03x08 - our de BBQ

[bunniefuu]

♪ We've got two days

to get this straight

♪ We've got a challenge

just won't wait

♪ Our eyes are on the prize

♪ An engineer

just set the date

♪ We've got this client

can't be late

♪ Oh, no

it's go time

♪ Build it, test, fix it

debug now and kick it

♪ Got to get it off the ground

yeah

♪ Stick around and you'll see

what teamwork's supposed to mean

♪ It's so key

Design Squad

♪ Design Squad. ♪

Filling tank.

Fingers crossed.

Need a countdown.

Three, two, one.

There it goes.

No way!

Uh-huh.

And to there.

Carmel, anyone?

Thank you.

All right, Design Squads,

now, tell me, do you have any

idea what today's challenge

might be?

Dog sleds.

Dog sleds was last time.

All right, turn around, roll the

tape.

Let's watch it.

Food!

Hey there, I'm Rob Gregory,

Redbones Barbecue.

And we know barbecue.

And we're having a big old

street party here at Redbones

benefiting the New England

Mountain Bike Association.

We're a bike-friendly place

here.

And we're the only barbecue

joint in the country that has

valet parking for bicycles.

We do a lot of benefits like

this, lots of street parties

benefiting all kinds of good

causes.

And that's where you come in,

Design Squads.

We're going to be having a big

pig roast to benefit the

homeless.

The key to this pig roast is a

real low and slow rotisserie.

I want you to build a

rotisserie.

It must run by human power.

It must be inspired by bicycles.

And it must have a speed

control.

Redbones will supply the grill,

and we'll use the winning

rotisserie at our next benefit

street party.

Good luck, Design Squads.

Don't blow it.

Yeah.

Rotisserie.

What do you guys think of

that?

Yeah.

Good stuff.

So a human-powered rotisserie

that's bicycle inspired.

And it's got to be slow, so you

need a speed control.

We want you to have some kind of

energy storage mechanism, which

is where that Rube Goldberg

machine comes in-- to inspire a

machine comes in-- to inspire a

couple of ideas.

And there's a big, huge grill

from Redbones outside.

Cool.

Sweet.

Are there any questions?

Do we get to go to the party?

Yes, you get to go to the

party.

Start brainstorming.

Yeah.

All right.

Yeah.

Anyone know how to unicycle

without any pedals?

Greasy.

Eww.

We have a lot of wheels, a

lot of bike wheels.

Yeah, brother.

When I heard what the

challenge was, I was pretty

excited.

I mean, coming from Texas, you

know, barbecue is in my blood.

A human powered bicycle theme

rotisserie?

That was a pretty cool idea.

Yo, you guys want to go see

the grill?

Yeah.

Come on, come on, come on.

I'll show you.

Let's check out how it turns.

This is the actual

rotisserie.

You guys are building the

bike-inspired human-powered

speed-controlled energy-stored

mechanism that makes it spin.

Where's the pig go?

Right in here.

Inside?

Uh-huh.

So our machine's going to

attach to this gear right here

that turns it, and that's it.

If your machine was to attach

to this whole thing in only one

place, that is definitely where

you'd want it.

All right, cool.

How are we going to get it

to go at a constant speed?

Don't they do that for, like,

clocks and things?

You wind them up, and that

doesn't matter, but the clock

has to go at a constant speed,

because it's a clock.

Like, I know my clock works with

weights, so when you crank it,

you life a weight up, and then

the weight falls down gradually.

Do you guys want to look on

the Internet, get some ideas?

I don't know how to draw a

pig.

Looks like bacon.

Has to be controlled speed, has

to be inspired by a bike, and it

has to have some kind of energy

storage, right?

Stored energy is called

potential energy, because it has

the potential to do work.

One way to build potential

energy is to raise an object

against gravity, like biking up

a hill.

Once at the top of the hill,

stored energy can now be used to

do work.

If a bike coasts down the hill,

gravity then converts potential

energy into kinetic energy, or

energy of motion, by pulling the

bike down the hill.

And there are many ways to

convert potential energy into

kinetic energy.

Yeah, like water.

Kind of like a water wheel.

Water?

Yeah, like water.

You know, I want to smack you.

How do you mean?

Like, as you pedal, for

example...

Try it.

Well, okay.

As you pedal... say this is the

back wheel of the bike.

Let's just say you pedal, it

drives water up.

Pedaling a pump.

Yeah, that'll force the water

into this big container, okay?

There's your potential energy,

because gravity will drive it

down.

Like, if you have cups in

here where you put water in,

like here, and this is a

rotisserie, so the water falls

down, it makes the big wheel

spin, which spins the

rotisserie.

So let's get started with a

design.

Want to draw it out?

Yeah, let's draw it out.

Yeah.

We were looking up how a

We were looking up how a

grandfather clock worked.

You have this special gear.

It's, like, a gear, but it's

shaped like that, kind of, so it

can only go in one direction.

And you have this thing called

an escapement.

And it's regulated by a

pendulum.

And so when it swings, it lifts

up on this escapement, which is

what allows the gear to turn.

And the thing that's causing the

gear to turn, a weight's

applying a force trying to turn

this gear.

So maybe we could use that,

like, if they pedal on the bike,

it'll wind up your weight, and

then as the weight falls, that

would be what turns our

rotisserie.

Could we build a sketch model of

an escapement just so we could

see if it works?

That's a really good idea.

We've got the gears to go on

this wheel, so therefore we can

turn it along with the wheel.

We can put some kind of sprocket

on the shaft of the rotisserie,

and then having a chain

connecting this wheel to the

sprocket on the rotisserie, so

that when this spins, the chain

converts the energy and spins

the rotisserie.

So we put this here, the

sprocket goes there, here.

That's where we're going to put

the other sprocket.

And you're going to use a

chain?

Yeah, the chain's going to

keep the sprockets right here.

Got you, got you.

And we can have the big tank

right there, dropping right

here.

Sure.

So the water will come down from

there, and it will hit this, and

it will turn that.

And as this turns, it'll turn

the rotisserie.

Right.

Cool.

How are we going to mount this

onto the grill?

Let's weld some pieces onto

the fork.

Sure.

And see where we can place

it.

Can you weld one here and one

here, just like this?

As close to the edge as you can

get it.

Okay.

Here, pick up the wheel.

That could work.

We're making a mockup of the

pendulum and the escapement.

This is the escapement, which

regulates the speed that the

wheel turns.

What's that?

What do you mean, what's

this?

Can't you tell?

It's not very symmetrical.

I can't tell nothing.

It's a mockup.

Don't worry, it'll be straight

in the final product.

This is the rod, and I'll be

attaching the weight to the end

of this.

Is it spinning?

Well, it could be better.

Do you like the other one?

Yeah.

We need a seat.

Let's see outside.

It's huge.

I like that seat.

I like that seat.

It's comfortable.

If you're on there for 40

minutes you should get a

comfortable seat.

Now, that's a seat.

Oh, yeah.

Whoo!

We should make a stand for

the bike.

Look at these bikes.

Do you know how to ride a

bike, Lindsey?

No.

Don't forget to wear a

helmet.

Don't miss the door.

Is this facing the right way?

All right, I've got all the

supports made.

And I just put all the nuts

and bolts.

Oh, that looks great.

Does it hold?

Oh!

Annelise.

My foot, man.

Wrap it up, D squads!

That's the end of day one!

All right.

Nice work.

If our team wins, then it'll

be a three-way tie for second

with me, Lindsey, and Juan,

which is really cool, because I

totally thought I was completely

out of the running.

I do feel the pressure of

this, but I try not to think

about it, and just try to keep

my team working.

All right.

What are we going to do

today?

Everything.

I guess we have your wheel

with the escapement that has to

attach directly to this.

Let's bring the forks of the

bike that we have, and the

wheel, to see where we're going

to place the measurements, and

let's cut some metal.

All right, let's go.

Sure, let's do that.

Yeah.

Let's get to work.

Go and do it.

We can put this piece on the

rotisserie.

This is going to be attached

to the shaft of the rotisserie.

I'm going to weld the bearing

to the gears.

That's really good.

Ready?

Watch this.

That's so cool.

Hi-h*, Green Team.

Hey, Nate.

I've got Rob from Redbones.

Hi, Rob.

How's it going, Rob?

Hey, how are you, guys?

Why don't you tell him what

you're buidling?

So we have a two part

system-- a bicycle that people

bike on, and it lifts a weight.

And then as the weight drops, it

turns this wheel right here.

But the speed at which the wheel

turns is regulated by an

escapement system.

Yeah, it's similar to a

grandfather clock.

This is just a mockup right now.

I really like the idea of

haiving a grandfather clock cook

a pig.

Slow roast, very slow.

That's a good one, yeah.

Nice meeting you.

Go for it.

Good luck.

Take it easy.

Hey, guys.

What's it going to look like?

What we're doing is using

What we're doing is using

water to power the rotisserie.

Water.

Yeah.

Well, the bike's sitting

here, which you pedal.

Yeah?

And then as you pedal, it'll

use the pump.

As you pump, water's going to be

coming down.

So the water dripping down is

going to turn this, which turns

this, which turns this.

Unbelievable idea, and I'll

believe it when I see it.

All right.

But I like it.

I like it.

Cool.

Nice work, guys.

Yeah, nice work.

Yeah, nice to meet you all.

Take care and good luck.

Thanks so much.

On this, there's a ratchet

system, so you can only spin the

wheel one way.

Right.

When someone's pedaling

backwards, the wheel doesn't

move.

What happens is if you pedal

backwards, it turns this.

This cranks up our weight.

And then when you stop pedaling,

the weight should fall down with

the potential energy spinning

the wheel forward.

And it should move the

rotisserie as well.

Figure right here?

Yeah.

And we line it up, it'll be

exactly on the Xs.

Sure.

All we need is to bring the

welder outside, put her on here,

it'll work.

We need to cut the pipe down.

Cut what pipe?

The steel tubing.

It's in the middle of the thing.

The middle of what?

What steel tubing are you

talking about?

This one?

It's fine.

We can do it later.

Whatever.

You want to cut it?

It's your scholarship.

Whatever you want to do.

I don't care.

Oh, that's a brilliant

attitude.

Don't talk to me about

attitude, dude.

Hmm?

They seem like a married

couple, Juan and Zach.

Juan does seem a little

stressed.

I guess it's because if Juan

wins this challenge, he's going

to be up with Wes for the

finale, so he wants everything

perfect, and, like, everything

to run smoothly.

So yeah, he's a little stressed.

If that's fine with you, then

it's fine with me.

I don't really care, as long as

it works.

If you want to cut it, I

guess we can cut it.

Is that going to give you

enough space to weld?

Yeah, it looks good.

All right, that's not going

anywhere.

Great job, Lindsey.

What are you welding?

Pump.

I'm actually going to weld this

to this, and I'm going to weld

this onto that.

Because this is going to go onto

the pump, so as this turns, it

turns the pump, and therefore

pumps the water up.

That's how you weld.

Great.

It's going good.

Now we've got a sprocket on a

pump to move the water.

Let me see.

Let me admire your work.

Okay, so we're good with this.

We just need to mount it to

the bike.

We just need something to keep

it there while we test it.

it there while we test it.

There you go.

Awesome.

Now I've got to drill holes

in the wheel so that I can

attach the cups.

Okay.

How beautiful.

Here.

Come over here.

How many of those can you make?

I made 12.

Can you put them all on here?

You want me to put them all

on there?

Yeah.

Okay.

How many holes did you drill

on here?

I drilled...

[speaking Spanish]

Like, in between each of these I

put one.

>>[speaking Spanish]

I'm sorry, man.

When I get stressed my Spanish

comes out.

This is the escapement.

Okay, so this is the water

mill.

It's done.

That looks cool.

How heavy is it?

Yeah, it's heavy, but it's

balanced.

Put it on, put it on.

Okay, close it.

Yeah, close it.

It has to be perfect, guys.

I don't want to blow this thing,

I don't want to have it be

screwed up.

Right there?

Okay, don't move it.

Do not move it.

Wait, wait, wait.

Hold it, Ana.

I'm holding it.

Oh, you mean put this one

there.

Is it on tight?

It's tight.

That's perfect.

I'm going to hold it.

Get the welder and weld it.

Are you kidding me?

No.

No joke, go.

Okay, perfect.

It's pretty lined up, man.

We've got quite a storm

coming.

I know.

Good thing we have this tent.

Sweet.

The escapement is attached.

That looks really good.

Good work.

How's it going up, there,

Zach?

We're going to put a tube

right...

What, like...

Like that.

Yeah, that'll work.

Let's do the pump.

You want to pedal?

That's a long hose.

That's going to take a lot of

That's going to take a lot of

pedaling.

Is the valve open?

Yeah, the valve's open.

Is there water going?

Yes, there is.

Yay!

It's filling up cups.

Yay!

Let's give it a try.

All right.

You guys ready to see this thing

go?

Yeah.

Let's do it.

Okay, I'm going to pedal

backwards to make the weight go

up.

So, weight's going up.

There goes the weight.

Ready?

Look, it's turning!

Oh, very nice.

Yo.

That's really nice, guys.

That's good, guys.

Nice work.

Nice job, Green Team.

All right, guys, I think we

did pretty well.

What do you guys think?

Yeah, it works.

I just want a hug.

I roasted the pigs last night

in our smokers.

Now we're going to finish the

off on the teams' rotisseries.

Let's see how they do.

Here we go.

I think I can get the hang of

it.

Oh, good.

Old school, the grandfather

clock.

I love it.

That's great.

Boy, I love these ideas.

It's working.

It's not smooth, but it's

consistently turning, and that's

what counts.

Beats pulling it by hand.

I want to give this pig the

taste test now.

Mmm.

Yeah.

That's some good pig.

I'm cooked.

Think I should have gone into

training for this.

This might make me go

vegetarian.

Here we go.

Wow, look at that.

Wow, look at that.

Hey, it works.

Yeah.

I love it.

The pig is looking good.

Wow.

Passes the taste test.

Uh-oh.

Wait a minute.

I guess it ran out of water.

Let's start pumping again.

Hey, Rob.

How's it going?

Good, how are you, guys?

Hey, Rob.

How do you like the Green

Team's design?

I like it.

Nice, steady rhythm.

It was a little clunky, but it

kept turning.

That was the key.

So that works sort of like a

grandfather clock.

It seemed to work.

Like clockwork?

I liked it.

Yeah, like clockwork.

If you want something for the

masses, something that's

entertaining, this is the one

for you.

I mean, don't get me wrong.

I know how endlessly

entertaining it is to watch a

clock do this.

If only water wasn't

entertaining, Niagra Falls would

have broken down a while back.

I get that, yeah.

The water and fire combination,

they go together.

Exactly, man.

Very different from the other

design, but a great inspiration

as well.

Why don't we go over there

and huddle up and talk about

which one really works the best?

Thanks, Rob.

Appreciate it.

Thanks, guys.

Bye, Rob.

I love them both.

I mean, they were both

inspirational.

Both designs were awesome.

They were definitely awesome.

I just think ours is better,

that's all.

He seemed to really like it.

It was fluid without all the

fluid, you know?

Oh!

Juan bashed on ours more than he

bragged about his.

I like my marketing.

I like your marketing, too.

Niagra Falls right there, that

was clever.

Here they come.

Good, I'm starving.

Design Squads, Rob has come

to a decision.

I want to thank you guys

first and foremost, because you

came up with some great ideas

here.

Green Team, you came up with a

seriously functional unit here.

The pendulum idea, it's a great

one.

I wish you had put the face of a

clock to add a little bit of

spectacle to it.

Purple Team, you guys got the

spectacle down.

I love the water.

I love that bike seat, too.

Thanks for thinking of me.

Because I had to work that bike.

Matter of fact, I had to work it

a little too much.

But I think the idea was a good

one.

If I had to cook that pig again,

though, I'd have to say I'd have

to go with the Green Team.

It's a little bit easier, and

that counts for a lot when

you're cooking a pig.

Thanks very much, guys.

Thank you, Rob.

So 100 points goes to each

member of Green Team, which puts

us in an interesting situation.

Going into the final challenge,

we have a three-way tie for

second.

Obviously, folks, Wes is in the

lead.

Now, our three-way tie is

between Annelise, Lindsey, and

Juan.

So we're going to have to have

So we're going to have to have

some kind of tiebreaker.

We'll worry about that later.

For now, let's eat some

barbecue.

Yeah.

If I would have won, I would

have tied Wes, and that would

have been the end of it.

We lost, so I tied you two, and

that's the end of it.

Lindsey and I think that our

team worked really hard and came

up with a good design and

ex*cuted well.

And we sold it without

bashing yours.

It was a marketing strategy.

Why didn't you just sell

yours?

That's because there wasn't

that much to sell about it.

It doesn't work as well as ours.

And you wouldn't take that as

bashing?

Well, she's bashing you now.

I think Lindsey and I are

just glad to be here.

We came from last place

together, so it's nice not to be

on the bottom anymore.

It's been a really long

journey.

I just want to see what they

come up with for the tiebreaker.

I'm excited.

Bring it on.

May the best engineer win.

There you go.

Wow, that's nice.

So will it be Juan, Lindsey,

or Annelise who will face off

against Wes in the final

challenge for the Intel

scholarship?

Hey, Lindsey, there's so much

more action on our Web site.

Yeah, behind-the-scenes stuff

like our blogs.

Not to mention you can watch

full episodes.

Play games and build cool

projects.

Awesome.

Let's go to pbskidsgo.org.

Coming up...

Your tiebreaker challenge is

to build a kite.

It's all or nothing.

Oh!

Your clients have come to a

deci