R/C Hovercraft VS. E-Surfboard
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12:43 Hydrophobic not hydroscopic. Duck you @rctestflight 🦆
I'm looking for the promo on that wakeboard
Be real was really good?
Not sure if I missed it before, but I see it now. Thanks!
Truly hope he upgrades the surfboard
Have you been thinking of making a new solar plane? Or is that long gone? Would be pretty cool to see a new version of it.
Indeed, and would be interesting to see if things has changed material/efficiency wise aswell since the last few years!
Yeah that would be good to revisit, solar panel efficiency has definitely increased since the last attempt.
I agree, this is a great idea
good idea
Yea I would love too see it too
That surfboard seemed neat until I saw the price. I was thinking 2-3k. Not 10,000 dollars....
10k 😳
Lmfao I just went to the site and had the same reaction. 2-3k sounds reasonable for sure. 10k is a farce lol
Is it just me or does their site look a bit scam:y? Not much information and what is there feels a bit generic and no spec to be found about the boards itself.
@@johboh definitely not just you, I noticed that as well. All their marketing material seems straight from this video too.
Also 60km/h and 120min runtime is not in the same range as mentioned in the video (36km/h and about 40min)
2:39 Bruhh... I didn't expect that 😂😂
It's so good because it is not acknowledged by the narration in any way.
I live on the Isle of Wight where the only commercial hovercraft service in the world operates, I have been on it a few times and its always an amazing experience, the ground effect is definitely an area where more research should be done, keep up the great work.
I'm the other side of the water - we're very lucky to have a hovercraft trip right on our doorstep!
I love these ground effect videos, I guess I just really like the concept of it, it’s really amazing. Thanks for making these videos!!
Thanks for the mention!
Hydrophobic ?
Hygroscopic means it attracts water.
Love the work my dude. Love the videos. You’re a davinci.
Yea... I think his mind meant to say that their feathers are Hydrophobic.
The water beads of the backs of those ducks like water off a duck's back! Unbelievable 😂
That's sick. I'm starting an aerospace engineering degree next month and cant wait to learn more on this.
Good luck.
I just finished my Aeronautical Engineering Degree, enjoy it!
Why wait? The web is full of discussion on this kind of stuff.
you don't need to get a degree to learn more, go get some foamboard and a cheap transmitter and start building! it will make your classes where you learn about aerdynamics wayyyyyy more fun
@@MrKyle700 exactly; if you are waiting for university to teach you something you will constantly be yearning for more. school is really great for teaching you the abstract math and physics behind concepts practiced but it’s up to the student to take this acquired knowledge and actually apply it. if i were you and passionate about flight, i would go to the 99 cents store, get some foam board and start filling up that resume!
I had to check out how much the surfboards were… $10k for a boogie board with an electric motor… 🤯
They'll get cheaper if they keep selling.
@@up4openYeah, if they sell at all. An arbitrary paragraph with no spec information about the board(s) at 10-14 thousand dollars is not promising. An electric hydrofoil can be had for half that price (probably more efficient and fun too). The board also looks very nose-up and like it’s plowing through the water rather than riding on plane
@@ethanm3923 Well, you can make them yourself, right? They're simple. Get to it!
Until then, you saw what he was doing with his.
@@up4open I could, and for cheaper, but that was not the point of my comment
@@ethanm3923 These guys are charging 10k, if you can do it for 9.999k, you'll probably sell more than them. And instead of doing it, you're negging them for the failures? YOU COULD BE RICH GUY. lol.
Now turn the surfboard into a hovercraft and you have made my dream come true. I have only imagined such a craft for nearly 20 years hoping to one day see it come to fruition.
The actual hoverboard...
I think a Hydrofoil (Efoil) is the closest you can get right now. See them a lot during summer vacation but never got the chance to ride one..
Your curiosity and problem solving skills are phenomenal. So fun to watch the next adventures.
Nice, the stability of the feedback loop on this one has indeed converged to something really satisfying. Another nice thing about the hovercraft motors is that you could program some differential-thrust-roll-control into those; seems roll stability is one of the limiting factors now and that might really help it shine in gustier conditions.
I only recently made that exact arduino circuit, only to help me not smash into trees when hiking at night, very cool to see soneone else realise how cool ultrasonic sensors are!
Dude looove how strong the ground effect is on that craft! Absolutely awesome! The shots of you surfing with it too! It’s insane!
5:54 that is the coolest camera angle i have ever seen! The water level in the foreground with the craft, and the street in the back with the scale of the hill
Man I learn so much from watching these ground effect vids, Absolutely love it, keep them coming. 🔥👍🏻✌🏻
Sorry, I broke etiquette by posting twice. Daniel, what is your _"LIM_ROLL_CD"_ or Maximum Bank Angle limit? ARSPD_FBW_MIN will prolly need to be tweaked too, as the FC is probably going into stall protection with such low speeds. Just wondering.
Really great footage, some of the best of your ground effect planes
Fully sick dude... seeing you ride together is awesome to see.
Another great video. Your lake seems surreally calm, a perfect place to skim so precisely.
Excellent work, Sir! Perfect demonstration of Chord Dominated Ground Effect where Lift is affected, as opposed to Span Dominated Ground Effect where Induced Drag is affected. You go from strength to strength!
You might want to do an IR camera crack check on those panels now. They're able to flex but not intended to flex while in operation and the cells themselves will still get damaged. A lightweight yet rigid mounting substrate would be advised, or at minimum a support grid underneath.
If you watch that last demolition video from Testflight where Peter Stropol made the many, many winged plane that was insanely stable. I think if a person did something crazy like make a 2 or 3 part accordion super long plane that was optimized to be in ground effect, a prototype may be surprisingly effective,
i like that when he talk about owning a Sony Venice youtube compression just goes nuts
i was thinking to myself, well yeah maybe... it looks like crap tho xD
Looking more and more like an Ekranoplan... which kinda makes sense...
Love your vids! Keep m going! I was wondering when a new ground effect video was going to drop. Love this concept.
I love how good rctestflight has become at making ground effect vehicles that he can experiment with them in any way he likes and they still tend to work
I really like you experimenting with new rc plane and boat designs. ❤
Best sponsor ad I've seen yet! NIce job!!
BEAUTIFUL!
Nicely done, stable, and the wake is perfect ! I'm surprised you aren't doing this professionally.
That chase footage is fantastic.
Beautiful cinematography of those chase shots!
8:47 That's great! Using centripetal force to keep the food on the plate!
2:40 dude this made my subconscious mind tingle
Very nice design evolution using a lotta tools in the toolbox. Congratulations!
this is so beautiful!
those shots from and with the surf board are really cool.
Just put the video into the highest quality and holy moly it's beautiful
You are mastering ground effect vehicles. Very entertaining, thank you!
I think he's going to help start a ground effect travel service from Seattle to LA, then Alaska to LA, eventually Tokyo.
thank you for the inspiration sir
A shot like the one at 5:54 is just so beautiful to me. Enough water around here, but nowhere close to me that actually has a hill like that in the (close) background. And I'm sure it's just some insignificant every-day-life shot for you :)
As long as you can get past the shallow soil, the earthquake, tsunami and volcano risks, it's really nice.
@@up4openwhere is this?
I love your projects. It's giving me inspiration🎉❤
Giving me some good ideas, in this video and the last one, for when I finally make my own boat. A solar powered boat, with sails and panels, sounds like a good and feasible idea.
Looking forward to the next iteration of this craft
man you put out great content. I always get excited when I get a notification. Thanks for another fantastic video!
Amazing video man. Fun as always.
That cold weather looks soooo nice right now.
I love the googly eyes on the front. Great attention to detail.
Add split flaps to the rear underside of the wings to "seal" the cushion area during take-offs and landings.
Another great video both technically and from your high production values.
Now I expect we’ll see him turn the powered board into an autonomous boat. 😂
😂
Once again another awesome adventure with you !!! Thankyou for sharing !!! Fascinating !!! 😉😎
I loved the solar plane videos. Imagine a plane that can stay airborne forever
@rctestflight the flat/kf airfoil that you have is not great to get high pressure under the wing because it relies on the fact that the flow is constricted at the back with the elevons. You might be losing pressure that way. Try a more aggressive airfoil with some camber and a lot of thickness if possible!
That thumb gag, actually made me laugh, great work.
Excellent. I always enjoy your ground effect experiments
It might be interesting to see if the e-surfboard can pull some stuff? Like either a tube with a cooler in it or even a small boat?
oh no, solar powered E-Surf? I don't think the Flexible Panels are strong enough to sail yet, but...
it looks like it already has a hard time pulling itself over the water
Bro deserves all the subscribers in the world! Thanks for all your videos!
Sweet troll at 1:30. A manned glider landing that runs long and the clip is cut right before it flies off the end of the runway. Presumably to crash into the cornfield.
Nice video! Loved the quality of the avatar camera! Very cool!
I love your videos so much!
0:55 Instead of being circular, vortices in proximity to the ground become elliptical as the airflow is pushed outwards. This causes the effective aspect ratio of the wing to become greater than the geometric aspect ratio and reduces induced drag. Both lift (and airspeed for any given engine power setting) are increased.
Consequently high cord wings are favoured in ground effect over high span wings for ground effect vehicles.
in Formula 1 motor racing, the aero designers frequently will induce vortices at the front wing which serve to "seal off" the floor of the car from outside airflows, efectively making artificial invisible skirts. I'm not sure if this would work on the R.C. Scale, but it might be an interesting way to make a skirtless hovercraft. this MAY end up making negative lift however, which is obviously optimal in a race car, but not for a hovercraft of Ground Effect vehicle.
Nice 124 Abarth Sebastian!
Amazing!
Daniel, I love watching your videos. Thank you.
You're always tinkering and inventing. I like it.
Very interesting experiments, what have you been using to waterproof the foam board?
Oooooo. Nothing like seeing my fav TH-camrs start new projects!!!! Yippie!
With the "hovercraft" motors you might get away without par thrust. You could switch the servo to turn the front motors, giving better yaw control without dipping the sides in the water.
I wonder if small hydrofoils would help with the abrupt stopping, while also not dragging too much.
low-alt option: light, thin rod with a hydrodynamic floater on the tip. attach it on a hinge to the nose so it trails under the fuselage. connect the midpoint of the rod via cable to a cable-potentiometer in the fuselage. use this, with some trig, to measure the altitude off the water in a more direct way. (similar to the mechanism used in a toilet tank)
the experimentation would be to see how small and short you could make the dipstick. if it's really long, it could be measuring the altitude BEHIND the vessel, so a shorter, more vertical one would be better for measuring, but would also put more force on the stick, meaning it'd have to be larger to survive. 🤔
*Summary of "E-Surfboard VS. R/C Ground Effect Hovercraft" by rctestflight*
*Ground Effect Vehicle (GEV) Design and Testing*
- Experimented with a new ground effect vehicle concept.
- Integrated lift and stability features from forward flight.
- Used Onshape for design sketches.
- Built the GEV using foam and added hovercraft ducts.
- Tested the GEV's ability to float and lift off using tilted front motors.
- Added winglets for pitch stability.
- Hovercraft motors added extra weight but also helped with lift.
*Autonomous Flight*
- Implemented sonar for altitude control.
- Struggled with Waypoint Mission due to low altitude settings.
- Switched to manual throttle control for autonomous mission.
- Replaced sonar with a waterproof version.
- Added steps to pontoons for better gliding on water.
- Achieved decent performance with simple proportional controller.
*E-Surfboard*
- Received an electric surfboard from Surf Nico.
- The surfboard is easy to ride and reasonably fast.
- Attempted to chase the GEV with the surfboard but couldn't keep up.
- Surfboard's top speed is around 22 mph (36 km/h).
*Final Thoughts*
- The GEV's wing cord length was a bit too deep for optimal ground effect.
- The surfboard is fun and easy to learn, good for cruising around.
- The video ends with a promo code for a discount on the Surf Nico board.
Can the air escaping from the pistons be directed in a way to provide a little bit of additional thrust?
Cinematic Daniel
I wonder if snow speeder style (drag flap) type control surfaces would work better for you here, rather than elevons.
Good job and great videos 👍
Cool video. We would love to see you make a DIY version of the surfniko board.
If you want to see a few takes on DIY water jet surf boards you can look at RCLifeOn and Hacksmith Industries. Both have videos on the construction and build of electric surfboards.
RCLifeOn also tried making a Hydrofoil surfboard, but with very limited success.
The RCLifeOn surfboard totalled about $3K in parts and seems to have reached about the same speed as surfboard in this video. I can't remember if he ever talked about the battery time though. But being DIY it's limited by budget and how much weight you can add.
Don't remember much at all about the Hacksmith version. But their production is always polished so entertaining to watch. And they too have given the hydrofoil idea a spin. And they had a little better results.
This gave me an idea what if we add ground effect to maglevs to reduce the need for electricity and reduce resistance like once it’s going however fast the magnets would only need to be used for stabilizing and movement but not the lift at lest not entirely
Just a cool guy having a good time. Keep it up.
im always waiting for your videos and enjoy your projects.
wish i could do such stuff too!
keep it up!
I hope your thumb heals soon! heheh
1:39 this is such a cool looking craft!
Airhogs made a ground effect vehicle called the Storm launcher several years ago. I had one as a kid and remember it working very well.
super cool vid!
You finally did it
That electronic surf board looks like something I wanted as a kid, especially since I live in Ontario between the great lakes
We have water in every direction! Even all over inside the state! That board looks like a blast! I bet you can find a way to extend it's range, by A LOT. Nice work on the GEC!
Rule #1 is the 70% rule. All cruise speeds should be no greater than 75% max, to conserve parts and fuel. I admit, however, that's old screw powered naval ship lore. Newer designs might require different drive numbers.
Cruising at max, is really never a good idea, with all vehicles, for the two reasons you state. Extending range however, via more batteries wired in parallel @@up4open is definitely an option.
@@DetroitMicroSound Some day solar tech will be strong enough and reliable enough to wear.
2:39 Get the super glue, you'll be fine
Love ur vids bro
I'd be interested to see a similar vehicle using 4 drone motors controlled by a flight controller keeping it stable. Basically a drone but with wings so that the quad motors generate ground effect and stabilize rather than full flight. That or I'd love to see a "hover craft" that uses 4 quad motors and a flight controller to control its altitude based on sonar data. It'd would basically be a low flying quad at that point but the idea of it staying at a fixed low altitude above the surface automatically would be really cool. Not efficient at all but something about staying a foot or so above the surface like there's a force field feels so futuristic and cool to see. Especially if it can maintain that distance over uneven land.
I'm curious if you had moved the hover motors back further if you could have achieved more of a hover like flight that were after
Just a quick FYI. Sony Venice 2 didn't shoot Top Gun: Maverick. That was Venice 1 with the original Rialto. TG was shot in 2018.
Love the easter egg with the thumb cut off.
I have been watching your videos sencs you built the cargo condor, My question is where are you getting the 6 mm depron foam? thanks
perfect match for the race and looked like you had much fun.
The little happy face! He's just happy to exist 😂
Man watching the plant come down and not even touch the water yet leaves this smoothed out wake was soo cool to see. Imagine if this thing was big enough to carry people. Kinda reminds me of the old Soviet Sea Dragon.
I've always thought moving the center of mass forward would make an aircraft more tail happy, since there are less mass at the back, there are less mass that the control surfaces has to move