Eggs are amazing - the properties of eggs allow them to bounce on soft grass when the mother hen blasts them out the cloaca at 300mph

@TheOGJeff

3 ай бұрын

This comment right here needs more likes.

I think gluing a tail on the egg is a winning idea! I'm surprised it stayed on

@YeanyScience

3 ай бұрын

I agree. All that work in designing the rifled sabots and the answer was so simple. We'll see what happens at higher speeds when the weather gets warmer.

@hermitoldguy6312

3 ай бұрын

@@YeanyScience If you bend the tips of the tail, it'll spin. Dart-players do that to their darts.

@BarackLesnar

3 ай бұрын

Fin stabilized sabot egg projectile

@eriknulty6392

3 ай бұрын

@@YeanyScience if you split the sabot in half length ways it will separate quickly and easy.

Your station wagon is cool

I’d recommend a discarding sabot, one that is 2 or more pieces that falls away from the egg after leaving the barrel

@future_me_6067

3 ай бұрын

That would fix it. I did enjoy the sound of the streamer egg though. Similar to a pulse jet.

@iandrake4683

3 ай бұрын

Came to say the same thing. I think the egg leaving the sabot awkwardly is changing the spin axis.

Something you might try is to spin the sabot prior to firing. This might be possible by tangentially cross drilling the breech for an air inlet from a compressor. Angle the air slightly rearward and drilling a few vent holes at ~180° -- 270° from inlet might help keep the sabot from "walking" in the barrel or being pushed forward. To keep the sabot from being pushed rearward, a pin or nail inserted at say ~45° so only the tip touches the rear center of the sabot to reduce friction. Maybe install it in breech coupler or make it removeable to allow easy breech loading. Friction of the sabot could also be reduced by allowing only the front and rear diameters to touch the barrel. To minimize losses the inlet and vent holes don't need to be that big, but the vent should be 2-3 times the inlet area. Inlet: 1/8" - 3/16" Vent: 2 - 3 holes of same dia. as inlet. Adjust as needed for pressure available. A separate air reservoir and valve could be used to make it self-contained. A section of clear pipe could be substituted in to assist in measuring rotation of sabot via a tachometer prior to firing. This might seem kind of complicated for an air cannon, but may offer better consistency in rate of spin. From other projectile experience, I know that spin stabilized projectiles of different size, weight and shapes are effected differently at different spin rates. Might be cool to experiment with rates for best stabilization, and different sabot shapes for air/spin efficiency.

Sorry if you addressed this in a previous video. They might be weaker this way but try flipping the egg over, fat end forward. They should be more stable in the teardrop configuration than the reverse teardrop you have now. Print the sabots as 2 or 3 pieces, You'll need some kind of tabs to keep them together when handling and loading them. Might work well coupled with a rubberband to keep the "petals" from opening up after you've put the egg into the sabot. You might then be able to use some sort of foam between the egg and the sabot to give it support. This may help the egg spin along with the sabot if you still need that. You'll probably want to compress the foam in there pretty good. Hopefully you can get the sabot petals to let go uniformly shortly after they exit the barrel.

Nice video as always. If you boil the eggs, they probably make more stable projectiles aswell, since the weird dynamics inside the egg get diminished.

@thegrumpytexan

3 ай бұрын

Maybe do the spinning egg trick to scramble the insides so the yolk doesn't offset before you boil them? Have to sit them all up (or down?) so they're consistent though.

Somewhere in the depths of the universe there may be a civilization of highly intelligent chickens, who have absolutely no idea that this is occurring.

@TheZombieSaints

3 ай бұрын

Dear God!

@JaximusDecimus1

3 ай бұрын

Oh, they know. They know...

@ThumpertTheFascistCottontail

3 ай бұрын

I wonder if the highly intelligent alien chickens have made a cannon that fires human fetuses.

@zadams5596

3 ай бұрын

Listen to the Werner Herzog quotes about the stupidity of chickens, then re-read the previous comment, but in his voice. Hilarious!

@TheRadioAteMyTV

Ай бұрын

@@ThumpertTheFascistCottontail On their planet Eating Colonel Sanders means something very different than on earth.

I give you my envyless compliment. Not even on restless nights have I dreamed of a rifled cannon that shoots raw eggs through wooden panels at 300 mph. :-O 👍👍👍👍👍

Always fascinating, Bruce! Thanks for sharing! Also, your wagon is awesome!

Could yolk position have an effect? How about general interior structure of the egg?

A inner locking discarding sabot that separates in half or in quarters wouldn't affect the egg as much when separating. It looks like when it leaves the barrel the sabot starts tumbling which throws the egg off its course.

Strong suggestion you keep the scooter somewhere outside, just covered to keep the weather off it. There have been too many fires caused by scooters for me to have one inside by house. Even if the probability of catching fire might be low, the high cost of losing our home makes an unacceptable weighted risk :-/ (The Varla scooters use LiIon batteries, rather than the much safer but less energy-dense LiFePO4 cells, so they’re much more prone to thermal runaway.) (That said though, that’s a cool enough looking scooter that I’d consider making a little scooter garage just for it. I like the suspension it has :-)

What a car. What about a clamshell sabo that opens after barrel exit

@JaximusDecimus1

3 ай бұрын

With foam tape inside to help grip the egg and impart spin. I think this has a better than fair chance of working.

I opted for the E-Bike instead of the scooter. Your egg idea , hobby, is interesting and goes to show that whatever one does it should be done the best way possible and as thorough as needed. :O)

I believe the eggs rotate along the "wrong" axis not because of design flaws, but because of physics Ignoring air resistance, the rotating egg has no way of changing its angular momentum. However, since the eggs are raw, they can lose their rotational energy to heat and sound of its innards sloshing around. Losing rotational energy without losing angular momentum, and the egg ends up spinning along its axis with the maximum moment of inertia, at the lowest possible rpm If you were to hard boil the eggs to make it entirely solid on the inside, it should spin much better along the intended axis

@hermitoldguy6312

3 ай бұрын

Yes, I think the yolk is neither centred, nor fixed, inside the egg. I wonder if there's a way to break the yolk without breaking the egg - then it might fly better.

@rapsod1911

3 ай бұрын

There is air pocket in egg. Depending how fresh egg is and how it was stored air pocket will migrate. I think that is creating erratic behavior.

@hermitoldguy6312

3 ай бұрын

@@rapsod1911 Ah yes, that too.

@hanswang7891

3 ай бұрын

Air pockets and yolks are irrelevant to the principle I'm trying to state. As long as there is a easy way for a rotating object to dissipate rotational kinetic energy internally, it will end up tumbling head over head; and as long as most of the internals of the eggs remain a liquid, it will dissipate energy internally. The movement is not erratic either, it predictably always rotates along its axis with largest moment of inertia. Edit: Veritasium has a fantastic video on this topic, link: kzread.info/dash/bejne/Y4qEyLyYiN3Po7g.html

And learned something important in life again. Thank you for your tireless efforts.

Okay, so I'm at 3:49 now and I'm thinking: Maybe also try the egg with the pointy part aimed towards the back? I think it will be more aerodynamically stable that way. The next step would be to maybe glue a tailfin to the egg.

@bigharrybushcraft8364

3 ай бұрын

I was thinking the same thing...teardrop stabilizationesque.

Just a thought, but could you make 2 piece sabo (sp?) with a little bit of foam padding folded over the back side of the egg? I think a thin piece of foam will add some protection to the egg, keep the egg in line during its launch, and provide some friction between the egg and sabo to get it spinning. The 2 piece sabo, split along its long axis, perhaps with chamfered inner edge will separate as it leaves the barrel. Just some thoughts. I enjoy your educational videos.

Print a sabot with fins, that is designed to split open and be discarded, like a tank shell.

Maybe if you're roughing up the inside of the PBC pipe with sandpaper or something, it will allow the sable to grip it better. PS, like the station wagon. I remember riding in the back seat facing backwards in my parents and my mom taken driving lessons in it. While I rode in the rear seat.

My man, wood paneling. Cragar wheels. White walls. Cherry. Don't make them like that anymore.

Maybe try 3d printing your sabots with slits so they fold open and shed faster.

The sabots should be cone shaped, on the inside, so that the acceleration force helps the sabot to grab the egg. I suspect the egg would also fly straighter, while spinning, if flying blunt end forward. That orientation would also help the cone shaped sabot not crack the egg.

Honest question. The egg wants to spin on its own axis. Instead of "forcing" it to try and spin on a different axis, what if you found a way for it to spin on its own natural axis. While not the most efficient way to fly, enough of a spin on that angle, may allow straight travel.

place a piece of packing tape on the end of the barrel then pull a vacuum on the barrel before firing. You will get more than 500mph from your projectile.

I think fibinachi numbers are proven to give optimal rotation, so , 8 or 13 ( with correct twist ratio) probably better than 10, 21 twists may be way better than 22.

spudtech used to sell rifled potato cannon pipe , not sure if they still do.

Man thats just the scooter I wanted to get for free too!

maybe you should add a sight. and i also like your car its cool!

How about a printed aperture between the air chamber and the barrel that causes the air to spiral down the barrel, hopefully imparting some spin to the egg

@YeanyScience

3 ай бұрын

we did try adding baffles inside the barrel to spin the air and added a fin the the back of the sabot for the air to push against. but couldn't get the baffles to work.

i didn't skip the sponsored section because Bruce Yeany is a BAMF

@YeanyScience

3 ай бұрын

not sure what that is but thanks

Unless the egg yolk is well centred within the egg, putting s spin on it is likely to cause it to break or go off target. If you cut length wise slots in the sabot, it should separate from the egg earlier as it mushrooms.

@YeanyScience

3 ай бұрын

investigated several types of sabots in the first of this egg cannon series, the expanding cup sabot works well but broke too many eggs when we tried to make one with rifling on it

Have you tested whether an egg is stable when rotating about its long axis? Something like hanging it from a cord, the top of which is attached to a vertical drive shaft (e.g. a small electric motor) might be informative. Fixing (gluing) the cord on- and slightly off-centre should indicate whether spin-stabilising the egg is viable. It looks like you need to resurrect the split sabots which separated on leaving the barrel, thus releasing the egg sooner. Or just accept that the egg-sabot combination is, in fact, your projectile 😆

Maybe when you do this again it's worth dying the eggs hot pink or neon orange to make them more visible during the flight. Just a thought. I hope you aren't paying CA prices for those eggs. In CA eggs come from golden geese, at least that's what the price makes you think.

I wonder if you could have a pre-firing stage where you use magnets to spin up the sabot..?? that way you could just spin-up and fire (vs fire and hope-it-spins-up). Remember how you know if an egg is hard boiled?? (the spin test).. that's what I think is holding back the egg-as-a-football trajectory.

Noted. Gj.

Add the tail fins to the cup not the egg?

they did terminal ballistics on an egg

Make the sabot split after exiting the barrel

The aerodynamics of an egg are so good that they are bad. There is just not much there to keep the egg from wobbling, and when a spinning egg wobbles, intermediate axis theorem kicks in. I think the egg will almost always tend toward minor axis rotation.

@theslowmoguys You should film this, at 100000fps It could be amazing

@YeanyScience

3 ай бұрын

I'd love to if someone with a better camera would like to collaborate on it

normally the sabot open in two pieces

@YeanyScience

3 ай бұрын

That is my preferred type of sabot they open the quickest. I tried several types of sabots in a previous video, including one that opened in two parts. It, however it would not work to rifle it as easily as the ones shown. kzread.info/dash/bejne/ZWeY0M5_p83Ul84.html

40 mph on a scooter? Let's hope you never have to do an impulse lesson on that! (The rate of speed at contact with a rock or pot hole creates a human projectile how far in distance? What is the condition of the projectile before and after the impulse? EEEEEK!) Good to see your new knees are working out, but the real video is your wife's reaction to you riding a scooter with tiny little wheels at 40 mph on a road, or anywhere for that matter. I have a feeling her thrill was very different than your thrill.

[chicken invaders flashbacks]

Awesome video, thanks! On a somewhat unrelated note, eggs don't really expire unless they are kept under direct sunlight, nor do they need refrigeration. Only Americans were fed this pointless lie. I'm not sure why though... :)

@jamesbizs

3 ай бұрын

You know, Google does exist. Americans weren’t fed a pointless lie . But you, weren’t fed a “pointful”education. Americans wash their eggs before sale. So you remove the protective layer, in exchange for removing any potential pathogens. So the fridge, replaces the protection the natural egg used to have. The more you know….

You should have the big end of the egg first, not the small end...

@YeanyScience

3 ай бұрын

tried it both ways, either way they still turn sideways after leaving the sabot

Why would anyone want a scooter? 🤔 Did you ever do a flying comparison of taw vs hard boiled eggs?

@YeanyScience

3 ай бұрын

I do a lot of bike riding, the scooter is a fun alternative. yes I have tested raw, hard boiled and frozen eggs. I will post results in a future video

@jamesbizs

3 ай бұрын

@@YeanySciencefrozen eggs??? They didn’t crack? Now I need to try

@jamesbizs

3 ай бұрын

@@YeanySciencealso, what you need to test, is an internally scrambled egg. also, testing expired eggs is one of the main reasons you’re having issues. The older the egg, the bigger the air pocket and more off balance the egg will be. Buy some super cheap eggs that are fresh. Those nasty things really shouldn’t be eaten anyways, so you’d be doing the world a favor.

Your egg is liquid. It won't spin in that time

@YeanyScience

3 ай бұрын

my guess is there is quite a difference between the exterior of the egg rotation and the yoke inside. it would be interesting to somehow test it

@timebert9467

3 ай бұрын

@@YeanyScience Inertia is working against you. It can be modelled with math, no need to test. The scam of rifled paintball is the same issue, a shell filled with fluid . The egg not being round means that an off-axis rotation becomes more of a thing. Like a dumbbell water balloon (only your shell will break)