Pratique du Shadowing: My Tesla Powered Boat Gets MAJOR Upgrades - Apprendre l'anglais à l'oral avec la vidéo
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251 phrases
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1
Welcome to episode 2 of the Tesla-powered mini jet boat build.
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Today we're fixing the batteries and building a totally custom Tesla motor to power it.
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It's so smooth.
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In this project, we're learning so much about high-voltage electric drivelines while pushing the limits of what's possible with them.
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At the end of this episode, we're doing the first successful test drive of the boat.
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Let's start today by removing the batteries so we can fix them.
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I'm standing in a metal boat, touching the live terminals.
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Any last words?
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Oh yeah!
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Ah, so much more barren in here.
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Next, let's pull out our Model 3 motor we put in in the last episode.
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There's nothing particularly wrong with it.
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I just don't like the inverter relocation mod, and I know we can do better.
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So, I've identified the worst cell.
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So this is a good cell here, 3.87, right here.
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0.19 volts.
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All the cells in this region right here are completely drained and they are unrecoverable.
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Once they get below about two volts, they're completely shot.
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The chemical makeup inside of them changes and they're no longer able to be charged again.
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These are the two new modules we are replacing the junk ones with.
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Now we have to make these four modules play nice together by balancing them out to the same voltage.
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These two packs were at 92 volts, which is pretty full, so I need to drop them down to match these two at 83.
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Luckily, it's pretty easy to remove power from a battery.
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This is so awesome!
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We're boiling water with just one of these modules.
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These battery modules carry an insane capacity, and they have such low resistance that they can put out a ton of current.
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I'm pulling about 30 amps with this little setup, but that is nothing for these liquid cooled batteries, they can put out over 600 amps each.
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It's just crazy.
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Now that the battery modules are balanced, we can get ready to reinstall them.
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Version two of the battery boxes is going together way more professionally than the first round.
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The last version had a bunch of silicone wrapped around all these bolts to seal it up
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and it was super nasty looking.
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You can't just put a rubber washer on these bolts
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because they have a load on them and it'll just squish the rubber everywhere.
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So I've come up with a solution.
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I found these washers.
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They're for like a hydraulic pump.
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Those will tighten up and they can handle a ton of load while they're sealing with that rubber washer there.
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They're not very cheap.
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This was $400.
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What have we done?
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It's the best way to do it.
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It's the only way.
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I don't know what to tell you, man.
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These electric projects are just expensive.
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Since we're using an aftermarket battery management system, we can get rid of the Tesla control boards off of these new modules, just like last time.
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And then we can add our cell tap wires that monitor and balance the voltage across each of our 96 cells.
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Last time we soldered to these battery tabs and it did not work well.
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So this time we're crimping to them.
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It looks a little crude, but this is actually the best option here.
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I'm upgrading all the wiring with removable plugs to make assembly and any repairs in the future a lot easier. is fully assembled
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and i want to test the cooling system in each module we're just gonna put about 10 psi in
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and let it hold for a little while make sure we don't have any leaks all good
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finally we are sealing up the new batteries
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looks so good this is our new motor
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and this thing is gonna be crazy our model 3 motor was an impressive 280 horsepower,
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but this custom-tuned Model S motor will make over 350 horsepower.
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You know you're doing some sketchy stuff when they try to hide the bolts from you?
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That know right where they're at.
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You can see the gearing reduction here.
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So that one's spinning 9.7 times slower than that one.
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This is the RPM we're after.
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Horsepower is great, but the coolest part about this motor is it can spin over 18 000 rpm
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i've got the motor fully gutted now and we can check out how it works this is the inverter
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that controls how much power the motor gets and the rotor The rotor lives in there like that,
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and this is what generates the torque.
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When this is in the car, there's a bunch of gears in here
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that reduce the RPM of the motor to the axle outputs right here about 9 to 1,
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but we need the full RPM of the motor.
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The way we're going to do
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that is by adding this custom stub shaft right into the tail end of this
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and drive it all the way in so that we have the jet drive connected directly to the rotor on the motor.
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It's also too wide to go in the boat just like this
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and we don't need this whole section that used to carry all the gears
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so we're going to slice it off and weld the cap on it.
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Oh Now
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we're gonna mill this part perfectly flat.
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I'm not a machinist.
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I'm using random parts to jig this thing up.
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We're gonna ratchet strap it down and just run the mill into it, make it flat. That worked really good.
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I can't believe it didn't fly off of here.
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Wow.
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Not bad.
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Definitely good enough to weld to.
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We got our oil pressure fitting installed.
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This is definitely the world's first Tesla with an AN race fitting welded to the top of it for oiling.
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Since we removed the internal oil pump and some of the gears that splash oil around,
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I need to add a couple different ports to spray oil on our bearings to make sure they stay cool and lubricated.
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Modifying the rotor was the key to the whole build here.
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I had this section removed from this rotor.
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Look at that.
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So this is what it used to look like.
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And I had a machine called a wire EDM that cut all the way around to the profile of our new shaft.
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And it removed this blank.
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It is unfathomably precise.
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Like we're talking smaller than human hairs by like a thousand it.
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Now that the rotor is bored out to the correct diameter, we can slide our new stub shaft in.
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So we're going to have to chill this part down to shrink it and then slide it in.
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I really wanted to use my liquid nitrogen for this, but I used it all up making ice cream.
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I had this in the freezer for a few hours, so it's nice and shrunk down.
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Hopefully it pops in.
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If we mess this up, it's a really big deal.
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It's going!
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I think that's all we're gonna get.
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That's okay.
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It doesn't need to go in all the way.
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It's definitely not gonna come out.
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Sweet!
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If I would have used the liquid nitrogen, it for sure would have went in all the way.
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Oh baby!
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This is now officially a jet boat motor.
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This is the standard jet pump adapter flange.
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That is so cool.
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It is time to install our extremely custom modified Tesla rotor.
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It's a real pain in the butt to get out.
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If we mess this up, it's not good.
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You can damage the bearings.
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Oh my gosh.
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Now we're going to put this cap on here.
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And you see how that shaft lines up right here.
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We just need to poke a hole in the top of this thing.
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Stick the shaft out and then put a little seal right here.
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That's it dude, we're done.
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I made this little ceiling flange out of a piece of half-inch aluminum plate.
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And I'm going to use a razor blade to scribe its perfect location on the housing
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so I can take it off and weld it.
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This thing fits perfect.
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This is the stator.
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This is what actually puts the current from the inverter into the rotor.
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Oh yeah.
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You have to put a lot of thought into how the whole system works before you can design parts. For example,
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the diameter of this shaft is determined on the diameter of this bearing being able to slide over top of it.
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If it was larger than that, we'd have a very big problem.
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To get this shaft installed perfectly aligned with the factory rotor was not easy.
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Lots of planning, redoing the oil system, cutting the case, everything to make this happen.
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I'm so proud of this motor.
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I think it's really going to work good.
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This is the inverter.
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What it does is it takes the two big DC power leads from your batteries
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and converts it to a three-phase AC output to run the motor with all these control boards inside of here.
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This inverter has a huge problem for us here, and that's that logo right there.
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The stock control boarding here makes it really hard to control the motor when it's not in a Tesla vehicle.
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But luckily for us, somebody else has spent a ridiculous amount of time developing a new one
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that we can install and control this thing however we want.
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We just need to pop off the Tesla control board, grab our new control board, and solder a few connectors to it.
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Too easy, dude.
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Too easy.
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Got our aftermarket inverter board installed now
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This motor is so close to not fitting.
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There is an eighth inch of clearance on the bottom side, but I love how it looks in here.
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Let's whip up some new motor mounts and modify the hull just a little bit to accept them. so Check
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out our suspension system.
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These rubber isolators are out of a military crate that held a jet engine.
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Look how well this works.
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They have their own suspension inside the boat.
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I got my spacesuit gloves on.
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We're doing the final install on the battery here.
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Yeah, it didn't even explode this time.
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Can't wait to see this motor spin.
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I think we can do it today.
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There we go.
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We also need to redo all of the coolant hoses.
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This is kind of fun.
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There's a lot of crazy shapes.
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This is my favorite because it looks like a little puppy.
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We are ready to fill it up with coolant and oil.
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I've got the motor full of oil so we can turn on the pump and test the flow.
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It pulls out of the bottom of the case there
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and comes in the top here and we get to see it draining into the case.
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Wow, look at that.
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What?
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That's so cool.
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Now we can hook it up.
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Charge port sensor is plugged in.
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Now we will see if it starts to charge.
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No, wait.
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It's charging.
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Is charging power status on?
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It's pulling nine amps.
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Let's go.
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I'm so pumped.
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seeing this thing charge after all those hours of work really pays off
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it's 3 30 in the morning i just got connected to
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the inverter you actually use wi-fi for the upgraded board
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that i put in there you can see we're connected to inverter
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this is months in the making we are ready to spin over the model s motor in the boat
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oh my gosh i'm so excited enable i'm gonna give it a little throttle and see if it spins
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oh this thing is silent the model 3 motor is a lot louder let's go
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There's a lot of little things to do, but I just want to get it on the water and make sure that it works.
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You want to go with?
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I got your harness in the mail today. Are you ready, dude?
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Can't wait.
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I'm so pumped.
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Yeah, the last test drive we did was a year ago.
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We didn't have time to put the seats in.
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I hope that's in here.
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Bro, are we gonna die?
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Power on the motor.
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For all the testing today, I'm gonna set the power limit to about 60% and the maximum RPM about 50%.
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I think it's ready to go.
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See, we got full bars of battery.
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Fully charged.
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I'm nervous.
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Ready?
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Dude!
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She's working.
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It's working.
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Oh my gosh.
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It sounds so smooth.
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It's so quiet.
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Oh, she wants to rip.
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I guess we're just off to sea.
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Okay, calm down.
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When should we give it full power?
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Not yet.
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Floor it.
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Oh crap!
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Oh crap!
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Dude!
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No way!
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What the heck?
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Holy smokes!
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That is insane!
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Was that full throttle?
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No!
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That wasn't full throttle?
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No!
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Oh yeah, okay.
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Holy crap!
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What the heck?
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We just went like 50 miles an hour.
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That's crazy.
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Like working on a project in the shop for three years and then the first time you take it out properly,
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you have to turn your hat backwards because it is that fast.
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It's 0 to 100.
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Smoking up the whole environment.
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Yeah, I am.
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Couldn't be us.
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Anyway, did you hear about that new lithium mine going in across the street?
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Yep.
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Dude, that's a great wreck.
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This is so sick.
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I can't believe it.
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It's working so good.
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We're gonna make a couple tweaks, maybe move the batteries forward a little bit, and then all we have to do is paint it, put in the windows, put on the stickers, just like little stuff.
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Finally, after three years of working on it, it is functional.
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We officially own a Tesla powered mini jet boat.
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This is amazing.
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In the next episode, we are finishing the jet boat build.
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Huge thanks to Tubi for sponsoring this project.
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Come back next week for episode 3, or if you want to watch the entire Build series right now, it is live on Tubi.
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Vocabulaire et conseils d’expression pour cette leçon
Cette leçon d’expression orale de niveau B2 s’appuie sur la vidéo « My Tesla Powered Boat Gets MAJOR Upgrades ». Les mots qui reviennent le plus souvent : motor, rotor, boat. Cette vidéo contient 251 phrases et 2330 mots à répéter en shadowing. La partie parlée dure 23:35. Le locuteur parle lentement, environ 99 mots par minute, ce qui laisse le temps d’imiter chaque son. 82 % des mots font partie des 3 000 mots les plus courants en anglais ; le reste mérite d’être vu avant de commencer.
Vocabulaire clé de cette vidéo
Les 15 mots les plus avancés de la vidéo, avec leur prononciation et leur sens :
| Mot | Prononciation | Sens |
|---|---|---|
| rotor nom | /ˈɹoʊ.tɚ/ | rotor |
| module nom | /ˈmɑd͡ʒul/ | module |
| shaft nom | /ˈʃɑːft/ | hampe |
| weld verbe | /wɛld/ | braser, souder |
| horsepower nom | /ˈhɔɹsˌpaʊɚ/ | cheval-vapeur |
| throttle nom | /ˈθɹɔ.tl̩/ | accélérateur |
| volt nom | /vəʊlt/ | volt |
| washer nom | /ˈwɒʃə(ɹ)/ | laveur, laveuse |
| modify verbe | /ˈmɑ.dɪˌfaɪ/ | modifier |
| gosh | /ɡɑːʃ/ | bon sang |
| voltage nom | /ˈvəʊltɪd͡ʒ/ | tension, voltage |
| bolt nom | /boʊlt/ | boulon, vis |
| diameter nom | /daɪˈæmɪdɚ/ | diamètre |
| install verbe | /ɪnˈstɔl/ | installer |
| coolant nom | /ˈkuːlənt/ | fluide caloporteur, réfrigérant |
Les verbes à particule que vous entendrez
| Mot | Prononciation | Sens |
|---|---|---|
| calm down verbe | se calmer, s'apaiser | |
| check out verbe | mater, regarder | |
| come back verbe | revenir | |
| come out verbe | /ˌkʌm ˈaʊt/ | sortir |
| come up with verbe | inventer, imaginer | |
| get out verbe | sortir | |
| make over verbe | relooker | |
| pay off verbe | soudoyer |
Des phrases à répéter
Des phrases courtes et complètes de la vidéo, à réutiliser dans la conversation de tous les jours :
- We're boiling water with just one of these modules.
- What have we done?
- I don't know what to tell you, man.
- You want to go with?
- When should we give it full power?
La grammaire de cette vidéo
Les structures que le locuteur utilise le plus, avec les mots exacts de la vidéo :
| Structure | Dans la vidéo |
|---|---|
| « Used to » used to + verbe — une habitude ou un état passé qui n’est plus vrai | used to carry · used to look |
| Present perfect have/has + participe passé — une action passée qui compte encore maintenant | I've identified · I've come · have we done |
| Voix passive be + participe passé — l’accent est mis sur ce qui arrive, pas sur qui le fait | be charged · are balanced · is plugged |
Prononciation à surveiller
Le locuteur utilise 72 contractions et formes réduites, comme we're, I'm, gonna. Prononcez-les sous leur forme courte, telles que vous les entendez.
- Les sons « th »: throttle /ˈθɹɔ.tl̩/, lithium /ˈlɪθi.əm/, eighth /eɪtθ/
- Les sons « sh » et « zh »: shaft /ˈʃɑːft/, washer /ˈwɒʃə(ɹ)/, gosh /ɡɑːʃ/, machinist /məˈʃiː.nɪst/, relocation /ˌɹiːləʊˈkeɪʃən/
- Mots longs — placez bien l’accent: diameter /daɪˈæmɪdɚ/, relocation /ˌɹiːləʊˈkeɪʃən/, aluminum /əˈlu.mɪ.nəm/
Les sons difficiles pour les francophones :
- /h/ — il se souffle, il n’est pas muet: horsepower /ˈhɔɹsˌpaʊɚ/, heck /hɛk/, harness /ˈhɑɹ.nəs/, hydraulic /haɪˈdɹɔːlɪk/, hose /hoʊz/
- /tʃ/ et /dʒ/ — à ne pas adoucir en « ch » et « j »: module /ˈmɑd͡ʒul/, voltage /ˈvəʊltɪd͡ʒ/, flange /ˈflænd͡ʒ/, nitrogen /ˈnaɪ.tɹə.d͡ʒən/, sketchy /ˈskɛt͡ʃi/
- /r/ anglais — langue recourbée, sans frotter la gorge: rotor /ˈɹoʊ.tɚ/, horsepower /ˈhɔɹsˌpaʊɚ/, throttle /ˈθɹɔ.tl̩/, washer /ˈwɒʃə(ɹ)/, redo /ɹiˈduː/
Comment s’entraîner avec cette vidéo
- Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
- Répétez phrase par phrase à vitesse normale, en reprenant chacune jusqu’à ce que votre rythme corresponde à celui du locuteur.
- Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme rotor, module, shaft.
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.