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Please do, sounds way cool. Any chance of a picture of a toy surfer in there? :wink:
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I have so got to see that
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Nice! Put a cuttle in there too!
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Sounds neat. I would like to see a diagram and pictures.
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Njord":bdvj48v1 said:
Heh. You want to impress me? Let's see Chris himself surfing in there...
Peace,
Chip
Fatal Morgana":l5fccgui said:
And have a door open at the bottom of the reservoir at the connector to let the water out? No thanks. A lot more expensive, less reliable (mechanical parts underwater) and a smaller, weaker, less believable wave. Plus, I had to use materials on hand.
Three schools of thought on swell generators are the pump and drop, like what I just described in this post, the paddle push, and the pull and drop, like what I built is derived from (most operate functionally identical, but with more expensive parts and mechanisms). The first has been used traditionally in large wavepools. It makes a weak, mushy, crumbling wave. The second is a little better, it makes barely surfable waves like those found at typhoon lagoon. The pull and drop concept is recently becoming more popular, like at places such as Miyazaki's Ocean Dome in Japan, which is the largest wave pool. The pull and drop wavemaker there, coupled with the bottom contours of the wave pool, can make a powerful, perfectly barrelling 8 foot closeout wave.
Pictures from Miyazaki's Ocean Dome (pull and drop swell generator):
galleon":tqnbx4me said:
:?
In your post, if I understand it correctly, you say you use a water pump to recirculate water in the sump. There is a venturi attached to that pump, which suck the air out of the surge tank, and pull up water:
The 3" bulkhead is at the bottome of the surge box, right?
>...No, at the top....
I see now.
Whatever's done is done, but FWIW, I would done this differently with similar material at hand.
1, use a 10X40 plate valve (or a butterfly valve with two 10X20 flaps) over the 8X36 opening.
2, Lifer open the plate/butterfly valve instead of the 3 inch air valve.
3, use the pump to pump water directly instead of water->air via venturi->water via air pressure.
This will enable you to make bigger wave, use less electricity, and faster cycle.
I see now.
Whatever's done is done, but FWIW, I would done this differently with similar material at hand.
1, use a 10X40 plate valve (or a butterfly valve with two 10X20 flaps) over the 8X36 opening.
2, Lifer open the plate/butterfly valve instead of the 3 inch air valve.
3, use the pump to pump water directly instead of water->air via venturi->water via air pressure.
This will enable you to make bigger wave, use less electricity, and faster cycle.
>...And have a door open at the bottom of the reservoir at the connector to let the water out? No thanks. A lot more expensive, less reliable (mechanical parts underwater) and a smaller, weaker, less believable wave. ...
Yes, I read the above, but just need to have someone bet my head a couple of time before anything starts to sink in...
Can you confirm again that with the same water height in the surge box, the air-controll approach give you better wave than the water-controll approach?
I am sure you are going to say affirmative
The only difference here is that air has a much lower viscosity than water, ( the back pressure is the same for both methods) and it is more critical to open up the valve with appropriate speed if you want a nice "punch" to the wave. Depends on the driving mechanism of the lifter, you can get this done either way. But then, as long as it works the way you did it, then I should not expect anyone else to get excite about a different approach.
Yes, I read the above, but just need to have someone bet my head a couple of time before anything starts to sink in...
Can you confirm again that with the same water height in the surge box, the air-controll approach give you better wave than the water-controll approach?
I am sure you are going to say affirmative
The only difference here is that air has a much lower viscosity than water, ( the back pressure is the same for both methods) and it is more critical to open up the valve with appropriate speed if you want a nice "punch" to the wave. Depends on the driving mechanism of the lifter, you can get this done either way. But then, as long as it works the way you did it, then I should not expect anyone else to get excite about a different approach.
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