@@themacbookgamer a spinning mass resists rotation in its other axis, which the plane was trying to roll and pitch. Im not sure im using the correct words but from what i understand it has to change how the plane would fly.
Fun fact, lawn mower blades are designed to pull air upwards into the mower. The idea is that it stands the grass up for a better cut. If you flipped the blade over, would it create a noticeable amount of lift? It would probably be a little worse at cutting grass, but it'd be interesting. Maybe you could try 3D printing your own blade to reduce some weight too.
Flipping the blade wouldn't do anything as it'll have the same twist direction, However with another blade that acted as a pusher it'd disturb the center of lift.... probably, still worth a try, Call it the "F35 F".
The challenge here sounds like a mid air landing strip challenge. Not only must 2 vehicles make contact without crashing, but one of them needs to have the thrust to carry itself and the second aircraft.
If you can handle the weight, making pigs fly is easy, the challenge is how do you do it in a way that doesn't look like cheating. Afterall, cattle are often transported by air travel.
Crazy how far RC and technology in general has come... You can chase a flying lawn mover with a FPV drone. Even 15 years ago this would have been magic.
The channel 'Hand Tool Rescue' has a great restoration video of a Flymo that ends in a light demo of it. ua-cam.com/video/zGM6Dh3V-FM/v-deo.htmlsi=mxBgnMn0IxqcO37T
The whole time it was flying with the mower blade running I was expecting a drone or something else to accidentally fly into the blade, so maybe build some sacrificial planes and do that?
Your neighbor is smart. Mowing when it is hot outside is hell. If you don't mind mowing in the day, maybe offer to do it for them for cheap so you can sleep in? or just learn to sleep through the small amount of extra noise.
A weed whacker / eater powered by it's own drivetrain is the next thing to do to complete the lawncare trinity. Bonus points if you don't change the angled cutter head.
One of the bug bears of our club is keeping the strip mowed and no one like doing it as it interferes with their flying time, but with the flying lawnmower you can fly do touch and goes and mow the strip at the same time, problems solved, brilliant solution.
Gotta admit I rewound a dozen times to check whether he was using engine, or electric via an engine driven generator, or straight battery. I call foul and demand a reengineering using mechanical or electromechanical subsystem. 🤷♂️
I’ve been doing UA-cam since 2009. I think this is the first time I can recall laughing out loud just reading the title in my notifications. 😂 You a strange one Peter Stripol, never change.
The cutout in the leading edge of the wing centre section is creating significant drag, and also disrupting airflow over the tail boom (reduced elevator authority). Try putting a simple fairing over the cutout to match the rest of the wing leading edge. Apart from reducing drag, it will result in cleaner laminar airflow over the wing. Have fun, and thanks for your content.
Now that you've made a Lawn-Cutting Flying Lawn Mower, here's an idea: How about a Lawn Mower that flies similar to how a Gyrocotper flies. Swap the Lawn Mower blade with a downward-facing prop for lift. Probably will change where the center of the wing ends up, but could also shrink the need for wing length. Just an idea. good job, here, bud!
@petersripol - I challenge you to make a helicopter like device that can safely lower a 180lb human from a skyscraper that's on fire. The device can also employ inflatable wings or a parachute to aid in increased drag. The idea is to have a backpack like device that a person can use to descend from lower heights where a parachute wouldn't be ideal but could also be used from taller heights too.
Just add a mullet and a speaker so when it crashes into Pewdie Pie's lawn in says in a thick country accent to them, "Hey boy Ima here ta mow yer lawn!"
This was so much fun! I think the next iteration should be using the guys of the mower to make a performant aircraft! And then a flying toilet, the real deal, porcelain, no cheapy plastic camping units!
I feel as though the failure at 12 minutes was due to the rotation of the lawn blade. That kind of heavy object rotating at the center of gravity of a plane is bound to have some effect. Similar to a helicopter tail rotor. Or the ground resonance from a helicopter blade. They affect the gravity of the vehicle. Notice it is listing to the left before the blades stared. Then lists to the right when it is running, then stalls when he turns left (w blade running) There is a lot of inertia from the blade taking part in the flight logistics. Fun video. ❤
Golden Wings RC model airplane club Belgium Bruges Damme had a flying lawnmower beginning of the 80’s. It was presented on airshows. We also had a flying iron, a whitch, some flying saucers, X-planes like in Steven Spielberg’s movies, a whole team of WW2 planes and some people who knew to turn this in a magnificent show with an exploding oil refinery. Sure, we had fun! I love your channel! Brings back memories! 😂
This gives me some ideas to help my little brother. He has a full service tree trimming business that requires him to often go 40 or 50 feet up into a tree in order to trim it back to prevent damage to buildings the tree is near, keep individual trees from getting their limbs intertwined with other trees, remove grapevines to prevent trees from being damaged, or sometimes the property owner just wants limbs/branches trimmed back for aesthetic reasons. Unfortunately my brother has a terrible fear of heights that he wasn't really aware of until after his father in law loaned him the money to start the business and some working capital. He is a very good pilot for fixed and rotary wing RC aircraft though and since we are both good at fabrication I think we can create a whole line of tree trimming equipment, chainsaws, reciprocating trimmers, rotary blade trimmers, etc... that mean he'll never have to climb a tree again and he'll still get to show his father in law he can run a successful business and pay back his loan. It really should be easy to do, our fabrication skills are so good I was able to fabricate this entire story while eating lunch in only 6 minutes.
I remember around 10 years ago BuddyRC helping me with programming a racing quadcopter I bought from them at the Toledo hobby show. They were super helpful!
This is kind-of a dream for anyone with a lawn mowing business. You just need to attach an FPV camera and you can cut your customers' grass from home. It's fly-in fly-out lawn mowing!
This is now the most efficient way to cut grass. I love how you took this seriously, this is definitely one of the best videos on youtube 😂 You did awesome on this project for sure 💯
NEXT MUST DO! Construct a oversized radio transmitter that flies like any fixed wing aircraft but is controlled by holding a standard sized (40) RC airplane. One requirement would be that the pair can also be controlled/flown in the normal configuration, except your controller is the size of a .40 ARF. So in summary I'd like to see if you can "Fly a Radio Transmitter by holding a RC plane and manipulating its control surfaces somehow then land and swap places by flying the Plane this time by using the oversized transmitter that just landed. Fly plane with transmitter as we all would, fly the pattern, land now do the same but fly the transmitter with the plane...
If you look closely, you can see the gyroscopic precession of the running land mower, every time he wants to go up, the plane tilts in the direction of the spinning blade. My suggested solution? Two land mowers and use the mother output of the land mowers to power the plane. DC moters feels like a cheat here
I have 2 suggestions. 1) Crash something else into the spinning blades as it's flying. 2) Convert the mower blades into downwards thrust and experiment with it.
Nice iterating up to the rudders. It really helped to demonstrate the difference between differential thrust for control and having rudders. Thanks for sharing this with us. :)
man, i remember WAY back, the sketch where they pretended they had to trim a spot on the grass runway, only to "trip and fall" as the "lawnmower" went flying away... ☺
it'd be neat if you could somehow rig the lawnmower blade to run as a propellor, but that'd probably require a lot of complex dissassembly and rebuilding the entire lawnmower and not even give very much thrust
Okay, this is terrifying but amazing build. Also, with a high RPM heavy cutting blades spinning I'm sure with it on you have more stability but you'll probably have a little torque to the left. It'd be interesting to see what happens with a mower that has a counter rotating blade system. Unfortunately I don't think they make a dual blade counter rotating mower that's light enough to do this with!
the world's least efficient automatic lawnmower: slapping some giant propellors on it and putting it on an automated flight course positives: cool, funny looking negatives: you have now strapped unguarded lawnmower blades to the front of your lawnmower
After seeing this.. now I need a "lawnmower helicopter drone!" Maybe make drone blades cut? And dream request: The jet/ plane/ glider from Nausicaa (pilot NOT required)
All the other UA-camrs rebuilding stuff from games and movies, while Peter invents stuff that should be in games and movies! (Edit: NOW I know where mysterious corn circles are coming from)
I HATE That UA-cam Didn't Recommend me this. I have watched EVERY Video on this channel related to making (object)'s Fly. I Love that I Remembered your name when I saw Williams New Vid :DDD
I had the original FlyingThingz lawn mower kit. They also had race cars, tanks and a witch. Their planes really flew like complete crap even for the 1990’s standards. They were nitro obviously but it was a combination of weight and coroplast material that made them unstable. They weren’t easy to build either. Their center structure was over engineered and heavy laser cut plywood.
good, LORD that thing is a lead sled! It got airborne only on a wing and a prayer. BUT handled okay once you got it up there. The third motor was a nice idea.
A flying hedge trimmer? Man, where was that when I needed it! Really though, hedge trimmer drone sounds kind of useful. Insanely hard to engineer (perhaps even impossible), but quite useful.
Did having the blade running induce some yaw?
No noticeable effects!
As long as it's not accelerating or decelerating while in flight it shouldn't affect yaw
@@themacbookgamer should result in some pitch/roll coupling like any spinning mass in the yaw plane would.
@@themacbookgamer a spinning mass resists rotation in its other axis, which the plane was trying to roll and pitch. Im not sure im using the correct words but from what i understand it has to change how the plane would fly.
I imagine it affected pitch more.
Fun fact, lawn mower blades are designed to pull air upwards into the mower. The idea is that it stands the grass up for a better cut. If you flipped the blade over, would it create a noticeable amount of lift? It would probably be a little worse at cutting grass, but it'd be interesting. Maybe you could try 3D printing your own blade to reduce some weight too.
Flipping the blade wouldn't do anything as it'll have the same twist direction, However with another blade that acted as a pusher it'd disturb the center of lift.... probably, still worth a try, Call it the "F35 F".
It would spin the same way, also you would have to put a hole in the top of the mower so air can be pulled through
That’s what I thought!
the effect is negligible as there is no vacuum against the ground
Then, it wouldn't be a LAWNMOWER then huh, since it wouldn't effectively cut the grass
How about a flying patch of grass, that can be mowed in midair by the flying lawnmower? 🤔
I like your way of thinking, Mister Tourneaux 🌈
i like this
Issue: once the lawnmower lands of the patch of grass, it will cause weight, and that will probably kick it out of the air and make it crash.
The challenge here sounds like a mid air landing strip challenge. Not only must 2 vehicles make contact without crashing, but one of them needs to have the thrust to carry itself and the second aircraft.
@@bungeetoons multicopter for the flying landing strip should be good
Take 4 lawnmowers, swap the blades for propellers and strap them together to make a terrifying quadcopter. Do some high octane hedge trimming.
Fans: Create an update for the fishing boat or make lawnmowers fly
Peter:
Lets get him to make pigs fly next. Think of all the things that would lead to. So much has been waiting for 'when pigs fly'
@@IFRYRCE Flite Test already did this. Would be cool if Peter put his twist on it too. ua-cam.com/video/720HKxvyTEg/v-deo.htmlsi=ar_hLC5BsANWQjDf
@@IFRYRCE the bad piggies reference 😭😭
If you can handle the weight, making pigs fly is easy, the challenge is how do you do it in a way that doesn't look like cheating. Afterall, cattle are often transported by air travel.
@@bungeetoonscannon?
A prefect case study on how to make something already dangerous even more dangerous. Truly impressive.
I liked the little Touch-and-Mow landing
i was thinking cut and go but yours is way better LOL
This technology isn't grounbreaking.
It's groundskeeping.
Finally I can cut my high weed
In the clouds
Good for trimming those hard-to-reach hedges.
...while high...in altitude, I mean...yeah, that's it...
"it's over aniken, I have the highweed"
Aniken: (insert flying lawnmower)
High weed is the easiest to cut, cause it just stands there. Sober weed ducks under the blades too fast.
That was a clean touch and mow
This comment
"Taking lawn care to new heights" is just too perfect.
That’s the new slogan that will sell this thing to millions.
Crazy how far RC and technology in general has come... You can chase a flying lawn mover with a FPV drone. Even 15 years ago this would have been magic.
There *WAS* a device back in the 60s or 70s called a "Flymo." It cut the lawn, but had no wheels! It ran in ground effect.
Thanks, Peter!!
That’s cool
The channel 'Hand Tool Rescue' has a great restoration video of a Flymo that ends in a light demo of it.
ua-cam.com/video/zGM6Dh3V-FM/v-deo.htmlsi=mxBgnMn0IxqcO37T
My dad had one I liked it. it was easy to push around sucked on slopes
There are many hovercraft lawnmowers
Stillngetvtgem to this day
I think part of the control issues is the gyroscopic precession from the lawnmower blade, This is giving you a weird pitch/roll coupling
Smart chicks are hot!
@@rb032682don’t be weird
@@rb032682💀💀💀💀
With the lawnmower on, it’s like a flying guillotine. It could “take a little off the top.” 😁
Hey! Nice 'AIRcut! 😉😁
send it towards elon musk 😂
Fly it really low over Mar a lago
mass hair cut or sell to the french ?
@@SilverScarletSpider how dare he uncensor conservatives
The whole time it was flying with the mower blade running I was expecting a drone or something else to accidentally fly into the blade, so maybe build some sacrificial planes and do that?
Dude me too
I was gonna say this would be so cool to see in aerial combat, just lowering onto something else and pulverizing it.
Ok you beat me to it, I just commented the same thing and then went reading comments. 🙂
Take it to the next flitefest demolition derby.
I thought of one use - prank-mowing mystery messages in a meadow, like crop circles.
I think you could actually make someone lose their mind like that.
"Honey wake up, theres a buzzing in the fields"
"There's only one way to find out though". This is the way, full send!
my neighbor at 8am on a weekend
Your neighbor is smart. Mowing when it is hot outside is hell. If you don't mind mowing in the day, maybe offer to do it for them for cheap so you can sleep in? or just learn to sleep through the small amount of extra noise.
@@zebraloverbridget my comment was for comedic purposes only in no way do i find this to be a real problem👍
@@zebraloverbridget woooooosh
A weed whacker / eater powered by it's own drivetrain is the next thing to do to complete the lawncare trinity. Bonus points if you don't change the angled cutter head.
drop a like if you remember the original flying lawnmower video on youtube back in like 2006-2007 or so
Only true OGs remember that video 🤝
The glory days.
That shit was Crack in the old days 🎉
I'm so very sorry I missed that! 🤣
Not only to I remember the video, I remember when FlyingThingZ came out with the lawnmower kit.
I feel like this would be a little overpowered at the FliteFest demo derby
Peter never fails to make death traps
One of the bug bears of our club is keeping the strip mowed and no one like doing it as it interferes with their flying time, but with the flying lawnmower you can fly do touch and goes and mow the strip at the same time, problems solved, brilliant solution.
Turn the props with the lawnmower engine!
Gotta admit I rewound a dozen times to check whether he was using engine, or electric via an engine driven generator, or straight battery. I call foul and demand a reengineering using mechanical or electromechanical subsystem. 🤷♂️
I’ve been doing UA-cam since 2009. I think this is the first time I can recall laughing out loud just reading the title in my notifications. 😂 You a strange one Peter Stripol, never change.
Dude, I love your videos and your vibes! You inspired me to buy an RC airplane and now it’s my hobby! Thanks for your content! 😀
I really missed those old good days when you build real Airplanes, wish we could get more of that type of content, Love you bro
11:00 Nice touch & mow there
The cutout in the leading edge of the wing centre section is creating significant drag, and also disrupting airflow over the tail boom (reduced elevator authority). Try putting a simple fairing over the cutout to match the rest of the wing leading edge. Apart from reducing drag, it will result in cleaner laminar airflow over the wing. Have fun, and thanks for your content.
5:42 can't help myself to think that a zedvancement there hahaha
Now that you've made a Lawn-Cutting Flying Lawn Mower, here's an idea:
How about a Lawn Mower that flies similar to how a Gyrocotper flies. Swap the Lawn Mower blade with a downward-facing prop for lift. Probably will change where the center of the wing ends up, but could also shrink the need for wing length.
Just an idea. good job, here, bud!
Seriously, it needs to be a ride on lawnmower!
And Peter has to ride on it AND remote control it.
Peter is constructing a Mythbusters team
This might actually be the scariest thing you've ever built. Which is impressive.
@petersripol - I challenge you to make a helicopter like device that can safely lower a 180lb human from a skyscraper that's on fire. The device can also employ inflatable wings or a parachute to aid in increased drag. The idea is to have a backpack like device that a person can use to descend from lower heights where a parachute wouldn't be ideal but could also be used from taller heights too.
Okay, this is pretty cool... now do a flying riding lawn mower.
Perfect for mowing those remote spots in the yard!
The question isn't "Can lawnmowers fly?" The question is "What can't Peter make fly?"
Fax
@@k4rz3n a flying fax machine would be amusing
@@jeremymcadam7400 😂
You know it's a good day When PeterSripol uploads👍
Would it work as helecoptor lawnmower
I remember subscribing when you were leaving flight test. Crazy how your channel is bigger than theirs now.
Just add a mullet and a speaker so when it crashes into Pewdie Pie's lawn in says in a thick country accent to them, "Hey boy Ima here ta mow yer lawn!"
This was so much fun! I think the next iteration should be using the guys of the mower to make a performant aircraft!
And then a flying toilet, the real deal, porcelain, no cheapy plastic camping units!
touch and go ❌ touch and mow ✅
I feel as though the failure at 12 minutes was due to the rotation of the lawn blade. That kind of heavy object rotating at the center of gravity of a plane is bound to have some effect. Similar to a helicopter tail rotor. Or the ground resonance from a helicopter blade. They affect the gravity of the vehicle. Notice it is listing to the left before the blades stared. Then lists to the right when it is running, then stalls when he turns left (w blade running) There is a lot of inertia from the blade taking part in the flight logistics.
Fun video. ❤
Most pilots would say altitude is your friend, on takeoff try to gain as much height as possible. It allows room to glide or recover
Golden Wings RC model airplane club Belgium Bruges Damme had a flying lawnmower beginning of the 80’s. It was presented on airshows. We also had a flying iron, a whitch, some flying saucers, X-planes like in Steven Spielberg’s movies, a whole team of WW2 planes and some people who knew to turn this in a magnificent show with an exploding oil refinery. Sure, we had fun! I love your channel! Brings back memories! 😂
Plants vs Zombies lawn mowers be like:
The ad was brilliant, Peter showed how to use that part of Odoo seamlessly.
Here is an idea: put a a GPS in it, and provide a lawn mowing service, run from a home office💪
What is next? Are you going to fly a real witch on a broom? That was fun, great video.
Cut open the top of the deck, replace the blade with a huge prop and make it VTOL.
you should make a human sized hovercraft,i would really enjoy whatching the episodes or videos. :)
This gives me some ideas to help my little brother. He has a full service tree trimming business that requires him to often go 40 or 50 feet up into a tree in order to trim it back to prevent damage to buildings the tree is near, keep individual trees from getting their limbs intertwined with other trees, remove grapevines to prevent trees from being damaged, or sometimes the property owner just wants limbs/branches trimmed back for aesthetic reasons. Unfortunately my brother has a terrible fear of heights that he wasn't really aware of until after his father in law loaned him the money to start the business and some working capital. He is a very good pilot for fixed and rotary wing RC aircraft though and since we are both good at fabrication I think we can create a whole line of tree trimming equipment, chainsaws, reciprocating trimmers, rotary blade trimmers, etc... that mean he'll never have to climb a tree again and he'll still get to show his father in law he can run a successful business and pay back his loan. It really should be easy to do, our fabrication skills are so good I was able to fabricate this entire story while eating lunch in only 6 minutes.
Literally the most dangerous rc airplane ever invented!!!! Love it!!
I remember around 10 years ago BuddyRC helping me with programming a racing quadcopter I bought from them at the Toledo hobby show. They were super helpful!
Imagine ordering a garden cut and at some point a flying Lawnmower lands on your garden and starts mowing it itself.
This is kind-of a dream for anyone with a lawn mowing business. You just need to attach an FPV camera and you can cut your customers' grass from home. It's fly-in fly-out lawn mowing!
This is now the most efficient way to cut grass. I love how you took this seriously, this is definitely one of the best videos on youtube 😂 You did awesome on this project for sure 💯
Some people put plants on their roofs for some reason. Possible usage?
NEXT MUST DO! Construct a oversized radio transmitter that flies like any fixed wing aircraft but is controlled by holding a standard sized (40) RC airplane. One requirement would be that the pair can also be controlled/flown in the normal configuration, except your controller is the size of a .40 ARF. So in summary I'd like to see if you can "Fly a Radio Transmitter by holding a RC plane and manipulating its control surfaces somehow then land and swap places by flying the Plane this time by using the oversized transmitter that just landed. Fly plane with transmitter as we all would, fly the pattern, land now do the same but fly the transmitter with the plane...
Between reality and the art of aeromodelling nothing is impossible..well done great job
This should be Flymos advert
Thanks Peter for keeping the air trimmed nice and short
I can’t breathe lol
I love how you managed to find the most aerodynamic lawnmower as well.
if you replaced the lawnmower blades with a propeller could you make a hovercraft?
If you look closely, you can see the gyroscopic precession of the running land mower, every time he wants to go up, the plane tilts in the direction of the spinning blade.
My suggested solution? Two land mowers and use the mother output of the land mowers to power the plane. DC moters feels like a cheat here
I have 2 suggestions.
1) Crash something else into the spinning blades as it's flying.
2) Convert the mower blades into downwards thrust and experiment with it.
Maybe you need a 'clipped' wing design?
Perhaps you need to add some lawngerons to that fuselage?
I like the way you were cutting through the air!
Nice iterating up to the rudders. It really helped to demonstrate the difference between differential thrust for control and having rudders. Thanks for sharing this with us. :)
man, i remember WAY back, the sketch where they pretended they had to trim a spot on the grass runway, only to "trip and fall" as the "lawnmower" went flying away... ☺
How's the boat coming along? Can't wait to see it
This actually worked way easier and better than most of your crazy "will it fly" builds!
Can you make a VTOL lawnmower / helicopter using the blade underneath
@ 12:53
actually suuuch a smooth and awesome moment of slow mo
it'd be neat if you could somehow rig the lawnmower blade to run as a propellor, but that'd probably require a lot of complex dissassembly and rebuilding the entire lawnmower and not even give very much thrust
Okay, this is terrifying but amazing build. Also, with a high RPM heavy cutting blades spinning I'm sure with it on you have more stability but you'll probably have a little torque to the left. It'd be interesting to see what happens with a mower that has a counter rotating blade system. Unfortunately I don't think they make a dual blade counter rotating mower that's light enough to do this with!
Flite Fest project idea: large transparent plane, made from something like perspex or maybe a transparent 3D-printed filament.
the world's least efficient automatic lawnmower: slapping some giant propellors on it and putting it on an automated flight course
positives: cool, funny looking
negatives: you have now strapped unguarded lawnmower blades to the front of your lawnmower
Wow, that mower really held up. Great video.
This may just be the most dangerous thing you've made to date. I love it.
Did anyone notice the drone with the head at 10:40 ??
After seeing this.. now I need a "lawnmower helicopter drone!" Maybe make drone blades cut? And dream request: The jet/ plane/ glider from Nausicaa (pilot NOT required)
“I’m mowing the air, Rand! I’m mowing the air!”
I was just about to comment the same lmao
Adding winglets would make the wing more aerodynamic.
All the other UA-camrs rebuilding stuff from games and movies, while Peter invents stuff that should be in games and movies!
(Edit: NOW I know where mysterious corn circles are coming from)
I HATE That UA-cam Didn't Recommend me this. I have watched EVERY Video on this channel related to making (object)'s Fly.
I Love that I Remembered your name when I saw Williams New Vid :DDD
I had the original FlyingThingz lawn mower kit. They also had race cars, tanks and a witch.
Their planes really flew like complete crap even for the 1990’s standards. They were nitro obviously but it was a combination of weight and coroplast material that made them unstable.
They weren’t easy to build either. Their center structure was over engineered and heavy laser cut plywood.
Cool project! For an added challenge, how about powering the props from the lawnmower itself? Hmmm..🤔
Been a while since I've been this excited to click a video.
Not only is it a Peter Sripol janky plane build video, it's about THE Flying Lawnmower.
i was thinking: does the lawnmower blades add a gyroscopic effect , giving it stability during flight?
Alright, now we need a drone that has lawnmower blades for props.
surely would be even more cool to get rid of the batteries and use the lawnmower engine itself to generate electricity for the plane
Its really weird to hear my lawn mower flying, but now I know. Thank you for this
VERY creative Peter.
I wonder if the spinning lawnmower blades create some kind of centrifugal force that may affect the operation of the aircraft?
How much was the lawnmower blade spinning affecting the lift/steering?
this lawnmower will be an inspiration to all the lawnmowers out there! i look forward to seeing a future lawnmower astronaut.
dreams CAN come true!
good, LORD that thing is a lead sled! It got airborne only on a wing and a prayer. BUT handled okay once you got it up there. The third motor was a nice idea.
A flying hedge trimmer? Man, where was that when I needed it!
Really though, hedge trimmer drone sounds kind of useful. Insanely hard to engineer (perhaps even impossible), but quite useful.