@weaver2109 I nearly lost half my right hand in the HP turbine of an RB211, and I should have known better. I escaped by about 1/4 of a second. Funny now, but only because I had that much time...
I am so impressed with your videos- fantastic information. I thought I read once, that earlier model turbojets discharged the lubricating oil into the exhaust. Is this true? Are planning to do a video on the lubrication system on a turbojet
@gig651 I know of no engine that uses a total-loss lube system. Maybe the expendable missle engines that are expected to last for about 20 minutes max, but I uderstood they use grease-lubed bearings and no oil at all.
The lube system in a turbine engine is a good idea, although there is nothing exotic there. Dry sump with synthetic oil sprayed on roller and ball bearings.
Hi Jay, regarding that radial drive shaft that runs from the centre bearing-the one you removed. It looks quite small in diameter considering the very important job it does especially on an aircraft engine. Have you ever heard of one snapping? Maybe another idea for a new video - you could show us failed components on jet engines and any weak spots?
@xxJohn1977xx Someone once wrote that anybody can make something strong, but an engineers job is to make things strong enough and as light as possible. This is a military fighter jet engine, so the shaft is the right size to do its job. As I mention below, I've never heard of a radial drive shaft breaking.
The only weak spots are the temperature limits of the materials from which the hot section components are made.
I've learned more about turbojet engines from watching your videos than a lifetime of reading and studying exploded view drawings. Keep up the good work, Jay.
@AgentJayZ just a small request, in your future video, could you please show us how a fuse pin looks like. There was one incident in the US where a 747 lost one of its engine due to severe vibration and the fuse pin broke...sadly, the 747 crashed into a building:( Many thanks in advance
@prandtl002 That sounds like an aircraft part, and I don't know much about it. Not tryinig to be evasive, but there is a definite separation between engine work and airframe work which employ different people in different fields.
We work on engines and have absolutley no experience with airframes.
For example we don't install the engines; that's the work of airframe guys, the AMTs and AMEs
Nice to see you guys doing another fight engine. Keepin' 'em in the air is what its all about. If you need parts, don't hesitate to contact me. We'll do whatever we can to help.
Love this guy and his shop. Did anyone notice the Yamaha snow machine on the shell behind him? All we need is some Moose head beer and we could have a great time here, eh?
@MoowChair One stage... like from a turbocharger? No, there are other people who have done a much better job at that than I could. Unfortunaltely I can't name them because there are so many, and I don't want to insult any one of them by leaving them off my list. You can find them. If they want to , they will find you...
Thanks for another great video. Pardon my ignorance but that drive system seems like a common point of failure. Loose that shaft or its gear train and the engine looses fuel, oil and electricity. Perhaps the applications this engine is used in all have two engines for redundancy perhaps.
@Systemrat2008 The radial drive shaft is the best solution so far that engineers have come up with to transmit power to the externally mounted accessories. All modern engines use this system.
All parts are important, but this one is critical; if it fails, the engine is dead and can not function no matter what.
That's why it is highly engineered, and exceptionally well-made of the finest materials available.
I am not aware of a radial drive shaft failing ever, since the beginning of jets.
I literally dream about working at your shop. I've been wrenching engines going on 8 years in the USAF, but if my plans fall through... You think I could work with you guys?
Hello AgentJayZ first of all thankyou for uploading very lovely engine. This question does not related to the engine in this clip. But may i ask...why did the Canadian Government canceled the avro arrow project ? It was such a beautiful fighter and very capable of world class.. it was a start of the Jet age and they are leading other country in jet fighter.. Keeping it would created a lot of jobs and profit from selling the plane for the economy.
Not really jet related... I'd noticed the sled up in the background in videos before but it stood out to me recently since my roommate just got a '84 Yamaha SS and that one looks just like it. Well, with an extra "R" on there...
I was lucky enough to see astronaut Chris Hadfield fly an F-86 on Canada Day, but I think it was a Sabre-5. It still had an Orenda type 14 engine, though.
I didn't know that the starter and accessories were connected to the high pressure system; I would have guessed the low-pressure system.
I don't expect that vintage or museum planes fly very much - how many flight hours does an engine like this get between overhauls?
@mobius1aic Good news: the J47 we tested in May is destined for a flying F-86F, and this engine is for a flying Canadair Sabre-6. They are replacement engines for airworthy aircraft already flying.
its amazing how much more mechanically complicated systems were on turbo machinery 70 years ago as compared today where electrical systems control most of everything.
@oFLYINGYETIo All modern airliner turbine engines use an auxiliary gearbox to drive a radial driveshaft to drive an accessory gearbox, with or without a transfer gearbox.
Everything is powered by the engines, and the radial driveshaft is how every engine gets power to its externally mounted accessories.
I think if you take a close look, the engines get mechanically more complicated with every generation.
@AgentJayZ Wow thats really interesting, Im only familiar with control systems on steam turbines used in the power industry where pretty much everything is electronically controlled now. Thanks for the reply!
Looking down through the strut, is that a worn groove on the side of the strut? Or is it made that way to prevent contact from the shaft and the strut?
@JetMech72 The front frame is sand-cast in aluminum alloy, which is a rather coarse procedure in terms of final dimensions. Any groove that looks like the shaft may have worn it would actually have been milled in during initial manufacturing of the part.
Very cool! What's this lovely machine in your hands for, overhaul time? Which of the 2 fighters is this piticular one from? Hope its destine to grace the skys again!
@mytmousemalibu Aircraft owner/collectors are very particular about keeping everything stock and numbers-matching. This is going into the aircraft it was originally builr for: a Canadair Sabre-6.
@AgentJayZ Excellent! Like you said, kinda neat, the J47 you did for the F-86 and now on the flipside the Sabre and the Orenda! Can't wait to see more of it and the enevitable running-in! The CF-100 is a cool old jet!
Wonder if this too has an overhung turbine(s)? Seems to be a trend in older turbojets, Our J30 is overhung, the J47 is....seem to recall more.
@saxonlight ... sigh... y'know... people who aren't jet-people... some of those people - have actually done it. They've been lucky, but I've heard of some who've lost fingers.
@AgentJayZ Kinda like people who try to look into the back end of a bazooka when its about to be fired. ;o) Thanks for yet another great informative video AJZ.
I love how you pointed out that you shouldn't stick your fingers in it.
weaver2109 1 day ago
@weaver2109 I nearly lost half my right hand in the HP turbine of an RB211, and I should have known better. I escaped by about 1/4 of a second. Funny now, but only because I had that much time...
AgentJayZ 1 day ago
Great videos, but I can figure out for myself not to stick fingers in there. :)
mpwelk 6 days ago
I am so impressed with your videos- fantastic information. I thought I read once, that earlier model turbojets discharged the lubricating oil into the exhaust. Is this true? Are planning to do a video on the lubrication system on a turbojet
gig651 1 month ago
@gig651 I know of no engine that uses a total-loss lube system. Maybe the expendable missle engines that are expected to last for about 20 minutes max, but I uderstood they use grease-lubed bearings and no oil at all.
The lube system in a turbine engine is a good idea, although there is nothing exotic there. Dry sump with synthetic oil sprayed on roller and ball bearings.
AgentJayZ 1 month ago
Hi Jay, regarding that radial drive shaft that runs from the centre bearing-the one you removed. It looks quite small in diameter considering the very important job it does especially on an aircraft engine. Have you ever heard of one snapping? Maybe another idea for a new video - you could show us failed components on jet engines and any weak spots?
Thanks, John
xxJohn1977xx 3 months ago
@xxJohn1977xx Someone once wrote that anybody can make something strong, but an engineers job is to make things strong enough and as light as possible. This is a military fighter jet engine, so the shaft is the right size to do its job. As I mention below, I've never heard of a radial drive shaft breaking.
The only weak spots are the temperature limits of the materials from which the hot section components are made.
Sir Frank himself recognized this in the 1930s.
AgentJayZ 3 months ago
@AgentJayZ Wouldn't it be small because it don't have to transfer power from a starter?
memadmax69 2 months ago
@memadmax69 yes, that is true...
AgentJayZ 2 months ago
I've learned more about turbojet engines from watching your videos than a lifetime of reading and studying exploded view drawings. Keep up the good work, Jay.
rickey5353 3 months ago 3
is it true that the speed of the tip of a compressor blade should not exceed the speed of sound while rotating?
prandtl002 3 months ago
@prandtl002 I think that's true, but as the air gets denser and hotter as it's compressed, the local speed of sound increases.
AgentJayZ 3 months ago
@AgentJayZ just a small request, in your future video, could you please show us how a fuse pin looks like. There was one incident in the US where a 747 lost one of its engine due to severe vibration and the fuse pin broke...sadly, the 747 crashed into a building:( Many thanks in advance
prandtl002 3 months ago
@prandtl002 That sounds like an aircraft part, and I don't know much about it. Not tryinig to be evasive, but there is a definite separation between engine work and airframe work which employ different people in different fields.
We work on engines and have absolutley no experience with airframes.
For example we don't install the engines; that's the work of airframe guys, the AMTs and AMEs
AgentJayZ 3 months ago
@AgentJayZ Thats fine...thanks anyways.
prandtl002 3 months ago
Another awesome video, thanks Jay!
tranceaddict704 3 months ago
Hey Jay,
Nice to see you guys doing another fight engine. Keepin' 'em in the air is what its all about. If you need parts, don't hesitate to contact me. We'll do whatever we can to help.
rbmartin1000 3 months ago
Jay, brilliant as usual!
Thanks,
Rich.
MrWarwick15 3 months ago
Love this guy and his shop. Did anyone notice the Yamaha snow machine on the shell behind him? All we need is some Moose head beer and we could have a great time here, eh?
Larrye123 3 months ago
@Larrye123 Yep, I'd seen it before but finally really gave it a good look this time. My roomate has a latter model 440 SS.
mwiz100 3 months ago
Great stuff Jay. Love your videos!
rc300xs 4 months ago
Any chance you could do a strip-down of the fuel pump? I'd be interested to see that. Thanks.
Spike0907 4 months ago
Have you built any simple (one stage?) jet engines yourself?
MoowChair 4 months ago
@MoowChair One stage... like from a turbocharger? No, there are other people who have done a much better job at that than I could. Unfortunaltely I can't name them because there are so many, and I don't want to insult any one of them by leaving them off my list. You can find them. If they want to , they will find you...
AgentJayZ 4 months ago
Thanks for another great video. Pardon my ignorance but that drive system seems like a common point of failure. Loose that shaft or its gear train and the engine looses fuel, oil and electricity. Perhaps the applications this engine is used in all have two engines for redundancy perhaps.
Systemrat2008 4 months ago
@Systemrat2008 The radial drive shaft is the best solution so far that engineers have come up with to transmit power to the externally mounted accessories. All modern engines use this system.
All parts are important, but this one is critical; if it fails, the engine is dead and can not function no matter what.
That's why it is highly engineered, and exceptionally well-made of the finest materials available.
I am not aware of a radial drive shaft failing ever, since the beginning of jets.
AgentJayZ 4 months ago
I literally dream about working at your shop. I've been wrenching engines going on 8 years in the USAF, but if my plans fall through... You think I could work with you guys?
Much love to you fellas in the north.
SmokedTails 4 months ago
Thanks for posting this stuff. You rule.
mooktank 4 months ago
Hello AgentJayZ first of all thankyou for uploading very lovely engine. This question does not related to the engine in this clip. But may i ask...why did the Canadian Government canceled the avro arrow project ? It was such a beautiful fighter and very capable of world class.. it was a start of the Jet age and they are leading other country in jet fighter.. Keeping it would created a lot of jobs and profit from selling the plane for the economy.
zero00tolerance 4 months ago
@zero00tolerance ... no comment.
AgentJayZ 4 months ago
I love my weekly dose of jet tech. Great vid and what a piece of history!
DavoCitizen 4 months ago
Another great vid Jay. Transfer gearbox No# 2 please. Cheers.
matube73 4 months ago
Videos like this make me sad knowing we lost the speed drive of the 50's for efficiency , and slow cheap planes. The supersonic age was glorious.
ASSEMblerEX 4 months ago
Not really jet related... I'd noticed the sled up in the background in videos before but it stood out to me recently since my roommate just got a '84 Yamaha SS and that one looks just like it. Well, with an extra "R" on there...
mwiz100 4 months ago
Looking forward to more videos of that wonderful engine.
hopper1 4 months ago
I was lucky enough to see astronaut Chris Hadfield fly an F-86 on Canada Day, but I think it was a Sabre-5. It still had an Orenda type 14 engine, though.
I didn't know that the starter and accessories were connected to the high pressure system; I would have guessed the low-pressure system.
I don't expect that vintage or museum planes fly very much - how many flight hours does an engine like this get between overhauls?
sharrynuk 4 months ago
Ridiculously interesting!
jaghatarmittjobb2 4 months ago
I love how much detail you are going into in these videos!
oisiaa 4 months ago
During his 28 years with Lockheed, Ga. I heard a lot of good things about Avro from my dad!
Thanks Z!
poppopscarvinshop 4 months ago 2
Yup, l like the emblem cover better myself XD
Great video as always. Where is this engine going after take down and rebuild? Please tell me an F-86 or Sabre restoration!
mobius1aic 4 months ago
@mobius1aic Good news: the J47 we tested in May is destined for a flying F-86F, and this engine is for a flying Canadair Sabre-6. They are replacement engines for airworthy aircraft already flying.
AgentJayZ 4 months ago
My radial drive shaft is only 6" long. Your's is way more impressive. :-) But it functions exactly the same. Bevel - radial - bevel - accessories.
Fierobsessed 4 months ago
its amazing how much more mechanically complicated systems were on turbo machinery 70 years ago as compared today where electrical systems control most of everything.
oFLYINGYETIo 4 months ago
@oFLYINGYETIo All modern airliner turbine engines use an auxiliary gearbox to drive a radial driveshaft to drive an accessory gearbox, with or without a transfer gearbox.
Everything is powered by the engines, and the radial driveshaft is how every engine gets power to its externally mounted accessories.
I think if you take a close look, the engines get mechanically more complicated with every generation.
AgentJayZ 4 months ago
@AgentJayZ Wow thats really interesting, Im only familiar with control systems on steam turbines used in the power industry where pretty much everything is electronically controlled now. Thanks for the reply!
oFLYINGYETIo 4 months ago
chop-chop-chop-chop xD
degl1234 4 months ago
I wonder where I can find technical details about modern jet engines?
It's thx to you I'm interested in it =)
degl1234 4 months ago
Watching this I find myself wondering something: How much cursing happens when someone discovers there's an extra piece left over?
DarkAngelGuyver 4 months ago
@DarkAngelGuyver I don't know where you work, but we don't have leftover pieces :)
AgentJayZ 4 months ago
Looking down through the strut, is that a worn groove on the side of the strut? Or is it made that way to prevent contact from the shaft and the strut?
JetMech72 4 months ago
@JetMech72 The front frame is sand-cast in aluminum alloy, which is a rather coarse procedure in terms of final dimensions. Any groove that looks like the shaft may have worn it would actually have been milled in during initial manufacturing of the part.
AgentJayZ 4 months ago
Very cool! What's this lovely machine in your hands for, overhaul time? Which of the 2 fighters is this piticular one from? Hope its destine to grace the skys again!
mytmousemalibu 4 months ago
@mytmousemalibu Aircraft owner/collectors are very particular about keeping everything stock and numbers-matching. This is going into the aircraft it was originally builr for: a Canadair Sabre-6.
AgentJayZ 4 months ago
@AgentJayZ Excellent! Like you said, kinda neat, the J47 you did for the F-86 and now on the flipside the Sabre and the Orenda! Can't wait to see more of it and the enevitable running-in! The CF-100 is a cool old jet!
Wonder if this too has an overhung turbine(s)? Seems to be a trend in older turbojets, Our J30 is overhung, the J47 is....seem to recall more.
mytmousemalibu 4 months ago
You must realy like your job (understandable) to be at the shop in your weekends :) Thanks for the video's!
1metiz 4 months ago
Resist the urge to put your fingers in the front of the engine - Very funny. Must be jet engine shop humor. =D
saxonlight 4 months ago
@saxonlight ... sigh... y'know... people who aren't jet-people... some of those people - have actually done it. They've been lucky, but I've heard of some who've lost fingers.
AgentJayZ 4 months ago
@AgentJayZ Kinda like people who try to look into the back end of a bazooka when its about to be fired. ;o) Thanks for yet another great informative video AJZ.
saxonlight 4 months ago
Awesome video, amazing engine looking forward to the rebuild! One with the emblem looks so much better.
Lewistodd2008 4 months ago
Avro Canada looks better obviously, interesting video for a airplane geek as myself!
larspetereriksson 4 months ago