Hmmm, not sure that it is more work..unless you have a bunch of tools available that I don't have (wire cutter or cnc equipment) then sculpting a traditional airfoil would be more work. If you're comparing it so something like the "armin wing" this is more durable in a crash and I find it easier to build...that said I've also built my share of traditional airfoil using dollar tree foamboard and they work pretty well. This monstrosity isn't necessarily the best example for the stepped airfoil, most of my KFm airfoil wings are 48" or less and the foam is only 1/2" or less and easier to cut.
ur kf foils have the big thick bit tapering to the tips, and are about half the chord before elevons. Mine are half the chord with elevons. Are yours better?
I would not look to this design for tips :-) I was merely trying to maximize the width and scaled another design as much as I could to fit a 4x8 sheet. It did not fly great, but that was due to 2 issues. 1) needed more power, 2) needed more nose weight (CG had it tail heavy). Other changes would have been to use thinner foam, this was too thick (too much cross sectional area cutting through the air).
Can't wait to see it fly. Love wings. Made a FT Kraken flew great but got flipped by a gust when landing and crashed. What are the specs of your wing, dimensions and the motor setup?
Hi Christopher. There is a link in the description which shows the dimensions (well, most of them). The motor is mentioned in the video. It's a Turnigy 3548/4 1100KV motor. It puts out 910W. It won't be enough for 1:1 thrust/weight, but should be enough to fly
UnlimitedVertical How about the Cord width and tip lengths. I am never good at estimating the wings. I have NTM Prop Drive 42-38 750kv 785 w and a 28-36 2200 kv 696w which do you think will be better suited for the wing.
Christopher Loh The link in the description shows those dimensions, but here they are again : root chord - 30", tip chord - 20", sweep 28". Out of those motors, the 4238 would be a better choice. I would not recommend building this wing until I have had a chance to maiden mine. At this point I do not know if it is a good flyer or not.
If you build one, use 1" foam instead of 1 1/2"...this is too thick, too much drag. Also, go thinner on the elevons, that way you don't need two servos for each. Can't remember the music, either from youtube's royalty free music, or from PowerDirector's built in royalty free music.
I wanted to fly it today, but it is much too windy for a maiden. The first nice day that I have that I am not at work I will put it in the air :-) Thanks for the comment
Kim sørensen Kim, your English is much better than my Danish...I am certain of that :-) It was windy yesterday right up until about 8pm. I did go out flying, bu t left the big wing at home. Hopefully next weekend I'll get it in the air.
I'm curious these stepped airfoil seem to be more work than traditional ones why use them?
Hmmm, not sure that it is more work..unless you have a bunch of tools available that I don't have (wire cutter or cnc equipment) then sculpting a traditional airfoil would be more work. If you're comparing it so something like the "armin wing" this is more durable in a crash and I find it easier to build...that said I've also built my share of traditional airfoil using dollar tree foamboard and they work pretty well. This monstrosity isn't necessarily the best example for the stepped airfoil, most of my KFm airfoil wings are 48" or less and the foam is only 1/2" or less and easier to cut.
@@UnlimitedVertical I just use patterns and diy hot wire cutters
Excellent step by step... great angle wish I could, looking forward to view Canada Day flight.... Cheers
What type of glue are you using? Thanks
ur kf foils have the big thick bit tapering to the tips, and are about half the chord before elevons. Mine are half the chord with elevons. Are yours better?
I would not look to this design for tips :-) I was merely trying to maximize the width and scaled another design as much as I could to fit a 4x8 sheet. It did not fly great, but that was due to 2 issues. 1) needed more power, 2) needed more nose weight (CG had it tail heavy). Other changes would have been to use thinner foam, this was too thick (too much cross sectional area cutting through the air).
What size motor and battery setup are you going with?
great job mate. tempted. What's the music please?
Where did you get that tape
Also where are you in Canada (I am GTA)
How do you know the angles to cut? How do you measure the angles?
This was quite a long time ago so I don't remember (and I've long since dismantled it). I basically scaled up a smaller KFM2 design.
It's about time Canada got a B2 bomber. :-) We couldn't ask for better neighbors! Greetings from Arizona.
+Thema inproblem lol
Can't wait to see it fly. Love wings. Made a FT Kraken flew great but got flipped by a gust when landing and crashed. What are the specs of your wing, dimensions and the motor setup?
Hi Christopher. There is a link in the description which shows the dimensions (well, most of them). The motor is mentioned in the video. It's a Turnigy 3548/4 1100KV motor. It puts out 910W. It won't be enough for 1:1 thrust/weight, but should be enough to fly
UnlimitedVertical How about the Cord width and tip lengths. I am never good at estimating the wings. I have NTM Prop Drive 42-38 750kv 785 w and a 28-36 2200 kv 696w which do you think will be better suited for the wing.
Christopher Loh The link in the description shows those dimensions, but here they are again : root chord - 30", tip chord - 20", sweep 28". Out of those motors, the 4238 would be a better choice. I would not recommend building this wing until I have had a chance to maiden mine. At this point I do not know if it is a good flyer or not.
awesome plane! i might build one myself too. and great soundtrack! what are names of those songs?
If you build one, use 1" foam instead of 1 1/2"...this is too thick, too much drag. Also, go thinner on the elevons, that way you don't need two servos for each. Can't remember the music, either from youtube's royalty free music, or from PowerDirector's built in royalty free music.
can you send me the template of this flyingwing
Sorry, I don't have a template or plans. The description has a link to the flying wing calcualtor with all of the major dimensions punched in.
when will you show us how it fly ?
I wanted to fly it today, but it is much too windy for a maiden. The first nice day that I have that I am not at work I will put it in the air :-) Thanks for the comment
UnlimitedVertical i can say here in danmark lots of wind today and sorry for my english its not the best
Kim sørensen Kim, your English is much better than my Danish...I am certain of that :-) It was windy yesterday right up until about 8pm. I did go out flying, bu t left the big wing at home. Hopefully next weekend I'll get it in the air.
i have a maxi swift here its a good plane easy to fly
Awesome.... John. Go big or go home huh?
You know it!
that is the best plane you made we need to se more like that
You will need to give it a wing profile for it to fly... this wont make it.
😆 Excelente muy bien 😆👍👍👍👍👍.
OMG..........I have big sheet of that foamboard in my basement............wheels are spinning!
lol
Гантели хорошие! )
lol...they help to weigh it down :-)
я прекрасно понимаю! )) это в шутку.. Отличное видео! Спасибо!