't have an EDF to use in it, and I wasn't keen on doing another pusher, just figured if I was going to do it I wanted to do it right and use an EDF. I might see if I can lock down the EDF option first and then talk to Headbang about it, he may have even used it already if he did cut one out. He did offer but I am not really the kind of guy to ask for charity, but if it's offered... that's a different story.
Matthew Sanders
Elite member
TWIN? Dude, all this talk about 70mm fans and 6 cells. I could barely hold on to my single 64 at FULL throttle on 3S! Also, isnt the real life Viggen a single engine?
Matthew Sanders
Elite member
@ The Hangar, how do you put the sub tag (where you say "I love everything flite test") on this forum?
buzzbomb
I know nothing!
At the top of the page click on your name. On the right in the drop down click on "signature." If you're going to tag a user, the "@" has to be attached to the user name without a space. @Matthew Sanders. Hope this helps!
There you have it!At the top of the page click on your name. On the right in the drop down click on "signature." If you're going to tag a user, the "@" has to be attached to the user name without a space. @Matthew Sanders. Hope this helps!
Lol - only reason I said twin 64 mm instead of twin 70 mm is cause I can’t buy some 4 or 6s 5000 mah pack. I have 4 5000 mah 3s packs which seem like they’d do a good job🤣 Have you started building the viggen yet?
Matthew Sanders
Elite member
Thanks @buzzbombAt the top of the page click on your name. On the right in the drop down click on "signature." If you're going to tag a user, the "@" has to be attached to the user name without a space. @Matthew Sanders. Hope this helps!
Matthew Sanders
Elite member
I think you know what im doing this weekend... 😃
Matagami Designs
Master member
Definitely bigger then what I was expecting and it was a whole.differnt build process than what I'm used to doing an edf. The actual EDF itself was a bit hard to instal since it was closer to 74mm it didn't fit into the stock formers. Plus I made the mistake of gluing the length of the fuse when I folded it up so the formers weren't quite flush when i went to install them.
It is tapered but I'm not sure what the reasoning is behind that. You should get that EDF and join in on the fun.
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