Final assembly of the turbine rotating assembly. Now we are basically finished assembling the core, and ready to attach all the external accessories that make it an engine.
That's a real good way to put it. Without specialized engineers, we would never have been able to design marvels like the Trent 1000's or GEnx's we have today. Without experinced mechanics like Jay, nobody would buy one of these engines because no specialized engineer would be able to work as efficiently as a mechanic who knows the entire engine inside and out like the back of his hand. One is not better than the other. They are equally necessary for success.
What I find impressive, that there are so many parts. It is something magic, to put all this parts together again. It seems for me, that the turbine is in the best hands at the best technician on the entire planet. AgentJayz know exactly what he does if he is rebuilding a looking pin. The experience he has, isnt comparable to an engeneer who only build things in a computer and never take his "own hands" to build a turbine. T(h)rust him! :)
Trade offs. The engineer knows much much more behind the theory of heat engines and is in a better position to innovate; the technician or machinist brings the design to life. Both need each other.
It sort of scared me when you were putting on that washer and the snap ring with a chance of them falling into the engine. I guess you're more confident than me. I would cover the turbine with shop towels. I really do appreciate you posting the vids, you are an excellent instructor. Many Thanks
The radius is less than that, plus you forgat the relativistic correction factor, where as we approach a statistically significant percentage of the speed of light, the passage of time appears to slow. So as the unbalance force increases, this increase starts to reverse. The physical correction is made with a dab of dark matter paint. The density of the pigment is so high it traps light, therefore reversing the reversing effect. It's heavy, though... we hold the brush with a crane.
The design is such that the pin holes are revealed one at a time. I guess I should have made that more clear. I put one in because there was supposed to be one in and there wasn't. I thought I made that clear. They are not drive cogs, they are locking pin slots. I thought I made that clear.
Can't wait to see it run! and once again thanks for your hard work putting these videos together! I am very intrigued by them and jealous of your job......I think I missed my calling! Have a nice weekend Sir!
The GE overhaul manual allows the locking pin to be placed anywhere without the need for rebalancing the assembly. ...So that's what we're going to go with, OK?
The locking pin is so small and so close to the Shaft Center line, wouldn't be much of a worry, it's not critical enough to rebalance and who knows where the pin will end up in the final assembly...
I argumenting with his EXPERIENCE. AgentJayz say in some videos, that there ARE WEAK points, there and here and it should be fixed by engeneers. An engeneer who never take his own hands on a turbine, will never realize that "weakeness" AND THIS is my comment about! I have more respect from technicians like AgentJayz, then from engeneers.
I've been trying to put one out every week for over a year now... I don't know what got into me with this project, but after 7 videos in 6 days ( did you see the others?), I need a break. The engine is in the boat, and tomorrow morning we're going to run it.
Actually, engineers do field work every once in a while. This was what my internship was about. The engineer SHOULD know just as much, or more, than the technician regarding a certain part (material strength, thermodynamic behavior, etc.) because he/she was involved in the design process. An engineer who sits in an office ALL the time is what we call a college professor (even though these guys do valuable research). Contrast that with a Professional Engineer.
Dear Agent Jay Z- I am very interested in turbines that use boundary layer cooling. I think it would be a brilliant topic for "a closer look". perhaps you would be interested to talk about how they work, why they are needed, where the air comes from that feeds through the blades, and some examples of engines that use this facinating technology. thanks!
I don't understand why there was no locking pin installed when you disassembled this engine, or why you would put one back when it wasn't there in the first place, and more than that, why would you not just put two pins across from each other for balance? The nut looked to have an even number of drive cogs which would make it super simple to use two pins. Don't get me wrong, I know how to read the manual, but I was just looking for a little more detail on the subject.
If the radius is closer to .5 in.=.0127m (guessing by the size of Jay's monster mechanic hands)and the mass about 1.4 grams by mass=density x volume (estimating the dimensions of the lock pin and knowing the density of stainless 304 to be 7860 kg/m^3) you'll get about 130N which is 23lb, which, in respect to the amount of weight and length of the blades+disks there are on a turbine shaft and rotor, is pretty darn near negligible. Plus I addded aberration of Uranus and other quantum perturbations
I have two mental images of you making the locking pins. One, is your handy precision working with the lathe. And, two, snipping some wire ( rods?) and demurring the edges. Anything close?😂.
@@AgentJayZ oops. I need to proofread better. I meant de-burring. Like if you snipped a wire (strong enough to work as a lock pin) then needed to grind, file or buff off the distortion (burr) at the pinched end.
I guess you're not getting it. Only a soon-to-be unemployed idiot would use a piece of wire that he filed down for a retaining pin in a million dollar turboshaft engine. Actually, he would never get the chance, because skilled people who demand quality can usually smell such stupidity a mile off. Does that make it more clear?
I read all the comments and I did not see anybody else asking the question. Why were those parts that you said could go together with two different choices 2:35 , why weren't they marked by the factory if balance is so important? Factory error, not that important...?
HEY JAY, GREAT VIDS!!!!! I love them all!!!!!What's driving me nuts is your repeated attempts to convey the importance of balance in these turbines -- 26k RPM? that's extremely fast. It seems to me that degl1234 has a point... it seems exaggerated......but still..... Thank you for teaching me so much about turbines, and I look forward to many more lessons.
The GE overhaul manual allows the locking pin to be placed anywhere without the need for rebalancing the assembly. ...So that's what we're going to go with, OK?
![โกหกเธอทั้งนั้น (Pinocchio) - SERIOUS BACON [Official MV]](http://i.ytimg.com/vi/P1HhTYwrR5A/mqdefault.jpg)
That's a real good way to put it. Without specialized engineers, we would never have been able to design marvels like the Trent 1000's or GEnx's we have today. Without experinced mechanics like Jay, nobody would buy one of these engines because no specialized engineer would be able to work as efficiently as a mechanic who knows the entire engine inside and out like the back of his hand. One is not better than the other. They are equally necessary for success.
What I find impressive, that there are so many parts. It is something magic, to put all this parts together again. It seems for me, that the turbine is in the best hands at the best technician on the entire planet. AgentJayz know exactly what he does if he is rebuilding a looking pin. The experience he has, isnt comparable to an engeneer who only build things in a computer and never take his "own hands" to build a turbine. T(h)rust him! :)
Those turbines come together like a work of art.
Trade offs. The engineer knows much much more behind the theory of heat engines and is in a better position to innovate; the technician or machinist brings the design to life. Both need each other.
It sort of scared me when you were putting on that washer and the snap ring with a chance of them falling into the engine. I guess you're more confident than me. I would cover the turbine with shop towels. I really do appreciate you posting the vids, you are an excellent instructor. Many Thanks
Nothing left over = top job JZ
Nothing dropped, nothing lost, and nothing left over :) haha!
Wow, fun to watch. These are so interesting.
The radius is less than that, plus you forgat the relativistic correction factor, where as we approach a statistically significant percentage of the speed of light, the passage of time appears to slow. So as the unbalance force increases, this increase starts to reverse. The physical correction is made with a dab of dark matter paint. The density of the pigment is so high it traps light, therefore reversing the reversing effect.
It's heavy, though... we hold the brush with a crane.
AgentJayZ, you are GREAT!
I am REALLY enjoying your videos, THANK YOU for ALL of your efforts!
The design is such that the pin holes are revealed one at a time.
I guess I should have made that more clear.
I put one in because there was supposed to be one in and there wasn't. I thought I made that clear.
They are not drive cogs, they are locking pin slots. I thought I made that clear.
Can't wait to see it run! and once again thanks for your hard work putting these videos together! I am very intrigued by them and jealous of your job......I think I missed my calling! Have a nice weekend Sir!
The GE overhaul manual allows the locking pin to be placed anywhere without the need for rebalancing the assembly.
...So that's what we're going to go with, OK?
The locking pin is so small and so close to the Shaft Center line, wouldn't be much of a worry, it's not critical enough to rebalance and who knows where the pin will end up in the final assembly...
I argumenting with his EXPERIENCE.
AgentJayz say in some videos, that there ARE WEAK points, there and here and it should be fixed by engeneers. An engeneer who never take his own hands on a turbine, will never realize that "weakeness" AND THIS is my comment about! I have more respect from technicians like AgentJayz, then from engeneers.
I like this comment. I officially endorse the modempanther !
Vaseline, the miracle substance to build good engines :p
Just reviewed this one on my PC. Previously viewed it on my TV with a TH-cam App! It won't let you leave comments or 'likes'!
Good idea. i did the same thing with all the cases.
Oh, well... I meant modernpanther. My fonts are too small!
I've been trying to put one out every week for over a year now...
I don't know what got into me with this project, but after 7 videos in 6 days ( did you see the others?), I need a break.
The engine is in the boat, and tomorrow morning we're going to run it.
I will admire you....
Actually, engineers do field work every once in a while. This was what my internship was about. The engineer SHOULD know just as much, or more, than the technician regarding a certain part (material strength, thermodynamic behavior, etc.) because he/she was involved in the design process. An engineer who sits in an office ALL the time is what we call a college professor (even though these guys do valuable research). Contrast that with a Professional Engineer.
HAHA, good one Jay!
Leftovers are sloppy indeed! :)
I would LOVE to see the power free turbine gear box and exhaust nozzle details.
Does the service manual say how the snap ring goes in? With the flat side and round side of the ring. Love your videos. Keep up the good work.
Dear Agent Jay Z- I am very interested in turbines that use boundary layer cooling. I think it would be a brilliant topic for "a closer look". perhaps you would be interested to talk about how they work, why they are needed, where the air comes from that feeds through the blades, and some examples of engines that use this facinating technology. thanks!
But it would be funny.. i like your thinking FSB
this may also be becouse the radius of the inbalance is smaller close to the shaft then at the fan
I don't understand why there was no locking pin installed when you disassembled this engine,
or why you would put one back when it wasn't there in the first place, and more than that, why would you not just put two pins across from each other for balance? The nut looked to have an even number of drive cogs which would make it super simple to use two pins. Don't get me wrong, I know how to read the manual, but I was just looking for a little more detail on the subject.
It seems OK since the pin is so close to the center of rotation.
If the radius is closer to .5 in.=.0127m (guessing by the size of Jay's monster mechanic hands)and the mass about 1.4 grams by mass=density x volume (estimating the dimensions of the lock pin and knowing the density of stainless 304 to be 7860 kg/m^3) you'll get about 130N which is 23lb, which, in respect to the amount of weight and length of the blades+disks there are on a turbine shaft and rotor, is pretty darn near negligible. Plus I addded aberration of Uranus and other quantum perturbations
I am sorry, my mistake, I meant second stage turbine disk,
I have two mental images of you making the locking pins. One, is your handy precision working with the lathe. And, two, snipping some wire ( rods?) and demurring the edges. Anything close?😂.
demurring?
Engine parts are not fabricated locally.
@@AgentJayZ oops. I need to proofread better. I meant de-burring. Like if you snipped a wire (strong enough to work as a lock pin) then needed to grind, file or buff off the distortion (burr) at the pinched end.
I guess you're not getting it. Only a soon-to-be unemployed idiot would use a piece of wire that he filed down for a retaining pin in a million dollar turboshaft engine. Actually, he would never get the chance, because skilled people who demand quality can usually smell such stupidity a mile off.
Does that make it more clear?
There is no fan on this engine. I thought I made that clear.
So did you create a match mark for future techs?
Why do you suppose that originally their wasn't a locking pin? Isn't it essential to prevent a possible loosening? Thanks
How much does a typical service cost ?
and the hands of one!
imagine accidentaly dropping the pin or circlip inside right at the end! ARGH
The steel pin can't be 5 grams. A cm long and 2mm thick = 2.5 grams. And it looks like the r is around ½inch.
What does that mean?
I read all the comments and I did not see anybody else asking the question. Why were those parts that you said could go together with two different choices 2:35 , why weren't they marked by the factory if balance is so important? Factory error, not that important...?
HEY JAY, GREAT VIDS!!!!! I love them all!!!!!What's driving me nuts is your repeated attempts to convey the importance of balance in these turbines -- 26k RPM? that's extremely fast. It seems to me that degl1234 has a point... it seems exaggerated......but still..... Thank you for teaching me so much about turbines, and I look forward to many more lessons.
Maybe being too close to the center, the pin is unable to change the balance. Am I right?
there's no such thing as a typical service.
You need to buy my PT6 engine stand from me, get it out of my garage!
Wes Gates I'll reimburse you for shipping it here. So it'll cost you nothing to see it go to a good home.
It would be an evil trick to sneak over to somebody working on an engine and put an extra nut on the table.....
I knew a guy that would take the extra left over parts and throw them over his shoulder( ya know like salt) good thing he didn't work on turbines
still waiting for my video today? why no video Jay?..........ok, maybe i'm spoiled, 5 days 5 videos :-)
50% chance to get it wrong... how catastrophic is the wrong answer? ;) :P
The GE overhaul manual allows the locking pin to be placed anywhere without the need for rebalancing the assembly.
...So that's what we're going to go with, OK?