RC India

RC Models => Electric Planes => Topic started by: Nakul Ambilkar on September 04, 2017, 10:45:50 AM



Title: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 04, 2017, 10:45:50 AM
Hello folks,

Came across this build on rcgroups, this guy has built 70 / 90 & 120 mm edf mirage 2000 very successfully and its the most scale mirage build i have seen yet. Also has flight videos. But whats important is this new technique i learnt of bending foam with heat.

Rcgroups thread 1: 70mm edf
https://www.rcgroups.com/forums/showthread.php?1187662-Mirage-2000

Attached some photos. The plans are in the threads, I used the 64-70mm plan and enlarged by 10% to have slightly more wingspan for better flying at the cost of slight weight ofc. AUW is about 700 grams painted with all electronics, 70mm 12 blade FMS Edf, 80A Esc and 2 metal gear servos + 1 nylon gear servo for Rudder. No landing gears. Flying weight is about 970g.
I had fun building this Mirage and absolutely love the scale looks. Whats more surprising was the maiden flight, balanced right on the cg and needed 0 trim, Flies like a dream. Can fly really slow and also crazy speed at full throttle, although my aim wasn't to build a fast jet (i have lots of other fast jets) I wanted this one to fly slow and to be able to do more scale sport flying. Best part is the edf unit puts out near 1500g of thrust (rough test on weighing scale)  and it hand launches my near 1kg model no problem :D  I Dont even have to go full throttle on the launch.

How to bend Depron / Biofoam:
https://www.youtube.com/watch?v=LueDsv60SS8

Maiden flight:
https://www.youtube.com/watch?v=IAGjOrM30nw&t=26s

Slow & low passes  (Windy day)
https://www.youtube.com/watch?v=ZL_JGBb5Z_o

Re maiden post paint
https://www.youtube.com/watch?v=mtk3DD1W2Ms&t=3s

Attaching some more build photos in below replies.

Cheers & happy flying!
Nakul :)


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 04, 2017, 10:54:37 AM
(https://uploads.tapatalk-cdn.com/20170904/760a1543db4a2fbe0d2b93e35599de0a.jpg)(https://uploads.tapatalk-cdn.com/20170904/32c165684591d843ea99a55187f15be2.jpg)(https://uploads.tapatalk-cdn.com/20170904/543b9d15897753492b0a82dd889f0561.jpg)(https://uploads.tapatalk-cdn.com/20170904/a10393cda6296ef795e603b6792c82cf.jpg)




Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 04, 2017, 10:57:16 AM
(https://uploads.tapatalk-cdn.com/20170904/b6809a2387aeb8b2b5eedd50ebf2ca96.jpg)(https://uploads.tapatalk-cdn.com/20170904/be22e1d7a2ec1515495d1cea1c5b5ff7.jpg)(https://uploads.tapatalk-cdn.com/20170904/f5260961a66884c06c848fae393338cc.jpg)(https://uploads.tapatalk-cdn.com/20170904/12382bf5ce10e9207cb646173af4f110.jpg)

Scale airfoil in last image




Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: sanjayrai55 on September 04, 2017, 11:00:58 AM
 {:)} {:)} well done  :thumbsup:


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 04, 2017, 11:05:16 AM
Thanks Sanjay  :hatsoff:


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: samayaraj on September 04, 2017, 11:38:19 AM
Oh man, I thought you did this with various cross section Hot wire cutting. ITS OSM OSM OSM man! I love this. Let me try your work. I had a plan with hot wire cut, but your built totally changed my perspective. Thanks for sharing.


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 04, 2017, 11:58:59 AM
What a genius design isnt it? Such a simple build actually, not too much of sanding work not too many pats to cut out and glue. Once i got the hang of how to bend the foam rest was super easy.

I did not have hot gun so for small parts i used hair dryer and for bigger parts i just moved the foam piece over gas at very low flame lol but much much away from the flame. so i heated the foam on gas and bent it as per recommended  :giggle:


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: madaquif on September 04, 2017, 06:12:06 PM
I have seen this model in person n in flight....great work bro...


All it needs a  multi color led in the exhaust......it will look more scaly


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 04, 2017, 07:55:24 PM
Aquif good to see u on the forums here :D

I'm planning dr mad thrust three colour led afterburner ring :D Was going to order but it was out of stock, the colour changes as your throttle increases, but then landing gear is also missing and in all this bargain i will have to do a little operation and fix another 6s edf setup  :giggle:


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: madaquif on September 04, 2017, 10:27:34 PM
Aquif good to see u on the forums here :D

I'm planning dr mad thrust three colour led afterburner ring :D Was going to order but it was out of stock, the colour changes as your throttle increases, but then landing gear is also missing and in all this bargain i will have to do a little operation and fix another 6s edf setup  :giggle:

contact adil Bhai yaar....hes expert with led lighting systems...I bet he will come up with a good solution...


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: ashish3688 on September 04, 2017, 10:30:45 PM
what a bird....nice flying


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 14, 2017, 12:33:23 AM
(https://uploads.tapatalk-cdn.com/20170913/77df486af4c8638e81d7c04ff3667682.jpg)(https://uploads.tapatalk-cdn.com/20170913/26d87c47c91486d81a3f1aa78017500e.jpg)(https://uploads.tapatalk-cdn.com/20170913/05204401345d93cc9ed8875cee6e1829.jpg)(https://uploads.tapatalk-cdn.com/20170913/4fe3e488c81d445dfba8f6cfcc943a31.jpg)




Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 14, 2017, 12:34:49 AM
(https://uploads.tapatalk-cdn.com/20170913/a88fe7f1d7cc228bf4884f83c5e62fb0.jpg)(https://uploads.tapatalk-cdn.com/20170913/eea37daf8d02c6bb9e02b7a4f4777914.jpg)(https://uploads.tapatalk-cdn.com/20170913/d0774aa5885db5c92fe2b04047aeb3ba.jpg)(https://uploads.tapatalk-cdn.com/20170913/ecbfbb130ffbdb734673abe14886630c.jpg)




Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: tushar50 on September 14, 2017, 06:42:51 AM
Amazing. Please post a direct download link for the plans, i am not able to find them and what did you use to paint it?


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: tushar50 on September 14, 2017, 06:45:28 AM
What are the flight characterstics .  Do you have to land it fast or can it land slow and also is the takeoff speed high?


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Khushahal on September 14, 2017, 07:18:47 PM
Hats off Nakul... :hatsoff: Great work.... I am also working on a EDF jet though the setup is on its way to INDIA.... Just was curious enough to know what setup you used for this jet? The lipo capacity, c rating , esc config, flight time, rough stall speed and the flying experience . Please share some info with all of us..  :)


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 15, 2017, 08:46:38 AM
Thanks Khushahl,

Edf unit is = FMS 12 Blade 70mm edf 4s version (there is also 6s version which gives about 2.2kg thrust)
skywalker 80A Esc
Zippy compact 2200mah 4s 60
Turnigy Nanotech 2200mah 4s 75-130c lipo

EDF pulls 70A at full throttle. bigger lipo's will be able to provide more amps but 2200 just fit fine on my jet and balance perfect.
I did lot of research on edf units and found out that FMS is a very big brand and they have really high end edf jets and they use their own edf units on their jets, so i was like i might aswell order one of their unit which is tried n tested.  They claim thrust to be about 1600g but it is near 14-1500 grams for sure on 4s, you can watch in above videos how i handlaunch the jet so effortlessly.

I haven't noticed complete stall on this jet, only once after vertical hovering (this jet can do vertical hover for few seconds) past that due to no thrust vectoring the control surfaces don't work. so practically u can slow it down in wind to zero and it won't fall down form the sky haha. See video below. All i can say is this is a dream jet to fly, it flies just as good as it looks, at near 1kg AUW it glides amazing, u can actually watch the repainted maiden video where i take 3 approaches to be able to land as it glides so far haha, well u can always stall it or slow it down by elevator input. :)

https://www.youtube.com/watch?v=mzjG05vrknc

Hope this helps & all the best with your build :)

Nakul


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 15, 2017, 08:51:20 AM
This mirage flies unbelievable. It can be flown fast and slow, u can slow it down in high alpha mode to an extent that it will hover vertical for few seconds (see video below)
When u go full throttle its super fast just like any other edf jet (but not even close to my funjet ultra, efxtra etc  :giggle: )

Windy days are perfect for slowing down the jet against wind pulling elevator stick down. There are no interlocking parts and you are relying on surface to surface glue to hold it all up so i do not recommend landing the jet in high alpha mode and stalling it, i recommend adding foam skids like i did and do a scale landing and let it slide

Watch landing ont his video:
https://www.youtube.com/watch?v=mtk3DD1W2Ms


Slow flying on windy day:
https://www.youtube.com/watch?v=ZL_JGBb5Z_o


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 15, 2017, 08:54:34 AM
Plans attached, please note i printed these plans at 110%
i wanted slightly bigger size jet, you can scale your plans accordingly, i wanted to do slow scale flying so i went for slightly bigger size, or it would be over powered and fast all the time.


Cheers!


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Imperial fire on September 15, 2017, 10:27:26 AM
Great build mate...good paint job too...keep up the good work


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: prabal276 on September 15, 2017, 12:51:46 PM
A beauty!
kudos!


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: niteenk on September 15, 2017, 03:50:18 PM
Awesome build Nakul !  :thumbsup:
Where did you fly this in Pune?


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 15, 2017, 06:50:45 PM
Thank you @ Imperial fire , @prabal276

@niteenk we fly at ramtekadi with PAA group.


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: sundaram on September 15, 2017, 07:36:56 PM
Thats a beautiful Jet.  {:)} {:)} {:)}


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Khushahal on September 15, 2017, 07:45:25 PM
Thanks Nakul for the detailed reply and wishes. The more I see your videos, the more inspired I get to build one of these... :)  What model would you suggest for a first time EDF build? I had red arrow i.e. BAE HAWK or a YAK 30 in mind due to their trainer configurations...   


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 15, 2017, 09:56:05 PM
its my first EDF build aswell. but i've built maybe 10 other pusher and mid mounted jets so i have enough flying experience, i can't advice u on the jets u mentioned, do a lot of research and watch videos of other builds and finalise then :)  Yak & Bae hawk both sound good to me.  Mirage also flies super smooth, you should have some delta wing flying experience, the controls are too sensitive, if yes you are good to go. Bending foam needs some experience, i must have wasted a sheet but got a hang of it later. all the best :)

You could also build the mid mounted profile jets like F35, RCpowers mig 29 v1, free plans and insted of prop you can mid mount your edf, that will be the best and lightest flying trainer edf jet you can build.


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: tushar50 on September 16, 2017, 10:22:55 AM
Which battery are you using and what did you used to paint it?


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: tushar50 on September 16, 2017, 10:44:07 AM
Sorry, i did not read the earlier comment in which you said that you are using 2200mah 4s.
But, how did you paint it. Spray cans?


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 16, 2017, 03:08:41 PM
No acrylic colours 😊 with a brush. Whatever painting lessons took in school putting to work 😂 its best to google ur paint scheme n copy some photos then just brush!




Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: gaurang.1972 on September 18, 2017, 10:01:32 PM
Excellent build nukul {:)} {:)} {:)}


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 19, 2017, 01:09:41 AM
(https://uploads.tapatalk-cdn.com/20170918/b72640baedbb4e5e18d562bea9054977.jpg)(https://uploads.tapatalk-cdn.com/20170918/ec80880bf8fcdfacb9e30df4055c17f1.jpg)

Some images of paint process




Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on September 19, 2017, 01:10:15 PM
thank you :)


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: omkarnik on January 26, 2018, 08:32:39 PM
Hey
Can u please tell me  where i can get the EDF Unit


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on February 05, 2018, 05:27:15 PM
Omkarnik, replied your msg.


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: tictoc21 on February 05, 2018, 08:30:35 PM
Nice built Nakul


Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: Nakul Ambilkar on February 07, 2018, 12:40:56 AM
https://youtu.be/A4IRU1fxhiI

Chase cam video




Title: Re: Scratch Built Super Scale Mirage 2000 70mm EDF
Post by: K K Iyer on February 07, 2018, 01:27:57 AM
Terrific!