You’ve got to love that calm, relaxed hum from the engine as the boat races across the water at speeds in well in excess of what even a built piston engine can do. It’s SO unlike the way that your average supercharged big block sounds like it’s nearing the end of its useful life under similar conditions.
Actually, the PT governor, which keeps the rotor speed in a heli constant, is used in this boat as a kind of rev-limiter for the jet drive. It is set at 100%, and Gord controls the fuel to the gas generator with that foot pedal. So the PT speed is directly proportional to water-jet thrust, and it goes up and down as needed to drive the boat.
Thank you so much for the videos, I have been watching for years and you have inspired me. I am building my own turbine powered speed boat with a Boeing 502 turboshaft, it wont get to those speeds but I am hoping it will be as fun to drive as it is to build!
This was a great series of vids! And a fantastic finale! As a pilot I completely enjoyed the step-by-step engine tear-down and rebuild. To see the finished product flying across Charlie Lake was fantastic! The boat looks to be a friggin rocket!
AgentJayZ that was totally Awesome...!!! you have answered all of my question about the In's and out about the workings of a jet engine...BIG THANK YOU AGENTJAYZ...:)
Been watching your vids for a long time. Went to Oshkosh last year and got to see a Pratt & Whitnny PT6 cutaway and I actually understood how it worked because or your channel. Thanks making the vids so the every day person can understand how a jet engine works. Keep up the good work!!
I had a couple of cameras, but I had no idea what this check ride was going to involve, so I just winged it. Couldn't use the head-cam, and I just threw one cam to Walter. He got some great shots. In the boat, I was holding my cam with both hands trying to fight the G's and the wind. I can't believe how well it turned out. It's good my attention was on the camera, because what I was seeing in terms of acceleration was totally fantastic. You see what I saw!
Once again, awesome work Jay. After following this series, it makes me feel like I could virtually rebuild a T58 now. The boat is amazing. I can't think of a better use for a spare gas turbine.
When I watched your vid, I recognized right away that it was an Allison ( RR ) 250 starting up. I love that sound. Then you show the engine with its nicely made exhaust stacks, and there sits a sweet little 250. It's either a C-18 at about 320Hp or a C-20 at about 400, I can't tell. That's a beautiful boat, and it planes gracefully. You guys did a nice job.
During a race, Gord is continually working the throttle between flight idle and 100%. Today, I think he was using a little less than 100% when he was hammering on it. ... maybe out of consideration for his first-time passenger, but maybe because the lake isn't that big.
Very nice boat. it looks like a spaceship. Definitely some big money in that thing Some details about what's in it would be cool, and maybe showing something besides it idling.
Mother of God! This is the best video by far on this channel. I would love to see the same method of test run of some properly sized jet engine installed in some figther plane :)
As for running at high power, engines get more efficient and cleaner combustors as the science and engineering improves. The three you mentioned are all designs from the 50s, 40s, and 60s, respectively. When they are working hard, you'll likely see a hint of black smoke in the exhaust.
You could remove the PT section easily, as I have shown, and will try to again. Taking on the project of fabricating a jet thrust nozzle ( it would not have to be variable), even of fixed area, would be a huge project. I know it has been done, but I have not seen the finished project. Why, though? Pure turbojets are almost useless below about 500 mph, and are only halfway fuel efficient above Mach1. That's why no aircraft use them any more.
So your efficiency is fuel consumption at full power... The T58 is rated at 1200 Hp, and I understand the Veyron is about 1000. Your information is wrong. the T58 consumes 0.61 pounds per hour, not gallons, per Hp So: 1200 X 0.61/60/8(lbs per gallon) = 1.52 gallons per minute. And the Veyron, corrected to 1200 hp: 1.4X1.2 = 1.68 Given my value for pounds per gallon of Kerosene is a guess... I'd say it's a tie.
Hi Jay, Wow! This falls into the "Shit-N-Git" classification! Love that sound... so smooth yet commanding! Makes getting "Pissed-Off" worth the trouble. Great job! Darren
Well, efficiency is a ratio of something to something. It all depends what you define efficiency as. 1) It is an internal combustion engine 2) Aaah! you mean piston engine ! 3) fuel consumption at full power ? same for both 4) fuel consumption at idle or part power, pistons are the best by far 5) power output per pound or kilo of engine weight? turbines baout 5 times better. ...It all depends.
Nothing is supposed to smoke, but it is very common for any gas turbine engine to emit a bit of smoke on startup. As I've mentioned before, a while back I was on an Embraer 190 at the Calgary airport one sunny day, and when the captain started engine #2, the entire aircraft was enveloped in a cloud of white smoke. Those CF34 turbofans are modern, FADEC-controlled, high technology engines... and sometimes you get a smokey start.
Jay, Had to watch (& listen) again; this must be at least the 12th time! Still cool...love the sound of that engine. By the way, the drive system is in the "T58 #2" video, however everyone should indeed watch all of the T-58/Unnatural Disaster videos! Darren
The boat driver doesn't seem to care about his feet for lack of proper footwear. This is the same as riding a motorcycle with flip flops and shorts=bad news. Very nice little fishing trollor. P.S. You guys do a fantastic job there. Good luck with your endeavors and yes, that is one fast SOB.
Dear Craig. Dear, dear Craig... ... ... you are saying that a boat is the same as a motorcycle, implying that, among other things, a lake is the same as a road... that water is the same as pavement. That having feet inside a hull is the same as having feet on pegs ( outside the (nonexistent!) hull). I don't know how to respond, except incredulously. Yeah, that's the word. PS: When this video was recorded, the driver in the flip flops was a former world champion jet boat racer, so I trusted him to know a thing or two. I guess he still is, and I still do!
Well, Bill went to a distant air force base to witness the test flight of one of our afterburning J79's in a fighter jet. He didn't get to go for a ride, though...
its pretty safe to say its a propeller. probably a jet system (water jet i mean) but still a propeller. otherwise you would not have such strong accelleration.
You mean not enough to be of any significance? :P I do wonder how difficult it would be to adapt the T58 into a turbojet (take out the free turbine, and redesign the post-turbine area into a viable exhaust?). I understand that turbine engines tend to have their entire design based around a specific use, but compact engines like the T58 are interesting, because they seem a bit more hands on, and possibly easier to adapt (could just be an illusion due to the small size).
I jumped to this vid, whick one if there is one, shows the shaft to connect to the jet pump? Gotta have a shat, it doesn't push. I know they had to make a special bowl for the pump, it does turn in a different dirction, and the impeller.
Hey that video of you and your friends on that boat was bad ass. My boss is in the njba and is in the process of building a pretty bad ass boat too. Only gas powered. Do you use a berkly pump on that rig? By the way, what do you think of the cheyenne boat hull for that set up you have?
My HR was initially speeding away, but then it slowed right down, because in all the acceleration and excitement, my heart forgot what it was supposed to be doing...
I feel like a real genius now.🙄 I see the gearbox and the output shaft now, under the exhaust. Is that a starter motor on the front? More questions. Sorry. What does it have for electric power generation to recharge the battery? Or do they just make sure they have a fully charged battery in the boat?
Can you show more detail and close ups of the jet drive please? Where does the water enter? Is it from underneath the boat, or at the back close to the discharge nozzle?
+Scott Mccrohon As I've mentioned before, this is world championship racing, and no boat builder is willing to share their designs. I am the engine guy, and I'm not allowed to crawl under the boat to see what you are asking about. Really.
Can you please explain how the drive system works? Its hard to see in the video, but it looks like an impeller (like a jetski) going down to a really really small nozzle, does the whole nozzle end move? Its fascinating...What were they bolting onto the shoe, was that the reducer section? Would love to be a passenger in this thing!
Do the boat's foreplanes move dynamically in operation, or are they fixed? That, and how the jet gets trimmed when planing would be tutorials of interest. This looks so cool, my "gotta have one" reflex has been triggered, but I don't have a couple million disposable $$.
That looks like it would be a blast, pardon the pun there. For real shot outta cannon, and don't you live that little tail walk those hulls produce in certain conditions. Yes sir I believe the Heck with dyno seat if pants says it all.
Well not to criticize too much but when you hang something from the fork lift forks you should secure it better. That sling could easily slide off the end of the forks, a C clamp on one fork will prevent and accident. Now perhaps you had something on there but from our view it didnt look like it. Charles
Yes, it's a design using ideas from quite a few people. We have an anchor plate that bolts to the compressor splitline, which supports the rear of the accessory assembly via an attached link arm that has a rod end or Heim joint at each end. No more cracked front frames.
You’ve got to love that calm, relaxed hum from the engine as the boat races across the water at speeds in well in excess of what even a built piston engine can do. It’s SO unlike the way that your average supercharged big block sounds like it’s nearing the end of its useful life under similar conditions.
Ive got a smile from ear to ear...i can only imagine how broad yours must have been!
Total awsome....thanks SO much for sharing. Bob.
Actually, the PT governor, which keeps the rotor speed in a heli constant, is used in this boat as a kind of rev-limiter for the jet drive. It is set at 100%, and Gord controls the fuel to the gas generator with that foot pedal.
So the PT speed is directly proportional to water-jet thrust, and it goes up and down as needed to drive the boat.
Thank you so much for the videos, I have been watching for years and you have inspired me. I am building my own turbine powered speed boat with a Boeing 502 turboshaft, it wont get to those speeds but I am hoping it will be as fun to drive as it is to build!
You ought to make occasional videos to show people your progress. There's not enough jet powered boat videos in the world.
A M A Z I N G! Its hard to grasp how they keep such raw power and chaos under control in those things. Thanks for another one of a kind great video!
This was a great series of vids! And a fantastic finale! As a pilot I completely enjoyed the step-by-step engine tear-down and rebuild. To see the finished product flying across Charlie Lake was fantastic! The boat looks to be a friggin rocket!
Wrap up video after the test simply not needed JayZ, made my Monday morning a whole lot better. Great footage and WOW.....
AgentJayZ that was totally Awesome...!!! you have answered all of my question about the In's and out about the workings of a jet engine...BIG THANK YOU AGENTJAYZ...:)
Been watching your vids for a long time. Went to Oshkosh last year and got to see a Pratt & Whitnny PT6 cutaway and I actually understood how it worked because or your channel. Thanks making the vids so the every day person can understand how a jet engine works. Keep up the good work!!
That boat seems to have two speeds: slow and GONE:
I had a couple of cameras, but I had no idea what this check ride was going to involve, so I just winged it. Couldn't use the head-cam, and I just threw one cam to Walter.
He got some great shots.
In the boat, I was holding my cam with both hands trying to fight the G's and the wind.
I can't believe how well it turned out. It's good my attention was on the camera, because what I was seeing in terms of acceleration was totally fantastic. You see what I saw!
Once again, awesome work Jay. After following this series, it makes me feel like I could virtually rebuild a T58 now. The boat is amazing. I can't think of a better use for a spare gas turbine.
Impressive! Pretty cool that I've watched a handful of your videos, learned alot, then this. Thanks for sharing.
When I watched your vid, I recognized right away that it was an Allison ( RR ) 250 starting up. I love that sound.
Then you show the engine with its nicely made exhaust stacks, and there sits a sweet little 250. It's either a C-18 at about 320Hp or a C-20 at about 400, I can't tell.
That's a beautiful boat, and it planes gracefully. You guys did a nice job.
Fabulous video! Thanks for taking us along for the ride.
Helicopter exhaust is specifically designed to eliminate residual thrust from the engine.
Of course I think I can see a smile under that helmet....looks like fun thanks for sharing.
Charles
I like the long shot you make in your videos JayZ please keep them up, it makes for a more natural experience :)
During a race, Gord is continually working the throttle between flight idle and 100%.
Today, I think he was using a little less than 100% when he was hammering on it.
... maybe out of consideration for his first-time passenger, but maybe because the lake isn't that big.
Really well shot, we really get an idea of how ridiculously fast that thing is. Very cool.
Very nice boat. it looks like a spaceship. Definitely some big money in that thing Some details about what's in it would be cool, and maybe showing something besides it idling.
Good idea! ..uh, what do they have in 14 inch diameter ?
The wings are controlled by the driver to adjust nose height.
awesome vids AgentJayZ , please keep them coming , T58's forever !
I thought this was the video where I explained the drive system... Oh, well... it's in there somewhere. Maybe you should watch all 9 !!
That looks like a HUGE acceleration... it must be a great satisfaction for you Jay!
Awesome, I love the audio from 7.06. Definitely the best engine test yet.
Man that would take some nuts of steel to get in that thing! Looks like much fun though... good run JZ!
awesome videos thanks for taking the time. learned a lot about turbine propulsion. wish I could experience the acceleration one day
This is the best video I have seen in my life.
Drive fast, take chances. I love it.
They are for sale... you just have to look hard and be patient.
Mother of God! This is the best video by far on this channel. I would love to see the same method of test run of some properly sized jet engine installed in some figther plane :)
We're in the Peace River region, not quite halfway up from the Canadian border to the Arctic circle.
Another successful test run and we was invited to follow. Really liked that. Thumbs up for AgentJayZ!
As for running at high power, engines get more efficient and cleaner combustors as the science and engineering improves. The three you mentioned are all designs from the 50s, 40s, and 60s, respectively. When they are working hard, you'll likely see a hint of black smoke in the exhaust.
Is 1200 enough for a tractor, or do we need a bigger engine ?
We used a temporary strap today, but we're working on a permanent bracket.
Lol. Marky Mark - Good Vibrations at 2:08.
Nice work on the engine!
Boat's got a steering system, and a world racing champion controlling it.
You could remove the PT section easily, as I have shown, and will try to again.
Taking on the project of fabricating a jet thrust nozzle ( it would not have to be variable), even of fixed area, would be a huge project.
I know it has been done, but I have not seen the finished project.
Why, though?
Pure turbojets are almost useless below about 500 mph, and are only halfway fuel efficient above Mach1.
That's why no aircraft use them any more.
The strap had hooks on it, and they were in holes in the ends of the forks.
Just love the start up sounds...
It's not a roll cage... it's an accent bar and a camera mount.
I love the sound of that engine! and great acceleration too.
So your efficiency is fuel consumption at full power...
The T58 is rated at 1200 Hp, and I understand the Veyron is about 1000.
Your information is wrong. the T58 consumes 0.61 pounds per hour, not gallons, per Hp
So: 1200 X 0.61/60/8(lbs per gallon) = 1.52 gallons per minute.
And the Veyron, corrected to 1200 hp: 1.4X1.2 = 1.68
Given my value for pounds per gallon of Kerosene is a guess... I'd say it's a tie.
thanks so much for doing this, this reminds me why i started studying mechanical engineering, LOVE IT!
Hi Jay,
Wow! This falls into the "Shit-N-Git" classification! Love that sound... so smooth yet commanding! Makes getting "Pissed-Off" worth the trouble. Great job!
Darren
Awesome as always! !
What is the temp margin at speed? Doesn't seem to work to hard! What percent power does it run at?
Great series! !!
Well, efficiency is a ratio of something to something. It all depends what you define efficiency as.
1) It is an internal combustion engine
2) Aaah! you mean piston engine !
3) fuel consumption at full power ? same for both
4) fuel consumption at idle or part power, pistons are the best by far
5) power output per pound or kilo of engine weight? turbines baout 5 times better.
...It all depends.
Another awesome video & Another job well done !
Its nice seeing the T58 in the workshop to in this boat traveling at ridiculous speeds, it works :D
Hell of a video, made my Saturday.
absolutely beautiful scenery
Blistering speed. The coolest ride!
WOW... scary fast. Love your vids - Thanks. So what did you do to prevent the front frame getting over stressed again?
Nothing is supposed to smoke, but it is very common for any gas turbine engine to emit a bit of smoke on startup. As I've mentioned before, a while back I was on an Embraer 190 at the Calgary airport one sunny day, and when the captain started engine #2, the entire aircraft was enveloped in a cloud of white smoke. Those CF34 turbofans are modern, FADEC-controlled, high technology engines... and sometimes you get a smokey start.
Jay,
Had to watch (& listen) again; this must be at least the 12th time! Still cool...love the sound of that engine. By the way, the drive system is in the "T58 #2" video, however everyone should indeed watch all of the T-58/Unnatural Disaster videos!
Darren
output / input is efficiency, you betcha ! Now just pick your units.
Talk about living on the edge. That boat ain't floating it's flying
How cool is that to work on an engine and do things right to let it work on you the same way.
That boat is so cool can see that super flat bottom lake has to be glass to run that boat fast.
Awesome boat
The boat driver doesn't seem to care about his feet for lack of proper footwear. This is the same as riding a motorcycle with flip flops and shorts=bad news. Very nice little fishing trollor. P.S. You guys do a fantastic job there. Good luck with your endeavors and yes, that is one fast SOB.
Dear Craig. Dear, dear Craig... ... ... you are saying that a boat is the same as a motorcycle, implying that, among other things, a lake is the same as a road... that water is the same as pavement.
That having feet inside a hull is the same as having feet on pegs ( outside the (nonexistent!) hull).
I don't know how to respond, except incredulously.
Yeah, that's the word.
PS: When this video was recorded, the driver in the flip flops was a former world champion jet boat racer, so I trusted him to know a thing or two. I guess he still is, and I still do!
Well, Bill went to a distant air force base to witness the test flight of one of our afterburning J79's in a fighter jet.
He didn't get to go for a ride, though...
Sounds good. I'd just lodge a piece of 2x4 in between the gap and put a strap around that.
How were the G's in the turn at 8:05? It looks like you were pulling maybe 2-3g in that turn.
its pretty safe to say its a propeller. probably a jet system (water jet i mean) but still a propeller. otherwise you would not have such strong accelleration.
Another top video, keep them coming !
Big smiles on this end.
Sounds like the bat boat.
You mean not enough to be of any significance? :P
I do wonder how difficult it would be to adapt the T58 into a turbojet (take out the free turbine, and redesign the post-turbine area into a viable exhaust?).
I understand that turbine engines tend to have their entire design based around a specific use, but compact engines like the T58 are interesting, because they seem a bit more hands on, and possibly easier to adapt (could just be an illusion due to the small size).
incredible power and speed!! great vid! thanks :)
Awsome Agent jay.... i love it. Great Job!
I believe it's a Kamewa/Rolls-Royce jet pump. Nye Thermodynamics' Squirt 2 uses a custom jet pump.
I jumped to this vid, whick one if there is one, shows the shaft to connect to the jet pump? Gotta have a shat, it doesn't push. I know they had to make a special bowl for the pump, it does turn in a different dirction, and the impeller.
nice footage. Do you accidentally know how the stabilizing wings where controlled? Was it automatic or did he use his foot for that?
Hey that video of you and your friends on that boat was bad ass. My boss is in the njba and is in the process of building a pretty bad ass boat too. Only gas powered. Do you use a berkly pump on that rig? By the way, what do you think of the cheyenne boat hull for that set up you have?
My HR was initially speeding away, but then it slowed right down, because in all the acceleration and excitement, my heart forgot what it was supposed to be doing...
First, you have to explain what you're going to do with a 2400Hp Explorer !
Very Kewl project. What does the Co-Pilot do when racing the boat?
I feel like a real genius now.🙄 I see the gearbox and the output shaft now, under the exhaust. Is that a starter motor on the front? More questions. Sorry. What does it have for electric power generation to recharge the battery? Or do they just make sure they have a fully charged battery in the boat?
Can you show more detail and close ups of the jet drive please? Where does the water enter? Is it from underneath the boat, or at the back close to the discharge nozzle?
+Scott Mccrohon As I've mentioned before, this is world championship racing, and no boat builder is willing to share their designs. I am the engine guy, and I'm not allowed to crawl under the boat to see what you are asking about. Really.
+Scott Mccrohon Most Jet Drives pull water in just forward of the discharge. This unit looks no different.
Can you please explain how the drive system works? Its hard to see in the video, but it looks like an impeller (like a jetski) going down to a really really small nozzle, does the whole nozzle end move? Its fascinating...What were they bolting onto the shoe, was that the reducer section? Would love to be a passenger in this thing!
Did you get a chance to build a reinforcement bracket for the housing that broke in the first place?
Do the boat's foreplanes move dynamically in operation, or are they fixed? That, and how the jet gets trimmed when planing would be tutorials of interest. This looks so cool, my "gotta have one" reflex has been triggered, but I don't have a couple million disposable $$.
Answered that yesterday.
Yours for 175K.
@@AgentJayZ I honestly am watching all the videos, but there are so many... I could offer 175K millipesos!
Oh yeah, it was to a comment on the video Faster than last year. I should have mentioned that.
Does input draws in anything? It is placed so close to the passengers. Or it's not air consuming as I thought?
Dose the jet power a propeller or is the boat only being pushed by the exhaust?
That looks like it would be a blast, pardon the pun there.
For real shot outta cannon, and don't you live that little tail walk those hulls produce in certain conditions.
Yes sir I believe the Heck with dyno seat if pants says it all.
A nice relaxing day, fishing on the river!
A little transonic trolling to break the monotony, and snag dinner? Stainless-steel line preferred.
That was awesome. How did you obtain these engines?
How is it propelled? I still dont see the connection between the turbine and moving a ship..
I also have a question, are J79, Orenda 14 and t58's supposed to smoke while startup and running at full blast?
Thanks
Alex Hutton
I forgot to ask; how did you address the issue with the ancillary flange cracking?
My heart was pounding just watching that! Was your's pounding as fast as that boat was going?
Well not to criticize too much but when you hang something from the fork lift forks you should secure it better. That sling could easily slide off the end of the forks, a C clamp on one fork will prevent and accident. Now perhaps you had something on there but from our view it didnt look like it.
Charles
How efficient is it compared to an internal combustion engine of the same power?
Badass love it you guys rock
126 mph...
Even the Autobahn starts to feel narrow at that speed, nice to have a big surface to do it on :-)
Did you find a way to better secure/mount the assembly that was breaking off the mounting ears from the boat bounce when racing along on the water?
Yes, it's a design using ideas from quite a few people. We have an anchor plate that bolts to the compressor splitline, which supports the rear of the accessory assembly via an attached link arm that has a rod end or Heim joint at each end. No more cracked front frames.
Hey, nicely done! may I ask how much money you put into this project? greets Jay