West gate upgrade, good job for us !

It is interesting how the deck pipe goes up the passenger side of the truck. Why is that? Is that the only manufacture that does that. Someone mentioned it. I have to ask. Does the toilet spin counter clockwise or is that an urban legend? 

Drew AUS

Very slick looking remote ! ;~)

Seed remember im in australia so it goes up the drivers side , toilet?? ok maybe im not up with your lingo !

I wish there was a toilet on the machine it would make life a lot better lol

Too funny! I could not resist. Good day mate!

toi·let  (toilt)

The whirl pool of water (rotation) here spins counter clock wise. Supposedly, because of the earths rotation is opposite direction? Below the equator.

killer volvo and i really like the rear bumper. iam allways worried about getting rear ended or backing up and ramming something.

seed

All Japanese pump manufacturers used to have the deck pipe on the RH side. Now there is only one Japanese manufacturer (Kyokuto). There used to be about six of them in Japan.

Are you messing with me b-alto? Nzpump, How long did it take for the other manufactures to fall out of the market? Are their pumps still around and working? Where do they get the parts?

Thanks,

Seed

The IHI was the same way. NZ you guys has some IHI pumps in NZ right???

No, I just heard in Austrailia the water rotates the other way.

ha ha u guys saw that simpsons episode too huh!!

Seed,

The Coriolis force does influence long-lasting vortices.

Hurricane Andrew

On the scale of hurricanes and large mid-latitude storms, the Coriolis force causes the air to rotate around a low pressure center in a cyclonic direction. Indeed, the term cyclonic not only means that the fluid (air or water) rotates in the same direction as the underlying Earth, but also that the rotation of the fluid is due to the rotation of the Earth. Thus, the air flowing around a hurricane spins counter-clockwise in the northern hemisphere, and clockwise in the southern hemisphere (as does the Earth, itself). In both hemispheres, this rotation is deemed cyclonic. If the Earth did not rotate, the air would flow directly in towards the low pressure center, but on a spinning Earth, the Coriolis force causes that air to be deviated with the result that it travels around the low pressure center.

In the accompanying picture of the Caribbean, one can see the cyclonically spiraling clouds of Hurricane Andrew (at the mouth of the Mississippi) and of another vortex in the Atlantic.

But, the Coriolis force is very small, indeed.

water draining in the supposedly wrong way

Compared to the rotations that one usually sees (tires on a travelling automobile, a compact disc playing music, or a draining sink), the rotation of the Earth is very small: only one rotation per day. The water in a sink might make a rotation in a few seconds and so have a rotation rate ten thousand times higher than that of the Earth. It should not be surprising, therefore, to learn that the Coriolis force is orders of magnitude smaller than any of the forces involved in these everyday spinning things. The Coriolis force is so small, that it plays no role in determining the direction of rotation of a draining sink anymore than it does the direction of a spinning CD.

The direction of rotation of a draining sink is determined by the way it was filled, or by vortices introduced while washing. The magnitude of these rotations may be small, but they are nevertheless gargantuan by comparison to the rotation of the Earth. I decided to include a picture of a draining sink, and the first one I tried in my house was found to drain clockwise (the opposite of what the silly assertions would have it do here in the northern hemisphere). This direction was determined entirely by the way the tap filled the sink. The direction of rotation of a draining toilet is determined by the way the water just under the rim is squirted into the bowl when it is flushed.

Is it possible to detect the Earth’s rotation in a draining sink?

Yes, but it is very difficult. Because the Coriolis force is so small, one must go to extraordinary lengths to detect it. But, it has been done. You cannot use an ordinary sink for it lacks the requisite circular symmetry: its oval shape and off-center drain render any results suspect. Those who have succeeded used a smooth pan of about one meter in diameter with a very small hole in the center. A stopper (which could be removed from below so as to not introduce any spurious motion) blocked the hole while the pan was being filled with water. The water was then allowed to sit undisturbed for perhaps a week to let all of the motion die out which was introduced during filling. Then, the stopper was removed (from below). Because the hole was very small, the pan drained slowly indeed. This was necessary, because it takes hours before the tiny Coriolis force could develop sufficient deviation in the draining water for it to produce a circular flow. With these procedures, it was found that the rotation was always cyclonic.

Why do teachers claim that a draining sink reflects the rotation of the Earth?

A surprisingly large number of my undergraduate students tell me that their high-school teachers told them that sinks drain in opposite directions in the two hemispheres owing to the rotation of the Earth. Why would a teacher offer such garbage to students when it is so easy to check. A trip to the school washroom (let alone the ones at home) will reveal drainage in both directions (which would certainly require the equator to assume a tortuous track through the countryside).

Is knowledge just a bunch of abstractions to be memorized with no recourse to the relevance of everyday experience?

Sigh... I don’t know why teachers do this. I can but assume that those who do so just never feel any need to wash their hands --- or their minds.

In the nineties most of the Japanese pump manufacturers stopped producing. There used to be IHI, Niigata, Mitsubishi, Kyokuto, Taihou, Daiichi, Pan-Ocean. If might have forgotten to mention one or two. Now there is only Kyokuto still manufacturing. A lot of the piston pumps were odd-ball, gate valve, S-valve. Every manufacturer had their own radius elbow. The radius of most of their elbows is to tight resulting in a lot of blockages. Most of the older pumps in NZ are used pumps ex Japan. We have to stock about 8 different 90deg. boom elbows to supply our customers. Even their 5.5" pipe sizes are slightly diffrent.

Oh and the water drain anti-clockwise here. Hope you are not too cold up in the northern hemisphere. I will just go outside by the pool and have a beer.

OK OK now i get it !! LOL ive never realy taken the time witch way it goes!

The pump i operate is manufactured in austraila boom and legs from coime , im pretty sure all of powercretes pumps have the deck pipe up the right hand side, for us i think its a good thing we have the control panel on the left side because the mixer drivers and the opeerator usualy hang out there so the deck deck pipe is on the other side maybe in the states its on the left  for the same reason .

Bob i like the pic of hurrcane Andrew hehe thats me! But i cant be botherd reading all of that post , although the first part was good !

 Drew AUS

It was too hard to tell if we were all talking about the same thing; so that is what my post was all about ;~)

There was some interesting info on this thread, Thanks!