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
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.
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.
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.
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.
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.
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.
♥.♥ 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.
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.
…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.
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.
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.
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.
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
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
@@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.
@@AB-80X Carl, thanks for injecting some adult comment. I accidentally ended up here during another search. Since when are TH-cam videos being rated for Oscar nomination?
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 .
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...
@@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.
![อาจารย์ยอด : ลุงแว่วเล่าเรื่องผี [ผี]](http://i.ytimg.com/vi/Fd2Qsy4dqpM/mqdefault.jpg)
Too much music.
MUSIC IS UNNECSSARY !
Great work. All great stuff was always made with a craftsman, hammer, anvil, heat, patience and a commitment for perfection.
Remove the music! You can barely hear what they're saying.
Enjoyed this immensely. Precision, tradition, human touch. To spec, in spec, cleanliness every step.
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
I love how the final inspection process shows a large man smashing the prop with a mallet.
gyff jogofl haha haha. I was thinking the same. Geezus man.
Goes to show though, anyone can make shit but it takes a leftie to make it perfect!
He was smashing the shit out of that thing!
Got to give props to them
lmao
Yeah the sound guy went bonkers with this music. Geeeze dude we're you working out during editing.
I think you meant "were" not "we're". Dummy
It's a heavy metal concert not an info video.
Yeah, the music sucks...wrecks an otherwise good video.
What a process, had no idea. Very cool to see each step. Nice video Yamaha!
Very well presented 10 out of 10
Love the music ! Totally complimented the video.
the foundry process was more efficient than i expected
After we spend hours grinding,polishing,measuring,we beat it with a hammer. Who produced this video? Was proof of quality production your goal???
Hard to understand because of the awfull noisy background sound.
Wow PROPS to whoever made this video
Lorddd I'm Exhausted. Just by seeing the Process
Cool Presentation. Good Workmanship
Love the music! Thank you.
You must be f**king joking.
Music is way too loud.
Never been aware of this process, and I’ve worked in the trade for decades. Thanks for sharing. Really interesting! 😎🏖🌴☀️🇦🇺
Really amazing to watch,thanks,just better if you killed the background noise.
Props to you Yamaha.
I liked this. Thanks!
They got me for 20 seconds their obnoxious noise had me get the hell out!
Good video but the music is too loud and drounds out most of the dialog.
I had to stop the video to check if the music isnt playing on the different opened site.
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.
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.
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.
5:10
ah yes. hammer it right into spec to yamaha standards.
With a BFH
At least they are honest. It's an art form . not science.
Can you do one without the music guys, as others have said really distracting
I love to hear the sound of manufacturing. But it's a nice vid!
Why is there a Jet-li fighting theme on the foreground?
"Ya kickin ass while ya mekin propz brv"?
Thanks to Yamaha for my F80BETL. The best outboard in the world!!!!!
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.
Nice video thanks !
Great video
Very interesting video. Makes you appreciate why they are so expensive. Lower the music volume by 50%
No.
It's a pretty cheap process overall. You would be astounded if you know what the markup was.
the music could be a bit LOUDER
What’s the music they used it’s fire
Yamaha is the best at everything they fabricate.
3:38 great way to seal a sandblaster box. how does that guy see through all that painter's tape?
I just ordered my Talon SS prop ;)
Tried to watch it, but couldn't because of the music.
30-012023.Do you recyle any used shell matterale???No cobalt on the frist coat?No laser check or controle on end product??
background noise is way too loud to hear what your sayin'
It's 2018. Could you not steamline the process so I can buy a standard propeller for a F40 for
Please turn up the music, i could almost hear what they were saying.
Andri Andrason
ROCK ON MAN! TALKING SUCKS!
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
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.
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.
Jose finishes it off with a mallet?
Do you balance the props?
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.
and i thought props were just that...props, thanks for the insight!
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.
music is essential part .. ultimately it is originally sound company.. look at logo....
♥.♥
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.
I like the music. Keeps the whole thing moving. Great piece.
Interesting process. I curious if the props need to be balanced and if yes than how is that done?
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.
Bigger hammer of course!
What is the song?
Respect !👀👍👍👍
Yamaha 😎
Mercury can show you the best way to make a prop
waste of time because of the music
desert1cop ya lets cry about the music. Haa
Yea lets,because it BLOWS
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
Im from Indonesia,like Yamaha 60hp?
tay nghề giỏi quá .
1:00 melted out the ceramic?? Pretty sure they melted out the wax.
Donde están los modelos de propelles
Para evinrude etec
Woah, way more complicated than I thought. Thought they were my old recycled Pepsi Cans.
…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.
Super
How long until this is replaced with 3d printing? Saw Blue Origins printing titanium alloy rocket jets the other day. Amazing
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.
This process is dirt cheap, so why change? They make a lot on propellers.
Intresting video! buut skip the music,,please,,
What city is
Namber one yamaha
A boat without a prop is an island, that's what I tell my customers.
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.
I'd say it's more lie a raft.
Hacen propelles solo para yamaha turbo hacia para todos los
Outboards
Sorry I must have missed something but is my propeller made of aluminium coated wax?!
Burns is a good dude. While I was at Yamaha, it was widely acknowledged, that Mercury builds a better prop than Yamaha.
Not lately. Merc props have been plagued with casting defects in the hub bore.
Now I know that whenever I buy a prop from Yamaha, it will be beaten hard by a sledgehammer before they send it
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.
no balancing of the propeller ?
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.
QC.. “hits prop with hammer repeatedly”
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
Hit it with a big hammer to get it into shape standards, awesome
I like the information presented in this video, but the background music was annoying.
Very nice😚🥰😅😊
Who in North America is listening to this 80's heavy metal cruising on a boat??? It's 2019 not 1918!
no mention of balance
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
Carl Spackler thats why i use yamaha engines but powertech props
@@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.
@@AB-80X Carl, thanks for injecting some adult comment. I accidentally ended up here during another search. Since when are TH-cam videos being rated for Oscar nomination?
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 .
Info A+, Music D-
Mercury hace para todas las marcas de
Motores
Nothing says precision like a big guy whacking the propeller with a massive hammer!
Did he say they melted out the ceramic?
Roger Hupp they melt it out of the ceramic. (The wax)
Great music, makes it very exciting!
Lose the music
Wellding props
I see that I am not the only one that thinks the music is annoying.
Background music was a bit too loud. I could still hear what was best said but just barely. Other than that, COOL
This is why mercury is superior
Great information. The constant background music was a major distraction.
Whats the difference between a flour and a powder? thanks a million.
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...
@@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.