Skeletonized Diabolo Projectile - Spin makes everything better?

Another test from SMALLATHE channel. Saar calls these "Skeletonized Diabolo" and are made from solid brass and an allen countersunk screw. Since SO many people really believe that rifling cures everything from a broken arm to a broken contract, it was a good opportunity to dispel this conception.
SMALLATHE CHANNEL:
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[@mattv2099]

You should Exo-skeletonize it, bruh

[@sandtanmaroon]

You still alive man? Holy shit

[@M80Ball]

Dafuq happened to you?

[@gunsareawesome5358]

I miss you so hard bruh!

[@sandtanmaroon]

pls come back dad

[@Adamant_Consternation]

@@M80Ball The TSA really cut back on their Optimal Operational Operatives.

[@OGsDangerShow]

Danny flyin’ his shirt! Awesome. But I’m gonna need some royalties for that patented finger wiggle. 🤔

[@loddude5706]

Oh here we go, 'Wigglegate'. : )

[@MarkSmith-fw2vv]

Officer Gregg can’t just wiggle your waggle on the O.G’s turf 😂😂

[@843SouthernPride]

Looks to me as a copywrite infringement

[@taofledermaus]

lol

[@Maxtcc]

I love how the universe seems to be sucked through the impact area in the last vest shot.

[@TrikeRoadPoet]

Dang thing looked almost alive, writhing in the air.

[@oddballdynamics.9658]

One of my favorite slowmo’s.

[@borttorbbq2556]

Was just perfect

[@Hairball786]

I need a gif of that. I could watch it for a good long time.

[@christamu2]

A firearm? No sir this here's a screwdriver.

[@john-henryrabb3357]

My AR15 self-identifies as a Black woman. My camo-painted shoty self-idntifies as a...uh, MIXED woman. Are you assuming her gender and species, officer? That's a civil rights violation.

[@drunkenbogan]

Im still amazed that with all the evidence throughout your channel, people still blame danny or the whole "rifling is always better" fuddery.

[@planescaped]

They should go watch Forgotten Weapons/Inrange/C&Rsenal so that they have some actual gun knowledge... instead of just getting it all from Call of Duty.

[@mgelliott86]

If there's one thing I've learned watching this is that it's never Danny

[@Obsidian0Knight]

@@mgelliott86 he is dead eye Danny after all. Both him and OG are really good shots. But Danny is really good. You see it especially when they do have an accurate round going.

[@christiangraham4579]

Some people suck

[@caffeinatedinsanity2324]

@@Obsidian0Knight Don't forget Darren, despite the fact everyone shit on his goofy stance.

[@johnmorgan1629]

Jeff's assessment of accuracy, when he went 'Meh.' Good technical assessment. Know what happened to OG's finger now, Danny commandeered it, a la the wiggle shot.

[@barrylitchfield250]

Just buy the shirts and think of them like buying Girl Scout cookies that won't make you fat. They're both for a good cause!

[@taofledermaus]

lol thanks Barry

[@yootoob6003]

You fellas got hats or caps 🧢 on the way?

[@brentkeller3826]

Thanks Saar for sending these. Thanks Tao and Crew for showing us and putting up with our...quirks.

[@SurvivalRussia]

Thank you for keeping us all safe, both on and offline!

[@taofledermaus]

lol thanks Lars!

[@jessepitt]

Two of my favorite channels complementing on another, excellent!

[@chuckaddison5134]

It is counterintuitive that a non-spun projectile would be more stabil than one spun. Yet I've seen it many times on this channel. Thanks again guys

[@DinnerForkTongue]

It's counterintuitive because you have to discard the general consensus/dogma and actually research physics to discover what _is_ adequate to the situation. Kinda like Imperial Japan and putting bayonets on everything.

[@dustydustydusty]

I always spin my fists in a fight for supper accuracy.

[@carlosandleon]

actually you do, you twist your fist about 90 degrees from vertical to horizontal as you throw the punch ( if you do it right)

[@dustydustydusty]

@@carlosandleon my pee also spins

[@zachprows2691]

@@carlosandleon u obviously have no idea about fighting if u think that matters or is possible in a fight.... Plus the fact that u r that guy that feels the need to voice ur expert opinion on a comment that is clearly a joke shows me enough to voice my expert opinion and that is that u sir r a complete fuck bag that no one likes to be around because ur a know it all 1 upper that probably has pathological liar tendencies, I bet u tell ridiculous stories about urself that or obvious lies..... All that gathered from ur douche comment....

[@comeandtakeit5183]

@@zachprows2691 Seek help. 😅

[@polarknight5376]

@@dustydustydusty it does, humans actually evolved rifling in the urethra for better accuracy. Only God knows why.

[@JinsokuYoroi]

The Taoflefer finger wiggle

[@LordDragox412]

4:41 "That's a clean hole though" 5:00 Don't you dare wiggle your finger in my alan cavity! D:

[@petev.6598]

Second grade one. Only OG can master the First Grade Finger Wiggle.

[@Stigstigster]

@Howie Felterbush The right letters in the wrong order! I love it and that's what I'm calling my alan cavity from this day onwards.

[@elliotschka]

Danny - Launch director *hahah omg so cool* - greetings from germany

[@lukasdimmler2622]

Regarding spin stabilization: If a solid object has a way to dissipate rotational energy it will tend to rotate around the axis with the greatest moment of inertia. For long slugs this obviously creates a flatspin and therefore serious loss of accuracy. If, however, the slug is shorter than its width or the dissipation of rotational energy is slow enough ( rifle bullets) spin is creating more stability in flight.

[@edlubs11]

That explains foster slugs being kinda stubby. Is there a specific length past that makes this true? Would a 12 gauge diameter by 12 gauge length have stability?

[@JessicaBiros]

The intermediate axis theorem? Possible, but I think that it is far more likely due to the gyroscopic effect. The slug is designed to stabilize itself by bouncing off it's own shockwave, and when rotating, that normally corrective force is offset because of said effect, causing instability.

[@sharkface129]

@@JessicaBiros gyroscopic (in)stability is exactly what causes the wobble because it's not spinning on a stable axis. If you know about intermediate axis then you should know that's how it works out.

[@lukasdimmler2622]

@@JessicaBiros I'm not talking about the intermediate axis theorem. Since most slugs are rotational solids there is no intermediate axis. There are two axes with exactly the same moment of inertia and one axis with either a greater or a smaller moment of inertia. The third axis is along the shooting direction. The reason for the instability is much simpler dimensional analysis: The angular momentum is proportional to the moment of inertia around this axis multiplied with the rotational period. The rotational energy is proportional to the moment of inertia around an axis multiplied with the rotational period squared. Assuming the angular momentum is constant the rotational axis of a solid cannot change from a axis with smaller moment of inertia to a axis with greater moment of inertia and vice versa without dissipating/ gaining energy. For example: The slugs moment of inertia around the longitudinal axis is half its moment of inertia around a perpendicular axis ( since the slug is rotationally symmetric the exact axis doesn't matter). If the rotation shifts from the first axis to the second axis the rotational period must be halved to keep the moment of inertia constant. Let's see what the rotational energy does if the axis shifts: Double the moment of inertia and half the rotational period squared results in half the rotational energy. Therefore half the rotational energy has to be dissipated to make the axis shift possible. Since drag forces are dissipative it is far more likely that a long slug looses rotational energy than a short slug gaining rotational energy. Therefore short slugs get stabilized and long slugs get destabilized by rotation ( assuming loss of rotational energy is fast enough to impact the slug before impact).

[@lukasdimmler2622]

@@edlubs11 The calculation of moment of inertia of solid objects can be tedious and difficult. I think a cylinder with the same length as the diameter probably has about the same moment of inertia around the longitudinal axis as around perpendicular axes. But that is exactly what you don't want to have: You want to have the greatest difference possible between the moments of inertia to create the maximum energy difference. Therefore rotating slugs should either be as flat as possible or really long and aerodynamic ( rifle bullets).

[@Baker-tx7yg]

Just grabbed a t-shirt !! Love you guys and everything you do. Your work helps to show people that mass accelerators are not just death machines !!!

[@taofledermaus]

thank you!

[@aveleziii]

This is the content I love. Helping others, building up the community, educating people, and trying something for the sake of doing it. Great video, great topic, and Danny taking on finger waggle duties. Thanks for always making great stuff

[@HereticalKitsune]

Keeping us safe by exploding a red pumpkin as a start, perfect! :D

[@beardedskadoosh8835]

Wait a moment, a Taofledermaus video showed up on my notifications with ads when said video was played. Ahhh yeah.

[@taofledermaus]

Just don't show any firearms and YT doesn't know how to demonetize our stuff. lol

[@ghostindamachine]

Amazing, super and highly informative. This video should go viral. Launch and science director Danny, combined with the outstanding videography is a must see.

[@taofledermaus]

thanks

[@ghostindamachine]

@@taofledermaus I hope it triggers the YT AI in a positive way

[@loddude5706]

Caution: To this trained eye, that 'oak tree' looks more a stick of CIA 'camo-trunk' tactical broccoli stuck in the first berm.

[@Bloodreign137]

Lod dude I’m not sure what that is but why would the cia care about a police officer and a couple of older guys hanging out on BLM land?

[@loddude5706]

@@Bloodreign137 'Acorn-watch' cross training exercise with the forestry mob. (Not that much cover for them in the Calif. desert, hence the shrivelled SEAC mil-surp broccoli) As to why? Danny's cat like shooting prowess with dodgy ammo. They must figure he's been genetically mogrified.

[@Bloodreign137]

Lod dude I live in California so I was just wondering what was up, I’ll look into it thank you

[@leepalmer3634]

Great practical demonstration! Thank you for doing what you do

[@robertfitts6765]

Miracle of Miracles, there was an AD at the start of the video. Congrats!!!

[@ParanoidCarrot]

the shock wave explosion was heckin cool !

[@eyedocduncan]

Another nice video, I like how you showed the plane spinning to illustrate spin isn't always desirable.

[@TrikeRoadPoet]

Dead-eye Danny has some seriously amazing precision light activated sighting devices (eyes) and equally amazing patience. LOVE this channel, testing ideas with an eye towards actual results and building knowledge, even as we have fun. Might be fun to ask viewers to submit ideas for projectile shapes to try for stability, along with a $10 spot to cover the making of the test shapes. Sort of a contest, winner for the most stable projectile gets a signed picture of the T-mouse crew or something.

[@NoAHr83]

Certainly my favorite science channel. Thanks for your fantastic videos.

[@MB_84]

The bloody pumpkin was a fun surpris🙂 Thanks for another great video!

[@natek1993]

You guys are the best. Keep up the good work Jeff and Danny.

[@taofledermaus]

thanks Nate!

[@oddballdynamics.9658]

I think I could tell you what projectile made each hole in that poor table. Now there is a new one. Lol. This is one of my favorite channels.

[@Spartan375X]

I learned a lot from this very educational and informative video on projectiles forced out of a high velocity mass projectile cannon!

[@SmallMartingale]

Very cool! It always blows me away how consistently good you've gotten with the chronos high speed slo-mo. I can't think of anything more difficult to capture on camera than a speeding bullet

[@theonewhoknows2]

Not when you got consistant shooters

[@BosnWayne]

Good mass accelerating, Danny

[@TheZombieSaints]

Danny can aim that mass accelerator like it was part of him. Awesome work!

[@brianartillery]

Nice one, gents - and you could never blame Danny for lack of accuracy - he's one of the most superb shots I've ever seen. Fact.

[@3isr3g3n]

God i love this channel- gotta get one of these fancy shirts

[@cigarsarge1]

Great content as usual.

[@ryansmithza]

Another really cool and interesting video! Thanks guys👍👌

[@ThePapo1980]

Great job as always!!

[@grouchyed2561]

Your channel is SO entertaining!!! 👍🏻👍🏻

[@TheSuburban15]

The pumpkin didn't think the launcher was all that safe. ;)

[@nevrcm3261]

I'm soooooo glad YT is keeping me safe

[@lyman360able]

Good job as always. Thanks

[@Casper51tfg]

That was the best pumpkin explosion to date!

[@redpatriot7768]

Was that Danny flying that red paraglider on 80? Man we where drooling!

[@cycoholic]

I didn't get a notification this time, first time in ages for me. Also no ads. But it did appear in my recommend videos.

[@da.2736]

Another great video y’all!

[@insertname290]

Long live this channel... love your humor, we all hate KZbin’s rules...

[@taofledermaus]

thanks!

[@johncashwell1024]

Nice job Taofledermaus (Jeff) explaining the difference between an "Aerodynamically Stable Projectile" and a "Spin Stabilized Projectile". An aerodynamically stable projectile will destabilise when spin is added just as a spin stabilized projectile will destabilise without spin. The engineers decide which type of projectile they want and then design it. For example, the gun on an M1A2 Abrams MBT is the M256A1 120mm smoothbore gun and all of its projectiles are designed to be aerodynamically stable and extremely accurate.

[@KirkHermary]

I'm just some dude sitting at home watching a video. I don't see spin stabilization helping these projectiles. Nice one guys!

[@truckerallikatuk]

Danny with the OG finger wiggle there :)

[@TheOneJokeWonder]

Saar coming with the goods, again.

[@anthonywstanton]

Thank you for the informative video sir!

[@chornk64]

Really nice touch with the red "punch" in the pumpkin. Should do that more often.

[@jeremypifer1587]

I ABSOLUTELY NEED THAT SHIRT.

[@randlerichardson5826]

Great video Mouse Wildman Danny and Officer Greg be safe out there and GOD BLESS youns and your families Amen 🙏

[@WarblesOnALot]

Gday, Or..., Viral ? "Ayyy - CORONA !!!" Gotcha ? ;-p Ciao !

[@TheOlsonOutfit]

Careful, O.G. is going to copyright claim that finger wiggle ;-)

[@alexanderthomas2660]

He actually did!

[@danieljcall3811]

One thing I've noticed for spin stabilization to have a chance at working is that the rate of spin needs to match the combination of diameter, length of projectile, weight of projectile, and shape of projectile. As far as slugs are concerned and this video proved not all shapes need spin. Now if possible to make some of these stable with spin would require a lot of custom choke tube "like" pices and trial and error to get it right which really isn't feasible on a budget.

[@rickbarajas6823]

I love the shirts btw!

[@TruthIsTheNewHate84]

I love how you called out Highstranger951 in the beggining. Some people think they know more than they do.

[@taofledermaus]

There are dozens of comments like his.

[@TruthIsTheNewHate84]

@@taofledermaus yeah, I've seen them. Hopefully this video will make people think before talking about things they know nothing about. Even if it doesnt I enjoyed it.

[@theykilledjoel1496]

Keep up the good work

[@LucasGarrow]

WTH? I've been subscribed for years and had to re subscribe today...

[@freedj27]

That oak tree is fascinating.

[@20alphabet]

DANNY! an unbelievable talent!

[@StreuB1]

Spin stabilization on fabricated assemblies will be inherently unstable due to deviations in the mass distribution about the axis of rotation. aka, they not balanced. Fasteners are some of the most chaotic items out there with regard to their dimensions. A flat head screw has its head impact formed and then threaded. The heads are normally always off center and out of round. Put one in a lathe of drill chuck, held by the threads and pull the trigger. The head wobbles all over the place. The mass distribution is not centered on the mechanical axis of the part itself.

[@Hogbellylife]

Great video

[@steveshoemaker6347]

l gadda have one of those Shirts....With Dead eye Danny on it......Glad you are using the masexcilerator.....l put that idea in the comments a long time ago or something like it...0nce again thanks very much.....!

[@bmstylee]

Supersonic Waggle. I thought that was the OG, Danny, and Jeff's funk fusion trio.

[@metocvideo]

Wonderful demonstration. The argument about spin has been raging since the 1890’s, when a smoothbore barrel with a few inches of rifling at the end, called a “Paradox” was invented. A spun projectile will be more stable at supersonic speeds, a non-spun projectile will be accurate at sub-sonic speeds. A non spun projectile will not behave as well at supersonic speeds, and all projectiles become unstable when transitioning from super to sub-sonic speeds.Let the war of words commence!

[@patricklamshear1806]

Dead eye Danny does it again. 👍

[@seadog4330]

Some impressive results from that Stout test load

[@blindprophet182]

KZbin only gives their people 5 mins to review videos. No matter if its 6 minutes or 6 hours. Its insane they even look twice at this channel.

[@taofledermaus]

When they demonetized the video just shooting clays and would not reverse it, it pretty much told me they were impossible to work with and don't know what the hell they are reviewing.

[@blindprophet182]

TAOFLEDERMAUS this used to be a creator platform, now its astroturfed for select creators and corporations. You cant run expirements or even teach history anymore. As terrible as the demonitization is, the worst bit is the algorithm. If you had started today you probably couldn't get off the ground. Creators can use patrion or subscribe star to help support their channels when revenue from adds is inconsistent but if you dont get recommended nobody will ever see you. I haven't watched this video yet because im waiting to see if it gets green lit for ads.

[@stevenjennings8347]

Awesome informational educational video experience Y'alls God Bless Ya 🙏

[@Smallathe]

Superb demonstration on spin stabilization guys!!! Really amazing how Jeff got the focus on those wobbly spinning slug and Danny aiming true one after another. I'm absolutely sure I would not be able to do this - I know for sure you'd have to look all over the field if I was shooting that thing... The pumpkin... yeah... scary stuff!!! I just wonder - what on earth (or who!!!) did that thing eat before Danny got it... Good thing Danny did get it before it started running at you... (lol) Mental note to self: fill Allen key cavities with epoxy next time :)

[@taofledermaus]

I really expected the wood spacer to prevent that from happening. Thanks Saar!

[@Smallathe]

@@taofledermaus So did I... oh well... live and learn :)

[@davestark2015]

Binge watching all the tests . love the destruction !!!!

[@PencilProper]

Thank you so much for not using a super deadly FIREARM in these videos. As I would be triggered and have to retreat to my safe place.

[@AndyFromm]

3:27 what is in that thing? Doesn't look like any pumpkin I've ever seen...

[@MarkSmith-fw2vv]

Andy Fromm looks like jello

[@TheMikberg]

Graboid eggs

[@marcusholland9425]

water-filled pumpkin with red food coloring

[@frankcerovsky2662]

Taofledermaus is my favorite non-firearm channel ever

[@Angelsilhouette]

I keep wanting our Launch Director to wear a lab coat :3

[@TheOldFatDadGoober]

Spin all the things!!! Good shooting! Awww crap, I meant good accelerating!

[@danielmolloy2747]

Stuck sabot stabilization for the win 👍

[@custardthepipecat6584]

I like that tree!!! : )

[@christiangraham4579]

You guys shouldn’t worry too much about the morons of the world. A lot of people watch your videos and I know you would like to think that everyone that watches are competent and intelligent people, but it’s just not the truth. There are a lot of stupid people in the world, and when they get into a comment section where they don’t have to say words to someone’s face they really show their ass. If it helps, just don’t even read them. If you think a comment is going to dumb you down don’t even continue to read. Not worth the head ache man. You guys deserve better! The shirts are not too expensive people have no idea what they are talking about when they say you need a rifled bore or you need a smooth bore. The world is entirely too complex for their tiny brain to understand so don’t pay any attention to them. They don’t deserve the attention. Love you guys!

[@psycholocke4090]

the Pumpkin seemed to be an undercover watermelon agent. 😎

[@adamofblastworks1517]

Skeletonized?! *The skeletonized body of Dr. Melanie Turner was discovered in a forest near London only a few days after this conversation.*

[@nt_wicked_bunch2717]

AdamofBlastWorks Did she know the Clinton’s?

[@bcubed72]

Skeleton crew "Skeletonized" is a legit word. Look it up.

[@disgruntledegghead6923]

You speak from the future! What more can you tell us?

[@adamofblastworks1517]

I'm sorry to report but you will all be very disappointed in the actual answer... Should I just not tell you?

[@disgruntledegghead6923]

@@adamofblastworks1517 How about something less disappointing?

[@MrOtzelot]

Actually expected more deformation right here on the curcuitboard, sience is a blast of freedom =)

[@guardianminifarm8005]

Good stuff

[@dubcoco1]

They seem to work pretty well from the smooth bore lawnmower!

[@bombn4779]

If I didn't know any better I would've thought that was a firearm but after closer inspection I was able to confirm that it was on fact a taofledermaus mass accelerator.

[@ksgt69]

I wonder if filling the Allen wrench hole with superglue or something that won't compress would keep the sabot from tagging along. Love these slugs, especially when they're launched from the proper smooth bore mass accelerator.

[@dang5203]

Lol!!!😂 Loving, cringing and crying, all at the same time, at the P.C. ewe-toob “proper safe language and vocabulary”. God help us!!

[@soundpainter2590]

There are PLENTY of U Tube channels Showing ALL MANOR of "Projectile launching devices" WHY COWER ? Just asking...

[@dang5203]

Post posterous - I cringe, not cower, that in this nation of supposed liberty and freedom, that someone would fear de-monetization or other form of persecution, for showing a legal tool or speaking of said object in plain language.

[@casey197930]

One smooth bore shot.. wow.

[@flynbenny]

still monetized as of the 22nd of Feb 2020, saw an actually useful ad for something I might buy 👍🏼

[@rocknrollguitar]

Nice one

[@ponthis1]

I wish you guys had a few extra of these. You could load a few backwards. But as always.... You guys rock. Thank you Jeff and Danny, for another awesome video. ...secondary thought... how to stop the shot cup from attaching to the projectile... that could make a difference, right?

[@taofledermaus]

It might have worked but we just a about 7 of these to test

[@Stigvergnuegen]

Many giggle-watts of power!

[@dorgodorato]

Recommended on my front page within an hour of upload? Moving back up in the KZbin world!

[@taofledermaus]

Lol, playing the game.

[@bubbajenkins123]

Adding spin in quantum mechanics can get you into all kinds of trouble

[@travissmith2211]

The green sabot being shoved into the allen cavity makes it look like a backwards zombie max round.

[@swac69]

There is some awsome science speek going on. Love it. I agree with what I could understand and I'll give the benifit to what I could not. I'm perry simple I. Other words. There was the statement in the video that the separation of the sabot does not effect stability. This would be closer to the truth in my expierance for smooth bore but not so with rifled bores. In smooth bore with the type of sabot (cup type is noemaly what is used for Smooth bore) that you are using is made to "pull" off to the rear of the projectile thus causing little to no effect on the flight or stability. That is not so with it bring spun. Think of the three pettles as air spoilers like that on an aircraft. On the lift surfaces all it does is spoil the air and reduce lift and air flow. So when in a Smith bore it pulls itself off the projectile, now same thing spinning bot this is more in line with the propeller not the spoiler, once you add spin and the fact that the cup was sticking to the slug base and the pettles not releasing at the same time it will throw your accuracy out. For at least two reasons 1 there is now an inbalance in weight and 2 there is a greater instance of drag on one portion of the tail effectively negating the ability to selfstablize inharent to the projectile design. I would think you could use a different sabot one that is spun off an away like what is used by 25mm fsdsd-t. These are fired from a rifled barrel and away then rearward as they slow down. Just a thought.

[@pensnut08]

I've shot Fiocchi Areo Slugs through my smooth bore Mossberg slug barrel and in my Remington 870 rifled barrel.. Through the rifled barrel they tumbled (it looked that way on the target). Smooth barrel... I've shot a clover leaf (3 shots) at 50 yards.