Props | How They're Made

[@alvinsterling]

Yes, "A little less Cowbell please"...... But if you're serious about learning, there's a lot of incredible detailed information in this video for anyone who has done a quick study in the "lost wax process." Do that, then come back here and see the "specific mold process" for their props. And the comment about "...large man and a mallet...", paraphrasing, that's exactly what you'll see in a foundry operation, prior to any machine-finishing. You have to "get close" before you can be plus or minus a few thousandths. To straighten our cast bronze plaques, we slam them onto a cement floor or metal table. It's not pretty, scares everyone not wearing hearing protection, but then, that's how it's done. Actually a very good video...... thanks' Yamaha YPPI

[@desert1cop]

MUSIC IS UNNECSSARY !

[@teambridgebsc691]

Enjoyed this immensely. Precision, tradition, human touch. To spec, in spec, cleanliness every step.

[@smartypants5036]

Great work. All great stuff was always made with a craftsman, hammer, anvil, heat, patience and a commitment for perfection.

[@daniellehirschausen8908]

Very well presented 10 out of 10

[@mcplutt]

Too much music.

[@garycooper3021]

Love the music ! Totally complimented the video.

[@kollak01]

5:10 ah yes. hammer it right into spec to yamaha standards.

[@rooftopvoter3015]

With a BFH

[@afaketwo]

At least they are honest. It's an art form . not science.

[@AngryMushroom91]

Thanks to Yamaha for my F80BETL. The best outboard in the world!!!!!

[@petersrightbut8297]

After we spend hours grinding,polishing,measuring,we beat it with a hammer. Who produced this video? Was proof of quality production your goal???

[@kevinp6025]

Wow PROPS to whoever made this video

[@AlexGarcia-ew2fv]

Lorddd I'm Exhausted. Just by seeing the Process

[@kentyler966]

Nice explanation of the evaporative pattern process. I think that they occasionally confuse the term die and mold but all in all it’s a nice piece and helps customers understand why that shiny new prop is so expensive.

[@ardvarkkkkk1]

Ken Tyler We used to make the props for the Miss Budweiser hydroplane. Milled completely out of a solid block of titanium. Took almost three days at $90 per hour plus several thousand dollars for material. A bit spendy.

[@AB-80X]

No. This is a pretty cheap way to make props. It is also not a very precise way. Don't get me wrong, Mercury and OMC is just as guilty of this markup as Yamaha. But look at what the price of a Turbo prop is, and they are in fact great props.

[@gyffjogofl7676]

I love how the final inspection process shows a large man smashing the prop with a mallet.

[@bikemancody2752]

gyff jogofl haha haha. I was thinking the same. Geezus man.

[@Godshole]

Goes to show though, anyone can make shit but it takes a leftie to make it perfect!

[@Bassmaster1256]

He was smashing the shit out of that thing!

[@KHos73]

Got to give props to them

[@allseriousness]

lmao

[@holgermeier8244]

Hard to understand because of the awfull noisy background sound.

[@dinoilcagnolino3213]

It's a heavy metal concert not an info video.

[@foxtrap8826]

Yeah, the music sucks...wrecks an otherwise good video.

[@josepeixoto3384]

Really amazing to watch,thanks,just better if you killed the background noise.

[@saminsiddiquee2059]

Cool Presentation. Good Workmanship

[@ViperSRTnACR]

Good video but the music is too loud and drounds out most of the dialog.

[@marcbee1234]

They got me for 20 seconds their obnoxious noise had me get the hell out!

[@thefpvlife7785]

Yeah the sound guy went bonkers with this music. Geeeze dude we're you working out during editing.

[@derek2791]

I think you meant "were" not "we're". Dummy

[@AngelZLopez]

Yamaha is the best at everything they fabricate.

[@ShortFlic]

Very interesting video. Makes you appreciate why they are so expensive. Lower the music volume by 50%

[@AB-80X]

No. It's a pretty cheap process overall. You would be astounded if you know what the markup was.

[@Artines999]

♥.♥ I really like the Lost Wax method for casting: wax pattern→ceramic slurry coating→silica sand or zirconium coating→drying→dewaxing(by heating)→pouring molten metal.

[@FHCOutdoors]

What a process, had no idea. Very cool to see each step. Nice video Yamaha!

[@CyberMacGyver]

the foundry process was more efficient than i expected

[@carmelpule6954]

A propeller is a complex device whose complexity in the surrounding working medium is hardly respected hy many people. If the propeller accelerated very quickly then the medium around it cannot cope and it is left behind to cause cavitation, At speed the forward speed acts as a primary pump to the high pressure areas and so the blades can cope with higher pressure differences. I prefer propellers where the pitch at the hub is slightly less than the pitch at the outer radius of the blade, This is due to the fact that at slow speed the angle of attack of the blade with respect to the water is so high and at that zone the blade acts more like a paddle wheel rather than an airfoil section. Also it would bite a bit better at slower takeoff speed. Normally I arrange for the inner hub pitch to be just right for normal cruising where the inner part of the blade is not working but simply going through the fluid without drag, but it would be working at slower speeds and it would behave better when the craft is moving slower . There is so much complexity going on around those blades, where many people misunderstand the difference between cavitation and aeration . Also I find that the tips of the blades are important for efficiency, IN the older days the blades where shaped more like clover leaves with the trailing edge raking in . In a propeller and an aircraft wing , I prefer the outer tips to have both the leading edge and the trailing edge raking back. When young I did notice that very bird and every fish have their fins with the leading and trailing edge raking back. When one comes to think of it the pressure differences around the tips would mean that if the fluid is trying to escape from the high pressure zone to the lower one, then it would be logical to move the "wing, blade outwards so to stop the fluid escaping. Nature had done it all before and evolution of birds and fish.............. has done it all before us............ and one can appreciate why high speed propellers look like the wings of a diving eagle or a hawk and looking at the tail of a whale , an Orca and a dolphin one can see how much there is to learn from the shape of their wing tips and fin tips. It has been there for a million years and it is such a pity that many people did not notice it and ventured to design their own............ not getting it so perfect as nature did.

[@marky5493]

and i thought props were just that...props, thanks for the insight!

[@liborslefr3369]

I had to stop the video to check if the music isnt playing on the different opened site.

[@alanmccabe8009]

Can you do one without the music guys, as others have said really distracting

[@crazyoldhippieguy]

30-012023.Do you recyle any used shell matterale???No cobalt on the frist coat?No laser check or controle on end product??

[@tigertrap2269]

Not quite sure why they keep calling the wax mold process a wax die. Molding is injecting a liquid material into a hollow cavity. A die is a forming process with a solid material.

[@gafasd]

It's 2018. Could you not steamline the process so I can buy a standard propeller for a F40 for

[@legendfpv]

Love the music! Thank you.

[@gerry343]

You must be f**king joking.

[@jacksbackable]

Never been aware of this process, and I’ve worked in the trade for decades. Thanks for sharing. Really interesting! 😎🏖🌴☀️🇦🇺

[@mlenz2553]

Music is way too loud.

[@kenberscheit480]

background noise is way too loud to hear what your sayin'

[@cyrex686]

Lots of good information, interesting to see investment casting done on an industrial scale. I know a lot of people that don't work in the industry will be shocked seeing a guy with a hammer, but that is a highly skilled job and that kind of hand work is why they are able to make them with casting rather than expensive 5 axis cnc. If they didn't have that guy, those props would look good, but not proform nearly as well. A skilled guy can tune the prop for specific applications.

[@kalemercer7053]

3:38 great way to seal a sandblaster box. how does that guy see through all that painter's tape?

[@aportilla007]

I just ordered my Talon SS prop ;)

[@BenjiTheGamer617]

What’s the music they used it’s fire

[@fubartotale3389]

A mold could be built that would produce one piece finished wax props, it would surely save you money over building them piecemeal over the long run.

[@trevinpendry136]

Props to you Yamaha.

[@fartamplifer]

Remove the music! You can barely hear what they're saying.

[@andriandrason1318]

Please turn up the music, i could almost hear what they were saying.

[@aguyandhiscomputer]

Andri Andrason ROCK ON MAN! TALKING SUCKS!

[@robertkarlstrom6276]

Sorry I must have missed something but is my propeller made of aluminium coated wax?!

[@Ram-Bam-Buli]

the music could be a bit LOUDER

[@ferrosjewellers4558]

Do you balance the props?

[@jbj27406]

Tried to watch it, but couldn't because of the music.

[@Deerslyr81]

1:00 melted out the ceramic?? Pretty sure they melted out the wax.

[@thurmanhumphreys7604]

Great video

[@xBeN152x]

They are great props the problem is the sws2 sds has been a nightmare back order for almost a year only to slowly trickle in.

[@stefantwotimes]

Intresting video! buut skip the music,,please,,

[@dustyflair]

Jose finishes it off with a mallet?

[@nolanwalker1134]

Agreed the music is just to much for the video . It tends to drown out the information in the video . Not that I'm even going to try to learn how to make a prop from this video . But never the less still think it's a good educational video and would like to see more like it but with music that's not so over powering .

[@stuartpeck26]

Background music was a bit too loud. I could still hear what was best said but just barely. Other than that, COOL

[@oetken007]

I love to hear the sound of manufacturing. But it's a nice vid!

[@rodolfobarros5795]

Donde están los modelos de propelles Para evinrude etec

[@rajmulay4062]

music is essential part .. ultimately it is originally sound company.. look at logo....

[@borkalvlog6325]

Im from Indonesia,like Yamaha 60hp?

[@Buccaneer9]

Burns is a good dude. While I was at Yamaha, it was widely acknowledged, that Mercury builds a better prop than Yamaha.

[@rockerneck]

Not lately. Merc props have been plagued with casting defects in the hub bore.

[@latemcire8387]

Interesting process. I curious if the props need to be balanced and if yes than how is that done?

[@AB-80X]

They don't really need a balance, but that's not the same as they will not benefit from it. There's a tolerance of course, but it's not precision balanced. If you want your prop to really perform, you need to get it labbed. Than means the following. Geometric correction of blades so each blade has the same pitch, rake, camber, and upping. Diameter adjustment. Thinning of blades so that each blade has the same thickness. Dynamic balancing. Finishing (satin or gloss polish) None of these things are done to these box stock props. You need a proper prop shop like BBlades etc. if you want a precision propeller.

[@guygaspar5828]

Bigger hammer of course!

[@desert1cop]

waste of time because of the music

[@joeyvieira9618]

desert1cop ya lets cry about the music. Haa

[@desert1cop]

Yea lets,because it BLOWS

[@bravoboy1234]

They edited the loud music in so you couldn't hear the guy out back belting the snot out of it with a hammer. lol

[@DirtyMutt.]

i like the music but its way too loud, i have to turn on captions just to be able to understand whats going on. editor mustve been working out or something lmao

[@Kaitlyn11411]

What is the song?

[@tolissailor]

no balancing of the propeller ?

[@AB-80X]

They are run of the mill bone stock props. They are within spec, but far from precision balanced. If you want that, get a lab finished prop.

[@e4300]

OMG this music. Go to any meeting or presentation by a speaker, Do they play music while presenting/teaching/speaking. Does the CEO play music during his board meetings. NO

[@gerry343]

You're right, Mark, so many videos are made virtually unwatchable because some clown thought to inflict upon us his own taste in music.

[@1FishinAddict]

Great music, makes it very exciting!

[@rodolfobarros5795]

Hacen propelles solo para yamaha turbo hacia para todos los Outboards

[@XPLAlN]

…lost wax process, another example of ancient innovation. Most people these days literally believe that these kind of components cannot be made without CNC or 3d printing.

[@YouWillTunnel]

Why is there a Jet-li fighting theme on the foreground? "Ya kickin ass while ya mekin propz brv"?

[@edgardparra6497]

I like the information presented in this video, but the background music was annoying.

[@cschilli68]

How long until this is replaced with 3d printing? Saw Blue Origins printing titanium alloy rocket jets the other day. Amazing

[@RyTrapp0]

cschilli68 Possibly never - WAY too expensive compared to standard casting like this. Think of 3D printing as being equivalent to CNC machining - they're going to take similar amounts of time and are going to offer a similar level of cost effectiveness. This is why these processes will likely always remain in these prototyping, high precision low production, and complex one-off production niches and never really make it into mass production. By comparison, casting like this is absolutely dirt cheap. The most expensive part of most of these processes is the human labor.

[@AB-80X]

This process is dirt cheap, so why change? They make a lot on propellers.

[@dronexfun8469]

Whats the difference between a flour and a powder? thanks a million.

[@RyTrapp0]

DroneXFun A flower is just a fine powder(I couldn't tell you if there's an industry standard maximum granual size per definition or not, I'm sure there is). I used to run both a >1M pound dry mixing operation(can't remember the exact capacity) and a 24hr/6d twin screw extruder that ran the material that we produced(the main business was selling bulk custom formulated wood+plastic based dry material or pelletized material to other plastics manufacturers). This was all thermoplastics with a wood filler material(it was marketed as being "green" of course, but I don't know how adding wood to a product makes it 'better' for the environment...) and a bunch of other minor additives like antibacterials and the like to prevent the wood part from essentially rotting, talc(NASTY SHIT) to help the material flow, etc. Anyway, the wood always came in 'wood flour' form, and it was NASTY stuff to dump the 8ft tall bags of the stuff into the hoppers of the mixer. It REALLY caused the material to get stuck in hoppers, funnels, & transport tubing if there isn't enough talc to help it flow. In fact, it was normal for the 8ft bags of wood flour to stick and stop dumping into the hoppers, you could look up from the bottom into the bag(not advisable) and see all the material stuck together at the top, so you would have to poke it with a stick and smack it with a shovel just to get it falling again. Anyway, think of it like standard granulated sugar is typical of a powder while powdered sugar [ironically] is typical of a flour. Of course, wheat flour is representative of a flour too...

[@dronexfun8469]

@@RyTrapp0 Thanks a million for that awesome reply man. I wasn't sure if the difference between a flour and a powder were particle size or if a flour was describing something organic and a powder inorganic. Thanks again for answering my ridiculous question.

[@TomOHair]

I like the music. Keeps the whole thing moving. Great piece.

[@tylerw1418]

I liked this. Thanks!

[@AussieBruteUte]

Surprised they aren't CNC machined nowadays. Seems like a long labor intensive process for a simple object

[@AB-80X]

Do you have any idea how expensive CNC props are?

[@infernogaminga8390]

What city is

[@reeffreak]

no mention of balance

[@carlspackler4447]

Rally Tasker and if it looks off they just hit it with a hammer, I am a huge fan of Yamaha, i think they make the highest quality engines, and bikes, however this video is a bit disappointing

[@Joetrout]

Carl Spackler thats why i use yamaha engines but powertech props

[@AB-80X]

@@carlspackler4447 They are just like any other stock cast prop in terms of balance. They are within spec, but not precision balanced. Powertech, Turbo, Yamaha, Mercury, OMC, or the like, it does not matter. If you want a precision balanced propeller, you need to have that done, or purchase a CNC prop, or cast prop where it's part of the process. It's not very common for the latter as it's basically part of a blueprinting service.

[@alvinsterling]

@@AB-80X Carl, thanks for injecting some adult comment. I accidentally ended up here during another search. Since when are KZbin videos being rated for Oscar nomination?

[@charmio]

After working at VEEM engineering and seeing how they make their props, watching these guys use hammers and manualy grinding is pretty cringworthy. But I guess that's the difference between high volume manufacturing and high tolerance manufacturing.

[@VK9]

Ok Prop snob

[@charmio]

@@VK9 Meh, you do you bud. I know which one I'd rather have but I'm sure these do the job too. Also upon rereading my comment I realise there's an error. I meant "low tolerance".

[@rogerhupp3115]

Did he say they melted out the ceramic?

[@FLBill]

Roger Hupp they melt it out of the ceramic. (The wax)

[@nelsonfernandez5803]

People whine so much over small things like the music and all Come on people , stop you little cry babies , great video thank you

[@stumccabe]

Nothing says precision like a big guy whacking the propeller with a massive hammer!

[@hakankalakar3719]

Namber one yamaha

[@DrewBritten]

Great information. The constant background music was a major distraction.

[@KHos73]

Hit it with a big hammer to get it into shape standards, awesome

[@directsound]

Nice video thanks !

[@gmax876]

5:05 why not just modify mold so you don't have to put a sledgehammer to it.

[@RyTrapp0]

gmax876 The prop blades will never be consistent because they move during the cooling process. That's why they need adjusting. There's also a big difference between a sledge hammer and a wooden mallet

[@gmax876]

RyTrapp0 fair enough, that hammer still looks pretty serious though. I bet if they could control the properties of the metal they could calculate how the prop deforms as it cools.

[@thelyingscotsman7993]

Or just buy a CNC machine.

[@southjerseysound7340]

@@thelyingscotsman7993 do you realize what a billet of stainless that size would cost? It'd be 5 times the finished props cost for raw materials.

[@GabrielIvanflyesfishing]

Very nice😚🥰😅😊

[@wenbiaoliang]

will 3D printing help?

[@AB-80X]

No. Want real precision? CNC props. Stay on your feet when you see the price.

[@crazieN8]

Turn off the lame loud music and then professionally explain how this prop on my vessel is made, I didn't come close to watching the entire video

[@rodolfobarros5795]

Mercury hace para todas las marcas de Motores

[@windowsvistasuxalot]

Woah, way more complicated than I thought. Thought they were my old recycled Pepsi Cans.

[@fredrik1417]

Now I know that whenever I buy a prop from Yamaha, it will be beaten hard by a sledgehammer before they send it

[@AB-80X]

Here's the thing. Do you actually know anyone who actually truly cares about propellers and performance who choose Yamaha props? I mean the list of better manufactures is long. Mercury BBlades Hydromotive Hering Spinelli Turbo Powertech Just to name a few.

[@alexnet8943]

Respect !👀👍👍👍

[@darrenblattner2508]

A boat without a prop is an island, that's what I tell my customers.

[@falconskye4565]

Not one Island on this planet floats, they're all attached to the sea floor and all were/are made by a volcano. So a floating boat is not a island, it's just a boat without a propeller.

[@AB-80X]

I'd say it's more lie a raft.

[@thomasjefferson1457]

If they are still beating on their props with a hammer to finish them they are way behind the times. We are in the age of the CNC machine that can finish a part within a fraction of a thousands of an inch. Why would you continue to beat on something like that.

[@francoisbrand7464]

my thoughts exactly! id have thought there are @ least high precision moulds for this! well hats off to the skills but gee - a hammer?!!

[@deckmonkey1459]

Because they are millwrights. Millwrights beat on steel and call it craftsmanship. Without an electrician, their machines are just oily pieces of shit.

[@taxfreedollars]

Thomas Jefferson, It all comes down to production costs, after all how many times are these props going to be slammed into the boat ramp.

[@vrdengineering5204]

Look up the cost of a 14"x14"x12" piece of billet stainless that would be required as the initial stock to cut this size prop out of. Then add the 10 hours of machine time on a 5 axis VMC and compare that to the sales price of this prop. Consumers don't want to spend $3000 on a wear item. Till that day comes Juan will more than happily smash your prop into shape.

[@southjerseysound7340]

By all means go build your better prop that's going to cost 5grand to make lol. Seriously prop shops have been doing just fine with hammers and forms for years.

[@polygamous1]

If the casting n all other processes where spot on would u still need to hammer the props into shape? hammering them will never get them spot on

[@kustomweb]

Info A+, Music D-

[@randomdriver]

It is difficult to hear what they are saying, because of the angry loud music

[@AB-80X]

Don't worry. Most of it is of no importance.

[@rkaudioamplifierbord1148]

Super