T58 pt.7: Test Run

The T58 is in the boat, and we're going for a ride. Hang on for the fastest test run I've ever been to!

[@matthewstorm5188]

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.

[@AgentJayZ]

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.

[@johnclark3716]

Wrap up video after the test simply not needed JayZ, made my Monday morning a whole lot better. Great footage and WOW.....

[@gregwolfe7757]

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!

[@ddegn]

You ought to make occasional videos to show people your progress. There's not enough jet powered boat videos in the world.

[@465maltbie]

Of course I think I can see a smile under that helmet....looks like fun thanks for sharing. Charles

[@motormouser]

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.

[@nolandscott]

Drive fast, take chances. I love it.

[@scubasky]

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!

[@AgentJayZ]

Boat's got a steering system, and a world racing champion controlling it.

[@deSloleye]

Really well shot, we really get an idea of how ridiculously fast that thing is. Very cool.

[@shaithesm0ck]

I like the long shot you make in your videos JayZ please keep them up, it makes for a more natural experience :)

[@SirDeanosity]

That boat seems to have two speeds: slow and GONE:

[@FlynBrian]

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!

[@palerider16s]

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...:)

[@Nemius2]

Another successful test run and we was invited to follow. Really liked that. Thumbs up for AgentJayZ!

[@HughieMunro]

Its nice seeing the T58 in the workshop to in this boat traveling at ridiculous speeds, it works :D

[@nsemergey]

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 :)

[@jasonnoteboom4489]

Impressive! Pretty cool that I've watched a handful of your videos, learned alot, then this. Thanks for sharing.

[@scrfce123]

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.

[@latrogeniwile58]

Fabulous video! Thanks for taking us along for the ride.

[@Keythers]

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!!

[@rickey5353]

Blistering speed. The coolest ride!

[@kevjo3576]

Awesome boat

[@lostandrunningduo]

Man that would take some nuts of steel to get in that thing! Looks like much fun though... good run JZ!

[@jimmysparks315]

Just love the start up sounds...

[@DiamondPilotDan]

absolutely beautiful scenery

[@AgentJayZ]

Helicopter exhaust is specifically designed to eliminate residual thrust from the engine.

[@tmanF4]

This is the best video I have seen in my life.

[@fddriver02]

Lol. Marky Mark - Good Vibrations at 2:08. Nice work on the engine!

[@lockout45]

Another awesome video & Another job well done !

[@Coolkeys2009]

Awesome, I love the audio from 7.06. Definitely the best engine test yet.

[@DoctorDARKSIDE]

That looks like a HUGE acceleration... it must be a great satisfaction for you Jay!

[@robertbye3107]

awesome vids AgentJayZ , please keep them coming , T58's forever !

[@AgentJayZ]

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.

[@BillyBasford]

Another top video, keep them coming !

[@craigpennington1251]

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.

[@AgentJayZ]

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!

[@babaloo42]

Big smiles on this end. Sounds like the bat boat.

[@duro845]

awesome videos thanks for taking the time. learned a lot about turbine propulsion. wish I could experience the acceleration one day

[@bagelboi66]

Hell of a video, made my Saturday.

[@AgentJayZ]

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!

[@CX118]

I love the sound of that engine! and great acceleration too.

[@AgentJayZ]

We used a temporary strap today, but we're working on a permanent bracket.

[@AgentJayZ]

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.

[@Mike-01234]

That boat is so cool can see that super flat bottom lake has to be glass to run that boat fast.

[@sabamacx]

Utterly awesome!

[@pahafico2]

thanks so much for doing this, this reminds me why i started studying mechanical engineering, LOVE IT!

[@AgentJayZ]

The wings are controlled by the driver to adjust nose height.

[@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.

[@DScottDuncan]

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

[@williegillie5712]

Talk about living on the edge. That boat ain't floating it's flying

[@AgentJayZ]

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.

[@richwaight]

incredible power and speed!! great vid! thanks :)

[@jajazver]

How cool is that to work on an engine and do things right to let it work on you the same way.

[@DarkRyRy]

That's Fraking awsome!!!!

[@MrMidiman33]

Awsome Agent jay.... i love it. Great Job!

[@AgentJayZ]

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 !!

[@AgentJayZ]

They are for sale... you just have to look hard and be patient.

[@alancall5113]

Badass love it you guys rock

[@CxC2007]

first ! It´s so cool that we went together throw all the process.

[@AgentJayZ]

We're in the Peace River region, not quite halfway up from the Canadian border to the Arctic circle.

[@AgentJayZ]

output / input is efficiency, you betcha ! Now just pick your units.

[@jtveg]

Thanks for sharing. 😉👌🏼

[@justincase3880]

You all made a bad ass FOD screen .. cool …

[@scrfce123]

Sounds good. I'd just lodge a piece of 2x4 in between the gap and put a strap around that.

[@schymcgee]

WOW, still wiping speed tears from my eyes :P

[@cganz1234]

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! !!

[@AgentJayZ]

It's not a roll cage... it's an accent bar and a camera mount.

[@AgentJayZ]

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...

[@AgentJayZ]

I'm not a ratings whore, and I consider this video one of my faves, and a special gesture of thanks to all the honorary citizens of Jet City out there. I figure the people who are interested and worthy will find it.

[@Goodwithwood69]

A nice relaxing day, fishing on the river!

[@jacquesblaque7728]

A little transonic trolling to break the monotony, and snag dinner? Stainless-steel line preferred.

[@douro20]

I believe it's a Kamewa/Rolls-Royce jet pump. Nye Thermodynamics' Squirt 2 uses a custom jet pump.

[@DScottDuncan]

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

[@AgentJayZ]

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.

[@_ArPTech_]

just fly above water)) very nice.

[@RussianPunchProductions]

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.

[@AgentJayZ]

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...

[@robbiehobbs2009]

Same engine in a helicopter...... Thats fun. Now put that engine in a small jet boat..... Thats about as much excitement as a man can take.. AND you don't need a pilots license. Just a big pair of brass ones. Well done.

[@AgentJayZ]

The strap had hooks on it, and they were in holes in the ends of the forks.

[@FrontSideBus]

'kinell that thing takes off quick!

[@AgentJayZ]

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.

[@AgentJayZ]

First, you have to explain what you're going to do with a 2400Hp Explorer !

[@BlitzvogelMobius]

4:49 Glorious!

[@crazyrum]

awesome!

[@ferociousfrankie]

Sounds good, I think 50 of your views are from me haha.

[@AgentJayZ]

Good idea! ..uh, what do they have in 14 inch diameter ?

[@schymcgee]

Wish I could experience Mind Blowing :P I guess Slalom Skiing behind that Beast would be Mind Blowing or more appropriately, Leg Breaking :P

[@nsemergey]

That's a pity :( Hopefully the next time you will put this as a requirement in a contract.

[@stealhty1]

perfect smugglers , it out run Anybody

[@tinbender11]

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.

[@Chris.Davies]

Only an American could think it was a good idea to put a turbine in a jetboat. Protip: when Bill Hamilton invented the "jetboat" it was referring to the "water jet" not an actual jet turbine. :P

[@AgentJayZ]

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.

[@talon0863]

WOW... scary fast. Love your vids - Thanks. So what did you do to prevent the front frame getting over stressed again?

[@oisiaa]

How were the G's in the turn at 8:05? It looks like you were pulling maybe 2-3g in that turn.

[@kevinxbuffalo]

I am pretty sure you were just flying low ;)

[@spartan13014]

I want one like that!

[@dagomachining]

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?

[@AgentJayZ]

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.

[@zakiadam3717]

Thats A real jet boat.

[@albula642]

nice footage. Do you accidentally know how the stabilizing wings where controlled? Was it automatic or did he use his foot for that?

[@krbruner]

At first, I was thinking, why would a boat need a roll cage...but then it hit me, at 120mph, if something went wrong, the boat does not necessary have to land in the water.