01x10 - Pumped

[bunniefuu]

Last time on Design Squadthe

competition heated up when the

teams had to build...

An automatic pancake machine

that will work in the touch of a

button.

Red Team simmered too long

over a design and just couldn't

stack up.

Blue Team served up a victory

and kept Natasha in the lead for

the college scholarship for the

fourth straight week.

We were really happy after

finishing our pancake maker just

because it was such a hard

challenge.

It was really strenuous at

the last minute.

I think we're all looking

forward to a new challenge.

We're glad the pancake challenge

is done.

♪ We've got two days

to get this straight

♪ Got a challenge

just won't wait

our eyes are on the prize

♪ Two engineers

just set the date

♪ 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 Design Squad...♪

Design Squad...♪

You know what this pool could

really use?

What?

A waterslide.

Like today's client.

That's exactly what they need.

Come check it out, design

squads.

Gather round.

Hi.

I'm Isaiah.

I'm Yvonnie.

And that's our brother Tamal.

This is where we spend the

summer, our neighborhood YMCA

pool.

It's our home away from home.

We have so much fun here, our

mom has the hardest time trying

to get us out.

We didn't think it would get any

better until...

We got a slide!

Now, there's just one little

problem.

I'm stuck, I'm stuck!

It can get dry, and you can

get stuck.

And that can seriously cut

into your sliding fun.

And that's where you come in,

design squads.

Here's your challenge.

We want you to build us a

human-powered water system that

will keep our slide wet.

Here are the specs.

It's an -foot-high spiral

slide.

You can attach anything to the

slide as long as it doesn't get

damaged.

It has to provide a steady

stream of water to keep the

slide wet and slippery.

The best system will be

installed right here at our

pool.

Ah!

Good luck, design squads!

Now, the slide's pretty tall.

It's feet.

So we've created a full-scale

mock-up to the exact dimension

for you guys to use.

Both teams will get $ to shop

at Home Depot.

That's where you can buy

anything you want in addition to

using whatever you find in the

shop.

All right, now get

brainstorming.

brainstorming. You're blocking our rays.

You're blocking our rays.

They want a human-powered

waterslide.

Water pumps.

Water pump.

Pump.

Pump is the word.

It doesn't have to be, you

know, a large amount of water.

We just have to make it wet so

they slide.

That kind of water well-type

hand pump might also work out

pretty well.

We have air pumps.

I don't want them to get them.

We've got to figure out where

it lets air in.

Let's think about how it

works.

So it draws water in...

Traps it, and then forces it

out another place.

The inlet's blocked, and then

this one opens.

I was kind of thinking about

something along those lines.

One-way valves?

Yeah.

Okay, same plunger idea, with

a one-way valve there letting

water in and a one-way valve

there letting water out.

Tom's right.

Blue Team can use two one-way

valves, or check valves, to make

a pump.

And here's how.

A swing check valve has a hinged

disc.

Water flowing in one direction

swings the disc open.

Water flowing in the opposite

direction pushes the disc

closed, stopping or checking the

flow of water.

So when the piston pulls up, the

inlet check valve lets water in.

And when the piston pushes down,

the outlet check valve lets

water out.

Pretty simple.

I think it'll work.

Water wheel.

Yeah.

We run two very tense ropes,

and then on those ropes we

connect the water holders every

so often.

So buckets, basically.

One think I'm worried about

with that is it has to be a

constant flow of water.

If we put the holders really

close together, then it's almost

a constant flow.

It's going to be way too

cumbersome, like, this huge

thing next to the slide, like...

We settled on it so quick and

I'm afraid that we're not

thinking enough outside the box.

Like, we're not thinking about

other ways that...

Maybe we settled on it quick

because it's the best idea

that'll work to get us the most

water.

Now we're thinking the client

wants fun.

And if another person has to

pump for him, you know that

person's not having fun.

Instead of having a handle...

Yeah.

...it's, like, a seat.

And then it squirts all the

water out using the weight of

the kid.

Why don't we make it a

seesaw?

Something like this, one on

either side?

Oh, I got it.

We'll make two of these...

Yeah, yeah.

I was going to say that.

Game over.

Game over for Red Team.

All right.

I love that.

That was the best idea.

Really?

Really.

Huh.

Everything is going extremely

easy right now, which is scaring

me, actually.

We brainstormed really quickly,

came up with an idea that was

simple, which is weird.

I've never come up with an idea

so fast that was so simple.

I'm pumped.

On a team with two guys and

two girls, the two guys will

automatically, like, power out

the girls' ideas, because

they're like, "What do you know

about this?"

And then the two guys will have

two separate ideas, and they

will go head to head forever

about which one they're going to

use.

But with three guys that all

agree on one thing, we have a

really powerful team.

Okay.

So speaking of pumps...

I just came up with this new

idea, and it uses sponges

instead of our other material.

We create this, like, line of

sponges, right?

And there's this roller

squeezer-ma-jig.

And as it squeezes the sponges,

we just empty it out into the

reservoir.

I think that's a lot simpler

than the water wheel.

It's like a water wheel.

It's like a water wheel with

sponges.

Only thing we have to think

about is how to attach the

actual sponges to the ropes.

We can, like, sew in one...

Oh, that's good.

Yeah, we can sew them on.

For this shopping list...

Sponges.

So many sponges.

Like car wash sponges.

What we're going to need is

big PVC, two one-way valves,

rubber plunger here.

This is a check valve right

here.

What's so fancy about this?

It only lets the water go in

one direction.

So we need four of these,

because we're doing two sets of

water pumps.

What else do we have?

Plunger?

Yeah, plunger.

Mine fits.

Yeah.

They work for all of them.

The stick is way too short.

We could even get broom

We could even get broom handles.

handles.

We should probably get to

work.

Maybe in a little bit.

Maybe in a little bit. Maybe in a little bit.

Maybe in a little bit.

If it comes up first, then it

never hits anything on its way

up, which'll keep more of the

water intact.

That's why I was having it come

up through.

Giant sponge.

So, like, one and a half of

these is a foot.

We need feet of sponges.

So we have to get sponges.

They're cents.

Hey, guys.

We bought sponges.

Ow.

I can't believe you stuck

this to your butt.

We decided to test it in

four-inch PVC, and it fits

like...

A glove?

Yeah.

What we did while you were

gone, we made our handles.

We're assembling our base.

It looks kind of wobbly.

What are you going to do to

reinforce it?

We're going to attach these

two pieces with a piece of wire

so that when the force is

exerted this way on the entire

structure, these two pieces of

wood will want to separate, but

the wire can take up all of the

tension.

We're also going to put pieces

of wood between here and here so

that it doesn't wobble as much.

Have you figured out how high

you're going to make that?

We'd have to have the maximum

height of the pump when it's out

be at least this high.

So what have you guys been

doing?

We've been talking about

mounting it all day.

It's just really a challenge to

mount the thing.

You don't think it is, but

that's because you haven't

thought about it.

See?

Right here you want it to be

over the middle, right?

Even if you have it from back

here, it's going to run across

the slide, which means there's

pretty much no water left.

The problem with it is was

hitting the slide, right?

That's one of the problems,

yeah.

Okay, so...

So to fix that problem what

we do is we take pipe like this,

and the sponges will go along

this as they're going down

instead of going up and down the

slide.

All right, but you've just

moved the problem out two or

three feet.

The water's still going to come

off when it hits something.

Every time the sponge hits

something...

Gently glides against is very

different than hits.

No, but there's going to be

tension on the rope.

Someone's pulling this rope.

We know.

I know.

Well, why don't you actually

test that idea?

Because if you just pull it...

Did you guys test it?

Yeah.

All right, so that's one of

the problems.

What's the other problem, Kim?

They're going to be heavy.

It's going to be too hard to

pull.

You don't want it to be too hard

to pull.

The rolling gently across the

tube has no impact.

Rolling gently?

Yeah.

The person's not going to be

pulling like this.

You don't need to.

It's not going to lose all

the water, but it is going to

lose some of its water.

And you want to try to have it

not.

Well, as long as there's

enough water left in the sponge,

that's all that matters, right?

But I guess we should all

just work on making a pump

first.

It's not airtight, I'll tell

you that.

It's kind of lousy.

Instead of just using this

with a piece attached, you

attach the top of the PVC cap

that we said would fit inside

the four-inch tube already.

Like that.

Slides through.

We need the intake to be up

towards the top of this, and we

need the outtake...

Both at the bottom.

Both at the bottom.

Because think about it.

ready?

The only reason it's intake is

because it's trying to, like,

suck up the air that's, like,

being displaced.

So if it's at the top, it's just

not...

I still don't understand the

whole hitting the slide issue.

I don't understand why we can't

do that.

If you are going to do it,

then by all means to it, but I

wanted it so that when the

sponges got up there they had

full water still in them.

All right, let's try

something.

Let's try something.

Pretend that's the piece of

wood.

As it comes up, it's going to

hit this at an angle.

How much water's in there?

That still is plenty of

water.

I don't see what the problem

is.

We're almost done with the day,

so let's just, like, pick a

design that's, like, simple and

easy to build, we know we can

finish it tomorrow, and, like,

just go with it.

Do we have the rollers

designed, where they're going to

be attached?

Like for this design, or for

you design, or...

For a design.

Do we know where the rolls are

being attached?

It depends.

It depends on the design.

We haven't picked one.

Like, for yours...

You're shaking your head no.

Why?

No, we don't.

We don't have the rollers

designed for any of these.

Originally...

How about this?

This is the top view, and then

here's the slide, right?

So we attach a strip of wood

here, a strip of wood here, and

then we put two pieces of wood

like this.

And we use those pieces of wood,

and we drill holes through them,

we just put the rollers right

there.

The sponge loop comes up, goes

through those rollers, and then

just comes back up.

But then it's the same

problem.

It's going to run over the wood.

It's going to be making an

angle.

It's going to make an angle

anyway.

There's no way we can not make

an angle with this.

I know.

But it's...

No, explain.

No, because you don't listen.

I've already explained it to

you, like, four times.

And I explained my whole idea,

and you didn't listen to a word

of it.

And I'm frustrated, because

Natasha and I have been thinking

about it all day.

I'm afraid that this is going

to get in the way of kids,

though.

What if they, like, bump their

head or something?

You can't really mount right

there, because it's just a

plastic thing.

And if you mount right there

it'll hit the kids' heads.

We have a half an hour today.

What can we get done today?

The sponges, they need to be

sewed.

We need two people on this

structure, and we need two

people...

To sew the sponges.

Structure.

I'll be... I'll do the

sponges.

I can sew.

Do you want to work on the

structure?

Okay.

I feel like team red did not

do well today.

There is no team chemistry.

We're not working together at

all.

I was hoping that some of the

design would be done when I got

back from the shop, but I'm not

sure what happened.

It seemed like they argued most

of the day and were unable to

really get anything done.

Time's up, design squads.

Time's up, design squads. That's it for day one.

That's it for day one.

Hey-oh!

All right.

So guys, I was thinking about

the sponges last night.

What if we doubled it up and

sewed it as if it's a pocket,

and it can still get soaked up

on the sides?

We're going to make them in

smaller sections and then just

sew it all together later.

It can' be closed here,

though.

Why?

We can always cut that.

So why don't we just cut it

now?

Because we don't need to cut

Because we don't need to cut it now until we're done.

it now until we're done.

I'm, like, afraid to, like,

pull on these things, though,

like, just to test them.

I don't want to be the first...

No, go ahead and pull them.

Break it.

Try to break it.

If I do break it, are you

going to k*ll me?

Nope.

I think we'll be glad that we

found out it breaks before we

actually used it.

It sucks in air here, and

then it blows it out the other

way.

Yes!

Yes! We should go out to the pool.

We should go out to the pool.

That's so violent.

That's so violent. Careful.

Careful.

Careful. Yeah, it's just a lot of air.

Yeah, it's just a lot of air.

I feel like the epoxy's,

like, breaking down.

When I put my hand on it it

comes out, like, sticky.

Back to the shop.

No, listen.

We're going to sew the sponges

in by hand and then use the

sewing machine for this.

The sewing machine can't go

through the sponge because it's

too fat.

I can do it.

I know you can.

I'm not saying you can't.

But I don't think you can do it

in the time we have.

Yeah, I can.

Yeah, I can. I'll make it happen.

I'll make it happen.

All right, do it.

I'm not going to fight you

anymore.

You really don't want to?

No, just do it.

It doesn't matter.

I'm tired of fighting about it.

I'm tired of fighting about it. Let's just get this done.

Let's just get this done.

We can almost test this,

guys.

Ready?

It works.

So you got a test in already?

Yeah.

We did have a couple of good

streams but we still have a lot

of burping.

Burping?

It would just, like, make

horrendous noises.

I think the technical term

for that is "blow by."

And here's why.

It takes pressure to pump water

up to a higher level.

And the higher the slide, the

greater the pressure is needed

for water to reach the top.

So when Blue Team tried to pump

water to the top of the slide,

the plunger seal buckled under

the pressure, and the water

leaked, or blew by the seal,

creating a gurgling sound.

I was just thinking maybe

sandwiching it.

That's an excellent idea.

All you need is to take a piece

of material.

Traditionally leather is used.

So you could use any fairly

coarse material, even felt.

Didn't you guys have some felt

left over?

Yeah, from the dress design.

Just take two pieces of wood

that are cut in a circle, kind

of like this, and then in

between them you sandwich a

piece of felt.

And then you can make a bolt go

through it, put a nut on each

end, and tighten those two ends

end, and tighten those two ends together.

together.

I just cut a circle out of

this.

Is that a circle?

See if it fits in there.

And... yeah.

Good seal.

Petroleum jelly.

Good for the skin and good for

your pumps.

It just doesn't allow water to

pass through the felt so easily.

We are going to make longer

strips.

Longer than this?

Yeah, that's wicked short.

You told me to cut it that

way.

No, I didn't.

I said to cut it wicked long and

then...

I did.

And I folded it, and you said

that's great, and I cut it, and

it turned out to be like this.

If you want it longer than this

I can do that.

Yeah.

Okay.

And we decided each sponge

needs one foot, right?

That's how we did it on that

one, a foot to each sponge.

So every one foot you're going

to do a seam.

These pieces of wood are

going to be attached right here.

And then the rollers... this is

the actual notch for the

rollers.

It'll be drilled so it won't

wobble in either direction,

wobble in either direction, hopefully, if I do it correctly.

hopefully, if I do it correctly.

Yep, it worked.

Guys, these work.

They work?

Yeah.

Oh, I want to see it.

Oh, I want to see it. Can we do it again?

Can we do it again?

Sweet.

That's awesome.

You did a really good job, you

guys.

I like it.

I think that my team really

did well today, because we

realized how little we

accomplished yesterday and how

much we were fighting and how

much frustration there was.

We each individually decided

that we should work as a team

that we should work as a team and try and get everything done.

and try and get everything done.

That thing looks incredibly

stable.

stable. Hop on.

Hop on.

It's pretty sturdy.

All right, now let's talk

about the pumping part.

We have about an hour and a

half.

Where are we going to put this

thing?

Right there would be perfect.

Right there would be perfect. Rock and roll.

Rock and roll.

We're going to need a

probably two-by-eight out here,

probably two-by-eight out here, like so.

like so.

Are you guys about ready to

mount that on this?

Yes.

Yes. We're ready when you are.

We're ready when you are.

Should we take this outside

Should we take this outside for a test before we put this...

for a test before we put this...

Great.

Should be okay.

Ready?

No.

No, I'm not.

Ready?

Okay, go.

Okay, go. You go down first.

You go down first.

[ cheering]

Yeah!

That's a heck of a pump!

I haven't felt this excited

since day one of the drag race.

I mean, oh, I just love this

feeling where it works.

Yes!

I was watching the Blue

Team's machine, and it's very

cool.

The only thing I'm worried about

with their machine is the appeal

of having a seesaw when it's

really hot out.

We're going to wet these

sponges, and then we're going to

pass it up to Noah, who's going

to feed it through the rollers.

I think our design is really

cool, because the person doing

it can be in the pool and

cooling off at the same time.

So I think we have a pretty good

chance of winning tomorrow.

The only think I'm kind of

worried about is if our actual

sponge ring is too heavy for the

kids to pull.

That would be the only downfall.

And if that happens we can just

yank some sponges out.

Look at how much water

Look at how much water squirts out each time.

squirts out each time.

It's definitely working.

I'm soaked.

And this thing is getting

soaked, too.

It's actually working really

well.

We just need to finish the

loop and put more sponges in.

It's going to be fun to be

under that thing, because you

get soaked.

Some of the sponges, they

need to be reinforced.

Like, they need a lit of

stitches, actually, because

they're under a lot of tension.

A little wet, still.

We've just got to get this

We've just got to get this finished.

finished.

We have ten more to do, and then

the entire loop is done.

the entire loop is done. Can't wait to go to the pool.

Can't wait to go to the pool.

Hi, design squads.

Hey, guys.

You guys ready to see the

water systems?

Yeah.

All right, let's go do it.

This is our water system.

And it's basically a water wheel

with sponges.

At the very top the sponges act

like a waterfall, hitting the

person on the slide as well as

the slide itself, wetting it and

the slide itself, wetting it and having a fun slide down.

having a fun slide down.

Having fun?

Oh, yeah.

It's actually working really

It's actually working really well.

well.

It's kind of hard to pull

because the sponges are so

because the sponges are so heavy.

heavy.

It was so fast.

It's ridiculously fast.

Blue Team, you guys are all

set up and are ready to go.

Tom, why don't you give the

clients the rundown?

So what we did was we made

two pumps and then put it on a

seesaw for some fun factor.

Each pump is a piece of PVC with

two one-way valves a the bottom.

It sucks in water from the pool

from this end, and then shoots

it feet in the air to the top

of the slide.

It's fun for the whole family.

Are you guys having fun?

Yeah.

Yeah.

It's a lot better than

pumping by hand.

Whee!

Whee! You might need a seatbelt.

You might need a seatbelt.

Oh, that's so much fun.

Oh, that's so much fun. That was awesome!

That was awesome!

Which system would you guys

rather use all summer long?

I thought the sponge system

was pretty cool, but it was kind

of hard to pull due to the

weight of the sponges once they

got wet.

What'd you guys think of the

teeter-totter design that the

Blue Team built?

That was really fun.

I mean, it was creative.

Also I liked how the water

came down.

It was enough to actually wet

the whole slide.

All right, teams.

Yvonnie and Isaiah have made

their decision.

You guys want to tell them what

it is?

Well, we really like the

sponges.

But the whole object of the

thing was to make a steady

stream of water.

That makes the Blue Team the

winner.

Backward five.

Congratulations, Blue Team.

points to every member of

your team.

We would like to present Host

Solution Number One...

And Host Solution Number Two.

Now, using these high

pressure syringes we built, we

can take water from the pool and

sh**t it all the way to the top

sh**t it all the way to the top of the slide.

of the slide.

It was a washout for Red Team,

but that didn't dampen Natasha's

lead as she stretches her

winning streak for the fifth

straight week.

All right, Deanne, here's a new

challenge: describe the Design

SquadWeb site in ten seconds.

Go.

There are games, photos, new

challenges, videos, quizzes,

scoring updates...

Time's up.

Ugh!

Ugh! Just go to pbskidsgo.org.

Just go to pbskidsgo.org.

Being an engineer and having

my car I look at cars in general

just differently from other

people.

I look at everything and I

think, "How can I improve this,"

or "How does this work?

What makes it tick?"

I bought my car while I was in

college for bucks, and then

as I gained more knowledge in

machining I would start making

and fabricating my own parts for

it.

You get to the top of a run in

hill climbing, you're gripping

the wheel, white knuckles, and

you're like, "I almost k*lled

myself.

Let's go do it again!"

When most people think of

engineering they think of the

dorky guy, and it's pretty much

true.

I mean, but you make it cool

because you know what?

I'm the geek that made the Mars

Rover, or I'm the geek that made

your rollercoaster.

I didn't think that I had the

math grades to become an

engineer.

You don't have to be a straight

A student.

You don't have to be a

superstar.

You don't have to be honor roll.

You know, you just really have

You know, you just really have to want it.