Testing to Failure (Scrappy Bush Plane 17)

[@smalljetpilot]

Holy Crap!! 🤯🤯 The Steal Beam was bending off of the concrete floor!!

[@jcims]

Dang brother, well spotted. That's crazy.

[@ronjohnson9507]

Time to truss that beam

[@compt3ck]

I was just going to say that. I couldnt believe that square beam bent that much. Carbon is impressive.

[@MyHumboldtLife]

That's got to be at least 3/4" of deflection at both ends!! Crazy!!

[@TrevorDennis100]

Good gracious. I hadn't spotted that either. That's actually putting a significant bending moment on the hydraulic cylinder. Nothing close to 3000lb, but the pivot point is right on where the piston rod exits the cylinder. It would be interesting to know the relative offset of the end mounting points and the piston rod axis so we could work out the trig and bending load on the cylinder rod.

[@blakeharrell5208]

My two girls (ages 3 and 5) ask almost every day.... “Dad are there any new scrappy videos out?” Just thought it was funny and worth sharing that our entire family LOVES all of your content. As a young dad, aspiring to be a pilot when money allows, this means a lot. You inspire me to work harder and believe bigger, and now that drive is shaping my kids. Thank you. Keep it up!

[@aserta]

Best of luck and wishes!!!

[@MikePatey]

Blake Harrell 👍🤠 thanks for that comment, nothing makes me happier than to hear a family being together for anything. You made my day Blake 🤠🤠🤠🤠🤠

[@patwilson5455]

Lets go!!! I need more positive Mike Patey content in my life more than ever!!!!

[@Mrcaffinebean]

Just gorgeous, every part on this plane is Beautiful!

[@lazyjackass77]

@@Mrcaffinebean Engineering porn.

[@nicholaschriss1706]

Yeah, he's the dude.

[@hiltunentony]

Agree. The positivity is like a beacon ☀️

[@J_Gurn32]

That carbon to steel comparison was wild. Far exceeded my expectations as well. Keep up the great work Mr. Patey. I look forward to every one of your videos, and each receives 100% of my attention. You really do seem like an incredible individual, with a great life that you truly earned. Know that to me, you are an amazing role model, idol and inspiration. More videos! Or perhaps a live webcam focused on a shop project. Thanks Mike and Co.

[@misterb1492]

Mike, as a FAI inspector myself, I have to say, this is a great example of not only the thought process that goes into the design of a stock part (all elements failing equally) on the stock wire but also the cross feed deflection to eliminate harmonic vibration caused by engine vibration (rpm variable) as well as prop blast. I wish the industry would put this much thought into their revisions when upgrading. It's work like this that helps the aerospace industry as a whole, grow and and fly safer! Thanks Mike.

[@TrevorDennis100]

Amazing as always, and so detail orientated. Your engineering background is clear to see in your approach to parts like this. I spent my 40 year working life at Ford UK Product Development site, and most of that on a small design team producing specialist test instrumentation for the entire site. My last six years was in our calibration lab (when my close sight was not up to the fine work). We had two big Avery testing machines. One could do tension and compression, and the other torsion. They were old enough that they had large mechanical scales as opposed to electronics. We used them mainly for calibrating load cells, but we did stretch some 12mm bolts to failure just for fun, and I don't have the faintest memory of what force we needed. Thinking about it now (I retired in 2004) I absolutely loved my job, and while I didn't match your level of enthusiasm - heck, no one is going to manage that - I did get excited about many of the projects I was involved with. I'm 70 now, but engineering is my blood so I belong to the local Menz Shed plus I have a workshop in my garage, and I am busy in one or the other pretty much every day. You only get one life, so it would be a shame to waste any part of it.

[@timofeyserikof8397]

It is pleasant and surprising to observe how, by reasoning about what is happening and on the personal experience of the participant in the events, it is possible to determine the "old" generation of people raised during the Cold War. In each of your words I feel a great experience, a huge education and respect for the work that we did at every stage of our lives. In today's life, to my great regret, all this is absent. And even though the Iron Curtain separated us, your reasoning seems to me much closer than the reasoning of the young generation in my native country of Russia.

[@williambickerstaff8664]

Vortex shedding is what the slight twist avoided. Love your channel. You are one of the most well rounded people I have ever watched. Love your work and your effort to get folks into GA. You are a family man with a passion for all things physical science. Love it. Keep up the great work.

[@pistoninthewind]

This may sound simple but this is the highlight of my week. I wish he did the news and weather!!

[@kartpw]

the weather is weather and the news really sucks right now so I would rather mike do mike! Back to work!!

[@northcascade1]

Being a retired aero space engineer your videos make me want to replay my life designing component parts for military aircraft. Seeing an aircraft that I had contributed to its completion and success has to be one of the most rewarding things in a persons working life. Thank you for your videos I look forward to each new episode. I just hope I live long enough to see Scrappy fly.

[@dtobler4638]

Watching this makes me think of Mike as a modern day Howard Hughes. Love the contribution to aviation!!!

[@steveb7310]

IOXAN PHENOMENON just thinking the same thing

[@tomhutchins1046]

i actually think he is sharper than HH . Spruce goose just for starters? defiantly appears to be more stable.

[@robertsever7900]

Mike an old recovery/rigger trick. Lay a wet towel over your cable. When it fails it will just fall to the ground. The towel absorbs all the kinetic energy from the cable. I’ve seen it work many times recovering military vehicles. That’s my bizarre tip of the day! Love your stuff keep going! Can’t wait to hear that beast of a motor roar to life!!

[@MikePatey]

Robert Sever 👍🤠 yea I do that and blankets or jackets when towing a buddy from the mud to arch that energy with straps but I didn’t want to miss a slow motion brake on video so I left it wild 😜

[@wmitty1004]

Love the engineering advancements- almost as much as your enthusiasm. Can't wait for flight!

[@Trevor_Austin]

Mike - You need to teach children. Your knowledge and enthusiasm is infectious. If kids don’t learn to appreciate the benefit of learning from you then nothing will. The world will benefit from a new generation of engineers, a generation of people who use their brains and hands to build things.

[@shallowabyss515]

Loving the long in depth videos about the smallest of things. The more content the better!!!!

[@goatflieg]

As a fellow homebuilder, one of the fun things about watching your videos is that as you begin to describe your concept, my analytical mind starts formulating questions... and as the video progresses you answer each and every one of my questions. Now that's cool! Loved this one. We are witnessing brilliance... and learning from it.

[@danielmoss2394]

Love this. Full use of my Aerospace Engineering degree. Totally geeked out!

[@stuheinecke8457]

Mike, your videos are my favorite on KZbin. Scrappy will be a work of art. Can't wait to see it finished and flying.

[@nutsmcflurry3737]

Lovely bit of engineering, thoroughly thought out and executed. So what did the computer say what the fail point and pressure would be?

[@fredstork]

"Probably completely un-necessary" sure - but completely super interesting. To see and get this level of detail explained the way you do it is a true gift to the community. One day, one of us will remember and apply one of things you said and a life will be saved. For the rest of us we just learnt something - but a day when you learn something is a good day! Thanks Mike!

[@CherokeesJeepLife]

Mike, I love your enthusiasm, your imagination, and your passion. You are truly a inspiration.

[@user-wq7jj9zr9r]

Can you say "Kid in a candy store?" I just sit here smiling at your enthusiasm.

[@sansdecorum4600]

As an old electro-mechanical designer, that was seriously cool. I knew carbon fiber was the stuff, but had no real appreciation as to how ridiculously strong it really is. I really liked your approach to bonding and securing the assembly and the attention to detail on the finished part, micro twist included, was over the moon. Well done, sir.

[@Mountain_Man]

I sure hope this one is longer! I can't wait to see Scrappy flying around the salt lake area

[@nicholaschriss1706]

I am not a pilot nor am I an engineer however I love the details and thought that you guys put into your project "Scrappy". I was following the Drayco vids and was heartbroken for you all, your efforts are inspiring and you have a OCD like quest for maximum performance/weight saving goals that warm my soul. You guys share your knowledge for others to benefit which is the purpose of you vids. Unfortunatley for me the only flying I do has nothing to do with getting in a plane. Keep up your great work Patey family and associates.

[@ozziepilot2899]

Well I was working and saw this premier notice, time to drop everything and watch !

[@Ah00ker]

Great googlilly mooglilly the thought to put the twist in to prevent oscillation is friggin smart. I bow down to thy engineering prowess!

[@zenmark42]

oh man I never knew the trick to put a twist in the strap when you're tying something down... gonna have to try that when I'm hauling my kayak!

[@antibrevity]

I know that these videos can take a lot of time from your project, Mike, but thank you SO MUCH for putting them out. Many of us would watch 5 hours a day if we could. BREAKING things takes it to a whole different level and I really loved seeing how you mated the SS ends onto the carbon fibers rods, as mating CF to metal or vice-versa is the biggest non-monetary challenge to using this material ;). It appears that you could get away with a smaller-diameter carbon fiber rod/tube while still achieving the strength that you need, but this part is no more weight than the old one and gives you enough radius to form an airfoil shape, so it's definitely the right choice.

[@Mrcaffinebean]

Yes the humming on ratchet straps! As soon as you mentioned you twisted it I knew that was why.

[@ronjohnson9507]

Just a heads up the dot will cite you for twisted straps

[@Mrcaffinebean]

ron Johnson really? Why? I don’t see house it would compromise strength. Might even increase it since harmonic resonance can leave to other failures.

[@ronjohnson9507]

@@cmmartti yes sir

[@ronjohnson9507]

@@Mrcaffinebean according to the dot twisting straps weakens them ask any truckdriver

[@jamesbarber2882]

Ever noticed the helix around tall chimney stacks ?You have just worked it out your self .!

[@CS_247]

On rod rigging on boats, it's always the clevis that goes first, then the bolts shear, and then lastly the rod stretches to fail. Unless the rod has damage on it like a corrosion or impact mark. Then that is where it goes. If you hit it with something by accident, replace it immediately... Love what you are doing, Mike. Keep up the great work!

[@briandallas8090]

"I talk a lot" he says.... NO, my wife talks a lot, you, my friend speak and speak well. I could listen to you all day!

[@petecooper3701]

Hi Mike, I've just read some of the brilliant comments below, and, like you and everyone else I'm blown away. There is, however, one important point to remember when removing material to increase the number of fixings : maximum material condition. Sadly this design factor has,over the years, led to many failures and fatalities when ignored. The "strengthening" of rotor hubs on helicopters by drilling out existing holes and counterbores and fitting larger cap bolts is a classic example, you've only got to look at history. I can't wait for your next amazing footage. Love all you do. Keep safe all my friends. Pete on the Isle of Wight.

[@gc1914]

That was intense I'm sitting in my recliner and my toes are curled stressed to the max good job

[@longshot7601]

You're able to stay in your recliner. About halfway through a Patey video I'm fidgeting about needing a creative release. After this comment I'll be hitting the 3D printer...and up til 3AM. Patey videos should be prescribed to people trying to quit caffine.

[@dadillen5902]

Nothing get the blood flowing like a good toe curler. Of any kind.😉😁

[@keithcress1335]

Mike, I'm an EE and have watched several thousand videos. I have never learned more things in a single video than I did on this one. FANTASTIC! Oh, and I guessed the threads would go first. HAHAHA.. Please keep up your wonderful lessons.

[@daverobinsonTnT]

Brilliant as ever 😎 Just loving this “Scrappy” journey, makes design engineering very awesome & exciting 👍 Cheers Mike 💪

[@caveman999666]

I absolutely love you take all these part and re-engineer them and improve the performance massively yet still manage to keep it visually beautiful, such passion in the craft really does show for some awesome results and make for one of the best engineers I've ever seen

[@DillysADV]

When you were testing the carbon, I was thinking the jig was going to go first. There was some very visible deflection in the main beam.

[@aserta]

Carbon structures are insanely strong. We've actually used them in architecture to secure so called "impossible" knots. Where conventional design would not allow it. Tho, you really have to know how to use it. It's not something you just get from a store and bind with random resin and work it. Mike here is clearly an expert, this actually exceeded my expectations in terms of what a small component can do.

[@christoph72761]

73 minutes, 10k views 1k likes, and ZERO dislikes. That says it all. Again, THANK YOU SIR for providing your viewers with expert information in an easy to understand format. Always a pleasure to watch!

[@savage6394]

You need to invest in a better Blast Shield, Mike! Lol. I don’t know if a Lifetime table is rated for that kind of work. 😂 I would have loved to work at your Engineering firm. Not only do you seem like a good boss to have but I really love your thought process.

[@jaysom2240]

This freaking guy is amazing. I could watch him do this all day. Explains everything.

[@indyjons321]

Watching the test rig arc as it got to around 3000 lbs....... that was crazy

[@MrWATCHthisWAY]

Excellent content a usual Mr. Mike. We all can’t wait for Scrappy’s build completion but the build videos keep us motivated and intrigued. Your methods are going to change R&D business models around the world. Well at least in the US! Be safe.

[@TerryPullen]

The twist to eliminate wiggle is brilliant. I wonder if the plane will be so stiff that it will be uncomfortable to fly.

[@inmyopinion6836]

My Dad was a design tech at TI in Dallas in the 60s. He did design testing just like you describe . My favorite thing he told me was " Do something , even if it's wrong . You'll know one more way it will fail . Eliminate them all and your done . " The F 111 fighter was retired , but , the guidance system on the cruise missile , works !

[@AMorgan57]

Having been a trucker, I appreciate the strap fluttering issue :) Didn't know the solution :(

[@rbk3463]

I had some stuff tied down on my boat and was noticing a lot of that fluttering Thanks to this video I know to twist the tie down around. It's amazing what you can learn on them innernets.

[@Cowracer67]

Had a buddy with straps that supported the bimini top on his boat. I noticed that he never set the top up until he stopped to anchor up, then took it down to go motoring around. I asked him why he did that, and he said the straps fluttering in the wind drove him nuts, and he tried everything to get them to stop. I said "not everything" and unhooked each one, put a half-rotation in them and hooked them back up. I said try that. He could not believe that something so simple would stop a major irritation to him.

[@TobbeArnesson]

Mike is so far ahead in this game that we normal people devours his crumbles. Yes, I too took away the "twist the straps" bit as a game changer from this video. 😁

[@carts4138]

Fix is simple - carbon fibre straps :)

[@michiganmoto7687]

I honestly thought you were going to have a jig fixture failure before the carbon fiber failed, which may have been possible had the rivets not let go. Absolutely incredible! I used solid carbon fiber rod for handle pins when making custom knives and was never able to break one during stress testing. The chemical bond of the resin would always let go from the steel tang during impacts and shear loading but the pins remained intact. Thanks for the destructive demonstration. Lol.

[@aerojune]

Hold everything .......... Mike gonna post hahahahahaaha

[@Pascal_Robert--Rc_Creations]

I was thinking exactly that before you post the comment😅

[@sgttackleberry1098]

I literally stopped what I was doing at work for the last video...

[@pumarolz]

Mike you have a really contagious case of happiness and excitement, and that's only through the vid can't imagine in person

[@adamjacobs8606]

"Completely unnecessary" is kinda the theme for the whole of Scrappy...

[@MikePatey]

Adam Jacobs yep 🤠, just for the fun. Let’s see what we can do 🤠

[@sldghamr58]

"Completely Unnecessary" is really the story of Scrappy.

[@cologneleadershipstudios117]

@@sldghamr58 but on your death bed when you recall what you did in your life: What will come up in what sequence? I've done a lot of "unnecessary" things in my life that have - oh - so enriched my life... Gotta love the unnecessary... ;-)

[@tomhutchins1046]

@@cologneleadershipstudios117 Simpler than that. You will regret the things you did not do far more than the things you did. There is a wide range included in that statement. Source an experienced counselor working with older people.

[@josiatokirina1788]

Precision, Perfection, Performance! Watching and learning with joy and eagerness. Can't get enough of your excellent videos. You never talk too much. You show us the details and explain the reasoning behind what you build. Thank You Mike for giving us your time. You are great teacher.

[@oof9077]

If he starts posting every Saturday night he will bankrupt snl

[@DSteyr]

Well SpaceX postponed Demo 2 to watch Mike's last Scrappy video.

[@mojo6524]

SNL has sucked since the original cast left

[@MrGaryGG48]

@@DSteyr Elon Musk wanted another opinion and Mike was the guy to go to so.... "that weather just doesn't look too good. I'm gonna wait for a little while... I sure hope that Patey guy doesn't take too long!" ;^)

[@captainc424]

We could only hope.

[@helicart]

who watches whiney marxist millennials who never made anything helpful to others

[@davidrobins4025]

Mike, I so enjoy the work you are doing and sharing with us in the process. You produced the evidence to demonstrate how much stronger the carbon fiber really is. Again, thank you.

[@rafal5863]

Put some kevlar in those rods. So that even if they crack they will hold on. It is not only strength but toughness. Imagine a bird strike rather than tensile failure.

[@sysfx]

Same thinking here.

[@casychapin4647]

Chicken cannon test?

[@justachipn3039]

Could only feel sorry for the bird !!!

[@davidclemens1921]

I don't think any whole birds will arrive back there considering the huge prop in the front.

[@AltMarc]

He could go even lighter using pre-stretched Dynema fibers in epoxy...

[@davide.burden2043]

I'll be darned! I drove over-the-road trucks for years, and some of those years were pulling Flat Bed Trailers. [Skateboards.] An old trucker saw me tying down my load one evening, and told me to put one twist in my straps and they would not loosen up. Before, I had almost always had to stop after a while and re-tighten my straps, however, after following his advice and putting one twist in each strap, I never again had a strap loosen up going down the road. I passed this tip on to a lot of other drivers over the years, and most of them asked me why it worked. I had to tell them just like he told me, that; "I didn't really know _why_ it works, I just know that it works". Now, years later, after being retired, I'm sitting at home watching this brilliant man build an airplane, and as he is showing us his upgrades to his tail section wires, he explains to me the *_Why_* of why putting one twist in the strap causes the strap to not loosen up as it travels down the road. The twist causes the wind to push on both sides of the twist equally, thereby preventing the vibration that occurs when the strap is straight. Who would have ever thought that Mike would answer an old question of mine after all these years, by beefing up his tail section wires on *Scrappy* ? I learn something new every time I watch one of Mike's videos, but this is a special kind of learning since it answered a question I never thought I would know the answer to. *Thank You so much @Mike Patey.*

[@michaelkleist9482]

The twist to cancel any vibration was necessary.. before building it over afterwards 👍I would of paid for the ambulance call if I could of been able to drop my physics book on the floor behind you ...lmaooooo 👍👍👍

[@kadmow]

Check the flutter velocity vs rigidity for that CF spar - very unlikely to flutter at any speed a Cub can fly at. lol... But anything to stop a "Galloping spar"-Tacoma Narrows Joke - is nice to have. Maybe if it were to get to high subsonic speeds (compressibility factors) - significant issue - but then the Fairing foil is all wrong..

[@painlesstom]

I never expected the carbon to go that high, very impressive. Testing to destruction is the best way to develop great designs. Love your videos, please never stop!

[@patrickblissmusic]

Wife: "What are you watching? It's been like half an hour." Me: "I'm watching Mike Patey stretch stuff."

[@beerbuffet1222]

Yea - i’ll drink to that

[@1950harleycharley]

Looking forward to the day when Scrappy flies....but it is ablast to watch every video you put up...Love the way you make complex ideas easy to understand for those of us who are not tech savvy! Thanks! God bless and keep you and the Mrs safe!!!

[@joshhalasz2477]

Let’s see how much money he puts into “scrappy” today 😂

[@ShErLoCkHolMez87]

Josh Halasz hey you would too if you could

[@aserta]

Thing is, you can't get jealous or mad at him or his brother for these things, since they broke their backs for this work. It's not like other "people" we know of that took everything from their parents and scammed left and right to get in places where they didn't deserve to be.

[@rustyduktape]

Those struts are gorgeous!!! Really cool about the twist, seen that a million times on straps, never thought of it applied this way though. You're so relatable and a great presenter Mike, thanks for explaining this stuff in ways us simpletons can understand, hahaha. Can't wait for more!

[@davidsmith5982]

Great video. Loved the 40/60 split screen as you explained the finished product and at the same time shared, video onlly, some of the actual build. Just one of the many small details that made this so easy to view. Thanks! Back to work !

[@chunkadaryl]

Used to work in a Q.C. Lab years ago pulling tensile test. Loved the way you did it.

[@aserta]

Mike is the kind of guy that, you shut up and listen when he talks, because Jesus, the things his head has stored inside. The level of expertise and knowledge he has is magnitudes above others. Amazing fellow, one of which we'd need more.

[@christianschoenfeld1825]

Mike - your channel is a great inspiration for showing quality work and going out and building things. Thanks for the great content, and enthusiasm for engineering!

[@JonathanRinny]

Mike if you're reading this I want you to know that I get very inspired by what you do and how exited you are while doing it. I am a 4th generation acrobat and when it comes to our equipment, we have to design and build our own stuff. I have learned a lot from you and am applying all this new knowledge on my current and future projects! thank you so much for being awesome! I hope to meet you one day so we can geek out about building things!

[@imontime77]

His level of finishing details is inspiring. Proud of every single part. Best way to fly.

[@carljansevanrensburg2440]

Such a joy seeing a genius at work. You are truly amazing and always enthusiastic about everything you do.

[@balmernicholas]

I cannot really express how interesting and fascinating that I found this episode to be. I am very unlikely to ever make anything other than a scale model of an aircraft, but these programs are really inspirational. Thank you so much for making them.

[@Ferocious_Imbecile]

That was beautiful. I get so pessimistic and worried watching the news and then I get a new Mike Patey video and now I'm all optimistic and upbeat.

[@ofipete]

You’re detail-obsessed, a perfectionist. Being German I understand you well. You’ve got my admiration.

[@alexvonbosse5090]

Most interesting video on stress analysis and comparison of a conventional to a carbon fiber component! Thanks for sharing!

[@joelbosshoss9029]

I'm 4:38 Min In. Thank you for taking the time to show us how much fun it is to work on a project thats gonna fly. God Speed.

[@duanestace6303]

Awesome video Mike. Love the way you introduce complex Engineering in a relatable way.

[@AustinChopra]

Mike I love how your channel has gone from a amazing build log of draco to an awesome channel about engineering and including us on the design and thought process of scrappy. Also when I saw the airfoil for the tension rods I thought it would have been cool if you had made it so it worked as a speed break, probably would have required a ton of engineering and made the tail kind of heavy.

[@Timbo428CJ]

Never leave any stone unturned Mike. Great work !

[@christopherplantijn3798]

Mike, I feel that you are introducing us to a whole new world of drafting, building, and engineering.Thank you for your insights

[@samuelkemp4557]

This is so cool! I used to test carbon fiber coupons to failure on an instron load frame for undergraduate research. I took for granted the machine that automatically applies force and measures strain and displacement. It was much nicer than measuring it by hand lol. When the carbon failed, it would explode and send shrapnel everywhere.

[@Popsaircraftdetail]

I absolutely love the beam sanding block mike. I’ve been painting all my life in way shape or form that is awesome

[@eastcoastandy2905]

In marine masts Monel or Inconel rivets are used on the bracing (or rigging). My first thought of failure was shear at those rivet holes and they are impossible to inspect later... Stronger rivets, not more holes. Twisting against flutter, a good idea, the humming would drive you nuts if the bracing didn't break . Good job Mike, much enjoyed !

[@SmittySmithsonite]

Lighter, AND 5x stronger - that's a win! Carbon fiber is pretty amazing stuff! Fascinating tests, Mike - I appreciate you sharing that with us!! 👍🍻

[@michaelalphin]

Draco was definitely the most badass plane ive ever seen without a doubt! How could anything ever be better? This just may be!! This is just awesome i cant wait to see it finished and flying

[@TreeCutterDoug]

Your skill and attention to detail is next level.

[@TairnKA]

Testing to Failure; Being at a wing fatigue test, a video doesn't come close to the anticipation, seeing the effects of a wing bending does to the fuselage and finally the BOOM! is astonishing. ;-)

[@shermanj1]

I love the ladders in the back ground. This is great stuff, always excited for the new installment.

[@572hemi2]

Mike, we met at Reno last year, so sorry about Draco, but glad everyone was okay. Scrapy is looking great, and I love your "over-kill" on the engineering! Keep up the great work, hope to see you at Reno 2020!!!

[@anthonymuro1642]

I can’t believe how much that steel beam was bowing off the floor from that little carbon part! That was a great test Mike, shows how strong carbon really is if used correctly. Awesome video as always👍🏻

[@kinsleykhoo48]

I absolutely cant wait for your videos to load up and love coming along for the ride on this scrappy build - its so much fun!!! THIS video was so cool and the end product you've designed and built looks way cool with a practicality over engineered you never have to worry about it - surely thats a win win for sure!!

[@robertbradford2734]

Wow this is off the charts as the build! The engineering prototyping and testing...👌

[@simonsmith9363]

Great work Mark, one of the best episodes yet. I got it wrong on the fail test, I thought it would be the bolt stretching and breaking. I also never thought your test bed would flex so much!!

[@g0fvt]

Funny, I have no connection to aircraft design but was wondering about vortex shedding, by the end of the video you had addressed that too. Great demonstration and thought processes, I feel like I always learn something useful and new watching your videos.

[@N.Biddle]

This is what I love to see. Thank you for putting more technical content with a real explanation of your engineering.

[@laz288]

Came years ago for the cool planes but now I learn so much about engineering. So cool you take the time to really explain things.

[@dwaynehunt1111]

I cannot get away from Mike's videos due to an engineering and aviation background! I feel Mike is contributing to aviation safety in the biggest way. This video was particularly interesting...and what about Mike's enthusiasm??? As I am typing, the number of comments: 1,015. That speaks volumes for 4 days! Mike, I am impressed! Can you run this carbon fibre test through FEA? That would be really interesting to see the accuracy comparison.

[@iwayini]

Great video! I decided to test my wife's patience watching your video vs mowing the grass. The test failed miserably and this was before she piled on more pressure. In the dog box! Thank you from Bedford, UK.

[@shakilsayed490]

You remind me of a time when I used to experiment and eventually built our own production plant. I love your videos. Keep them coming. I'm sure they inspire many.

[@its4michael]

Awesome...love the engineering and testing. For the record I guestimated 600 lbs on the wire but only because I've played with them a bit too. My guess on the carbon was way off, I only imagined about 3 - 4 X the wire. Carbon is so incredible! Fun stuff. Thanks for the content!!!

[@euj7588]

Great explanation of the why’s and what if’s. Love the engineering involved!

[@snaprollinpitts]

I nailed it, I knew that the bracket would brake. great video Mike

[@_UnclePatriot]

Thank You for the time and energy it takes to put out these videos! The fact that you are willing to share this wealth of knowledge is priceless!!!! Again, Thank You!