BOLTR: SUMITOMO CYCLO GEARBOX | Zero Backlash!

Industrial lego from Japan! Cycloidal gearboxes have many advantages over traditional gears. Safety Squint T-Shirt! teespring.com/SafetySquints_us 🔥
Shop Gear www.etsy.com/ca/shop/AvEwerkz
SHITTY 3D PRINT MODEL ATTRIBUTION: www.thingiverse.com/thing:182...

[@TheSqeeek]

Good luck putting that one back together.

[@arduinoversusevil2025]

Judas!

[@PinkyTaDa]

thats what i was going to say

[@asbaDoce]

This might help. kzbin.info/www/bejne/mXKcd3eKiJuErbs

[@spikey2740]

Piece of cake. Just throw away the parts left over. It works every time.

[@MaxPower-yg1uf]

Roland Anderson no problem

[@hillearybrown7083]

So I am helping my granddaughter take some pictures of her science fair project. shes eight by the way, I move the camera in for a close up and the camera won't focus, so I say out loud Focus you Fuck!!!. I try to cover that up with her as best as I can. A while later she is with her mom and my granddaughter is taking some pictures, I hear her say "focus you fuck" it sounded so cute coming from her,but her mom was mad as a hornet, Thank you AVE for all of your input in English skills!! My granddaughter and I thank you, Greetings from New Mexico

[@1rstTry]

Hilleary Brown hello fellow New Mexican!

[@thedave7760]

Does she have a Dolly? Yes? Best gather all your Cockfords and put them in a safe place. At least she didn't start going on about releasing Schmo you would be in a whole different type of trouble then.

[@necroodin]

This is a thing...I've used it several times on the jobsite, and everyone just looks at me like I've lost my mind

[@simonhopkins3867]

little girls always reminds me of munchkins from the wizard of Oz. I mean the voice.

[@kirbytrooper]

10/10 story

[@dapete]

"these things are really expensive. I don't want to destroy this" [hard cut to hammering it apart] :^)

[@fhpr68]

lol, yeah he was beating that like a red headed stepchild.

[@stivi739]

I luv this guy lol

[@thedevilinthecircuit1414]

Your descriptive prose approaches that of the great Charles Dickinavise.

[@smallenginedude71]

you win the internet today sir, indeed you do

[@3dsman]

Brilliant! This might cum-i-late in Wads-worth though...

[@Ernesto11]

😆 well played and well worded

[@donpalmera]

Ate lunch at a sumitomo factory once. Glad the gearbox is better than the lunch.

[@HandToolRescue]

Why do the Japanese have the best company names? They always sound straight out of the future. Here I am with POWER FIST...

[@arduinoversusevil2025]

Oh, they have Power Fist, but you can't see it on account of the pixelation.

[@animalmother556x45]

AvE ..........bro.........fucking perfect

[@HandToolRescue]

Maybe Japanese genitals are just naturally pixelated? Will confirm tonight at my local izakya.

[@donpalmera]

Hand Tool Rescue iza-kyaaaaaa is what you say when you get punched in the balls.

[@ulle500]

Brand naming has made me go makita 18v, hilti is also talked all around as the best tools but the name also it half close to hilfe, not to mention how expensive they are. Brands like milwaukee I just think it's some rubbish american quality.

[@nickbrunelle2472]

Maybe if you took your shoes and pants off you could count to 20 and a half.

[@lawrencel3188]

ICWYDT

[@michaelweaver7037]

Nick Brunelle 🤣🤣🤣

[@christiangeiselmann]

👍

[@Fightre_Flighte]

>and a half

[@codycooper3980]

Loldamn

[@blaked7532]

dude, if you 3d print in ABS, you can vapor polish with a wee bit of acetone. to hell with 'a few hours of clean up' on a print.

[@MyLonewolf25]

Blake D also going slower with a finer tip

[@lukerediger8431]

MyLonewolf25 - too much information. Sick!

[@markkalsbeek5883]

In PLA it works with DCM.

[@SpookyFXdotCom]

"Long story short I don't want to destroy this...." WHAM - WHAM - WHAM - WHAM!!!! His timing is either comic genius or oblivious irony.

[@davidjones8942]

Since he manages it on almost every video he does, coincidental Irony theory is impossible...

[@ErosNicolau]

Two words of advice: 1. Very low backlash, agreed. But nobody will tell you the input is not linear to the output! If you plot a chart with the angles measured at the input and at the output, instead of a nice diagonal straight line, you'll get a wobbly diagonal, like a a sinusoidal turned loose on that line! Of course, the effect is tiny, but it's there, inherent in the math of the thing. And if you get the dual stage model, where you have a 1 : 10 coupled to a 1 : 9, for instance, you get the ripple of two asynchronous sinusoidal waves violating that diagonal line... 2. Even using two discs, you never completely mitigate the vibratory effect: you just lower it, by offsetting the direction of the vibration from a perpendicular to the rotational axis to a direction at an angle from it...

[@yeesenchai]

Eros Nicolau what if 3 are used to offset each other like a 3 rotor in a 20B rotary engine?

[@GUARDIAN1147]

Yee Sen Chai I would imagine it would just divide the vibration points (nodes?) Into thirds. Basically you can always cut something in half but you can never get rid of if.

[@godfreypoon5148]

Yee Sen Chai Oh I know what happens with that one, you get all the teeth sheared off your gears and your rear end will never be quite the same.

[@longstar550]

Eros Nicolau the winding were of the standard lotuseldeltoid type with two sperbing bearings to effectively reduce side fumbling...

[@NerdyFirefighter]

All cycloidal transmission devices have a torque ripple. This is caused by the near zero speed motion when the tooth of the rotor is in the pocket of the stator. The angluar motion switches from about the center of the rotor orbit to the center of the lobe. If you've ever used a spirograph you have felt this (it is uncomfortable when the rolling radius nears zero)

[@phildcrow]

Yet another thing I had no idea existed 13 minutes ago, and now I have to have one. Not for any REAL reason, just to have one in a box what for showing off to the ladies and such.

[@Luke-bz1ni]

I'm sure you could find a use for it. Get your lug nuts 43 times tighter than normal. Adjust the hot/cold water setting in your shower 43 times more precisely than ever before! You'll surely think of something.

[@TalynStormcrow]

Get it in your next robot wars crusher weapon?

[@smiley3012]

For real huh. I know what you mean.

[@vinzent1992]

Some weird ladies you've got hanging around.

[@sssbob]

Plus, they're shiny!

[@actorsnonactors]

You have the strongest banter game on the internet.

[@mtxrawkus]

Seriously. I have never seen better, especially if it's really all ad-lib, which I suspect it is.

[@Mikepower1978]

Eggzactly!

[@TalynStormcrow]

A lifetime of experience and too much time talking to yourself should do it.

[@eyellgeteven9928]

+lordvore Yep...I'm betting he turns the camera on, gets into it and forgets it's even there most of the time.

[@cobblerama]

"... sex wax also known as vienerschlieden" lmao!, This guy's got the gift!

[@NickFerry]

the output shaft with pins in a new direction to counteract the sister shaft - sounds good but wouldn't fit well on a DVD cover

[@tooshmart6669]

I used to work at Sumitomo in Chesapeake,VA building these exact same units. Our biggest units were almost 2 tons in weight.This is a very old model but love the vid

[@zoidsfan77]

Too Shmart That is a place I wouldn't mind seeing. Cyclos are lovely inside. We have replaced cyclos that I remembered weighing a little less that 4 tons. 6000 series 2 stage 600ish to 1 reduction with 15HP motor. I would have to check the nameplate, but that location sounds familiar.

[@-DIYPRO-]

I use these everyday as part of a bigger gear train assembly. Taken apart they are pretty mesmerizing to watch. Think of ones the size you can't even put your arms around, yea they are a pain to put back together. Unless you know to flip it upside down so output shaft is pointing up then pins go in last. Noway you are putting the pins in before the discs.

[@richardclark8520]

Have used these for nearly 40 years. They are dependable and virtually maintenance free. In fact I cannot ever remember any one of them going out. Which was aggravating because I have always wanted to tear one down. You did it for me. Thanks!

[@michietn5391]

8:42 Two contra-phase cycloidals, "minimize" (do not eliminate) vibration. The centrifuguals are neutralized, but since the cycloidals are separated along the main shaft, there is an oscillating torque applied to the angular momentum vector, which exerts a nutating pulse.

[@Novous]

this ^^^. It'll wobble back and forth, like a 4 cylinder opposed engine. Even though two cylinders are always going the same direction, they're offset so there's a moment (rotational force) developed.

[@Compasscard]

That's indeed an impressive piece of decently engineered mechanics. So compact !

[@andrewballard780]

You are an absolute LEGEND. Thank you so much for the most entertaining and informative videos on the internet. Keep up the good work - SIR.

[@the_cheese]

I learned more about how cycloidal gearsets work just now than I did in 10 years working in the bearing store. Wailing on the sub-assembly with the ball-bearings pressed in place and/or hammering the ball-bearings in place causes the balls to peen the races that will eventually lead to premature failure. This is why bearings (ball and roller) should always be pressed on, never hammered.

[@davidjones8942]

Tell that to the idiots who install U-joints with a hammer instead of a vise!!! 😖

[@Addictionplayer]

anybody else see other peoples videos and find yourself saying "FOCUS YOU FUCK!"?

[@scruffy6151]

Chris Moore yes i have i almost post that on a video i was watching but, I caught it before I post it

[@JensAndree]

Want to learn engineering AND watch the best comedian out there at the same time? Just watch any random AVE video and your wish is fulfilled! :D My only problem with uncle bumblefudge is that I've almost snapped a couple of ribs on more than a couple of occasions from laughing too hard, but then engineering isn't without dangers... Never change - always prevail/derail!

[@danyCD17]

Jens Andree that should be this channel's description

[@derbigpr500]

Except you don't actually learn any engineering, you learn the very basics of how certain tools function. Nowhere near enough math and physics here to learn anything remotely related to engineering. It's like saying you're learning science by watching discovery documentaries. :P

[@JensAndree]

Most of us here already know engineering and have 30-40 years experience so we are actually quite happy to just have the funny bits ;) If you want that type of "education" there's school and other ways - but they lack the spirit, humour and the di*k in the vise! :P

[@brenthooven888]

derbigpr500 I'm fairly certain the enjunearine is self study, so please take your time and no need for you to rush back at all...... jackass

[@redsquirrelftw]

Rockwell Automation actually innovated based on this, they placed the lunar wane shafts in such a way that side fumbling was completely eliminated. This was used in their highly successful Turbo Encabulator.

[@MDTShooting]

From an ASME welder and recovering CNC machinist, I just want to say that you and your channel are awesome! Even my wife wants to watch for the verbiage and laughs. Thank you sir.

[@Spooly_]

Clockwork Orange reference? Did not expect that. As usual, fascinating video.

[@cykoshroom23]

At the risk of sounding like an ignoramus, what was the Clockwork Orange reference?

[@Spooly_]

He used the slang like Viddy and ultra violence, which are from the book.

[@MisterBones2910]

To be fair, half the people who use 'ultra-violence' these days have never even seen the movie, let alone read the book.

[@gizmothewytchdoktor1049]

and there's a lot more to 'singing in the rain' that meets the eye! :-) what a glorious day!

[@romankolesnikov144]

Glad I wasn't the only one who caught that!

[@martinxXsuto]

The 2 rotor cyclo gearbox still has some vibration. It wants to turn with an axis perpendicular to the input and output. Because the rotors are hopping up and down 180° phase difference you get torque. You need 4 to balance completely (unless i've missed something). Set them up as a straight 4 engine. Likely overkill, but if you want insane high speed on that (i don't judge) you should cancel rotating oscillations aswell

[@AtlasReburdened]

You can just use three with the center one being twice the mass and offset from the outers, if we're picking at details.

[@martinxXsuto]

i stand corrected

[@Obbliteration]

That design will balance the free forces of even order but not the forces of uneven order. Regarding free torque it will depend completelly on the fixation point of the gearbox.

[@martinxXsuto]

TBH this idea came because it reminded me of an engine and as far as i know inline 4 doesn't have weighted rods to cancel torque (no engineering qualification whatsoever)

[@randyreddig5239]

I've rebuilt hundreds of those... (actually a larger version) Usually they tear up the bearing & input shaft, sometimes the output gets twisted off.... Very cool design..

[@ronroberts110]

Fun and educational video, thanks for this! The dual dynamic elements that are 180-degrees out of phase is the same reason the Wankel rotary engine has two rotors. They really wanted one giant rotor and a counterweight, but...

[@ViktarPisarchyk]

3:45 i fell out of my chair laughing

[@jamesallen4447]

I always feel smart watching these very interesting videos right up to the point where I realize I'm just an idiot.

[@VinnyMartello]

Ordered a hand tool rescue wrench for my Dad's Christmas present last week. Thank you so much for the publicity. It's going to be a cool gift.

[@forlorncornstalk]

That may be the coolest thing I've seen in like ten years.

[@DORUCOL]

Dude, this is one of the best videos I've ever watched on KZbin! You are hilarious! I mean that in the absolute best possible way too! The information is top notch. I learned and laughed while watching. It just doesn't get much better than that. I've subscribed and want to watch all of your content now, thanks! Keep up the great work!

[@radarmusen]

7:50 it looks like a caterpillar running around.

[@Aurelleah]

I work as a millwirgt and took one of these apart a month ago, before watching this video. Was very impressed. I thought they were like a normal gearbox but it's nothing like a normal gearbox. High torque capabilities and very reliable in terms of their operation, very rare to have one break unless the bearings break, or key strips out

[@flexhoncho6272]

Very cool! Thanks for taking stuff apart!

[@raymondmucklow3793]

I learned today.

[@mwildish]

Have a few beers. That usually reverses that problem.

[@TalynStormcrow]

It's the process of forgetting that's the best part.

[@EricIrwin]

The cycloidal drive is not going to be a good way to multiply torque, but I think you came to that conclusion already. I have tried to use it a couple times in my job, but since I really am trying to multiply torque instead of reduce speed, it just doesn't work. One of the main problems is that the pins that drive the output shaft are only partially engaged. It is kind of hard to explain, but if you look closely at your 3D printed parts and the contact between the pins and the 6 holes in the gear, you'll see that 1 or 2 are at a tangential point and another 1 or 2 just aren't at a good angle to drive which leaves you with just 1 or 2 pins to do the actual driving. As a speed reducer the cycloidal is amazing, but it just isn't a good idea for high load situations.

[@mprotec1]

Eric i read your hard to explained conclusion. Read more then you will understand more.... half a vessel makes damn lot of noise!

[@syxxphive126]

I use one in on a large shot blasting machine in a foundry. The table drive has one it, no idea the reduction, but it puts out enough torque from a 2hp motor to turn a 2000# stainless steel table with 4000lbs of castings on it. Works fantastic.

[@Valkyrie612]

I enjoyed the humor during this demonstration.

[@medicknights]

Super informational video!! thanks!!! Love the channel1

[@theironmechanic2797]

I made a video series on how i 3D printed the exact model AvE shows, and in the second video I show you how I designed my own. I also make other 3D printing and mechanical engineering projects. I made it for a medical exoskeleton for a student. Feel free to take a Look at it.

[@cyclopsdesigns9201]

what would the efficiency be of this gearbox compared to a standard spur gearbox ?

[@nathanielbryan1577]

Friction is most definitely higher, lots of sliding surfaces. There is also going to be a lot of pressure on the offset (Cycloidal?) bearing in the middle as it is pushing the gear around. I'm no expert but thats what it looks like to me.

[@MrNinjaman63]

Cyclops Designs it's the same or higher than spur gears

[@canadiannuclearman]

in a cheap design that i had seen a bike chain was used for the outside pins. as the lobe plates would move the roller on the bike chain would rotate reducing friction. the reducer was for a jack screw that would adjust a satalite dish. so operation was like 100 rpm for 2 minutes once a week ie low usage.

[@Mikepower1978]

Bloody super cheers AvE

[@purpleloco1]

you are an amazing individual. Love your videos.

[@houstonspeeds1610]

after u take apart something and see weak points, do u fix them or wait till they let the smoke out?? love this channel keep the knowledge pixies comin. how bout some more longer vids, like 20+ min. the longer the better for me, thanks for doin what u do

[@moggys13]

the raptor guns use planetary gears not cycloidal.... ask me how i know ( hint i fix them daily)

[@jasonsweet1868]

moggys13 how do you know

[@justdoi8909]

They need fixing every day? wow

[@firmansyafei7763]

My dad was a mechanic. He used to toys with machines like you do. He passed away two years ago and now i watch your channel imagining dad still around. Thans for a great channel

[@erickauppila7294]

That was simple but very cool great idea thanks

[@paulcoulter7181]

Now put it back together and see if it still works!

[@Kirillissimus]

Why wouldn't it? There is noto much inside them to really go wrong. It should still work. Not without a slight rattle of damaged bearings of course.

[@brendan454]

10:26 mmkayy

[@williamcox1176]

You have a way with word's. Love it.

[@LowQuatsSquats7529]

That is absolutely engenius, and the way you explained it just clicked. Fuck I LOVE this type of stuff.

[@VEC7ORlt]

Come to think about it - you can make a crappy one real fast using some laser cut steel parts and some bearings. Jeez man, why do you hit things with bearings on them with a hammer? That fucks them right up.

[@brodybishop7647]

VEC7ORlt He is using a brass hammer. It's softer than steel. Fucks the hammer right up not the bearing piece.

[@ChickenDeranged]

its a copper hammer vs a case hardened or at worst a mild steel shaft - the only thing getting fucked up is the copper hammer - pause vid at 7:34

[@TheOriginalEviltech]

And the bearings, which are not designed for axial loads.

[@allesklarklaus147]

You gotta get those bearings off there somehow and it doesn't work to well radially

[@danand6907]

Your right unless he was holding the bearing on the inner race. And not using the seperator and the rolling elements to take all the load

[@simonjelley]

Just don’t ask him to count to 21 ;)

[@jo2lovid]

AvE would need to call out the vice squad?

[@zvpunry1971]

I searched the comments for "21"... that is your 12th thumbs-up. I hope that you get exactly 9 more ;)

[@Silver_o]

A little more than socks Will have to come off. Please let him keep his pants up and not break out the vice.

[@mephInc]

I can only get to 20.5 ...I've heard some guys get to 29. Jerks

[@everything777]

He blatantly set himself up for that gag. Still funny though

[@realpatriot5896]

I watch a lot of your videos! I wanted to chime in on your mention about recentering an off center punch. I used to build oilfield pump packages (Skids) gear drive and belt drive. I also rebuilt Industrial Gearboxes. I routinely drilled and tapped new holes for the covers on the Gearboxes including the shaft covers with just a drill and tap. Normally they would be sent to a machine shop for that but I told them it was not necessary and I did many of them without issue. Anyway, I used to just move my punch over but I found the best way to do it is to put your punch in the off center hole you made lean it over at an angle and point it in the direction that you want to move your punch hole in and hit the punch until you think it's where you want it then stand it up at a 90° angle and hit the punch harder. If it's still off center just do it again until you get it where your want it then once you have it centered hit your punch hard enough that it makes the hole bigger than the off center one where the point of your punch is or many times I would just end up overtaking the original hole with the larger diameter of the new one. Works every time. Well, At least if you are experienced and have a good eye it does!

[@soosaisteven3984]

Thank you for such wonderful video. I learned a lot.

[@AgentOrangeX22]

Oh, the self healing mat didn't heal at all.

[@onradioactivewaves]

When did the big burn mark happen?

[@W00KIEW00K]

I absolutely love your "slang." I dont know if im watching for info or just to hear to talk.

[@wazlamish113]

Super cool! Thanks for the info I didn't know.

[@Factory400]

That is a super clever mechanism.....super cool to see the motion that is usually hidden in a case.

[@kilgoar]

horoshow vesh to viddie today me droogies

[@jeffrosburg9490]

You forgot to mention these bad boys can't be back driven!

[@jonanderson5137]

Jeff Rosburg Yep same as worms.

[@zoidsfan77]

This is not the case. We use them in large lifters. I have personally released the motor brake to have the load go down, thus turning the motor.

[@gonzalorosario1278]

I really love your video!!!

[@SouperAsH]

Listening to your narration never gets old.

[@standardaussie]

I need to stop following you I think. Just found a 70's metal body drill and called It sexy.

[@arose460]

its amazing that just about everything can be balanced but my sex life.

[@arose460]

Crystal Soulslayer perfection.

[@2.7petabytes]

A new post just in time for my birthday!!! What a present!

[@hyperforce]

your humor is ... awesome

[@MattsAwesomeStuff]

I've heard these called "Grinder Gears", for their characteristic crunching. Last I heard about them there was no known/non-toy purpose. I had no idea they existed as an industrial product.

[@arduinoversusevil2025]

This things are great! Tough as shit, until you forget that the puddle of oil they are swimming in doesn't lubricate the innards.

[@__WJK__]

Sort of reminds me of the internal workings of a Wankle/rotary engine.

[@michael-michaelmotorcycle]

I work in the largest aluminum can plant in the world. We have these gear boxes everywhere, mostly on conveyance. Some of them are easily pushing 30 years old in a can plant that is pushing 60 years old. Very reliable & indestructible - but AvE is correct, run it out of oil and the clipboard are bitching about downtime.

[@zoidsfan77]

Michael-Michael Motorcycle I have seen one go several hours without oil. Not totally dry, but the oil leaked out through a blown output seal (vertical drive). They sure let you know about it, they howl!

[@samc5898]

Where's the Patreon squad that saw this like a week ago

[@godfreypoon5148]

*we're

[@EMORY1977]

thank you. i never heard of such a thing.

[@NautilusGuitars]

I have entirely too many subscriptions, but your commentary forced my hand to click anyway. lol. I've been watching your videos here and there for a couple years anyway, so what the hell. Good content, world class commentary. A combo for the ages.

[@FriggOff361]

stop saying zoe. cool video even so

[@paulsallee4889]

You mean cool video even zoe!

[@manickn6819]

Great video. Never heard of those before so this was very useful for me.

[@jesseamaya4413]

Ran into this kind of drive on a winch about 6 months ago. Took awhile to figure out that its timed at 180 apart. Was mechanical beauty to watch it work.

[@mikehabas7871]

great video, enjoyed the energy

[@thomasphilyaw8593]

Sort of new to your channel, cross over from Matt's The Work Shop. I would give my left nuuut to live in your shop and feed off your knowledge and humor. You and your sidekick make my days beerable...keep it up

[@MaxPower-yg1uf]

Thats very neat.. good job dude, i dig your style 🖒

[@IbadassI]

I unexpectedly enjoyed this video.

[@plumtiger1]

this is a genius invention. love the design!

[@altaylor1980]

Thanks for this great vidjeo, never seen one before and run into a pair of them on a job, made me look like a fookin genius knowing what it was hehe 😉

[@ZylonFPV]

When you say "treat especial", it really makes it actually feel more special. It feels like you made the video just for me :P

[@hootinouts]

This mechanism is a slight variation on a trochoidal gear which is used mainly in hydraulic pumps and hydraulic motors. When I had to replace a seized spare tire winch in my old Dodge caravan I dissected the old one and at the heart of it was a trochoid reduction gear. I love this sort of stuff.

[@garysimmons1631]

Your innuendo cracks me up lol.

[@shahriyarmhm3424]

thank you for the effort

[@SWS-Sleep-Well-Stories]

Watched a lot of your videos, thanks for taking the time to edutain us, you sharp tongued grease fiend!

[@ph4t4lity06]

This guy's sense of humor is amazing subbing just for that lol

[@goldcountryruss7035]

My first experience with Sumitomo SM-Cyclo reducers was back in the late '70's with a 30 HP drive in a spiral blast freezer. In the '80-90's I sold them packaged together with the equally trick companion SM-Beier Variator to drive positive displacement Waukesha sanitary food grade pumps. Back then most of these pumps were driven by variable speed belt drives which required lots of maintenance. Sitting on the welding table a SM-Cyclo gearmotor that combined with a VFD will drive a prototype machine I am building. Another cool things are up to 86:1 reduction can be done in a single stage and the mechanical efficiency is unusually high.

[@jesusisalive3227]

That would make a good 4th axis for a cnc router. No backlash would be awesome! Man I can think of a hundred uses for that thing....one of the coolest things I've seen in a while.

[@gearhead1302]

I bought a cheapo "torque multiplier" from harbor freight years ago and this was how it functioned. Used it to crush the pinion sleeve on a 1971 firebird rear end.

[@deathsmile7839]

‘I don’t wanna destroy this’ *starts hammering the hell out of it*

[@peepopalaber]

I didn't knew about these. Nice!

[@davestambaugh7282]

I am retired now but I was involved with building gear boxes for the X axis drives on large five axis gantry mills. Cincinatti specs allowed four ten thousanths of an inch lost motion. Those gears were preloaded, very tight.

[@terrylagrave9771]

This guy cracks me up with his Minnesota accent and description of all sorts of goodies and gadgets, along with a little fu-k here and there, almost reminds me of Mark Twain with a twang

[@worstcrewchiefever6646]

best narration in the entire world wide interweb!

[@martindworak]

This dude is funnier than most of the dudes that get up on stage and make people laugh for a living.

[@shadow4evr]

Started watching to see the design. Kept watching because of the delivery. I can see myself starting to reference rippems and torqueues in the future. 😆

[@TheWardog1369]

Awesome class!

[@mountainman4410]

I have to stop and rewind your videos at least ten times! I laugh so hard at some of your descriptions, I miss half the video! 😂😂

[@deedsmillar6056]

its worse when you get reminded of something from another video and have to find it now!

[@jamest.5001]

out of all these. I like this. and the hydraulic motors and pumps and such best!!!