Bc its something new and exciting that he probably doesnt get to do these type of videos much anymore bc of all the new stuff out to review thats all kind of relatively same anyway..
As with anything in the hobby world, FPV is constantly evolving. I'm excited to see where this world of 8S will be in a year. I feel like it has a possible future. For me, when I chase drift cars or something like a jet ski, this could be helpful! That punch could be very helpful in a situation where you may have gone a little too wide on a turn or something like that!
Thanks for making videos like this. It'll be a very long time before I can build anything even close to this, but you've got a great way of showing off this awesome quad and going over all the details, while still having loads of fun.
I own 8s quad for about 2 years, but i use 2x4s lipo. 2507 motors 1500kv, and b-iblade apc 6x6 props., on mutch lighter build. Max speed is about 240km/h on gps.
@@tlj4999 Frame is falcon multurotors solleva build without those printed parts, esc is iflight 8s x80a single esc'a mountet verticaly od arm. And i menaged to fit there full air unit :)
This makes sense. As we increase the weight of our quads with more electronics/heavier cameras. We need more rpms/thrust for the pid controller to have full authority. As someone who flies 107, my 5" quad is just shy of 900G. Full air unit, GPS, RID, extra receiver, gopro full, and arm struts. It definitely flies heavy but for filming its pretty strong. I would love to have this setup with a 8s powertrain for bigger maneuvers for sure.
Love hearing that 8s and see the air performance of it. Coming out of the ground vehicles coming into the fpv drones, I have 2 ground vehicles and 1 boat that runs 8s. Typically we use 2 - 4s lipos in series to get to 8s. Market is kind if low for 8s batteries. I think mostly because there is much fewer chargers that can charge at 8s verses what's out on the market for 6s chargers. Because of that, I can see alot of folks resorting to running 2 - 4s lipos in series with this drone verses shelling out for a 8s batteries.
The fun thing with this hobby is how we go back to stuff because of better gear and parts. Like back to trying different celled lipos because the motors are better, or 3 blade because the drone got lighter ecc.
As a dilettante whose flight time is mostly on a 130mm wheelbase quad and who hasn't made the transition from line of sight to FPV yet, it's always reassuring to me when you clip a tree or have some other oopsie, and put it in a video. Notwithstanding your enormous contribution to multirotors generally (I still tell people to go and watch your long interview with Randy from SRA Solder) seeing someone with your experience and skill calmly accept that crashing is just fine and part of the game gives me the reassurance to keep repairing and flying. And maybe move to cheap FPV sometime soon. Thanks Joshua!
Bardwell is the Elvis of the FPV world but he won't die he's immortal Bardwell for president.. And I always learn a ton on this channel especially the part about kv and motor talk really opened my eyes to what I'm really dealing with much appreciated fellas
You should try an 8S 7" build. Using 2x 4S batteries would solve two problems: - Availability of 8S batteries - The regulator (Just connect the low voltage components to a single battery) I believe a higher voltage allows the magnetic field to change quicker, this applies to stepper motors used for CNC machines. in terms of reliability, it's worth noting that MOSFETs have quite a strict safe operating area in their datasheets so getting that peak current down is a very good thing.
I don't think it's a good idea. Drawing more power from one half of the battery than the other. My most recent build is a 9-in 8S and I'm using 2 4s. You won't know how much is left in each battery because your OSD only tells you the sum of both so you could possibly kill one half the battery without realizing it
@@TheDeltatangowhiskey It does make sense and you raise a fair point, although I'd counter that having a single battery is only a marginal improvement to the issue. Having a single battery ensures that the cells are all the same age, are (Usually) produced within the same batch and have the same usage pattern. When using two separate packs (Or 8x 1S packs for that matter), as long as the packs are in the same condition they should be close enough. You could always have the situation where one cell ages differently, for example where one cell is always close to the hot VTX. A better solution is to have individual cell monitoring. You could use the FrSky FLVS ADV which monitors 8 individual cells and can communicate via either the FBUS or S.Port, although I'm not sure if any FC supports this.
Just because of your great videos next week I'll finally make my dream of flying FPV will become a reality! Until now, it was more like a wish, and seems impossible to get the basics and find the right path in this huge world. Thanks to you it is no longer the case! I love the detailed explanation section of correlation between power, voltage, and performance on lower kvs! Ton of knowledge w/o making an ad of yourself for every piece of equipment that you present. Keep going!
I started about nine months ago. The learning curve is steep, at the beginning, but once you get going, it seems a lot easier. (hindsight is everything, I suppose) Welcome to the hobby, I love hearing people joining in on the fun.
Loved this video. Great to hear from Chris Rosser as well. 1500kv on 8s is equal to 2000 kv on 6S. Vanovers motor is 2021kv on 6S. It would be interesting to compare the two since the 6s build should be lighter and cheaper.
About 9 years ago, when I was like 15, I set out to test some stuff with some spare motors from a broken plane, I had a Rimfire 370 which is about the size of a 5 inch prop quad motor (28-26-1000KV), I wired it to a large 75A 8S ESC set out to test larger and larger props with different batteries. The motor was rated for 3S. At one point I put a 15 inch glow engine prop on it, which was brutally oversized. I tried with 2s (since it should spin slowly enough not to blow up) and the motor would just kind of stall and jitter at the start and barely spun up after that. Not yet bored of my contraption, I decided to try 5s. To my surprise, the motor spun up with barely any throttle input and pushed that thing to over 10K RPM with a 3 second punch, producing way more thrust that some larger motors I had. (lets not talk about the smell afterwards). It was at that moment that I realized that voltage not only controls the maximum RPM of a motor, but it clearly has a direct relation to the torque. In more real world scenarios, this could often mean that a higher voltage will simply give the motors a more wide torque band, even if the ESC is limiting the timing(?) in order to keep the power within limits.
HGLRC Zeus Pro 50A is an 8S ESC under $60 bucks. Foxeer Reaper F4 ESCs can also run on 8S, just a tad more expensive than the HGLRC one but still under 80$ which means you don't really have to spend a ton of money on an 8S ESC'. Don’t forget that an 8S 1300mAh pack is equivalent to a 6S 1800mAh pack which is also equivalent to a 4S 2600mAh pack. It’s not just the voltage, but the whole capacity of the pack is also bigger which will obviously increase flight time and be able to deliver more power which people might find “more efficient” but so many factors are being left behind and being ignored.
Crazy idea, we move back to the 4 individual escs that were mounted on the arms. First of all, when things explode, you have to pay to replace 1 esc instead of 4 each time. 2 when things explode the fire is not roasting your fc like a pot roast. (I had an esc spontaneously combust midair, which left char on the fc, vtx, battery, and burned through the battery strap.) and 3, it gives manufactures more room to put beefier components on the esc due to not crowding 4 together. Finally, you get extra room under your fc for voltage regulators, pdbs, and anything else your heart desires.
Higher voltage reduces the current and lower power loss so I would expect the MOSFETs to have less failures and run more efficiently. Keep in mind brushless DC motors are actually AC motors and the ESC outputs AC. They are functionally identical to 3 phase high voltage industrial motors that use a VFD (Variable Frequency Drive). The first step in a VFD is to rectify the AC to DC, then invert the DC to AC. The quad ESC does exactly the same thing except it starts with DC so it doesn't need the rectification step.
As seen in the example of the motors with the difficulty of winding the wire. You can not arbitrarily go up with the voltage. It goes but the hardware costs explode... So there is a sweet spot/optimum between hardware costs and voltage level... Due to modern manufacturing processes and mass production this can of course shift upwards... But even there the possibilities are exhausted at some point...
Is that the H743-Mini ? I just finished soldering up to an ESC. I have not plugged it into Betaflight or BL-Heli yet. Looking forward to it, but wondering if anyone has any reports on its performance yet?
There are flight controllers that allow 8S input so you wouldn't need a voltage regulator. Holybro Kakute H7 V2 for example. Rx, GPS and VTX would be powered off the FC BECs
I love this idea. Down the road build I can see. I just got into 2506 1850 5in 6s, and it just seemed to make all my 2207s null and void. Love the power, long flights, and no bottom feel. Pulls easily out of any power loop. Makes freestyle effortless. I think this is what 8s can do, and more.
I am about to begin my 5th quadcopter build. It's a 10" frame, and I was calculating for a 6S battery, because I'm used to thinking in 22-volts. But after watching this, I realize that I should be going with 8S for this one. It's going to be a payload platform, for cameras & servos & gimbal motors. 8S makes sense, 6S just seems like an oversight for this build. Glad I watched this video, before I started buying electronics for it.
@@hateforall4012 It's gonna be fun, for sure. I imagine it'll take me all winter, and most of early next season, to finish it. Heck, just building it is probably going to as much fun as flying it. This is where I'll let my creativity run free!
Amperage, that's why higher voltage is better. Wattage is measured by voltage times amperage. So the more voltage you have, the less amperage you need to make the same amount of power. That's why you can run more RPM on higher voltage, you're pulling less amperage to do the same amount of "work" or wattage in this case as you were on lower voltage letting you load the system harder to reach the same levels of load you would see on lower voltages. It's the same reason you likely have 110v and 220v running through your house. To keep the amperage at safe levels to produce more power for high current appliances such as clothes dryers, stoves and furnaces.
the difference between 8s and 6s on the ground with wheels is actually insane. its a whole other level, i could imagine drones would be the same, but would take a bit to work out the bugs and the motor brake. volt up gear down is the saying in our 4x4 world.
9 months later, Tattu has a 1050mah 8S 5.0 batterie now, GNB has a LiHv 1100mah. RCinpower has 2207 1600kv GTSv4. I've still not blown a Foxeer 8S FC or ESC with internal voltage reg. My AUW is 610g. Lowest D gain I've ever needed on a quad, which in turn means I can get away with less filtering.
I hope this becomes mainstream! I do have a 4-in-1 ESC that takes 8S and was not all that expensive, somewhere around 50$ (50 euros). I have not yet maidened the 7" quad that flies this, It'll take 2 x 4S in series (we all have a bunch of 4S laying around!).
I just watched Westpsyde build a DeWalt drone using a 5ah 20v ..10s battery. Im not affiliated or sponsored by any one hell i have learned everything from watching you on your channel, im trying to get into fpv; my question is does more cells more amperage= more power or is all this just for show?. I watched you an buddy fly an 8s now your 8s build. All while waiting on my first radio to try out the simulator so i can learn ...by the way thanks for all your videos on beginners fpv drones. Thanks to you i believe i now know enough to start an the type of drone to start with
You do an excellent job, explaining and demonstrating. I love the entire UA-cam FPV community. I know you’re all making a living at this, but you’re also providing so much education for everyone.
Coming from an electrical background, how I see the benefits of higher voltage is that with higher voltage and same power you'll have lower current. And it's current that usually burns stuff. So this of crouse means that with the same current you'll get more power. Higher voltages to bring some new issues, I already hate the zap 6S gives when connecting it.
XT90 anti spark connectors but in XT60 (not sure amass makes them in XT60 though) I use the XT90 anti sparks in all my cinelifters. Cheap and work great. (They have the green part on the outside of the yellow XT body that designates anti spark)
This brings up a problem that I have when I switched from 4S to 6S. I started getting glitches. Black box showed a motor doing a short term power at 0. So I changed the ESC and motor on that one. It still glitches and Black box shows first one motor and then another one doing the same thing. I've since changed the FC, the RX and added a capacitor. I tried it with a 4S battery and no problems other than it needed a lot more throttle as you would expect. I'm sorry for the long post, but I'm at a loss.
So... this looks promising but here are my thoughts: The ESC seems to handle the voltage without issues, the quad flies fine and it has a ton of power, but you are hovering at 20% throttle, so maybe lowering the Kv even more gives you more efficiency, more reliability and a more normal throttle feel? I mean, do not lower the Kv a lot, but something like 1100 or 1000 Kv may be okay?
Now you just need to add HDZero with the 90 fps camera so the latency isn't holding you back with all that speed. I realize it won't fit in that frame, but still. Faster quads need faster reactions in close quarters.
If you want to have an even more simple explanation to the whole high-voltage benefit equation for heating, wear and overall resistance..... look no further than you long distance power lines feeding your nearest city. There is a reason high voltage is better... disregarding the AC vs DC differences.
Looks like it flies like my 350 to 400g dry 5" 4s quads. I've got one run of racing quads that weight 265g dry, that are insane on 4s. At those weights 6s makes no sense to me. Maybe if I carried a GoPro and my quads were fat as all get out it would make sense. But 8s sure looks cool and also looks like somebody is going to be replacing ESCs like crazy. I have blown two since 2018. My 2 cents on 4s.
I have build an 8S 2400kv quad and yes the absolut anoyiong thing are the becs for all things in my quad but 8S escs are a Ton on market already, most at 20x20 size
Lol. It feels like a light weight racing drone, but it's not. It's 850 grams. ***hits tree and puts a 3 foot crater in the yard***
😂😂
😂😂😂
😂😂😂
😂😂😂
My drone with 8 motors is only 70 grams more
Loved the enthusiasm when you punched it and the collaboration with Rosser was really well done. Awesome video 🤟
We are so lucky Chris Rosser stumbled into the hobby. What an encyclopedia.
Also JB, of course 😘
I just want to say this is my favorite video in a while. It felt like old school Bardwell and I don't know how to explain it
Bc its something new and exciting that he probably doesnt get to do these type of videos much anymore bc of all the new stuff out to review thats all kind of relatively same anyway..
Yup
As with anything in the hobby world, FPV is constantly evolving. I'm excited to see where this world of 8S will be in a year. I feel like it has a possible future. For me, when I chase drift cars or something like a jet ski, this could be helpful! That punch could be very helpful in a situation where you may have gone a little too wide on a turn or something like that!
I really hope it takes off but it’s been a year…
I love to see colabs in the FPV community, this should be a more regular occurrence lol. Great content Bardwell. Cheers 🍻
Marius is going to come back and show everyone what 8s can do. 🔥
The DarkSide is gonna come back and 8S 3D on everyone 🤔
@@the_darkside_fpv that would be so rad!
dude that would be insane watching him do eject tricks on 8s
he’s the best !
Thanks for making videos like this. It'll be a very long time before I can build anything even close to this, but you've got a great way of showing off this awesome quad and going over all the details, while still having loads of fun.
Man Ive been a Bardwell fan for many years now but I must say that intro was more enthusiasm than Ive ever seen before. Good to see the excitement!
The sound of this quad at full throttle is amazing! Thanks JB!
Glad to see you found a use for the volador😄, it’s such a great frame when you can learn to ignore the weight
Excellent explanation from Chris! On paper it seems like there should be no difference but now I understand why in reality it's different.
Gr8! I never changed from 4 to 6s. now I'll simply connect them two 4s batteries and have 8s well done today!
I own 8s quad for about 2 years, but i use 2x4s lipo. 2507 motors 1500kv, and b-iblade apc 6x6 props., on mutch lighter build. Max speed is about 240km/h on gps.
I bet that sounds incredible!
Impressive! Which frame did you use?
@@tlj4999 Frame is falcon multurotors solleva build without those printed parts, esc is iflight 8s x80a single esc'a mountet verticaly od arm. And i menaged to fit there full air unit :)
This makes sense.
As we increase the weight of our quads with more electronics/heavier cameras. We need more rpms/thrust for the pid controller to have full authority.
As someone who flies 107, my 5" quad is just shy of 900G. Full air unit, GPS, RID, extra receiver, gopro full, and arm struts. It definitely flies heavy but for filming its pretty strong.
I would love to have this setup with a 8s powertrain for bigger maneuvers for sure.
last year build a 6s 2400kv motor 5 inch was amazing just like that :) the sound those make give goosebump each time
Yes! Unlimited power!
Love the energy of the video 🎉
Loved the collab with Chris!
Nice! Yes more Volts is less Amps so all the Connections and Boardlayout has to handle lower current more POWER! THX😎
Love hearing that 8s and see the air performance of it. Coming out of the ground vehicles coming into the fpv drones, I have 2 ground vehicles and 1 boat that runs 8s. Typically we use 2 - 4s lipos in series to get to 8s. Market is kind if low for 8s batteries. I think mostly because there is much fewer chargers that can charge at 8s verses what's out on the market for 6s chargers. Because of that, I can see alot of folks resorting to running 2 - 4s lipos in series with this drone verses shelling out for a 8s batteries.
The fun thing with this hobby is how we go back to stuff because of better gear and parts. Like back to trying different celled lipos because the motors are better, or 3 blade because the drone got lighter ecc.
As a dilettante whose flight time is mostly on a 130mm wheelbase quad and who hasn't made the transition from line of sight to FPV yet, it's always reassuring to me when you clip a tree or have some other oopsie, and put it in a video. Notwithstanding your enormous contribution to multirotors generally (I still tell people to go and watch your long interview with Randy from SRA Solder) seeing someone with your experience and skill calmly accept that crashing is just fine and part of the game gives me the reassurance to keep repairing and flying. And maybe move to cheap FPV sometime soon.
Thanks Joshua!
I fly a number of quads with motors that are 5s capable.
I run them on 6s at 5s kv. You get the best of all worlds.
Brilliant.
Bardwell is the Elvis of the FPV world but he won't die he's immortal Bardwell for president.. And I always learn a ton on this channel especially the part about kv and motor talk really opened my eyes to what I'm really dealing with much appreciated fellas
You should try an 8S 7" build.
Using 2x 4S batteries would solve two problems:
- Availability of 8S batteries
- The regulator (Just connect the low voltage components to a single battery)
I believe a higher voltage allows the magnetic field to change quicker, this applies to stepper motors used for CNC machines.
in terms of reliability, it's worth noting that MOSFETs have quite a strict safe operating area in their datasheets so getting that peak current down is a very good thing.
I don't think it's a good idea. Drawing more power from one half of the battery than the other. My most recent build is a 9-in 8S and I'm using 2 4s. You won't know how much is left in each battery because your OSD only tells you the sum of both so you could possibly kill one half the battery without realizing it
I hope that made sense lol
@@TheDeltatangowhiskey It does make sense and you raise a fair point, although I'd counter that having a single battery is only a marginal improvement to the issue.
Having a single battery ensures that the cells are all the same age, are (Usually) produced within the same batch and have the same usage pattern. When using two separate packs (Or 8x 1S packs for that matter), as long as the packs are in the same condition they should be close enough. You could always have the situation where one cell ages differently, for example where one cell is always close to the hot VTX.
A better solution is to have individual cell monitoring. You could use the FrSky FLVS ADV which monitors 8 individual cells and can communicate via either the FBUS or S.Port, although I'm not sure if any FC supports this.
I think it is a good idea!
Great video!
You’re so excited about this and I’m here for it
Just because of your great videos next week I'll finally make my dream of flying FPV will become a reality! Until now, it was more like a wish, and seems impossible to get the basics and find the right path in this huge world. Thanks to you it is no longer the case!
I love the detailed explanation section of correlation between power, voltage, and performance on lower kvs!
Ton of knowledge w/o making an ad of yourself for every piece of equipment that you present.
Keep going!
I started about nine months ago. The learning curve is steep, at the beginning, but once you get going, it seems a lot easier. (hindsight is everything, I suppose) Welcome to the hobby, I love hearing people joining in on the fun.
Congrats and happy flying. Wish you less broken parts than me 😂
Loved this video. Great to hear from Chris Rosser as well. 1500kv on 8s is equal to 2000 kv on 6S. Vanovers motor is 2021kv on 6S. It would be interesting to compare the two since the 6s build should be lighter and cheaper.
About 9 years ago, when I was like 15, I set out to test some stuff with some spare motors from a broken plane, I had a Rimfire 370 which is about the size of a 5 inch prop quad motor (28-26-1000KV), I wired it to a large 75A 8S ESC set out to test larger and larger props with different batteries. The motor was rated for 3S. At one point I put a 15 inch glow engine prop on it, which was brutally oversized. I tried with 2s (since it should spin slowly enough not to blow up) and the motor would just kind of stall and jitter at the start and barely spun up after that.
Not yet bored of my contraption, I decided to try 5s. To my surprise, the motor spun up with barely any throttle input and pushed that thing to over 10K RPM with a 3 second punch, producing way more thrust that some larger motors I had. (lets not talk about the smell afterwards).
It was at that moment that I realized that voltage not only controls the maximum RPM of a motor, but it clearly has a direct relation to the torque.
In more real world scenarios, this could often mean that a higher voltage will simply give the motors a more wide torque band, even if the ESC is limiting the timing(?) in order to keep the power within limits.
HGLRC Zeus Pro 50A is an 8S ESC under $60 bucks. Foxeer Reaper F4 ESCs can also run on 8S, just a tad more expensive than the HGLRC one but still under 80$ which means you don't really have to spend a ton of money on an 8S ESC'.
Don’t forget that an 8S 1300mAh pack is equivalent to a 6S 1800mAh pack which is also equivalent to a 4S 2600mAh pack. It’s not just the voltage, but the whole capacity of the pack is also bigger which will obviously increase flight time and be able to deliver more power which people might find “more efficient” but so many factors are being left behind and being ignored.
EDF jet style fixed wings love the 8s
I feel this may be the next thing! be ready to see manufacturers making 8S ESC's.
Crazy idea, we move back to the 4 individual escs that were mounted on the arms. First of all, when things explode, you have to pay to replace 1 esc instead of 4 each time. 2 when things explode the fire is not roasting your fc like a pot roast. (I had an esc spontaneously combust midair, which left char on the fc, vtx, battery, and burned through the battery strap.) and 3, it gives manufactures more room to put beefier components on the esc due to not crowding 4 together. Finally, you get extra room under your fc for voltage regulators, pdbs, and anything else your heart desires.
i had no idea 4-in-1 esc’s were so popular now. individual escs on each arm is absolutely the way to go imo.
@@Luka-lm1prare there 8s escs at all
That was badass!!
We will definitely see more ESC's more motors and more lipos ready for 8s Now that JB has made this video. Thank you, JB.😁🙌
I love the volador vx5. I recently put the speedybee f7 v3 stack with a blheli esc.
Great Flow bro
Higher voltage reduces the current and lower power loss so I would expect the MOSFETs to have less failures and run more efficiently. Keep in mind brushless DC motors are actually AC motors and the ESC outputs AC. They are functionally identical to 3 phase high voltage industrial motors that use a VFD (Variable Frequency Drive). The first step in a VFD is to rectify the AC to DC, then invert the DC to AC. The quad ESC does exactly the same thing except it starts with DC so it doesn't need the rectification step.
Sic vid my dude, that thing ripsand who knows we may be headed it the 8s direction. The white unicorn in the background is dope!! 🦄
I'm currently investing in 10s
As seen in the example of the motors with the difficulty of winding the wire. You can not arbitrarily go up with the voltage. It goes but the hardware costs explode... So there is a sweet spot/optimum between hardware costs and voltage level... Due to modern manufacturing processes and mass production this can of course shift upwards... But even there the possibilities are exhausted at some point...
Foxeer has an 8S flight controller that also has 2 BECs for 5V and 10V. So technically you can throw the external BEC out
Is that the H743-Mini ? I just finished soldering up to an ESC. I have not plugged it into Betaflight or BL-Heli yet. Looking forward to it, but wondering if anyone has any reports on its performance yet?
@@Inertia888 No that's a Matek FC but, it is also rated for 8s with a 5V and 8V bec and Matek has always been top quality for me.
@@Inertia888 Foxeer has 3 8S rated FCs: the H7 Mini MPU6000, H7 MPU6000 and the F722 V4 MPU6000.
nice PBJ props Budwell
Thanks for this video! May your crashes be soft.
There are flight controllers that allow 8S input so you wouldn't need a voltage regulator. Holybro Kakute H7 V2 for example. Rx, GPS and VTX would be powered off the FC BECs
Nice!
I love this idea. Down the road build I can see.
I just got into 2506 1850 5in 6s, and it just seemed to make all my 2207s null and void. Love the power, long flights, and no bottom feel. Pulls easily out of any power loop. Makes freestyle effortless.
I think this is what 8s can do, and more.
Foxeer 8s stack has built in regulator, you don't need to add an extra one, so the build could be exactly the same as a 6s one.
That'd be pretty smart. I considered the Foxeer, but T-Motor was quicker to send the gear. Foxeer Reaper are very good ESC.
Nice unicorn
I'm gonna build it 12 cell now. Gotta stay ahead of the curve
I am about to begin my 5th quadcopter build. It's a 10" frame, and I was calculating for a 6S battery, because I'm used to thinking in 22-volts. But after watching this, I realize that I should be going with 8S for this one. It's going to be a payload platform, for cameras & servos & gimbal motors. 8S makes sense, 6S just seems like an oversight for this build. Glad I watched this video, before I started buying electronics for it.
You spelled 12s wrong! Lmao…. Seriously though your build sounds fun!
@@hateforall4012 It's gonna be fun, for sure. I imagine it'll take me all winter, and most of early next season, to finish it. Heck, just building it is probably going to as much fun as flying it. This is where I'll let my creativity run free!
Wow... Rosser really knows he stuff.
Kv is the theoretical max RPM per Volt - it's constant for a motor whatever the voltage is.
It is about lower amp draw at higher voltage.
The power to weight ratio is insane
More Voltage gives you better stick response.❤
Amperage, that's why higher voltage is better. Wattage is measured by voltage times amperage. So the more voltage you have, the less amperage you need to make the same amount of power. That's why you can run more RPM on higher voltage, you're pulling less amperage to do the same amount of "work" or wattage in this case as you were on lower voltage letting you load the system harder to reach the same levels of load you would see on lower voltages. It's the same reason you likely have 110v and 220v running through your house. To keep the amperage at safe levels to produce more power for high current appliances such as clothes dryers, stoves and furnaces.
the difference between 8s and 6s on the ground with wheels is actually insane. its a whole other level, i could imagine drones would be the same, but would take a bit to work out the bugs and the motor brake. volt up gear down is the saying in our 4x4 world.
That is so cool. Foxeer has 8S flight controllers and esc. 😎
You know the video is going to be a banger when bardwell is excited
Ok you sold me at so much power.
9 months later, Tattu has a 1050mah 8S 5.0 batterie now, GNB has a LiHv 1100mah. RCinpower has 2207 1600kv GTSv4. I've still not blown a Foxeer 8S FC or ESC with internal voltage reg. My AUW is 610g. Lowest D gain I've ever needed on a quad, which in turn means I can get away with less filtering.
Even the unicorn at 8:11 into video had to sit down lol, Big Thumbs up
Higher kv motor manufacturing: you could use 3 stranded wires to make less turns with more width.
0:26 , and this.. is to go one step beyond.. NRRRAAAAAAAHHHH!!!!
awesome
I feel some new Quadmovr insanity coming up
Coming up, next year .... 10s is here, you have to try this :D
OK I've waited long enough, time to build a 8s quad now
I hope this becomes mainstream! I do have a 4-in-1 ESC that takes 8S and was not all that expensive, somewhere around 50$ (50 euros). I have not yet maidened the 7" quad that flies this, It'll take 2 x 4S in series (we all have a bunch of 4S laying around!).
I’m still a newbie and thought 4s is right for me, now I’m thinking o should get a 6s drone. Mind you I’m just buying prebuilt and only DJI internals.
I now have to try 8s. Was just about to build a Crafted Kwads Freshman, and now suddenly, I want to rethink everything.
Awesome! I need one, or two 😆
Dude my mad respect for your physique change. Looks great!
When i started fpv 3s to 4s was the big leap💀😭 time flies
I just watched Westpsyde build a DeWalt drone using a 5ah 20v ..10s battery. Im not affiliated or sponsored by any one hell i have learned everything from watching you on your channel, im trying to get into fpv; my question is does more cells more amperage= more power or is all this just for show?. I watched you an buddy fly an 8s now your 8s build. All while waiting on my first radio to try out the simulator so i can learn ...by the way thanks for all your videos on beginners fpv drones. Thanks to you i believe i now know enough to start an the type of drone to start with
Man, I want that shirt!
I want one.
This reminds me when I use to run 48v through 12v hydro pumps.
You do an excellent job, explaining and demonstrating. I love the entire UA-cam FPV community. I know you’re all making a living at this, but you’re also providing so much education for everyone.
Coming from an electrical background, how I see the benefits of higher voltage is that with higher voltage and same power you'll have lower current. And it's current that usually burns stuff. So this of crouse means that with the same current you'll get more power. Higher voltages to bring some new issues, I already hate the zap 6S gives when connecting it.
Antispark connectors aren’t difficult to find.
@@barthchris1 Those would definitely be recommended for 8S
XT90 anti spark connectors but in XT60 (not sure amass makes them in XT60 though) I use the XT90 anti sparks in all my cinelifters. Cheap and work great. (They have the green part on the outside of the yellow XT body that designates anti spark)
When talking 8s you have to do an 8s powered intro. My man 🤜🏾🤛
you are like vsause. smart, funny, and mildly insane
This brings up a problem that I have when I switched from 4S to 6S. I started getting glitches. Black box showed a motor doing a short term power at 0. So I changed the ESC and motor on that one. It still glitches and Black box shows first one motor and then another one doing the same thing. I've since changed the FC, the RX and added a capacitor. I tried it with a 4S battery and no problems other than it needed a lot more throttle as you would expect. I'm sorry for the long post, but I'm at a loss.
Dude, you have lost so much weight this past year. Good on you man, you look great
Josh: "I will explain the benefits of success"
everybody: Yes, go on!
"Normies like me" (being modest)
I have some race motors by lumenier and chief that are 2050kv 6s they go HAM
No replacement for displacement. More S's more power. But a heavier build will mean more breakage
So... this looks promising but here are my thoughts: The ESC seems to handle the voltage without issues, the quad flies fine and it has a ton of power, but you are hovering at 20% throttle, so maybe lowering the Kv even more gives you more efficiency, more reliability and a more normal throttle feel? I mean, do not lower the Kv a lot, but something like 1100 or 1000 Kv may be okay?
I run 6s on 2400kv without motor limiting and I don't get hot motors either. Huge power but I don't usually fly too aggressively.
Now you just need to add HDZero with the 90 fps camera so the latency isn't holding you back with all that speed.
I realize it won't fit in that frame, but still. Faster quads need faster reactions in close quarters.
4S enjoyer checking in. I like to know when my battery is getting low instead of detroying my pack every flight. and 8s would only be worse.
I mean it will be more expensive but a gold blend or thinner gold wire less resistance.
If you want to have an even more simple explanation to the whole high-voltage benefit equation for heating, wear and overall resistance..... look no further than you long distance power lines feeding your nearest city. There is a reason high voltage is better... disregarding the AC vs DC differences.
OHHHLALALAAA my dream
Looks like it flies like my 350 to 400g dry 5" 4s quads. I've got one run of racing quads that weight 265g dry, that are insane on 4s. At those weights 6s makes no sense to me. Maybe if I carried a GoPro and my quads were fat as all get out it would make sense. But 8s sure looks cool and also looks like somebody is going to be replacing ESCs like crazy. I have blown two since 2018. My 2 cents on 4s.
I have build an 8S 2400kv quad and yes the absolut anoyiong thing are the becs for all things in my quad but 8S escs are a Ton on market already, most at 20x20 size
I still have 4S everything, because it's few years since I bought it and it was cheaper. It is better to fly on 4S then not to fly at all :D