4" body lift.

[The Lovely Boyo]

Three minutes late.

Damn, bugga, blast

[surfenstein]

Damn, bugga, blast

[Linda]

didnt they use to fill tractor tyres with water to get the same effect.

Yep - our tractor leaks like a goodun if its left parked for any length of time. Was also for ballast though

[da SLUG man]

a 36" tyre half full of water is no fun to drive!!

it gets to about 20mph and then starts to shake itself to peices!!

[Apache]

Centrifugal force. They will always move to the outermost point which allows
them to remain stationary. If it's unbalanced, they won't stabilise, and will keep
shifting, until they reach the spot where balance is achieved.

But... the outermost point will be the point which is heaviest already. Simple physics innit? At that point, 'g' will be highest because it will have the highest angular velocity, so stuff will tend to gather there.

I know if this stuff works, then I must be wrong, but I dont know how.

[MattF]

But... the outermost point will be the point which is heaviest already. Simple physics innit? At that point, 'g' will be highest because it will have the highest angular velocity, so stuff will tend to gather there.

Following your equation, g would also be the point which has the tendency
to throw itself outwards, so it would always be vibrating. Nothing would settle,
thereby moving around until it reached a point opposite where stasis is finally
achieved. Nothing would actually be permanently stable and in place, but it
would be as close as.

[MattF]

Another way to look at it. Take the old bucket of water trick. There you have
rotation coupled with sidewards movements from the arm joints, which should
theoretically cause something to be all over the place. However, when you reach a certain speed, the water is trying to go outwards, the bucket is holding
it in, which also dampens the movement from your own arm as you have a force
pulling upon it at all times. You end up with a jerky non controlled rotation
becoming a dampened, speed controlled rotation.

[Apache]

Another way to look at it. Take the old bucket of water trick. There you have
rotation coupled with sidewards movements from the arm joints, which should
theoretically cause something to be all over the place. However, when you reach a certain speed, the water is trying to go outwards, the bucket is holding
it in, which also dampens the movement from your own arm as you have a force
pulling upon it at all times. You end up with a jerky non controlled rotation
becoming a dampened, speed controlled rotation.

Mmmm, I see that, so basically you could have a kind of 'fake' balance. The wheels mass around the rotation point is not necessarily even but the moveable mass damps out the vibration that the uneveness would otherwise cause.

Think I'll stick to lead weights. Sounds like snake oil... Bobbox, where are you?

[MattF]

Think I'll stick to lead weights. Sounds like snake oil... Bobbox, where are you?

[dave.j.robbo]

Think I'll stick to lead weights. Sounds like snake oil... Bobbox, where are you?

Not scared of science, are you..??

[Apache]

Not scared of science, are you..??

Seem to remember there was no science offered last time we did the bobbox thread...

Lots of 'this sealed box makes everything great', but no science at all.

[dave.j.robbo]

Seem to remember there was no science offered last time we did the bobbox thread...

Lots of 'this sealed box makes everything great', but no science at all.

We needed to find someone clever enough to find out how it worked.....
but we couldn't...

[Apache]

We needed to find someone clever enough to find out how it worked.....
but we couldn't...

Touche!

I'm still happy to take yours apart, assuming it's not sealed so you cant tell it's just a resistor in a bit of potting compound

[dave.j.robbo]

Touche!

I'm still happy to take yours apart, assuming it's not sealed so you cant tell it's just a resistor in a bit of potting compound

To be honest, I think it will be all potted. I took the plug apart a while ago (it's just a 9pin D-type), and that was internally potted. I'd be surprised if the rest of it wasn't..
Anyway, it seems that someone's found a cheap (free) way of doing the same thing now!!

[Apache]

To be honest, I think it will be all potted. I took the plug apart a while ago (it's just a 9pin D-type), and that was internally potted. I'd be surprised if the rest of it wasn't..
Anyway, it seems that someone's found a cheap (free) way of doing the same thing now!!

Turn the screw on the fuel pump?

It's only like buying the ball bearing from eBay really isn't it? Just a bit more expensive...

Never mind eh, if it does what you want and you're happy, who cares?