Reptile Dragon2-A Designer's Perspective/In Depth Review, and Discussion of Design Concept
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- Опубликовано: 29 авг 2024
- A really in-depth look at the Reptile Dragon 2 airplane.
This was the plane which we think is possibly the best representative of it's type, in the 1200 mm span class of recent designs.
With a low aspect ratio, Effeciency is less than ideal, but it's portable and simple. People often comment on the "super efficiency" of planes similar to this. It must be relative to their mini quads, because they are not nearly as efficient as planes with longer wings. So what good are they?
They are intended for short to medium range FPV, are manueverable, portable, and are simple, as well as robust.
This is an honest review of the plane as it comes in the kit version, and perhaps you'll see some footage from it in future videos. We intend to use it for autonomous and FPV flying in places where there is not a suitable landing site for higher performance aircraft.
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Spike Webb
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Thanks for watching and have a great day!
I could truly hear between the line your mountain of knowledge on this subject. Very refreshing listening to a true Pro!
Likewise, I'm very impressed with the quality and technical aspect of your videos.
@@FPVREVIEWS Thank you very much!! Indeed a big technical challenge it was
Great review FPVReviews. I always find your videos thorough, entertaining and well made. I just added a Reptile dragon to my hanger a couple of months ago but have not gotten around to assembling it yet.
This review [for me] is just in time.
Again. Keep up the outstanding work.
I just purchased this kit version for $104 and for that price it’s hard to beat. I’ve gotten a few flights in and even stretched it out a bit in FPV. Comparing it to the plane I took the internals from the Zohd Nano Talon Evo. So far I’m liking this one better but it’s not as efficient with it being a twin lol . I’m using 2x 2306.5 1900kv motors running Gemfan 6042 props. Can’t wait to get more flights in 🎉
Welcome back!
Forgot to talk about the airfoil on this Reptile Dragon 2. It's a semi symmetrical foil. moderately thick. looks like the same foil from root to tip.
I love Reptile-2 so much that I bought a 2nd one. Looking forward to your build.
I did not modify anything and it’s a beast/tough little fpv platform.
I completed my build, 3D-printed landing gear to avoid hitting props at landing. I am running 980kv SunnySky motors which draw less current compare to recommended 1800kv motors. My original Reptile has 1750kv motors and it draws up to 40- 60amps. The 980kv motors draw around 15 to 20 amps.
Excellent review. I think the reason a lot of these companies go with the high aspect wings is because they can fit the kits into a much smaller box for lower shipping cost overseas.
Yes. Also better for transport, and for some reason, people like the idea that a short, stubby wing can still be efficient. even though it is not.
I hope you do a build video. I've had one partially built for about a year and I'm going to finish it over the following month. If like to see what options you utilize.
I actually have been busy with life, and other projects, and have not flown it yet. I have a pixracer r15 in it, and about ready to fly, but have not flown yet. need to take the time.
13:46 this is for Drop Tanks when you youse 2 Gas Engines.
Or Drop Batterys.
Great video my friend, this video so entertaining and inspiring to me. 👍
I'd like to see how you attach the tail section to the fuse. I'm assuming you'll stay with the bolts and reinforce with tape?
I got stalled out when building mine by trying to decide the best method to attach the inner wing panels to the fuse. I wish the instructions provided some best practices type guidance on this part of construction. What I'm considering is gluing the CF spar to the fuse and panel and also gluing the pannel to the fuse. But, that seems like overkill and will make future maintenence difficult.
I just used bolts to hold the rear fuse to the forward fuse. seems Ok, but since the bolts go in from the side, and not in the same direction as the parts they are trying to hold together, it's not ideal.could wrap with a ring of tape, I guess... of if you are going to stick with one type of tail, just glue together. I have had some issue finding the right glue. I started using the glue that I show in the video, but it did not work at all. found some E6000 and that works good.
this is why I design and build my own airplanes most of the time lately. this started as a review channel, until I got frustrated with quality and got out the drawing board.
Good video! When is the flight? Cheers
probably in the next week or two. decided to put a Pixracer r15 in it. Not the radio link version. Found one on eBay, without a case, and found a STL for a case from painless 360 for it that fits very well. installing it now. got the servos in. easy. decided to try the stock pushrods, but beefed up the control surfaces where they attach with ply. also reinforced the nose section and floor with 3mm ply. built both tails to try. so far so good. need to build a battery but will do that last. trying to decide whether to use a GoPro or a run cam Thumb. have the normal one and 4k version.
@@FPVREVIEWS fantastic, I'll wait for the results!
Any update on this build? I am holding on to see what mods you will make.
Good review, not quite sold on the aero nose print, considering you immediately start talking about bolting cameras and pan/tilt systems on top. I think the latter is far more detrimental to aero performance...
You are probably right. Depends on the size of the camera, but it would have to be tiny, for the aero nose print to be an advantage.
A second option is gluing the spar to the fuse but relying on the esc covers to hold the panel in place..... maybe reinforced with tape????? Having trouble deciding.
I would just glue or tape securely the inner wing section to the fuselage./wing stubs. it's the only way to Make sure that the wing sections align and stay together IMO
I love the idea of putting the reptile dragon in a. backpack, but I guess I'll just carry a roll of tape with me if I use it that way.
Sorry for being late getting to the comments to answer questions. saw your emails, and that is fine, will respond shortly, but thought it;'s best to respond here, so others can benefit too. cheers!
So you didn't glue yours? Any issues doing it that way? I'm leaning towards glueing.
I want to youse an Plastic case arounde the 2216 Motor with 8060Gemfan Prop. But the Problem is I can not find small Spinners in rewersed direction. Printing a Spinner is to complicate for me. I want to youse this Spinners for more arodynamic and it looks cooler
I too would like it if smaller spinners were made, and in both rotations. Do have to consider Ram air cooling as important for these little motors, so the spinner could be just built into the prop nut, but would be good if it extended slightly beyond to cover the first few mm's of the blades, as they are very bulky there at that distance from hub. If I ever get good enough at fusion 360 I would like to print my own spinners. that would be awesome. I have a feeling that AI will learn it well and end the world while it's at it, before I learn it that well...
Please can you include purchase links to the parts you mentioned, thx
Отличный самолет. Для установки контроллера CHUCK от parrot disco. Чтобы летать на 4g. Но я выбрал больше. Clouds x-uav. Тоже на два мотора. Но более грузоподъемный.
I just saw your review, sounds like you have some knowledge on design, probably more on flying rc planes...I have to say, I've bought so many foam planes and this particular bird is designed, for the money, extremely well...yes, some of the installed components could be better, but I have so much to disagree with you about your critique, that my finger punching my phone will tire me out...I suggest you look at flying reviews on the RD and watch how well the bird design, it's structural integrity, and flight characteristics are, it's quite sound...but you go ahead and critique away, I'm glad I bought it and I'm sure others are as well
so it's not ok with you that I'm critical of some features and design choices? A sport FPV model like this is compromised in many ways intentionally by design. I actually bought it because I liked it and I thought it might be handy, and good. I bought with my own money. Things can always be improved. Yes, I design my own aircraft. anyway, too bad you are offended by this review. I meant it to be a discussion, not an attack. hope you have a great day, and find a better way to see things.
@FPVREVIEWS ...its not an attack, don't be sensitive...I retired from Aviation after 43 years, I'm probably more critical than you by ten fold. I bought so many different models, just looking for the right combination of design characteristics for fpv. Yes the angle of incidence on this model, being minimal as its close to being a plank design and the wide chord can produce unwanted effects, depending on speed and angle of attack. To be clear, my dragon is built and have yet to maiden, but after watching countless reviews on intentionally trying to stall this bird, all stalls were gentle, no tip stalls, just a nice nose over.
So I'm not slamming you, I just don't agree with all you said...I watched your entire video, your knowledge is evident.
I'm sure I'll watch more of your videos...aircraft guys are a proud people
by plank, do you mean a constant chord wing? or nearly so..
if so, then yes, by design, that planform is known to stall at about the same time. so no tip stall. it is also possible to achieve stability by just having a further forward CG. and depending on the control surface deflection and size of elevator, easy to limit, so that it cannot gat the wing to a critical AOA in a dynamic situation, like in actual flight.
Funny thing, I have been too busy to maiden mine as well.
I did see other reviews, and yes, seems like a good overall design for intended purpose.
maybe I'll use mine as a chase plane to film some other aircraft. would be fun to do proximity and aerobatics too. :) @@theroc495
@FPVREVIEWS ...exactly, I concur...have you looked at bonefied pirate, I think its kieth that has that channel...his videos made me pull the trigger for the dragon...plus, after his testing, it was clear that the more traditional tail was better overall for inherent stability...I'm glad we're all rosy on this subject..🌹