How to Build B-2 Spirit Bomber 2500mm RC Plane

I have a request from one of you on my Berkik 3 flying wing video comment, it says to try adding landing gear on it, so this video is an answer to it, but instead using Berkik 3, I use B-2 Spirit model. This RC model plane also inspired by latest Freewing B-2 Spirit model and I enlarge it a bit to 2500mm. I always thought an RC B-2 Spirit is just an RC flying wing with landing gear, maybe just like a walking in the park, easy.
I choose twin EDF setup for the powerplant, I use 70mm 6 blades 4S EDF. I test them on test bench, and each of them can reach about 1200-1500 gram of thrust (without thrust tube) with 80A ESC. But it turned out far from it, just like my Mirage and F-35, 70mm 6 blades 4S disappointed me once again. I have 70mm 6S 12 blades EDF but only one unit. So I swap them with pusher props configuration.
I use twin DXW 3536 1200kv brushless motor for pusher prop setup, with 50A ESC and 4S battery (2200mAh), using 9 inch 3 blades propeller. Pusher props give enough power but still she couldn't take off from the ground, I suspect the front landing gear is not high enough to give the plane slightly higher AoA. This model is the heaviest model I ever build and fly, it's 3000 gram, yes it's finally fly by hand launch. The weight before adding ballast is 2500 gram and I had difficulty on finding things to be use for ballast, but I got the idea from real gliders, they use water as ballast on each wing. So I fill 2 bags of water each weigh 250 gram, and place them on the nose to balance on the CG. I copy the CG location from Freewing's model and resize it according to my model scale.
I also use drag rudder, the plane is very stable, easy to control and floating in the air. I'm not sure it's stable because of main the landing gear doors that always open or because of the drag rudder, I think the model is a success for me even though doesn't use EDF and can't take off from wheels, but until this video is uploaded I already in the process swapping landing gears with retract landing gear that use bigger proper wheels and higher.
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#rcplane #depron #b2spirit
You can download the plans on the link below :
A4 Plans : paper-replika.com/RCplans/PR-...
A0 Plans : paper-replika.com/RCplans/PR-...
A3 Decal : paper-replika.com/RCplans/PR-...
Build instructions :
paper-replika.com/index.php/r...
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/ @juliusperdana
Playlist :
00:00 Middle Section
02:35 Installing EDF 70mm
04:08 Making homemade landing gear
09:16 Taxi test
09:59 Continue building middle section
16:03 Outer wing section
19:45 Making drag rudder
22:38 Making cockpit and air intake
26:47 Covering with painted laminating film
37:58 Control surface and decal
41:14 Maiden Flight
42:17 Pusher prop configuration
43:36 Maiden flight #2
Specs :
1. Wingspan 2560 mm / 100.7 inches
2. Flying weight : 3000 grams/ 105.8 oz
3. Wing loading : 26.2 gram/dm2 - 8.6 oz/sq.ft.
4. Wing cube loading : 2.4
5. Wing Area : 114.36 dm2 / 1773 sq.in.
6. CG : 58 cm / 22.8 inch from rear center point to the front
Electronics (pusher)
- 2x DXW 3536 1200kv
- 2x 50A ESC
- 2x Battery Lipo 4S 2200mah
- 7 x 9 gram servos (micro servo)
- 50mm, 2 x 60mm foam wheels
EDF :
- 2X 70mm 12 blades EDF
- 2x 80A ESC
- 2x 6S Lipo
Materials :
1. 5mm Foamboard/ Depron/ Polyfoam
2. 2mm Plywood
3. hot glue, UHU glue, CA glue
4. laminating film
Tools :
1. Hot glue gun
2. Heat gun
3. Covering iron

[@pascalfust1035]

The stability of this aerodynamically complex airplane is astonishing. You did a perfect job - congrats for the design

[@JuliusPerdana]

Thanks a lot!

[@lamtungle5510]

the most beautiful, the most unexpected, the most fun project you will ever do!!

[@JuliusPerdana]

thanks

[@RCGemblung]

yes agree

[@thecorbies]

What a landing! One of the best I've ever seen (and I've seen a few). Regards Mark in the UK

[@JuliusPerdana]

Thank you

[@Mr-CRIZ]

bro is really genius, instead of buying some parts, he makes of his own. Appreciate it.

[@AerialWaviator]

Amazing detail in this build Julius. Some times things don't go as planned, and thanks for sharing these lessons too. Overall a great success!!

[@JuliusPerdana]

My pleasure!

[@spaced-mouse]

With the setbacks you experienced, it must have felt amazing to get the plane in the air! Great work!

[@menggokil871]

Wihh keren Bang, andai ada kontes/perlombaan RC Pesawat kayak diluar negeri, pasti Bang Julius auto menang, soalnya top top karyanya

[@peterfrigge5803]

This is a fantastic looking RC model that even flies. I admire your skills building it, hat off!

[@JuliusPerdana]

Thank you very much!

[@mariosepulveda6375]

You are a genius Julius, I love your perseverance!!!!!

[@alduff229]

Great job. I built a B2 as a slope glider and had some success sloping it. I wish I had put pusher motors on it after seeing your success

[@PolygonRCbyMrOak]

I really like the water balance. Great job!!!!!

[@UKPete]

Great job Julius. once she was in the air she flew really smoothly.

[@RCGemblung]

really smooth

[@zolatanaffa87]

hi Julius, nice work! And now, to close the circle, the next one is.....B1 Lancer!

[@jumpingjacks5558]

Great project. Great looking and flying aircraft. Congrats.

[@stampatur]

Great job. Excellent talented model builder.

[@specracer28]

Amazing build and also I can't help but find it funny thinking it probably has the same size RCS of the real B2.

[@januszpolski4228]

Awesome plane and really good work. Congratulations!

[@davidwatkin1484]

👽👽👽👽👽👽👽👽👽 Julius, you are an inspiration to our hobby. Thank you for so many different builds. Love your work. WINGMAN

[@prep0wer]

You can use boat axles to move the motors to the front. This type of plane is best to use a long elastic band for take off power with a small hook on the front. EDFs kick in on 20m/s so run harder.

[@mohammadanas1552]

Amazing project 👍

[@lopezlopezjesus]

Excelente trabajo, es el mejor de todos tus proyectos amigo!!!!!!! Work excellent my friend, the best fly!!!!!👍👍

[@VTOLKits]

Again, great job ! ✈🛩👍

[@walk4718]

Sir you must have the most tenacity on KZbin Great job!!

[@JuliusPerdana]

So nice of you

[@InsanityMega]

that looks absolutely amazing, defined deserves a like

[@JuliusPerdana]

thanks

[@IFIXCASTLES]

Great job looks great!!

[@honda2555]

Respekt vor dieser Leistung und Hartnäckigkeit !!!

[@hinduwarrior123]

Very very difficult project! I salute you and your efforts! Lots of good wishes from the Indian Himalayas!👍👍👍👍

[@JuliusPerdana]

Thank you very much!

[@wingsab]

Much respect. Wow. Well done

[@mrstude]

Amazing ! Great job !

[@pietroseven8228]

I should speed up my builts like this, impressive and the effort during maiden, great!

[@JuliusPerdana]

Thanks

[@6147sowe]

Amaizing Om Jul...liat waktu prosesnya enak bingit..sekali lg videonya tak saia skip2x

[@robbyg3989]

Amazing build! Congratulations!

[@JuliusPerdana]

Thank you!

[@seantheberge5456]

Good job! Your an inspiration to the hobby.

[@JuliusPerdana]

I appreciate that!

[@jasonranaweera3630]

That's inspiring for real mate...Nice job!

[@JuliusPerdana]

Thanks a lot!

[@franmisantone3230]

really nice work , it looks awesome , great job

[@JuliusPerdana]

Thank you! Cheers!

[@tossedsaladandscrambledegg8576]

If at first you don't succeed, try try again! Well done!

[@JuliusPerdana]

Exactly!

[@apa1982]

Felicitaciones por los videosssss, tenes muy buenas ideas y prácticas.

[@FSHSKainon]

I'm out near Whiteman, see them frequently, would love one !!

[@fab0423]

Congratulations 👏Félicitations from France 🇫🇷👍👌

[@erich3507]

As usual Julius! You are just an incredible smart guy

[@JuliusPerdana]

I appreciate that! thanks

[@vishukumar8335]

Good to see stable flight at last..great job.👌

[@JuliusPerdana]

Thanks 👍

[@demetriusvasconcelos5866]

Amazing, great job.

[@kajlac]

Wow! Awesome job!

[@chrisellisrc8787]

Nice build again Julius!

[@dlong966]

Again, another amazing project.

[@JuliusPerdana]

Thanks again!

[@HAWAII-uh7sc]

Big big Aloha from the island of Hawai eat you. My brother are magnificent, you are a genius, Aloha.

[@jgleason2304]

Positively amazing! Can you please do an E2-C Hawkeye next? I had an uncle who flew them in the navy back in the 80s. Thought it would be so cool to build him a flying model of one, but I can’t find plans for one online and am not nearly clever enough to build on from scratch!

[@oscar_ap]

Muito show os modelos de avião que você faz sou fanático nisso e sou escrito no canal 👍😃

[@sanderssolarisuportetecnico]

great work

[@genuissr]

Good job, Nice plane

[@AdulMaling-tg3yx]

Pemerintah harus bisa kembangin orang2 pintar seperti ini

[@thecelt4807]

awesome man ... real fun

[@piero1197]

Semenjak tertarik dengan pesawat tempur ahirnya ketemu dengan cenel yg sangat menginspirasi ini, semangat terus om👍

[@JuliusPerdana]

terima kasih udah nonton jangan lupa subscribe hehehe

[@tuahsakato17]

Anjay, bang Julius anda inspirasi kita semua yang suka mödel pesawat terbang. Salam dari Jerman bang, terus berkarya.

[@aryogono6338]

Hands on banget Jul 👍🏽

[@HAWAII-uh7sc]

Keep up the good work all you need is sponsor you are super super talented brother.

[@JuliusPerdana]

I appreciate that!

[@divatv353]

Muanteb tenan om,,,,,,,, bravo om jul,,,,,,

[@fetusness]

I found this channel through IG such great work brother! Cheers 🍻

[@JuliusPerdana]

Welcome aboard!

[@mekateknik3717]

We were impatiently waiting for the end of the project... You should cover with fine glass fabrics and epoxy resin to gain strength and hide the depron underneath. You have no other runways for take-offs, this terrain is dangerous. I remember a video where it ended badly... And could you launch a vote to choose the next model to make? Subscribers could participate and vote among 10 different planes. And your boyfriend is a great plane laner you should work with him every episode. 🤣👍❤

[@Flybrei]

Very cool 👍👍👍

[@maxdragon91]

Hi Julius this is a great project! I use FT foam board to build aircraft, can you tell me the length of the fuselage? I have built your F4 Phothom with prop and will install a 70mm 12 EDF soon.

[@yudraffarkan3184]

Good job,, thats incredible, its amaźing,,really wonderful!!

[@JuliusPerdana]

Thank you! Cheers!

[@yudraffarkan3184]

@@JuliusPerdana wow..yore experience is very expensive,.salam satu anak bangsa

[@adcdsasa6526]

Great job man N1

[@newerarc4784]

Another awesome build. Great job!

[@JuliusPerdana]

Thank you 🤗

[@N99JH]

Fantasti job, Kudos!

[@Grimmzt]

Trimakasih om

[@JordanyMonegro]

Great project!!

[@JuliusPerdana]

Thank you! Cheers!

[@wiwingdirgantara458]

Gila, keren banget Semangatnya itu sangat menginspirasi Terus semangat berkreasi dan berkarya

[@jamestalbert466]

Very very good job, i enjoy this video

[@JuliusPerdana]

Thank you very much!

[@pungkysasando3346]

Jose Om ini yg di tunggu2 🛩

[@lyaa3310]

Good job bro..

[@sangpemburu4106]

Mantap bro, ternyata membuat bomber B2 Spirit semudah itu..👍

[@aliabithalib3696]

Enak d liat nyatanya klo bukan rc bikin engine nya aja susah

[@pressloh]

Very.....very good 🤩

[@VEERsciencePROJECT]

Nice work 👏 👌 bro me also make this but not your size but my b2 bomber fly normally with out Rader and really u awesome

[@arisvandesteeg-ds3iu]

Hello julius,i love this plane i have build my version with a front motor,with folding propeller,i also use a soundmodule,with sound of a real spirit ,my compliments for your building and designs

[@JuliusPerdana]

do you have youtube video of it? Share please thanks

[@arisvandesteeg-ds3iu]

@@JuliusPerdana hello julius,you have to wait for the maiden flight,until the wetter in my country (the netherlands)is better as soon as possible i let you now,regards

[@arjudina5586]

Great job..

[@lcfflc3887]

it deserves a paved runway, too bad seen it take off from such rugged terrain.

[@80wahyudi]

amazing 🙏🏻

[@nimrodquimbus912]

I love it, great skills, use Gorilla glue for more work time. Hot glue only where needed for tack holding.

[@carlosalbertosilva3176]

Amazing , This is fantastic

[@JuliusPerdana]

Thank you very much!

[@contareserva9052]

smooooooooooooth landing!

[@aminizia6347]

Very nice

[@madhukarjonathanminj2772]

with the pusher prop conversion,is it possible to add retractable gear?

[@angelosardi9442]

Great job bro!

[@JuliusPerdana]

Appreciate it!

[@M.SKhan123]

Excellent

[@zeruelmatt9302]

keren om 👍🏻👍🏻👍🏻 ditunggu built model su 57 felon 😁

[@pabloalmada7710]

Hello, I like very much your job, what kind of film do you use to covriing and other question is, only can fly with the drag rudders open? I thougth that only are used opening to drag the side you want to turn and then to fly right both closed

[@ArneChristianRosenfeldt]

21:43 I love the hidden push rods.

[@flymachine]

Interesting using water like that, if the bag bursts you lose valuable electronics, I’ve always admired how you show your failures and successes because that’s what scratch building is all about

[@JuliusPerdana]

It burst once, after failed on the second hand launch with EDF, and it didn't reach the center compartment. So I did it again with double plastic bags

[@ddaero3001]

Good Job

[@aldozusano5090]

Buen trabajo Juliuz realice también el me 262

[@georgecain22]

Yea buddy you’re awesome great work thank you so much 👍

[@JuliusPerdana]

thanks

[@georgecain22]

My PT17 is still in action it’s done me well for about two years now thanks again

[@shahriarhasan6972]

@@JuliusPerdana how do I contact you? E-mail details please.

[@lesliemeehan3724]

have you tried the bungee launch for EDF and other planes

[@nikemamut8668]

Keren bgt om.

[@JuliusPerdana]

thanks

[@AEROERGO]

Hi julius!, what a build you got here!, Congrats! - It´s funny hear the same music as in "X-Jet channel" hehe. I wonder if you got some issues with two different brand ESCs. Very interesting how do you build the attach for the outer wings and the drag rudders, they where really useful in flight? - You will have to do something with that runaway / soccer field sonner or later...

[@JuliusPerdana]

yeah, it helps on turning

[@pmdalamin52]

Wow nice 👍

[@dogpiebaldhd7372]

wah keren om

[@pagentyt6043]

very good projeckt 💪

[@JuliusPerdana]

thank you

[@gulsmvlogs4170]

Very nice!

[@JuliusPerdana]

Thanks!

[@user-rf4xv6dc2o]

Kereen om 🔥🔥 project selnajutnya b1 lancer om dengan diy edf pasti keren

[@JuliusPerdana]

DIY EDF ga visible om, mending beli karena EDF susah dibikin DIY, yang beli aja kadang melempem kok, apalagi DIY