Will a Segway work on a Treadmill?

Will a Segway work on a Treadmill?

Author
Discussion

arun1uk

Original Poster:

1,045 posts

200 months

Friday 17th February 2012
quotequote all
Well, can they? I'm in the pub, this topic has just come up, don't ask why...

I think yes. If you set the speed on the treadmill to a steady amount, and are able to match the speed of the Segway, it should work. Shouldn't it?

My friend thinks it won't, and that it'll just wobble and fall over.

Discuss. Show your working.

Stedman

7,236 posts

194 months

Friday 17th February 2012
quotequote all
I have no idea, but found video and it made me laugh a lot biggrin

mybrainhurts

90,809 posts

257 months

Friday 17th February 2012
quotequote all
No way it'll take off...

klarky

70 posts

177 months

Friday 17th February 2012
quotequote all
Search you tube, videos of it on there so answer is yes!

patmahe

5,776 posts

206 months

Friday 17th February 2012
quotequote all
Not another treadmill thread! wink

mybrainhurts

90,809 posts

257 months

Friday 17th February 2012
quotequote all
Stedman said:
I have no idea, but found video and it made me laugh a lot biggrin
rofl

arun1uk

Original Poster:

1,045 posts

200 months

Friday 17th February 2012
quotequote all
But why does it work on there?! I want to understand the physics of it (I need to prove a point)

Come on beards, it's a Friday night, surely you'll be internetting instead of going out?

Robb F

4,578 posts

173 months

Friday 17th February 2012
quotequote all
Because it can only sense wheel speed not ground speed.

You lean forward, it makes the wheels turn. So if the treadmill will moving at a constant speed the person would have to lean at the right angle constantly to match the treadmill.

Eggman

1,253 posts

213 months

Friday 17th February 2012
quotequote all
The thing balances itself by accelerating and decelerating the wheels to keep them under the centre of gravity, so as long as the treadmill isn't too free running or going faster than the segway can manage it should be able to balance itself.

If the segway couldn't stand up on the treadmill, chances are you couldn't either. It balances itself by keeping its wheels under the COG, whereas you balance by moving your COG so it's over your feet, but I would expect the forces on the floor to be similar either way.

Otispunkmeyer

12,675 posts

157 months

Friday 17th February 2012
quotequote all
Course it'll work. Its just like putting an RC car on the tread mill and modulating the controls so that its wheels are turning fast enough to keep it stationary. On a segway you just lean forwards to do this.

ATTAK Z

11,558 posts

191 months

Friday 17th February 2012
quotequote all
It'll never work ... just remember how the guy that invented the Segway died ... failing to keep up with the force of gravity

wolves_wanderer

12,421 posts

239 months

Friday 17th February 2012
quotequote all
mybrainhurts said:
No way it'll take off...
Yes it will.

Flibble

6,477 posts

183 months

Friday 17th February 2012
quotequote all
http://www.youtube.com/watch?v=NEN9iGBLKck
Seems to work... no sign of it taking off. wink

Hooli

32,278 posts

202 months

Saturday 18th February 2012
quotequote all
mybrainhurts said:
Stedman said:
I have no idea, but found video and it made me laugh a lot biggrin
rofl
And another rofl

mrmr96

13,736 posts

206 months

Saturday 18th February 2012
quotequote all
Robb F said:
Because it can only sense wheel speed not ground speed.

You lean forward, it makes the wheels turn. So if the treadmill will moving at a constant speed the person would have to lean at the right angle constantly to match the treadmill.
But the way a segway works on solid ground is to "catch" you before you fall. I.e. you lean forward so your Centre Of Gravity is in front of the machine, so it moves the base. This means that the net direction of the combined forces of gravity and propulsion means your CoG is "in line" with the wheels, and they bear your weight.

On a treadmill this can't happen, so your CoG always has to be above the wheels, as you're not moving in space.
The way to overcome this is to lean the segway forward (so it's tilt switches are activated) but you're not actually tilting your body, because you have to keep your CoG static.

Hope that makes sense?

Robb F

4,578 posts

173 months

Saturday 18th February 2012
quotequote all
mrmr96 said:
But the way a segway works on solid ground is to "catch" you before you fall. I.e. you lean forward so your Centre Of Gravity is in front of the machine, so it moves the base. This means that the net direction of the combined forces of gravity and propulsion means your CoG is "in line" with the wheels, and they bear your weight.

On a treadmill this can't happen, so your CoG always has to be above the wheels, as you're not moving in space.
The way to overcome this is to lean the segway forward (so it's tilt switches are activated) but you're not actually tilting your body, because you have to keep your CoG static.

Hope that makes sense?
I understand your logic, but it is not what physically happens. The video above proves that.

It doesn't matter if the ground beneath the wheels is moving or not, the segway will behave the same.

Imagine the tread mill was as big as the eye could see in any direction. If moving at a constant speed, you would not know the floor was moving, and you would be able to drive a segway as normal.

Its exactly the same with the fact the earth is spinning with you on it, you just happen to be moving at the same speed.

FreeLitres

6,071 posts

179 months

Saturday 18th February 2012
quotequote all
mrmr96 said:
But the way a segway works on solid ground is to "catch" you before you fall. I.e. you lean forward so your Centre Of Gravity is in front of the machine, so it moves the base. This means that the net direction of the combined forces of gravity and propulsion means your CoG is "in line" with the wheels, and they bear your weight.

On a treadmill this can't happen, so your CoG always has to be above the wheels, as you're not moving in space.
The way to overcome this is to lean the segway forward (so it's tilt switches are activated) but you're not actually tilting your body, because you have to keep your CoG static.

Hope that makes sense?
Erm... The chap 4 posts up showed one working on a treadmill?

mrmr96

13,736 posts

206 months

Saturday 18th February 2012
quotequote all
Robb F said:
mrmr96 said:
But the way a segway works on solid ground is to "catch" you before you fall. I.e. you lean forward so your Centre Of Gravity is in front of the machine, so it moves the base. This means that the net direction of the combined forces of gravity and propulsion means your CoG is "in line" with the wheels, and they bear your weight.

On a treadmill this can't happen, so your CoG always has to be above the wheels, as you're not moving in space.
The way to overcome this is to lean the segway forward (so it's tilt switches are activated) but you're not actually tilting your body, because you have to keep your CoG static.

Hope that makes sense?
I understand your logic, but it is not what physically happens. The video above proves that.

It doesn't matter if the ground beneath the wheels is moving or not, the segway will behave the same.

Imagine the tread mill was as big as the eye could see in any direction. If moving at a constant speed, you would not know the floor was moving, and you would be able to drive a segway as normal.

Its exactly the same with the fact the earth is spinning with you on it, you just happen to be moving at the same speed.
In order not to fall your CoG has to be in line with the wheels. Since you're not moving there's not force on you side to side, so you HAVE to be above the wheel of the segway.

So you have to trick the segway into thinking you're leaning forward, by leaning the segway but not your body.

(same thing as I said above.)

Robb F

4,578 posts

173 months

Saturday 18th February 2012
quotequote all
Its too late to be thinking this hard laugh

gonzales

591 posts

213 months

Monday 20th February 2012
quotequote all
Can't see the vid in work but I would imagine that the segway is too wide to fit on a normal treadmill - at the ones at my crappy gym anyhow. One of those magic carpets at airports though should be fine.