Eachine Nano LR3 proves more isn't always better // LONG RANGE 2S FPV DRONE
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- เผยแพร่เมื่อ 16 มิ.ย. 2024
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-- TABLE OF CONTENTS --
0:00 - Lipo batteries are the most annoying thing about FPV
1:26 - Why don't we just use 18650 for everything? Performance.
2:10 - The LR3 runs off of 2 cells. That has some advantages.
My review of the Rekon3 - • Fly 15 minutes w/ one ...
3:32 - How much does it weigh?
3:54 - Flight testing
8:16 - Conclusion: should you buy it?
![☀ Долголёт на час. Ультралёгкий разведчик весом 250грамм. [LR Quad V9 I]](http://i.ytimg.com/vi/j82lL0i88pI/mqdefault.jpg)
Definitely not a quad I'm interested in purchasing or flying but I never skip a Bardwell video. Related to the product or otherwise, there's always some sort of beneficial information to be gained. Much appreciated.
Yeah, it reminds me of a Concept Car at an auto show! Great to look at, but never really designed to be commercial made for retail. Same with this prototype! 🥴🤷
Awww your lil guy at the end is adorable! I guess I haven’t watch enough of your vids the past 4 years to realize you’re a dad?! So cool! Mad respect bro!
Awesome flying and review, Joshua! 😃
Check out the Rekon LR3.5. 3.5" with 2s.
Anyway, stay safe there with your family! 🖖😊
Great video, thanks for all you do.
I'm a Josh Bardwell fan! Dude is SMART! Didn't know who he was until 7 days ago, he is now my goto guy for rc flight! Not just drones! I learned how to make servos work using beta flight!! This guy slick!!
Welcome! Glad you're here!
It needs scaling up to 4 inch props to gain efficiency. That sounds like a fantastic product to me. I really like that they are solving the low 1 x 18650 voltage issues, and hopefully it will be a little less sluggish with more efficient 4" props.
If i'm not mistaken, Dave_C FPV has a new rekon 35, which is basically the same principle as this quad, but made by him, so i'm guessing it would be a little better (this is a 75% biased comment haha, i love his work) but i'm sure it would be really interested to see a comparison between the two !
Well bigger props for more weight lifting. But think lower kV would helped flight time on a 3.5" prop
Yes please do a review of that
imho, zeus fc on rekon35 is not suitable for it, its esc stops working as soon as battery voltage drops below 3 V. after switching to some random cheapo darwinfpv 1-2s board and switching motors to 1404 6000kV, i managed to get 17 minutes of non-stop flight consistently
love the AOS shirt :), good to be part of this community.
The new liftoff map update looks pretty good. How did you go out of the boundaries without getting reset?
Bardwell, I always check your videos when I need of some quick betaflight configurations explanation
dat charger intro though xD!!!
With my old tp3 3" 1303 5000kv gemfan 3016 gnb 3s 450mah 115g auw I got up to 9:20 cruising
And very good at freestyle too
I didn't fly it much, but I did get ~20 minutes on my 4 inch 2S build with 1404s. Dry weight was about 120g though with a GPS module, and 500w VTX. It flew much better on 3S and I've done 10-12 minutes with a 3S 850 mAh battery.
Hi. Do you mind sharing your 2s 4inch setup? I also want to build one, plan on running 1404 3500kv, 4020 prop, and 2s 18650 cell. Dou you think this setup sufficient for just cruising around? Thanks~
LiIon is awesome and so simple.
my Rekon 3 is one of my favourites to fly
I'd love to see you slapping two Lithium-titanate batteries (also available as 18650 size) in there and flying this thing. The specialty of this battery is, that it is very save and can provide virtually infinite current (of course it can't .. but it's close). Also you can charge them in seconds. Maybe it improves the performance a bit?
Thanks for the video, I got one of these recently and it's a nice quad for easy cruising, it is very accessible to newbies, 18650 cells are easy to handle so if you are looking for an affordable cruiser I think it's okay to get it. Did you try to use ExpressLRS with it ? I tried changing the firmware of the R9MM OTA I bought with the drone but the lack of documentation of the FC is a pain, I did not succeed to flash using the betaflight passthrough.
I have a bad experience with this type of drones, they are very fragile but the flight time is great and fun too.
Great video!
For my 5" quad I mainly use 4S 18650 Li-ion batteries. It is definitely good for freestyle and I get a decent flight time.
That's not very much current you are getting, have you ever tried a lipo?
How much time more or less or compared to lipo?
It would be interesting to see how it behaves in a 2s lipo. I guess is a pain in the ass to try that because it doesn't have an xt30 connector but itd be interesting to see the tradeoff between agility and flight time
It just boils down to C rating. A 2s1 configuration like JB used will struggle at maneuvers of any kind. If you run a 2s2 configuration, you can get decent performance and high fight time, but it will be heavy. Larger quads with high TWR, not designed for performance, would probably benefit the most from switching to LiIon. Am seriously considering doing this for my 16.5", because it will literally double my flight time
much better on lipo
Hi Joshua. Love your content. As I understand things this quad is 2s1p. Therefore there will be no additional amps than the 1s quad (1s1p). The Sony cells you are using will put out about 25amps either in 1s1p or 2s1p. The advantage is additional voltage which as you point out will help out with voltage sag in the same way as a 6s quad has less voltage sag than a 4s quad. I want to build a 4inch 2s lion quad... The higher voltage helps as I think you could realistically run dji with this (and would have one if I has not fried my only spare Vista air unit) waiting for replacement parts and replacement dollars.
I could have said that part more clearly. The advantage is that, at 2x the voltage, you pull 1/2 the amps, to get the same watts. So there is an amp advantage to 2S, not in that the batteries can provide more amps, but that the motors pull half the current.
I assume that the Rekon 35 will be a similar story, but maybe the extra prop area will help it enough.
It's a pretty interesting idea. I wonder what the designers can do in the future
You need to fly with moli cells. They have a high discharge current P26 18650 or p40 21700
Wonder if a 3.5" would be more ideally suited for running two 18650's? Wouldn't need as much throttle for liftoff.
3:20 I do understand what you mean but it is simply false that you will get more amps aka current. In a series configuration you will get more voltage and more power but not more current or capacity in mAh (will get in Wh). Just a small mistake, but you mentioned more voltage and continued with more current which can be misleading to newcomers. Overwise good video.
+1 In series, you are limited to the max amp draw of the weakest link. In this case you will only ever be able to draw the max amperage a single cell can provide.
You're right. What I meant to communicate was that, at 2x volts, you pull 1/2 amps, to get the same watts. Therefore the batteries are loaded less and, you get better performance.
@@JoshuaBardwell This statement is also incorrect. By doubling the voltage, you may not necessarily halve the current draw per cell. That condition is satisfied only if the load (the 4x motors primarily) are fixed power sinks. At a higher voltage, they may continue to draw the same current - you'll see that as them producing ~2x the power output. Furthermore, it also possible the current draw may increase.
@@johnfaustus1 Just lower the motor Kv.
@@mirrson Yes, of course, I know. The point was to caution Bardwell on blanket statements about what happens to current draw when voltage is changed.
Not sure how cold it was when u flew this but I find flying in the cold these batteries really take a hit on flight time. Any battery does as I’m sure u know :) I prefer the 1s versions of these. I was able to get 19mins of flight on a 1s lr build in the perfect condition. If the 2s can’t do more time then it’s not worth it in my opinion
Okay I'm gonna spill your coffe. Hate to break it to ya'll: Long range makes more sence on wings. You can FPV it too, its quiet and light. Most of all its efficient and flies for ever. Quad FPV is most fun racing and freestyle bashing in my opinion.
Exactly, this Eachine is a joke! And who ever thought 10 - 12 minutes was long flight time?! People that buy this will fly it probably less than 10 times before it self destructs! Eachine simply doesn't last. 😎🤘
Except wing is booooooring. ;)
Hi Josh, I bought the eachine lr3 2s because your video was cool and I want to fly this little "cruiser". After few test flights I think this quad is better with inav than the betaflight. Do you have experience and can help me to flash inav on this FC.
I've got recycled vape batts in micros that work and you can drain them way down.
Can you do a review of the Rekon 35?
Comment made & thumbs up button pressed, but it's not because I fell for the cute baby routine.
Yes they are heavier but the cut off rate is lower 2.5v and therefore flight time per weight they are actually lighter. but you need 4S minimum. At 6S you can fly agresívne and easily double the time of lipo
I have a home built NanoLR and a REKON3. They fulfill only one purpose, longer cruise duration for the overall weight than with LiPo. Note: I said overall weight. The frame weight compromises strength to service the heavy battery. I use mine at super low level when others are flying (mostly fixed wing) at my club and occupying the higher levels. They make a change from the aggressive freestyle quads, but they are not cheap, even home built, so very much a niche item. Anyone who started with the brushed 65's indoors will be at home! I REALLY don't see the purpose in this one though, its beyond the point where weight and performance don't match well enough. And yes, I CAN freestyle my two a bit early in a cells charge, and I have not broken anything after months of flying. However, CADDX Ant cameras are rubbish, period. Have rejected two Ant's now due arrival with dirt inside lens and lens locked by glue but out of focus. Also in my circle there's a far too high incidence of flight controller failures, mostly overheating. Good review, but the quad? Basically nothing to see here, pass on by.
Awesome!
Yesterday I accidently forgot about my lipo while tlying in cold weather, talking, flying. Suddenly on the way back my battery got really flat fast.. (was 100% my fault). Just before the drone dropped it was showing 1.5v. Was flying close by, no long range.. Battery survived, drone survived with no bent props or anything :p
Noticed you have multiple D6 pro now. Do you move away from parallel charging, and why? Simply because of ease of changing and not having to worry about matching voltage? I mean like you said, not everyone is a reviewer who just have multiple chargers lying around lol
It is apparent that LiPos are a huge barrier to entry. Especially how volatile they can be if neglected or misused. Maybe super capacitors (potentially) on Fpv drones is the next major innovation in our hobby? Super capacitors are still in their infancy stage, but as I understand Them they should be able to handle a high discharge.
The voltage discharge curve is the issue with supercaps, it drops off exponentially so if you want to use all of the stored energy you need to have some power electronics (eg. boost converter) to keep a steady output voltage for the quad.
I really only watched this video because I saw your TikTok before I was on TH-cam
These small props shit the bed, perhaps gemfan sl 5130 setup?
Dave_C LR frame gets 18 minutes on 2s 3000 Sony VTC6 cells with 4" bi-blade.
Dave C is working on a 3.5" 2S version.
Do a power loop
I feel like these batteries would be a much better option for a small wing. I also think I would be trying bi-blades and getting rid of all the weight I possibly could. GPS? That would be gone! Circular polarized antenna would get replaced with a small dipole… …and anything else I could do to reduce weight.
I would love to see a long range wing setup with just two battery bays to stick 18650s in. Launching would be worse/harder compared to a regular setup with LiPos, but with launch assist nowadays, that would be sweet.
That probably would give a long flighttime
Using a plane with these does work better. I found this guy flying for an hour! th-cam.com/video/UB8fas6zBSE/w-d-xo.html
Have you tested an capacitor? To make stable? Just newby asking 😂
Interesting. The original Recon is what got me interested in flying drones, and this is a nice development. Even if this one is not a great performer, more models using 18650 batteries will lead to further improvements. I really like the idea of using the same batteries for my dive lights, my transmitter, my 'copter and even my USB bank.
Tubular man 😎 🤙
There’s a new Rekon 3,5 coming with 2 18650 cells. Might fly better?
I think if the quad had a more powerful VTX for some long range then it would be more interesting with the given flight characteristics.
Is there any benefit if you don't care about the type of battery? Does this give you longer flight time compared ti LiPo?
I'm not interested in this one, but I am interested in the idea once it is better refined. A better camera could make it a good way to get footage on vacations
Adding series cells does not increase the current capability
Saying more power would have been correct.
Isn't there a side by side battery option also?
Yay new vid
Could you cover the Flywoo firefly 1s nano please Josh?
It's supposed to be pretty good for freestyle I hear.
Can you connect to the buzzer?
2s lion, use a 5.5 inchprop ....perfect cruiser with over 30 min flight time
My diatone Roma 4 lr weighs in at 237g with a 650 tattu 4s. Flight time is around 8-9 minutes. That's also running a Vista. Don't see the advantage.
You can get better performance with the Molicell p26a. Higher discharge and slightly better capacity. You might be able to mod it as well and use the p42a cells which are even better.
Edit: the p42a are 21700 which is why it would need modification.
21700 weighs around 70g, instead of 47g a 18650 does. how much weight do you want to add?
21700's are quite a lot heavier. Not a good trade-off when weight is already the problem. Perhaps building a drone using one 21700 would be interesting.
@@lazyhominid i think: no. ;-) you just increase the flight time a bit with the trade of loosing a lot of performance. it is what it is with small props under 4inch. always a pain, or trade off.
I have the Rekon 3. the VTX quits way before the battery would give up.
still fun, not a great flier, but different game.
been thinking of getting one of these 2s versions but I think 3.5" prop is more appropriate.
Rekon35 is what you're asking for, exactly. Flight time is underwhelming, imo
hello I'm looking for information but I can't find it, the fc model of this quad, I need to flash but I don't remember the name of the card model to install a new firmware... thanks
I couldn't link the drone to radiomastertx12. any tips?
18650 at 2,5 volt could damage them, also if you don't put the batteries in parallel there's no extra capacity or more amp draw.
Well, you don‘t get better „amp delivery“ for using two cells in series. You have more power for having doubled the voltage, and that‘s it
Maybe a single 21700 would be a good middle ground.
Hi Joshua Bardwell , first off thanks for all the awesome quadcopter content . Having recently got into drones in the last 4 months have found your uploads extremely helpful .
Can I ask a question and pardon me if I’ve missed something -
Does the OSD on your test flight show the individual cell voltage for one of the 2 cells or is it showing total voltage across the 2 cells ?
I really enjoyed this video by the way
Thanks again
Huuu saludos 🖖 al bebé 🤣🤩🤩🤩🤩🤩👍👍👍👍👍👍👍
Amp meter uncalibrated?
As someone mentioned this already: would be nice to try fly this thing on a regular 2s lipo. Might be a pretty good result because of much less weight and higher current delivery.
This model has 5A ESC'S, so not made for high current draw anyway
They do have 2s drones for this. Like savage bee or something or other makes one.. fpvcycle makes one. They are super light designed for freestyle
@@chrisbee5481 just put a cap on your battery plug
@@Y0n3z A capacitor will not restrict current flow, it only smooths it. 5a escs are a bit low for 2s regardless the cap you throw on it.
@@chrisbee5481 if you take it easy with the trottle upp 100%😍😁🤪
When are we gonna get quads that run off cordless drill batteries :P
Yes. I broke mine. 2S is too heavy. I prefer the single cell version. Solid video as always.
Rekon 3 broke easily and it light.
Have you seen the 18650’s that have a USB charging port in the end of them?
They are low capacity cells because their size includes the connector and charger circuit, so would be horrible for drones.
Perhaps I am misunderstanding you, but adding cells in series (03:22) does not improve the current delivery capability of the power source.
Correct, in parallel amps and capacity add up .
21700 P42A lion cells would be something worth checking out
Not on sub250. 4S 21700 7inch LR maybe. 21700 are too heavy and with three 18650 you can get the same results as two 21700. Same weight, less max current draw, but higher volt, leading to the same overall power
21700's are great for flashlights and transmitters, where volume matters more than mass. You get a lot more power using a little more space. But mass wise they're no appreciable gain over 18650's. They're comparable in power per weight ratio, and harder to get good deals on.
@@lazyhominid ah, assume they might be better because in the electric skateboard community they are taking over
it would be cool to have a 24hr race with these drones. See who can put in the most laps in 24hrs.
I don't know what you meant, but I just imagined that you are midair docking while flying another drone above on autopilot loops with an insane power bank and doing aerial recharging the same way the us air force does aerial refueling. To make it go 24 hours, heh.
3:17 how would 2 batteries in series give better current delivery? It's in series not parallel. The load isn't being split. Did you mean the lower kv motors pull less current?
It gives more power, not more current. So there is an advantage since the motors will pull half the amps.
anybody flashed INAV 7_1_0 magless nav?
why they dont use 21700 cells?
3:23 but but they are wired in series not parallel
Joshua, can't the cells be wired in series for a performance boost?
They are in series :-)
@@JoshuaBardwell oh ok. voltage drops lower than i thought it would.
THEY JUST MADE IT SOMETHING ! ( to sell )
i just ordered a Jumper T Pro and ( 2) " protected " 18650 batteries . While watching a video on the Skyzone Cobra x the reviewer stipulated to use " unprotected " 18650 , so what's the difference in the applications ..... i want to learn something :-)
They’re physically different sizes, but you’d use protected cells in something “dumb” like a flashlight that doesn’t have a voltage display so that you don’t damage the cells running them too low.
@@brandonbell359 Thank you for your reply ..... so many equipment videos simple say 18650 batteries. It would be helpful for newbies if it was specifically stipulated. " I Learned something today " Thanks Again !!!!
Does Eachine or Banggood sended this to you ?
Hello! Can you make a dump of config this nano lr3 please?
I can't. I don't have it any more.
@@JoshuaBardwell sad... Thank you!
I wonder if a design using a single center "bar", using 4 batteries as part of its structure, combined with a 4/5 inch high efficinty motor prop combo, for long range fpv cruising.
I see people running these batteries soon searching vintage rc car groups looking for cell matchers. Bringing back matched packs that rc car racing got rid of 17 years ago as lipo made that go buhbye.
Seems like it doesn't have a current sensor. And the call it long range 😂 👍🏼
Not sure why you insist that GPS rescue is not reliable with Betaflight. I fly mostly long range and did many tests and it works very well when it's configured correctly and it has at least 8 GPS lock. I test it almost on each session when it's safe to do so and I triggered it involuntarily often in the mountains. I did lose a quad when I was new to the hobby but I was only using 5 sats and it was probably why it failed.
Yes, it works sometimes. But then other times you lose your whole quad and there is no reliable warning that a sanity check will fail, or the quad just disarms and you're done. Or in one case I have seen, the quad flies the opposite direction from the home arrow.
Glad it is mostly working for you.
@@JoshuaBardwell I think it's easy to misconfigure unfortunately that's why it needs to be tested often. In one of my test it crashed because the battery was heavier than normal. However better not rely on it but I often do inadvertently when flying in the mountains.
What about that GPS not getting enough sats for the entire flight? There seems to be something wrong with that quad.
Honestly I didn't even think to call it out bc it's so common for GPS to be shitty on tiny quads, due to electrical interference.
@@JoshuaBardwell Then you could have stripped this video to 1 minute: "This is a long range quad but the GPS does not work on such quads anyways, ergo is is useless. Should you buy it: no. Remember to become a Patreon of mine. #shorts" :-)
You could also stack 18350s and get 4s on this quad
two 18350 would be about 70mm in length end to end whereas a single 18650 is 65mm, correct? I do wonder about maybe if the battery holder could be tweaked that 5mm and put two 18350 end to end to achieve a lighter 2s voltage at an lower mah capacity. Perhaps getting the weight closer to that of a 1s 18650 but yet have 2s voltage of two 18350 may be an interesting compromise to see how that performs.
@@jasongauruder5491 if you use button top 18350s it would go over spec but most high amp 18350s you see out of the vape industry are a little shorter and should manage to fit
I'm pretty sure I could throw a 4s li-ion on my 3" fly real slow high throttle and get more than 10mins. I need to try.
Nurk reviewed the Emax Babyhawk 2 HD with a 4 cell 18650 and flew semi aggressively for 22 minutes! I get 10 - 15 minutes out of an 1100 - 1500mah 4s lipo we all probably already own.
Then, I put on an 850mah 4s and RIP IT UP! Giving me the ADRENALINE RUSH FPV was designed to give us!!! 😎🤘
Best of both worlds and not a hokey concept quad that never should have been brought to retail. This Eachine will self destruct in no time! What's stopping that bottom 18650 from popping out every time you hit a branch or crash? Nothing! 🥴😟
@@KOrnhOliO1 I feel like it's a good try but max I ever seen is 15mins. My old cine pro 4k i turned to 3" I have timed at 11mins with 1350mah. My current 3" is a lil heavier with vista and alot higher pitch props but I'm with you pretty sure I can get 15mins with big enough battery and all have more performance.
I think I could design a long range 3" 30min quad. My 5" has done over 40mins and my 7" has done over 40mins
I don’t think the C rating of lithium Ion actually add up to more Amp delivery. for instance 2x30C lithium ion in series (2s) will still only be 30C also I thought in parallel 2x30C still = 30c total.
Higher voltage means less current needed as Watt = V x A (A = Watt/V). Yes, we have to account for the increase in weight… but still…
Double voltage can deliver double watts (power) at same amps (current).
In parallel you get the C sum. You can pull amps from both batteries at the same time. But in series, you get the C rating of one battery (and you should never serial connect two batteries of different C rating (nor parallel connect them, at that) since the way lies fires) though you get double the voltage.
Since the HUD clearly displayed the voltage from one battery, they are connected in parallel, meaning the voltage is no better than with one battery, though they will pump out a lot of current.
2 perfectly paired batteries in parallel will exactly half the current each one has to deliver for the same watts. If you take one of the 1x18650 quads and strap a second battery on there, each one has to deliver less current to reach the demanded watts, but the demand for current overall goes up because of the increased weight.
With batteries in series, each one has to deliver the full current. This current should be lower, because in theory, double the voltage means half the current for the same watts. Due to different efficiency of voltage regulators, motors with different KV and other real world factors, you won't half the current when going from 1s to 2s.
@@lazyhominid correct! In parallel we sum the current (voltage remains the same), in series we sum the voltage (current remains the same)
Why would anyone buy these things?
Nurk tested the Emax Babyhawk 2 HD and got over 22 minutes on 18650's! I can easily get the 10 - 12 minutes JB got on this barely cruising quad, by just using a standard 1100 - 1500mah 4s lipo we all probably own. AND, that's not just barely cruising either! But... And it's a huge BUT! I can use a 450 - 850mah 4s and do awesome freestyle flying or RIP OPEN THE SKY with fast racing / aggressive freestyle flying that's FUN AS HELL! Like we do with all " FUN" quads. 😎🤘
So, it does both slow cruising long range, and freestyle either mellow or aggressively and DOES THEM ALL WELL!
It's on the other end of the QUALITY spectrum, as it's high quality, using great parts VS. Eachine using the lowest end in parts and a hard plastic battery holder that'll be sure to break very easily. It'll also unload those batteries pretty easy as they just pop in, with nothing to make them stay in, making it virtually impossible to find your quad if and when you crash some distance away. 😳🙄 Yes, there's a good chance you'll lose this baby!
They also make the Emax in digital and analog. And, I have to comment that the video image quality of the Eachine was terrible! So, they used a crap camera besides using other crap quality parts, like they always do! You can get the opposite in image quality and get it crystal clear, by getting the DJI digital version of the Emax. The Emax will cost you way, Way less money after a year or two also, because those quality parts don't fail, burn out, or break nearly as often as the cheapest parts available that Eachine uses! You'll be repairing it often, I know, I've owned Eachine quads before.
You certainly get what you pay for with Eachine, that's for sure!!! 🥴😫🤷
I don't understand why they don't do this with 21700 cells .. they are much better and can actually handle the current. Even 1s would work. The Samsung 40t handles 30amps continuous
Rekon35 is much better choice to review, as Dave_C optimized motors and props for 2S.
I really like modular 18650 approach to standardize FPV hobby and make it more flexible (replace cells, no welding, use on your radio, goggles even flashlight...)
I hope we'll see safe 4S modular 18650 clips like Dave_C did earlier.
Maybe three 18350s would hit the spot, saving 25 grams.
Would they have saved weight by putting the batteries stacked on one side with an extra tall cradle instead of 2 cradles?
650mah on 3inch on 2S fly for 7-10mins with alot more performance. Could even get more on 3S lipos in this small toothpick style. The crux3 flys 5mins freestyle on a 450mah 2S easily. LiOn doesn't seem worth it at all in this class.
i get 20 mins on my 4s 18650 3 inch! flies like poo though
I would buy this in a heartbeat if sharkbyte ran on less than 7v. I cannot go back to Anal. If there were 18650s that were half the size vertically, you could slap 2 in each battery holder in series and I could run that thing in 720p. 10 minutes is more than enough flight time to sell me on an ultralight flyer that runs on cheaper batteries.
it's too good. I'll get it in 2 months, strap a small 2s lipo to my Tx5s.1 sharkbyte chip. That should work right Josh?
You mean if there were 18350's? ;)
They're not quite half the length, but you can easily build a drone like this which carries four such batteries instead.
Why not put four 18350 cells to get 4s , I’ve made an 87 gram pack with some 18350 1,000mah cells & got 15 mins with my 1306 3300kv motors and speedybee f7 mini 35A flytower . It’s not even an efficient rig