1916 The Magnus Effect, The Flettner Rotor And Beach Games

[@online247365]

Here in the United States, there's a toy called “X-Zylo" that is a commercially available version of what was made in this video; due to it's aerodynamic design, the manufacturer claims that it can be thrown 600+ feet or 200+ meters!

[@ThinkingandTinkering]

i am not surprised mate lol

[@johnland7318]

It's been on sale in the UK, too.

[@edwardphillips8460]

Glad to see your soldiering on. Take care of that cold.

[@ThinkingandTinkering]

welll - you ave to mate lol

[@biga8u]

Sir this was very informative & enjoyable to watch. Thanks for spreading your joy of learning & science to the rest of us. Please keep going sir!!!!!

[@ThinkingandTinkering]

I am glad you liked it

[@ericblenner-hassett3945]

If you are careful, you can use pop cans for a similar toy. My brothers were making them in the 80s by drinking a can of pop, cutting inside the top to keep the crimped lip and cutting off just under the logo. The closer to flat you could cut off the bottom, the better they flew.

[@ThinkingandTinkering]

awesome

[@orpheuscreativeco9236]

This works with a beach ball if you strike it towards the bottom with fingertips. It will fly much further than a blunt strike can drive it. I was actually thinking about this effect in connection with all these unidentified flying objects that people have been describing lately. It would make for a good drone coupled with a gyroscope for stability. 😅 Just a thought. Great video Rob! 👍

[@ThinkingandTinkering]

tat is a good thought - cheers mate and thanks for sharing

[@staycurious8650]

As always, your content never ceases to amaze and amuse. 😃

[@ThinkingandTinkering]

cheers mate

[@MK-lk7nc]

I love this channel. Thanks so much for all the informative, educational content. Always a pleasure.

[@ThinkingandTinkering]

cheers mate and glad you liked it

[@LeighHowells]

Interesting stuff. All new to me. Every day is a school day! Thanks.

[@ThinkingandTinkering]

awesome mate - cheers

[@marcfruchtman9473]

I do find the Flettner Rotor fascinating. Thanks for the video.

[@ThinkingandTinkering]

me too mate - cheers

[@thatcheapguy525]

hope you're feeling better soon Robert. the bugs come across from our European neighbours without any border checks in that part of the country, as does some of their tv and phone signals

[@ThinkingandTinkering]

cheers mate

[@dav1dbone]

Reminds me back in the 80s throwing sticks over the nearby field, a certain type of stick thrown into the wind would hover vertically, we called them "trick sticks", it made a buzzing sound as it hovered.

[@unclejohn11]

As always great video Robert 👍

[@ThinkingandTinkering]

cheers mate

[@slicker1444]

That was cool ! Something in theory we all should have figured out but something that I never would have thought of ? Now got a whole lot of ideas in my head for this ???

[@ThinkingandTinkering]

nice lol

[@slicker1444]

@@ThinkingandTinkering Thanks Robert, love your video's they really make you think of what is possible !!!

[@johnscott6047]

"Magnus Effect" - I didn't know what this was called - thank you. I used to play with a nasal mentholated inhaler - like a "Vicks nasal" thing. I'd take the outer casing and press down hard until it popped forward The pressure of my thumbs downward and the friction of the skin, would make it spin backward and as it moved forward, it moved up and hovered.

[@Knight8365]

I've got a summer cold too Robert, I sympathise. Get well soon.

[@ThinkingandTinkering]

lots of chicken soup mate!

[@MindsetOfTheRich]

great video, very informatic. keep up the good work !

[@ThinkingandTinkering]

cheers mate

[@10sheds21]

I've got my bottle and tape going to play now. I studied applied maths at school but now in retirement how I wish I had paid more attention. Hope your cold gets better soon

[@ThinkingandTinkering]

awesome mate - have fun

[@jimdaly5077]

Hope everyone picks up the bits off the beach after playing. Good video. 👍🐝🌞

[@ThinkingandTinkering]

indeed mate

[@Jezorius]

Great work love the knowledge, keep it up 👍

[@stewartpalmer2456]

Beautiful. A few years ago a circular paper airplane won the distance record. For some ideas search this, "world record paper circular airplane designs".

[@Vibe77Guy]

I remember a mass marketed toy just like that bottle part.

[@ThinkingandTinkering]

never seen one mate - but doesn't surprise me - maybe time for a revisit!

[@sailingoctopus1]

I imagine that you can get the same effect by rotating the surface of the cylinder as you do by rotating the cylinder itself, so if you cover a cylinder with a fabric then the cylinder could remain static and you would rotate the fabric around the cylinder, perhaps driven by some kind of friction device or by a toothed-belt sewn into the fabric driven by a small motor. The Flettner rotor devices I've seen have all rotated the whole cylinder, which must use more energy. A static cylinder would be structurally stable and wouldn't need bearings.

[@ThinkingandTinkering]

cheers mate

[@PetraKann]

“The Magnus effect is a particular manifestation of Bernoulli's theorem: fluid pressure decreases at points where the speed of the fluid increases. In the case of a ball spinning through the air, the turning ball drags some of the air around with it.” Tennis balls and golf balls spinning in a certain direction affect the trajectory. A slice forehand in tennis tends to travel further and upwards. A top spin will do the opposite

[@ThinkingandTinkering]

cheers mate

[@David_Mash]

Ok the tube achieves lift, what if the inside of the tube had an impeller to drive it linearly?

[@ThinkingandTinkering]

try it and see mate

[@Pwecko]

"Now, when fuel is running short". Fuel is not running short. There is more fuel available now than there has ever been.

[@ThinkingandTinkering]

is that right

[@Pwecko]

@@ThinkingandTinkering Yes. There is a vast amount of shale gas, which was not accessible in the past. Whether we use it or not is a different question. Also, there are estimated to be 1.65 and 2.09 trillion barrels of known oil reserves around the world, according to BP. I'm sure more will be found in the Arctic, and possibly even the Antarctic, when it is economically viable to drill for it. Also, all the waste plastic in the world could be melted down and processed into fuel. It is being done right now in places. It's just not viable on a big scale when it is so easy and cheap to drill for oil and gas. Any shortages of fuel are the result of incompetence or malign actions, not because it is 'running out'.

[@davidbarnes241]

Thank you for the few minutes of intellectual entertainment. You really have an amazing ability to communicate 👏👏👏

[@ThinkingandTinkering]

wow cheers mate

[@vorg_]

We used to fold these out of paper and throw them at the whiteboard when the teachers weren't looking.

[@ThinkingandTinkering]

cool

[@VeryWarmBear1]

What do you think of a Magnus effect wind generator for power generation on Mars?

[@ThinkingandTinkering]

never thought about it

[@Struthio_Camelus]

Remember that Mar's atmosphere is about 100 times less dense than Earth's.

[@nonoyorbusness]

Thats no cold, its the arcturus variant! 😂 !

[@ThinkingandTinkering]

lol

[@gshingles]

I know it's a bit contentious, but I think the air being dragged along the surface of the cylinder by the coanda effect and then departing the cylinder due to the momentum it gains from the energy in the rotating cylinder and overcoming the coanda effect causes the reaction of the cylinder due to the departing mass of air. That might cause localised pressure in a confined area, such as near the ground, giving an additional reaction force but away from the ground that air is just going to keep on going, dissipating its energy into the surrounding air at a lesser rate than a solid barrier. It's like a really inefficient jet engine. Contentious because that's how airfoils work. Less to do with pressure, and more to do with redirection of mass :) Hope you feel better soon.

[@ThinkingandTinkering]

I have read three competing explanations mate - which is why i said perhaps the most intuitive explanation is

[@gee3883]

Hope ya feeling better soon RMS.

[@ThinkingandTinkering]

cheers mate

[@shihasnarvan]

Hi,can you please make a video on how a gyroscope is used to stabilize a plane or rocket?Thanks

[@ThinkingandTinkering]

sure

[@shihasnarvan]

Thanks!

[@ashleycawley5816]

Hope you start feeling better soon mate!

[@thedevilinthecircuit1414]

I'm pretty certain the throw toy you created does not benefit from the Magnus Effect. Rather, it relies on gyroscopic precession to maintain the tube in axial orientation to the direction of travel; this promotes smooth airflow through and around the tube, generating dynamic lift and allowing it to maintain high glide ratio numbers. There was a plastic throw toy in the late 60s made by Wham-O that was the same construct.

[@seasonallyferal1439]

Hi, Robert thought you find that it was found that ionic fluid is piezoelectric interesting.

[@ThinkingandTinkering]

that is interesting thanks for sharing mate

[@TheWorldBelow360]

That auger looks like a really pretty serious fluid pump.

[@ThinkingandTinkering]

for sure mate

[@stevetobias4890]

Very cool video Rob. Obviously this was done at your home. Just hope that no sralkers can use this to find out your home address. Hoping that the majority of subscribers have the respect for you that I and many others do.

[@barleyhopps]

Baseball pitchers make good use of this

[@ThinkingandTinkering]

they do indeed

[@Nico-vh1qp]

Few adjustments and it could make awesome kite👍

[@ThinkingandTinkering]

for sure

[@anthonydunn9532]

Just an idea, what will happen if you try a series of disks (cd) spaced apart on a shaft and repeated the experiment? Tony.

[@djsnowman06]

What do you think of the "Lenz 2" rotor. It seems to be very popular.

[@ThinkingandTinkering]

it is supposed to have a tsr of between 0.8 and 1.2 so it must be doing what it says that is using drag and lift as all VAWTs are variants of Savonius or Darrieus using either drag or lift it seems like a good idea to combine the two mate

[@travismoore7849]

I kind of like the ball free rolling on a spinning cone.

[@ThinkingandTinkering]

cheers mate

[@queenstreetsystems]

haha brilliant. get well soon. honey, lemon and plenty of hugs

[@ThinkingandTinkering]

hugs are always the best answer lol

[@davidredgate1801]

get well soon

[@ThinkingandTinkering]

cheers mate

[@clkbateman]

Im guessing this is the same as Hop-Up used in air soft guns

[@ThinkingandTinkering]

i don't know mate - i use it for plastering ceilings - I stand on it when i do that kind of work

[@Sailorman6996]

The Magnus effect is created by a surface spinning with the closest air spinning with the rotation. As the rotating round object is exposed to an air stream, there will be one side where the air want to follow the rotation. The air on the other side will meet the air from the rotation, and those two streams have no where to go so they build up a pressure on that side of the round object. The higher pressure will create a force to the round object. The object will push the boat or whatever forward. In the sport table tennis this effect is very obvious. The bottle you threw was unclear. It could been an open end of the bottle was going towards the wind, that would just been a round wing. The bottle need to be thrown sideways with a spin to achieve Magnus effect.

[@ThinkingandTinkering]

lol - ok

[@jimbobarooney2861]

Imo this would be akin to a spinning bullet, bullets are spun to generate stability in flight , right hand twist and left hand twist barrels exist, meaning I don't think this is the Magnus Effect, unless there is a cross wind

[@weedfreer]

Of course, the other best way to observe the effect is to watch the How Ridiculous boys lobbing basketballs at nets off of reservoirs and cliff edges. 😅

[@ThinkingandTinkering]

lolol

[@weedfreer]

@@ThinkingandTinkering 😅

[@draagh]

Get well!

[@ThinkingandTinkering]

cheers mate

[@jimbobarooney2861]

While you were pushing the tube along the table and demonstrating the effect, the tube should be rotated in a way that the top surface travels back toward you to demonstrate lift, it appears you doing the opposite

[@ThinkingandTinkering]

i am clearly not as it gets lift - you see the lift in the video - so either I am doing it right or you are wrong in what you say

[@jimbobarooney2861]

@@ThinkingandTinkering while you are sitting at the table, that part of the video is incorrect

[@nugrohosumanto6390]

Hi Rob, You sounded kind of under the weather. Are you okay? Take care and thanks for the great vids mate. Cheers.

[@ThinkingandTinkering]

my wife is a teacher mate - we get everything going around lol - but I am good cheers

[@Unpopular_0pinion]

Kick that cold's ass, Rob!

[@ThinkingandTinkering]

cheers mate

[@mac-qt3wd]

Hi rob speaking of generating lift any idea why they canned the hovercraft as commercial travel? I read fuel consumption but that stinks of bs to me. Ever played air hockey at the amusement arcades? Doesnt take a lot to make that puck fly!

[@ThinkingandTinkering]

i am sorry mate - i don't know why

[@mac-qt3wd]

@@ThinkingandTinkering probably cos it makes an absolute mockery of gravity, as does water itself. Think apple bobbing/dunking. Same as air ships, use helium and they wont 'explode'. concorde gone cos it proves there is no curvature to earth. Quite a remarkably high level of fuckery if you ask me :)

[@lazyfpv3142]

They used to sell these as toys called the.... "X-zylo"

[@ThinkingandTinkering]

cheers mate - never seen them myself but doesn't surprise me

[@konkow-kv5yu]

This Man and Son are a National Treasure...which Nation? All(Including universe)

[@ThinkingandTinkering]

all men are one nation mate

[@Heshhion]

Could u finish the steam engine? I was right into it, but it ended... Love yr vids!!

[@christopherblair8787]

What has happened to your wind turbine project? I'm enjoying your video's however I am really invested with your wind turbine project and it seemed to dissappear after you started printing parts. Is it still going?

[@larryniidji]

Your toy idea could be a new sport not unlike darts or jarts or for the matter horseshoes. It would require developing skillful throwing at a target. As an open air sport it would be even more challenging.

[@ThinkingandTinkering]

for sure mate