Project 50mm speed jet V2 (Top speed xxMPH)

[@StefanKreuz-e4w]

Please stop designing these little jets. My hobby cellar is almost bursting with all the models I printed from your designs. Really great job and a very nice design.

[@hotlapkyle]

Sorry I’m obsessed 🤩

[@HappySunnyTraveller]

I know 🙂@@hotlapkyle

[@HEYDUDEPUTINWANTSHISMONEYBACK]

Send your surplus to me😂🇺🇸

[@ColinTabb-m3k]

Great design…..very reminiscent of the F-107. Looks extremely stable. This is why we test things. Great job!!!!

[@FarmerFpv]

4:14 Smooth landing. It looks awesome! You're killing it with these small EDF Jets!

[@christopherleveck6835]

Hinges- 3m Blenderm..... It's like magic...... I've been flying for 45 years. I haven't found anything else that works as well as this stuff. And it seals the entire length of the control surface. Bevel the control surface. Lay it on top of the wing with a 1/32" shim as a spacer. With the top of the elevon resting on the top of the wing with spacer in between the two. Basically the elevon at its farthest extreme travel all the way until it's resting on the top surface of the wing with a spacer in between... Run the tape the full length of the hinge line. Now move the elevon into it's normal neutral position. Run tape the length of the top of the hinge line. If the elevon down travel is restricted, you need a better bevel or a thicker spacer. The tape sticks to anything. It's flexible. And it lasts forever. It's sold as hinge tape by some hobby companies in small quantity. Or you can buy it from your local pharmacy on a lifetime supply roll for the same price.

[@hotlapkyle]

I need to find this stuff! Never heard of it l. Thanks

[@akaFrits1]

At MotionRC it’s called Benchcraft hinge tape, but afaik it’s the same as Blenderm tape.

[@FlyMIfYouGotM]

​Check the pharmacy section of your favorite big box store. The stuff was originally made to hold bandages on wet/oily skin. It makes great hinges. @@hotlapkyle

[@astronut71589]

That field is amazing. I wish I could find one like that.

[@kenkingsflyingmachines2382]

Far-freaking-out! Overstressing hinges on a model? I love it. Keep it going.🎉

[@adamhale6672]

That is really impressive! I'm excited to follow the design-build-crash progress on this build. One interesting thing is there are these 50mm jets sold by Arrows. They're rated for 3S but we exclusively fly them on 4s and they really get going. We clock them peaking our around 84mph. I am sure that your model is much more slippery than those. I noticed that the arrows 50mm edf is a 2627 4500kv motor with an 11 blade flan vs powerfuns 2611 5000kv motor with a 12 blade fan. Your plane is much more aerodynamic than the little pocket jets, so you may be able to get some additional juice out with some more motor experimentation.

[@hotlapkyle]

Great info!! I’m totally open to try new power systems 👏

[@deldridg]

You must have eyes and reactions like the gods to fly like this! Well done mate and thanks for making such an entertaining (and compelling) video. Cheers from Sydney - Dave

[@protator]

I really like the overall design. Personally, I'd print a version with the nose right in between this and the previous version and with the impeller moved back half an inch to compensate for cg. Would let you straighten out the inlet duct slightly more as well. Maybe add a quickchange feature to the exhaust nozzle? Some twist lock mechanism or maybe just a thread on design. That'd probably add another gramm or two in the rear ^^ Looking forward to the next iteration.

[@Locoman3801]

With this particular plane ( model ) - try using some small-ish Kenard wings midway back from the nose to the leading edge of the main wings & angled slightly downwards to try to lift the front upwards a bit , or , try to add a small amount of length to the tail end or tail weight to your model & see if that works any better ; also , how are you able to video while flying your plane?

[@johnymodem1326]

Just think of how difficult breaking the Speed of sound barrier was. Break, Learn, Improve and implement, Break, Learn, Improve and implement .... You'll get there. I am going to enjoy the journey. I hope you embrace the growth! Keep up the great work :)

[@hotlapkyle]

Yes I can’t even imagine how crazy that must have been. I was watching a documentary on this with the bell x1 and they lengths they had to go through to keep the jet alive was insane

[@ArneChristianRosenfeldt]

Saab Draken looks like it was simple. You start with a working axial jet engine.

[@toolbaggers]

You don't need a radar nor a cockpit so get rid of the nose and s-bend intake. Make it look more like a Lippisch P.13a (like what the plane looked like after the crash but with a straighter intake.) Mount two 2s batts in series in the wing saddling the intake. Or everything I said previously and get rid of the vertical fin an make wing tip vertical stabilizers for decreased wing tip drag.

[@TinyHouseHomestead]

He could just build a D-21 drone! 😱😁🤪🤣👍👍🇺🇸

[@ArneChristianRosenfeldt]

The nose is for battery and cg.

[@christopherleveck6835]

My uncle flew the F-107 Delta Dart. His buddy was the only pilot to ever eject from an airplane and they get to fly it again. Google the "cornfield bomber". He ejected, the jet landed itself in a field, it was repaired and he got to fly it again. The jet is now on display at the Smithsonians off the mall storage and restoration site. It's where you can see the Space Shuttle Enterprise. Gerber facility? Also called the Uzey (sp?) facility? EDIT: F-106.... Typo

[@hotlapkyle]

Crazy! Amazing

[@christopherleveck6835]

@@hotlapkyle my favorite part of the story is that the turbine was still running. The farmer called the base and they gave him instructions to shut it down..... I can't imagine having a jet land in my field without a pilot and the thing is still running.... Having to rush back to my home, deal with my wife.... call the operator to get connected to the nearest air base...... Tell the person who answers the phone I need to talk to someone about one of your jets...... And however long all that took..... He gets all the way back out there and it's STILL RUNNING. Now he has to climb in the thing and there isn't even a seat.... Even off it's gear, laying on the ground, it still would be awkward to get into it. And he's got to remember what they told him, and then FIND the controls. I'd love to see the notes he wrote down. He had to get in the jet while avoiding the inlet...

[@hotlapkyle]

@@christopherleveck6835 you’re making me want to make one of them sooner than later!

[@CU.SpaceCowboy]

that park is gorgeous

[@Supercharger86]

What a beautiful little plane, looks like its flying pretty well too. If I can give you a tiny design advice, maybe you should lift the engine intake a little bit more away from the nose cone, so it definitely doesn't suck in any boundary layer 😊

[@krist370]

Looks great. Only thing that looks too big is inlet duct. Also make more rounded inlet. Keep up good work!

[@hotlapkyle]

Yes I should have stayed with 102% of the intake lip. I went 120% to see if it would provide more ram air

[@FoxtrotYouniform]

a humble suggestion for dealing with CoG issues - print your battery compartment 2x as deep as you need, and print some spacers that are about 1/4 of the battery in length. Using spacers behind or ahead of the battery, you can decently 'dial in' your center of gravity by shifting the location of the battery in the fuselage. The spacers would keep the fit tight so it wouldnt shift in flight. It would also allow you to replace spacers with weights if you wanted to offset a fairly sizable weight or drag vactor, like a go pro.

[@hotlapkyle]

Absolutely good thoughts 👍🏻

[@FoxtrotYouniform]

@@hotlapkyle loving your builds!

[@lewiemotorsports3616]

When Ky posts a video I already know it’s gonna be a banger 🔥thing is incredibly stable

[@hotlapkyle]

Thanks! Crazy right. No wonder F1 cars run them to help yaw stability

[@lewiemotorsports3616]

@hotlapkyle you think this would be a good fpv platform? At 90+ mph you'll be able to Chase cam alot of stuff

[@ian5281]

bummer about the crash, but, yeah, thats part of it. Keep up the good work man.. I enjoy the videos!

[@hotlapkyle]

Thanks!!

[@sweetgumnyc7794]

have you thought about designing one the same size but with an 80mm edf? wouldn't that be faster?

[@hotlapkyle]

Absolutely I’ll be revisiting the speed jet! Funny enough my 64mm 6s delta fighter didn’t go much faster. It’s a function of the thrust the motor generates or the efflux. It’s tricky to get edf jets flying past a particular speed

[@amydenton4759]

Great looking plane, good luck with getting it faster xx

[@OregonMotorcycle]

Very cool. BTW, adjusting trims will not affect top speed. Trims are just holding a stick position for you.

[@thedoctor4637]

Doesn’t holding a stick position (that is not neutral) increase drag and decrease top speed?

[@hotlapkyle]

Yes so I’ve been designing wings for years and I’ve found that having anything up or down from neutral trim will cause drag. Any time you deflect air up or down your causing drag. Look up what a “reflex wing” is. I put lots of reflex into my wings that need to be for beginners so they are more stable. Reflex is an amazing feature in a wing. You can run a reflex flying wing without vertical tails because of the natural stabilization

[@OregonMotorcycle]

@@hotlapkyle Yes anything up or down from neutral will cause drag. Say you have 3 clicks of up elevator. And in your vid you said ok now I am going to remove that trim... Go back 3 clicks, now it's neutral, but you are still holding 3 clicks of trim to keep the plane level with the stick. If you weren't, the plane would nose dive. Meaning once you took the trim away, you still held the trim manually.

[@hotlapkyle]

@@OregonMotorcycle absolutely correct. It did have a slight nose down with zero trim but not enough to cause a problem with level flight speed pass. That’s why I did that

[@torquedude]

Awesome, she is flying like she’s on rails! Oh please go 6s on this airframe 😮

[@hotlapkyle]

I will absolutely run a 6s 64mm in this airframe for sure

[@AerialRCFun]

With that one you don't have to worry about sucking any crap into the inlet duct. Funky looking jet - reason enough to own in my book right there. Powerfun IIRC had larger gaps between blade tips and housing which they say is less efficient but I honestly saw no advantage with using Xfly Galaxy fan over the powerfun. Seems like the nose being so long has questionable benefit but I'm no aerodynamic engineer.

[@giantd]

Me again, I've learned to put some "Black Box" orange paint on my run cams, speed meters, etc. for these uh, un- intended disassemblys. Did you figure out the cause of crash? I use the small gps speed meter from J.BAUER Electronics, it looks a bit smaller than yours (look under RC products. I hit 94 mph on mine with a T motor, 6x4 prop, 4S. Forget the motor size.

[@rail4299]

This is so much fun to watch. thanks for posting!

[@Alex000113]

Nice vid , very nice design, (Gripen2 ?). Maybe fly with a dummy speed meter to keep the CoG when testing ?

[@akaFrits1]

About ‘cooling the ESC’: it doesn’t get hot on full throttle, but at half throttle because it has to dissipate heat. It’s counterintuitive but you can check it on the work bench.

[@hotlapkyle]

They typically live perfectly in tightly packed foam jets that insulate way more than my 3d printed designs that have zero insulation. I was just cooling it between passes for max speed

[@akaFrits1]

@@hotlapkyle My point is that throttling back doesn’t cool the ESC, on the contrary it heats it up.

[@hotlapkyle]

@@akaFrits1 from my bench testing I’ve found that the battery, wires, connectors, fan, and esc all heat up while running and cool when off. Not sure how the esc heats up when you’re off throttle. I’m interested in hearing why

[@akaFrits1]

@@hotlapkyle I was talking about half throttle (or so to say 1/4 to 3/4), then the ESC heats the most.

[@moler1964]

The e s c holds and releases power at anything but full throttle and that creates heat

[@toolbaggers]

I think making it look like a manned, full-size plane that has to be designed with specific mission parameters (like having an onboard pilot and radar) besides speed is holding you back.

[@hotlapkyle]

If you check my channel I’ve designed a few scale military jets. This is a fun experiment to see if I get a 50mm to fly faster

[@toolbaggers]

@@hotlapkyle I just discovered your channel a few minutes ago and I'm going through it right now!

[@toolbaggers]

@@hotlapkyle This plane looks like a cross between a F-107a and a Lippisch P.13a

[@evanduncan25]

what an awsome day to fly

[@patrickradcliffe3837]

When you talk of CG being forward are you referring to the amount of up trim you need for level flight? If that is the case delta wings and flying wings have reflexed airfoils to maintain level flight.

[@hotlapkyle]

I have a fair amount of reflex built in. Maybe not enough

[@zsebastien641]

Exactly what I had in mind. My 2 cents then, if I may: The auto stability of your delta wing might need some change ? Plus duct tape as a hinge back-up never hurts. And finally, even on model planes, flutter might be encountered at a point. If you want to go real fast-er you will have to balance (weight) your control surfaces at a point, or face an unexpected event (certainly catastrophic) at a speed you don’t want to lose controle of this tiny thing. Have fun ✈️

[@PiDsPagePrototypes]

How much change is there in the cross-sectional area of the air duct, from entry to exit? Does it neck down to the fan?

[@toolbaggers]

Perhaps make a plane with a F-86 style fuselage with high aspect glider wing. Swept back wings are only good for transonic or higher speeds. The fastest RC planes are dynamic soarers where only now are people are experimenting with swept back wings since they are approaching transonic speeds.

[@Martin-X]

Sweep past 60 deg is great for low speed aerodynamics as well as it cannot stall due to vortex lift.

[@ArneChristianRosenfeldt]

@@Martin-Xshow me a successful plane. F-117 ?

[@harken9978]

why the delta wing on a subsonic?

[@hotlapkyle]

I’m kinda obsessed with delta wings

[@davidwatkin1484]

Interesting chanel, thanks, subbed. What isit called......on Thingiverse?? Would like to scale it up for 70mm Dr Mad Thrust I have, waiting for a ride...

[@hotlapkyle]

I may release the sped V2. It flew the best stay tuned

[@secularsunshine9036]

*You should seal the control surfaces if ya want to go fast.* *Maybe you should do a full length hinge?*

[@Locoman3801]

Another last minute thought for your plane name , try the "X50D" with the "X" being un-named , the 50 being the diameter & "D" being for Delta winged aircraft , just a thought????

[@hotlapkyle]

Awesome!!!

[@Soshstar999]

I still say that you can't go wrong with the cranked delta wing configuration of the F16XL for slow and fast speed, that's what it was made for

[@toolbaggers]

That also had a cockpit for a pilot and a nose to house radar. Any wing sweep is for transonic+ flight for the wings to be inside the supersonic shock wave cone.

[@hotlapkyle]

F16XL is one of my favorites and is on my short list for my next design 👍🏻

[@Soshstar999]

@@hotlapkyle ya recon, it's designed for heavy lifting and stable flight performance and can also use crow breaking if you use the flaps

[@akaFrits1]

@@hotlapkyle Did anyone say ‘Draken’? 😄

[@ArneChristianRosenfeldt]

@@akaFrits1it needs thrust reverse to not spoil the flow over the intake.

[@RubyS.1]

Really cool project

[@toolbaggers]

The F-107a had it's high mounted intake and pointy nose due to the installation of radar

[@TestFliteTV]

Hey nice projects.Do you design your planes in 3D on your own ?

[@hotlapkyle]

Yes I do all my own designs 👍🏻 thanks!

[@uridavidson5]

call this "the tyler-tron"

[@angelofmusic477]

😮this is 50mm EDF on 3 S cell, how much current can it consumed? Measure the current. I think it is likely less than 30amps. A lighter pack like 3 S 1800mAH ,30C should be enough. You get a shorter flight but a lighter aircraft. My 2 cents.

[@simons6208]

I have a dx8 and a gyro gen 2 connected to a dx6 the gyro connects but the receiver doesn't connect what am I doing wrong???

[@hotlapkyle]

No clue! I’ve never used a gyro other than an AS3X eflite

[@leviathan351cleveland3]

Way to go man!!

[@mauritz1774]

Only 92MPH? My heavy full LED 5 InchDrone went 170kmh. I think the Hobbyking funjet can go Faster then this? I thout it can much faster

[@larryegilman1]

Dental X-ray lead from #2 film is 1/32 thick and thin enough not affect the aero to balance better

[@hotlapkyle]

Is it safe to touch? Lol

[@larryegilman1]

@@hotlapkyle my point is you can ballast rc planes easily. Its nearly undetectable on the outside, with little manipulation. Ive used it on mine. Just dont wrap your drinking straws with it. Nice flying design!!

[@hotlapkyle]

@@larryegilman1 I’m going to have to look into this. Basically nothing sticks to LW pla so this would be amazing for prototyping

[@madeleyinc]

Make a weighted sleeve around the exhaust tube to even out the CG maybe.

[@hotlapkyle]

Making a whole new design with the wing forward so the weight balance will work much better 👍🏻

[@Goldfinger140]

How can you fly at this beautiful day without skimming the fog layer? It would have been an amazing picture…

[@hotlapkyle]

Good call, I should have!

[@hornetdc]

How much extra load do you think this can carry? 🤔

[@hotlapkyle]

Haha I could feel the speed reader

[@bushhawkrc3223]

AWESOME MAN Just a question... what does "very efficient" mean? 🤣 Fast... or what? lol

[@hotlapkyle]

So when I fly a design and it feels low drag. When it doesn’t slow very much while turning. The intake or something is holding it back from a potential top speed. I think 120 is achievable I just need to unlock it.

[@hotlapkyle]

Like my mini delta technically has a higher top speed but it isn’t as efficient in turns and when the throttle is off. It slows faster. My pocket rocket is the most efficient

[@kennethcohagen3539]

How about adding a small set of canards?

[@hotlapkyle]

Another very smart idea

[@_PJW_]

You could name it 'The Dart'. It looks like a dart, and even looks like the Convair F-106 Delta Dart. But 'Project50' has a nice ring to it. Name it 'Project24' and you can update it each year.

[@druegeme]

V2 is not a bad name!

[@Solixite]

should i be concernded about using LW pla hinges becuase i put them in my j10

[@hotlapkyle]

I actually have them in many planes. I’m thinking the part that broke had CA glue all over it making to brittle

[@patrickradcliffe3837]

I still say call it Lawn Dart, or the other name for them was Jart.

[@superdon1chw]

Good luck

[@brianwilkins9750]

Where are the files?!

[@fooman2108]

How about naming it F-16xl?

[@hotlapkyle]

That’s on my list to design!

[@aidenkahn4338]

Please make a viggen 90 instruction video would be great!!!

[@hotlapkyle]

If I ever print another I definitely will! It’s too expensive for me to print another huge one. Only if I crash unfortunately

[@aidenkahn4338]

@@hotlapkyle how much would it be for me to pay you to lmfao

[@hotlapkyle]

@@aidenkahn4338 haha we can help you on the group. Just print each part and glue the parts together

[@aidenkahn4338]

@@hotlapkyle allright I hope I can do something where I can hotseap the parts from the viggen to pocket rocket that would be badass

[@anthonysmith3593]

Looks more like a interceptor then a fighter like a f-102/106

[@domacadin]

are the files for this released yet?

[@hotlapkyle]

V3 maiden soon

[@domacadin]

@@hotlapkyleawesome! I am really excited to build this!

[@humbertomontalban3932]

Is this plane is in you cult market place?

[@hotlapkyle]

Not yet but I plan on re designing it 👍🏻

[@aidenkahn4338]

Nice

[@Alt.ZER0]

"Thunder II"

[@jamesturner5427]

Time for you to join a flight club with people with more experience to help you,your doing great but I hate seeing your hard work destroyed.

[@hotlapkyle]

I’m part of a club. I fly during winter

[@hotlapkyle]

Not trying to speak from authority but I’ve been building planes for 15 years and I’ve designed every plane on my channel from scratch in CAD and 3d printed them. More fly better then purchased planes from the web. I rarely get useful knowledge from “club guys” I love chats with aerospace engineers though 😉

[@stephenskierski5633]

aesthetically, I think V1 is a better looking aircraft.

[@hotlapkyle]

Me too!!!

[@marcjohnson4884]

My best F-27 Styrker with an 80 amp ESC would do 130, the best F-27 guys got 200 out of 2000ESC's.

[@josephgomes8543]

Would have been just a bit better if I could have seen the plane flying.

[@allansnelder3292]

try ABS Instead of PLA it works a charm for me just as light too

[@benediktwurdinger7874]

When will the file be available? :)

[@hotlapkyle]

I can release the files. I just wish it broke 100 to be considered a speed jet. It flies great

[@benediktwurdinger7874]

@@hotlapkyle i love the design, pls release it.

[@hotlapkyle]

@@benediktwurdinger7874 I could. I’m almost done with V3. Want to wait or do you like that one?

[@benediktwurdinger7874]

@@hotlapkyle than I am waiting on V3 :)

[@Jetstreamer0]

By the way, you can probably get more speed from a straight wing (not delta wing), as you're not going to go anywhere near the transonic range. Wing sweep will not be useful.

[@TinyHouseHomestead]

Really I think the SR-71 would disagree, ... wait forgot about the X-15! 😱😁🤪🤣👍👍🇺🇸

[@Jetstreamer0]

@@TinyHouseHomestead No, I mean you and your RC plane. They are low-Mach number.

[@hotlapkyle]

Possibly! I will test a hot liner style also

[@TinyHouseHomestead]

@@Jetstreamer0 They are No-Mach! 😱😁🤪🤣👍👍🇺🇸

[@itryit3215]

Did somebody see thhe Orbs at 7:50 ??

[@Solixite]

Has anyone submitted a video of the mig 29?

[@hotlapkyle]

Not yet!

[@christopherleveck6835]

Oh, and nose heavy is ok.... Tail heavy, not so much. Walk the COG back SLOWLY. You'll know when to stop.

[@straycat2253]

The best hung plastic is from a six pack of beer fyi it never wears out

[@straycat2253]

Paint the thing like Brite yellow or red something Brite 😄